Handbook for the ML Stokes Trench Mortar Equipments
34
4O/W.OJ~fJ66. Crown Copyr~ghsRe.~erv,d. • HANDBOOK O~ TIlE M.L. ISTOKI3S 3-INCH TRE3NCI-i MORTAR EQUIPMENTS. LAND SERViCE, 1919. L 0 k~’o N PUBLZaUW BY’ HIS MAJESTY’S STATIONEIW OFFIOL To be pnro~ued through any Bookielier or directly from ~M. S1~ATION~RY OFPIOE at the following addreeses: IMVIIUAL. Ilouea, Kn~oswAT, LONDON, W.O. ~, and 28, AIJZNODON STnBaT, LONDON, S.W. 1, 87, Pamu STDEHT, MANCI1EWrBIt 1, ST. AN1)lUcw’i OItEic~NT,OAIIlflU; 23, Foivrn ST1tEaT, EDINIIVNOU; or from B. PONSONIIY, Lrm, 116, ~MAPTONS!llI~T,DLT1~tIN. 1920. Price 1,. 6d. Net.
Transcript
4O/W.OJ~fJ66. Crown Copyr~ghsRe.~erv,d.
• HANDBOOK
O~ TIlE
M.L. ISTOKI3S 3-INCH TRE3NCI-iMORTAR EQUIPMENTS.
LAND SERViCE, 1919.
L 0k~’oNPUBLZaUW BY’ HIS MAJESTY’S STATIONEIW OFFIOL
To bepnro~uedthrough anyBookielierordirectly from~M. S1~ATION~RYOFPIOE at the following addreeses:
(The prices in bracket. arethoseat which the books areobtainable,postfree, by Officers, Non-CommissionedOfficers,and Men, in the mannerprescribedby Appendix XXXIX of the King’s Regulations andOrder.for the Army, 1912. Applications should be made on Army formL. 1872, andaddressedto the Secretary,War Office, S.W. 1.)
Seealso ~ARABIC GRAMMAR. Two parts; 1887. (Bold to Officersonly). lOs. (lOs. iOd.)A.RMOURERS. Instructions for
Care,repair, browning,&c., of Small Arms, MachineGuns, ‘Parapet” Carriages,and for the care of Bicycles. 1912. (Reprinted, with Amendments,1916).2.. 6d. (2.. ld.)
Addendum,Jan. 1918. Care and repairof Rifles, Magazine,P303-inch pattern.1914. (In thepress)
ABMY LIST. The Monthly. Officers on the Active List. (Pub)icafion wassuspendedduring the War)
Jan.1919, andafter. Each,5s. (4.. Li.)Quarterly ~3upplement.Oflicers Retired from the Active List; Victoria Cross;
ARMY LIST. The Quarterly (not issuedin October,1914). Each15.. (10.. lid)ARMY ORDERS. Monthly. Each3d. (3d.)ARMY ORDERS. Coversfor. 9d. (9d.)ARMY REVIEW. Quarterly’. July 1911 to Oct. 1914. (Vol. I., Nos. 1 and 2, out
qfprint), is. (Up to July 1914, is. ; Oct. 1914, lid.)(Sabsequentpublicationsuspended)
ARMY SERVICE CORPS. SeeSanvacs.AIITIPICEES. Military. Handbook. 10th Edition. 1915. 9d. (3d.)ARTILLERY AT TRE PICARDY MANtEUVRES in 1910. Translated
Purdeet,1911. is. (9d.)SalisburyPlain, 1900. 4d. (4d.)
ARTILLERY STORE ACCOUNTS AND THE CARE AND PRESERVA-TION OF EQUIPMENT OF ROYAL ARTILLERY, HORSE, FIELD, ANDHEAVY BATTERIES. Noteson. Sept.1914. 6d. (3d.)
AUSTRIA. CAMPAIGN OF 1868 AGAINST. See GERIUX~Y.BARRACKS. Careof. Instructionin. 1901. 9d. (7d.)BASUPOETH CHRONOGRAPH. Experimentswith, to determinetheresistance
of theair to themotionof projectiles. Reporton. 1870. 1.. (9S)BERMUDA MILITIA ARTILLERY. Regulations,1914. 3d. (7d.)BICYCLES. Military. Handbookon. 1911. (Reprinted,with Amendments,1914).
(R~printed1916). id. (ld.)L BOUNTY TO SOLDIERS. SeeFIELD ALLOWANCE.
BRITISH MINOR EXPEDITIONS, 1746 to 1814. 1884, 2..Sd (1.. lid.)cr CADET LIST. 1
CADET UNITS. j ee EIUiITORIAL ORCE.CAPE OP GOOD ROPE RECONNAISSANCE SURVEY, 1903-1911.
—i Reporton the, is. Gd. (is. ld.)~ CASUALTY LISTS, WEEKLY, WAR OFFICE LED AIR MINISTRY.
No. 1, Aug. 7, 1917, to No. 83. March4, 1919. Each3d (8d.)~ CAVALRY. TechnicalOperations;Cavalry luauArmy; Cavalryin Battle. Trans..~ latedfrom theFrenchof CaptainLoir, XX Army CorpsStan. With a Prefaceby
GeneralLanglols. With Maps. 8,. Sd. (2.. 3d.)• CAVALRY OP THE LINE. PEACE ORGANIZATION OF THE
and Arrangementsfor Mobilization consequenton the establishmentof CavalryDep6ts. (SpecialA.O., July 19, 1909). Id. (id)
to. Part I. For the guidanceof Staff, Regimentaland DepartmentalOfficers atHome. 3d. (3d.)
3(is14184) £2
MILiTARY BOOKS,publishedbyAuthorsty—oontinued.
(A. to prices in bracket., seetop of page2.)
CREWS OF WAR DEPARTMENT VESSELS AND BOATS AT HOME• STATIONS.RegulationsfortheAppointment,Pay,andPromotionof. 1911. 2d. (2d.)CYCLIST TRAINING. 1917. Provisional. 6d. (65): Amendments,Aug. 19i8.
• id. (15)DEMOBILIZATION. ARMY. Regulations
• PartI. With Diagram showing Method of DispersalS and Map of DispersalStationsandAreas in theUnitedKingdom. is. 65 (is. 3d.)
PartII. With Planof Hutment Lines showing suggestedAppropriationof Build-ings for useasa DispersalStation;and Mapof DispersalStationsandAreas in theUnitedKingdom. Gd. (6~L)
PartIII. (In thepress)Do. Chap.XXIV. LabourUnite. 2d, (2d.)Do. Chap.XXV. PartI. Dispersalof Officers of theArmy Chaplain’sDepart-
Nos.8 to 22. Eachid. (15)To PartsI. andII. id. (LI.)
DESPATCHES. SeeWAn or 1914-18.• DISABLED AND DISCHARGED SOLDIERS IN PRANCE. Training
and Treatmentof. Report by Sir Henry Norman,Bart.,M.P., Liaison Officer o?theMinistry of Munitionsto theFrenchMinistry of Inventions. 4d. (4d.)
DISEASES, MEDICAL, IN THE TROPICAL AND SUB-TROPICALWAR AREAS. Memorandaon. 1919. With Plates, Diagrams, Text-figures,andIndex. 2s. Gd. (2s.)
DRAINAGE MANUAL. For the use of Royal EngineerOfficers, and otherpersons,employed•on the Constructionand Maintenanceof Drainage Works inconnectionwith War DepartmentBuildings in the United Kingdom or in similarclimates. RevisedEdition. 1907. (Reprinted1915). Os. (4:. 4d.)
• DRAWING PLATES. Military:—Attack of Dnfor’s Counternilnesor 2nd plate of Mines• Carnot’sFirst System;
Detached Forts; ConcealedDefences,1, 2, 8, 4; PrInting Plate, A, B, 0, &o.~• Detail Plate, No. 1; Do., No. 2; Neighbourhood of Woolwich; Village aml• SurroundingGround. Each2d. (25)
DYNAMICS. Notes on, SeeORDNANCE COLLEGE.EGYPT. BRITISH FORCE IN. StandingOrdersfor the. 1912. 1.. (lOd.)EGYPT. CAMPAIGN OP 1882 IN. Military History. With Caseof Maps.
Battle of Noisseville. GeneralReview of War up to September. 48. Gd.• • • (8,. 45) •
• • 10. Investmentof Paris. Captureof Toul andStrassburg. 6.. (4s. 64.)11. EventsbeforeParis,andatotherpoints of Theatreof War in WesternFrance
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StrassburgandMetzto middle of November. 4s. Gd. (8s. 54.)• 18. Occurrenceson Theatreof War In Central Franceup to Re-occupationof
Orleansby theGermans. 6.. (4.. Gd.)14. Measuresfor Investmentof Parisup to middle of December. 4s. (8..)15. Measuresfor Protecting the Investment of Paris and Occurrencesbefore
S • FrenchCapital to commencementof 1871. 2.. Cd. (is. lid.)16. Proceedingsof SecondArmy from commencementof 1871until theArmistice.
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EventsbeforeParisfromcommencementof1871to theArmistice. 88. (Os.)• • • 19. Occurrenceson South-easternTheatreof War frommiddle of January,1871. —
ProceedingsIn rear of GermanArmy and in COastProvinces,from i~ov.1870 until theArmIstice, 13.. 6d. (9..84.)
20. General Retrospectof War from beginning of Sept. 1870, to Cessationof• Hostilities. ArmisticeandPeacePreliminaries. Ileturn of GermanArmy
and Peaceof Frankiort. The Occupation. The Telegraph,Post,Supply• of Ammunition,Commissariat,Hospital Service,Divine Service,Military
• The Black Watch (Royal High- ThePrinceof Wales’sLeinster Regi-• landers). • mont(RoyalCanadians).
The Cameronlans(ScottishRifles). The Prince of Wales’s Own (WestTheCheshireRegiment. YorkshireRegiment).The Duke of Cornwall’s Light The Prince of Wales’s Volunteers
Infantry. (SouthLancashireRegiment).The Duke of Wellington’s West The Princess Charlotte of Wales’s
Riding Regiment. (The Royal BerkshireRegiment).TheDurhamLight Infantry. The Princess Louise’s Argyll andTheEastLancashireRegiment. SutherlandHighlander..TheEastSurreyRegiment. The Queen’s (Royal West Surrey
• The HampshireRegiment. - Regiment).TheHighlandLight Infantry. TheRoyal Inniskilhing Fusihiers.TheKing’s Own (RoyalLancaster The Royal SussexRegiment.
IT~LIIN CAVALRY TRAINING REGULATIONS. 1911. Training forMarches,Tacticsof Minor Units,and Trainingof Patrols, Translated. 45 (Bed)
ZAMAICA. StandingOrders. 1912. it. (94.)3EESEY. ROYAL MILITIA OF THE ISLAND OP. Regulations. 1914.
With theJerseyMilitia Law, 1905. 1.. 3d. (lied)KING’S REGULATIONS AND 0~DERS FOR THE ARMY. 1912.
(Reprinted, with Amendmentspublished in Army Orders up to Aug~1, 1914).• (Reprinted1918.) 1..65 (is. 24.); Amendmentspublishedin Army Ordersbetween• Sept,1, 1914, and Aug. 1, 1916. 14. (14.); Amendmentspublished in Army
Engineers. Royal—1. Dismounted. Detailof ShelfandBedding,with MarchingOrderreadyto put
on. Detail of ShelfandBedding,with Drill Order readyto put on. 1914.• Id. (led)
2. DIsmounted, Full Kit laidout for Inspectionin BarrackRoom. 1914. id. (14.)4. Mounted N.O.O. or Driver and Field Troop Sapper. Full Kit laid out for
Inspectionin BarrackRoom. 1910. 14. (led)6. Mounted. Detail of ShelfandBedding. 1910. 14. (led)6. Driver, with pair of Horses. Field Kit laid out for Inspection on Parade,
including Article, carriedin Valise on BaggageWagon. 1899. 14. (led)infantry— •
MACHINE GUNS AND SMALL ARMS, ‘808-inch. Nomenclature of Parts.• • Stripping Assembling, Action, Jams, Mlssflres, Failures, and Inspection of.
Revised kdition. 1917. 68. (Gd.)MAGAZINES AND CARE OF WAR MATERIEL. Regulationsfore 1918.
• (Reprinted,with Amendments,publishedin Army Ordersup to March 81, 1917.)is. 65 (1.. 3d.)
MAP READING AND FIELD SKETCHING. Manual. 1912. (Reprinted,with Additions,1914). 1.. (ild.) Seealso PuornA*xrOu.
MEDICAL CORPS. Royal Army. Seealso TEUBITOitLAL FoIoz.• Admissionto. Regulationsfor. Jan,1912. 18. (18.)
Standing Orders, 1914. 1.. (105) •
Training. 1911. 94. (94.) Seealso TimurroitrAa FoRCE.MEDICAL DEPARTMENT, Army. Index to Appendicesof Reportsfrom 18S9
to 1896. 84. (84.)MEDICAL DISEASES in the Tropical and Sub-Tropical War Areas. See
DIsEAsEs.• MEDICAL SERVICE. Army:—• Regulations. 1906. (Reprinted,with Amendmentsup to Sept.80, 1914). 44. (Sd.)
• • Ditto. Amendment,Dec.1916. RevisedAppendixNo. 51. Scaleof Medicaland 8urgical Equipmentfor Units in theField. 14. (Id.)
• MEDICAL SERVICE. Strategicaland Tactical Rmploymentof the,ascarriedoutin an Army Corps; with aseriesof Problems. TranslatedfromtheAustrian. 4.. 6d.(8.. 44.)
MEDICAL SERVICES. Army. AdviSory Boardfor. TheTreatmentof VenerealDiseaseand Scables. First Report. 1904. ii. Gd. (1.. 34.); SecondReport.
• 1905. 2.. (1..64.); ThIrd Report.1905. 1.. • (104.);FInalReport. 1906.• • • (Out of print)MEDICAL SERVICES OF FOREIGN ARMIES. Handbook of.
Part I. PItANCE 64. Set, PartV. ITALY •64. (65)• • Part U. GEIur~NT ,,, 3d. Sd. PartVI. TIs~ • NETIIB1tL.&ND5
Part III. AV5TRL&-HUNGLRT. 64. 3d. ~ND BEhGwI ... Gd. (55)• Part IV. BtysstA GeL 54.MEKOMETER Handbook. 1911. Gd. (64.)MESOPOTAMIA. ReportfortheArmy Councilon. (With Map.) 1919. 1.. 64. (ls.84.)MILITARY AND OTHER TERMS. SeeSwooLs.MILITARY LANDS ACTS, 1892 to 1903. Byelaws. See ARTILLSRT A1~D
• NUMBER OP TROOPS TO THE YARD in the Principal Battles since 1860.Memo. on. With opinions of Modern Authorities on limits of extensionat thspresentday. 1884. 94. (74.) •
23, Foitra STREET, EneNcamun’or from B. PONSONBY, Lrn., 116, I~RAFTON~TRUT,DUELIN.
1920.
• Price is. 6d. Net.
CONTENTS.
Particulars ... ...
Description ... ...
BasePlates,Marks II andUI ...
Stand,MarkII ... ...
Shield ... ... ...
Mounting,A.A. ... ..,
Baseplate,A.A. Equipment
Strap,transporting ...
Sights,mirror ... ...
,, open ... ...
Nomenclatureof EquipmentCareandPreservation ,..
DimensionsandWeightsMiscellaneousStores ,..
Ammunition—13
1414
14
15
N0TE.—This book is corrected up to December, 1919. Any alterationswhich may be suggestedshould be forwardeddirectto the Chief InspectorofArmaments,InspectionDepartin,),RoyalArsenal,Woolwioh.
r length (from muzzle to front endof striker stud) 45-inches,Bore (approximate).
I. diameter ... - -- .. .,. ... . -- 3-inches.
Firing ... . - - ... ... ... .. ... Percussion.
• MORTAR.(Plates VII to X.)
The mortarconsistsprincipallyof a steel barrel,breechpiecewithwasher and striker stud, stop bolt, elevatingband with securingbandandstop collar.
• The barrel is of steel tube slightly reducedin section from thebreech towardsthe muzzle and reducedin diameterat the breechendfor thereceptionof thebreechpiece.• The breechpiece is screwedover the rear end of the barrel and
o is furnishedwith a striker stud screwedinto the breech piece andprojectingaxially into the bore. The outer endof the breechpieceis formed semi-sphericalto suit the socket of the baseplateandisprovided with ahole in the lower end for usewith a tommy whenassemblinganddismantling.
A bomb stop is provided on the left side of the barrel near themuzzle,andconsistsof astopbolt, the innerend of thebolt projecting
• through the barrelinto the bore whenin the loading position. Thebolt is held in a socketwhich is screwedinto the barrel andsecuredby a lock-nut. A loop for lanyard is hingedat the outer endof thebolt. • • • • • • •
The elevating band is clampedroundthe barrelnearthe muzzleby means of a securingband with two nuts. The bandsare pre-ventedfrom moving by stopscrews. The undersideof the elevatingband fórinà a nut for the traversingscrew in the crossheadof thestand.
Thestopcollar is of steeland~is intendedto beclampedroundthebarrel in front of the elevating band,so as to preventlongitudinalmovementof the latter beforefiring.
It consistsof a split steel ring and clampingcollar, the formerhavingserrationspreparedon the exteriorsurfaceandthe latterbeingslightly taperedwith screwthread for screwingover the split ring.A hole is provided in the exterior of the clamping collar br thereceptionof the studon the stopcollar wrench“A.” The split ringbeingheldby awrench“B “while the collar is rotatedin assembling.
(n 14184) Wt. 49813—PP2072/98SM 2/20 B & S 01184 • A 2
4
• BASB PLATBS.
TheMark II baseplate (Plate IV) consistsof an octagonalsteelplate having a flangedsocketfor the receptionof the roundedendof the breech piece riveted to the upper side. Two ropehandlesfor transportingpurposes areattachedby steel loopsto the upperside of the plate. Holes to admit of the use of spikesfor securing‘the baseplate in positionareprovidedat the corners.
TheMark III baseplate (Plate V) consistsof a steel stampingin the form of a shallow rectangulartray, 20-inches long by 13-incheswide, the centreof which is reinforcedby a stiflening plate.Threecupped recessesare formed on its longitudinal axis for thereceptionof therounded end of the breechpiece of the mortar,thelatter being preventedfrom rearward movementby an angle steelstop. The baseplate is provided with a rope handle for liftingpurposes.
STANDS.
(Plates II and III.)The Mark II standconsists principally of deflection, elevating
andtraversinggears,supportedon a tubular‘bipod standwith crossstay.• The legs of the standare left and right and are madeof steeltube, each with spikedfoot, crossstay lug and fork end brazed‘on.Thelegsareconnectednearthecentreby meansof ahingedcrossstayand at the upperendsby ‘two trunnionstudsto atrunnionstandardwhich carries the elevatingwheel and pinion, elevating handle andgear box. The elevating screw passesthrough the centreof theelevatingwheel, whichforms anut for the screw,andis preparedattheupperendwith aconedportion,with nutandwasher,forconnectingto the traversingorosshead.
The traversingcrossheadis attachedto the upper end of theelevating screw and carries‘the traversinghandle and traversingscrew,which latter works in a ~iutformedin the undersideof theelevatingbandon the barrel.
The deflectiongearconsists principally of a supportingbracket,spindleandpointer.
The supportingbracketis securedin a horizontalpositionin frontof the traversing crossheadby meansof the nut on top of theelevatingscrewandcarriesabrasstubularspindle.
The spindle has,inscribed longitudinallyround its surface,eightdeflection scaleswhich are graduatedto suit anglesof elevation(at5°interval)between45°and80°,and are arrangedto read“right”and “left” from zero, the right graduationsbeing in red and theleft in black. It is rotatedby meansof a knurled headuntil therequiredscaleis exposedto view through an openingformed in thesupportingbracket. •
• Thepointer,by meansof which the scalesare read,is attachedto the baseportionof thetraversingbandby a springclip. •
5’
The deflection,elevating and traversinggears are worked fromthe left sideof themortar.
A bronzering engraved‘with the natureandmark‘of the stand isattachedroundone of thelegs. ‘
The Mark I standdiffers from the Mark II tubular standin beingmadeof lighter tubing and in having no bronzemarkingring roundoneof th~legs. ‘ ‘‘ ‘‘ ‘
Thesestandswill be consideredobsoleteas they are replacedbythe Mark II tubularstands.
The shield is madeof steel plate,No. 5. S.W.G.(‘212-inch) thick,and consistsprincipally of onecentre,one movable and threewingportions,the third wing portion being used to extendthe shield tothe left in order the better to protect the number operating theelevating,traversinganddeflectiongears.
The centre portion is rectangularin shapeand is providedwithtwo hingebolt andcatchplatesfor theattachmentof thewingportions
Thewing portions,which are in all respectssimilar, arerectangularin shapeandhavetheir upperedgesscallopedfor usein adjustingtheheight of the movableportion to suitthe angleof elevationof themortar. Eachwing portion is providedwith threehinge bolt andcatch plates, an eye supportingstay and stay for supportingtheshieldwhen in use. The stayhas, pivoted nearits foot, a stop topreventunduesinking in the ground andis hingedabout its centreto facilitate transport, a steel loopbeing providedfor locking the twoportions togetherwhen in use. When not in usethe stayis foldedup andhousedby asteelspringclip.
The movableportion is cut awayon its upperedgein orderto clearthemortarandis hung in front of theshield over thecentreportionby meansof two supportinghookswhich engagethe scallopsin theupperedgesof the wing portions.
MOUNTING, ANTI-AIRCRAFT, M.L. STOKES 3-INCH
TRENCH MORTAR.
(Plate8 VII to X.) •
‘The anti-aircraft mounting consistsprincipally of a frame con-structedof 1-inchby 1-inchflat steelbar provided at the topwith apair of hardwoodhandl~s,mounted on a pair of legs which beingconnectednear the bottom by a curved cross stay, forms a bipodstand.
The centralportionof the mountingis formedfor the receptionofthe barrel; the latteris heldin position by a clampingbandwith twoclampingscrewseachof which is providedwith a smallsecuringchainattachedto an eyerivetedin the side of the frame.
Thestandis hingedto the frameportionto whichit is held rigid~when in use,by a locking pin with securing chain,when not in usethe standis foldedbackagainstthe barrel and securedby a leather
6
strap. A steelpillar for thereceptionof the mirror sight is provided,centrallyatthe top of themounting.
(Plates VII to lx.)The baseplatefor usewith the Anti-Aircraft Mounting is of steel,
rectangularon plan; it is provided centrally on its upper surfacewith a raisedcupfor the receptionof the breechend of the barrel,re-inforoedon its undersideby steelangles,andfurnishedwith a‘ropehandlefor transportingpurposes.
(Plate I)Thetransportingstrap is madeof 2-inch canvaswebbing,in two
parts,connectedaboutthe centreby a bucklewith two runningioopsof leather. The muzzleendportion of the strap is furnishedwith a’leathercrossstrapfor attachmentround the muzzle,the breechendbeingprovidedwith a steelspringloop, fitted with a clampingscrewwith keepring, for attachmentto the breechendof thebarrel.
SIGHTING.(Plate XI.)
SIGHT, OPEN, M.L. STOKES 3-INCH TRENCH MORTAR, MARK I.The sight is so designed,that it canberestedon the muzzleof the
mortarduringthe operationof laying, and the line of fire picked upby the layer, by fixing the bar sight by handin any position in thevertical plane, so as to enablehim to align the sightson any objector auxiliary mark.
The body of thesight is shapedto reston themuzzleof the mortarand’ is providedwith a fork to carry the bar sight. The bar sight isprovidedwith afore andhindsightandisheldin theforkbyaclampingbolt and nut, sufficiently tight to permit of the bar being movedupor downby hand. Thebar can be clampedin any position by meansof a milled head.
An adjustablespirit level, on the top side~of thebody, enablesthelayerto cross-levelthe sight as required.
SIGHT, MIRROR, A.A., M.L. STOKES 3-INCH TRENCHMORTAR, MARK. I.
The mirror sight which is for use againstaircraft consistsof afive-sidedbaseblock of hard wood, the undersideof which is boredandprovided with a gun metalsocketfor the receptionof the sightsupportingpillar on the clampingframe. A featherway is formedin the socket for a featheron the supportingpillar, which prevents
7
Shield,M.L. 3-inchStokesTrenchMortars
thesight from turning, andthe sight is locked by meansof a lockingpiecesecuredto thesocket.
The upperandlower forward facesof the baseareprovided withmirrors, the latterarebeddedin the baseandsecuredby aframeandwood screws. A clock dial is engravedon the mirrors, with theXIIpoint to thefront andoverthe axis of the mortar. The figureson thedial are engraved in the opposite direction to the ordinary clock,i.e., thefigure I is on the left of XII.
A sight bar, attachedto the baseis shapedto allow the layer tolook down into the mirrors. The bar is provided with two sightingholes, one for use when engagingapproachingmachines, the otherfor machinesmoving away.
NOMENCLATURE OF EQUIPMENT.The nomenclatureof the mortar, base plates,‘ stand, shield,
mounting,A.A., andseparatedemandablestoresis as followsOrdnance,’ M.L. ‘ No.
Stand,Mark II Steel,tubular; consistingof left andright legs,
eachwith spikedfoot, crossstaylug, crossstaybolt with nut, and fork end; crossstay in 2
• parts (I) and’ (II with connection),and hingebolt with nut; trunnion standard withelevatingpinion stud with keeppin and nutand keep pin; 2 trujuiion studs each withkeep pin, and gear cover with 3 securingscrews; elevatingwheel; elevating pinion;elevating handle; elevating screw with nutand washer; traversingcrosshead;travers-ing screw; traversingscrewshaftwith couplingsecuringwire andtraversinghandlewith pin;and locking pin for traversing screw shaftwith S-hookandspring;pointer;bracketwithdeflection tube,with knurled head with splitkeeppin andspringwasher .. -. .. 1
Steel; in five parts ..1
“8
• Mounting, anti-• aircraft M.L.
,Stokes3-inchTrench Mor-tar, Mark II Consistingof standand
CARE AND PRESERVATION.(These instructions‘appi!, also to the A.A. Equipmentexceptwhere
referenceis madeto theelevatsngandtraversinggearsand8hield.)The mortar should be kept clean and free from rust and d~bris,
the bore slightly greasedandthe stopbolt and releasingtrigger welllubricated.
If the mortar is not to be usedfor some time, the boreshouldbecleanedand oiled with paraffin or mineral oil. Thick lubricating oilshould not be usedfor thispurposeas it charsandtendsto clog thebore. Should the bore become “sticky” the surface should becleanedwith paraffin or petrol.
Thestriker studshouldbeexaminedfrom timeto time, thebreechpiecebeingremovedfrom thebarrelfor this purposeby meansof thetommyprovided. If found to be worn so as to be’ likely to cause
miss-firesit shouldbe replacedbya new striker stud,carebeingtakenthat the striker ~tud and the breechpiece are tightly screwedhomeon replacement.
Themuzzlecovershould bekept in position on the muzzlewhenthemortaris not being used. In wetweatherthis is of specialimport-ance,aswaterin theboreseriouslyaffectstherange.
The recessfor rear end of breech piecein the baseplate shouldbe keptfreefrom earth.
The stand should be kept clean and all working parts, e.g., theelevatingandtraversinggears,well lubricated. It is importantthatthenutsonthesecuringbandof theelevatingbandshouldbetightenedup from time to time, as they tend to work loose after continuousfiring.
Beforefiring, care should betakento see that all oil is removedfrom thebore. If theboreis oily, smokewill be given off anddisclosethe position.
Under no circumstancesshould anyonebe permittedto passinfront of, or nearto themuzzle, whilst firing is in progress.
All working partsshould be cleanedand oiled, the striker studexaminedand, if necessary,tightenedup. The mortar should be
9 • cleaned,all residueremovedfrom the chañTherand the boreslightlyoiled.
Alter’ firing, thevariousnuts and screwson the mortar andstandshould be examinedto see that they havenot shakenloose by thevibrationdueto firing.
Careshouldbe takenthat thehingebolts and catch platesof theshield arekeptfree from dirt andrust.
DIMENSIONS AND WEIGHTS.
Description.Dimensions
(Approximate.)Weight•.
(Approximate).
Mortar (with traversingband)...Stand(tubular) Mark II ..
Baseplate (MarkII) ... ...
(Mark III) .. ...
48-ins. x 3~.ins. ... ...
34-ins. x 8~.in.x 4k-in. ...
15-ins. x 15-ins. ... ..
20-ins. x 13-ins. .. ...
48-lbs.34-lbs.60-lbs.40-lbs.
Shield, assembled ...“ ... 48-ins. x 72-ins. .. ... 270-lbs.Box, Storo, ifilod ... . . - 57-ins. x 16k-ins. x 11k-ins. 196-lbs.
A nti-Aircraft Equipment.Mortar .. ... ... ... 48-ins. x 3~-ins. ... .
Mounting,Mark II ... ... 41-ins. x 21-ins. ... ..
Baseplate, Mark I ... ... 20-ins. x 13~.ins.x 4-ins. ...
Straps,transporting ... ... —
Box, ammunition,B. 131 ..~ 21-ins x 12-ins. x 4-ins. ...
sistsprincipally of a squaresteelspindlewith cast iron front and rearflanges,a tubular rod with handle,and four wire-coveredhard woodsegments,which arecurved at the front end to suit the interior of
(14134) , A3
• 10
the breechandareprovided on their undersidewith retainingplatesand fiat steel springs. The free ends of the springs, operatingonthe spindle,permit of the contractionand expansionof the brushwhenin use.
The flangesare provided with perforationsto receivethe ends ofthe retaining plates and with sockets which engage shouldersonthe ends of the spindle. The front and rear flangesare securedonthe spindlebya locking screw anda hexagonnut with springwasher,respectively.
The rod is of tubular steel with a T-hanclle at one end and isattachedto the spindleby a screwedsocketwith keeppin.
Box, AMMUNITION, M.L. 3-INCH STOKES TRENCH. MORTAR, B. 131.The box is made of wood and is fitted internally with a wood
partition which is recessed~o take the spigotsof three bombs,andforms a incessfor an inner box in which is carriedthe necessaryfuzes,cartridges,&c., packed in tin boxes. The approximatedimensionsof theinnerboxare10-inchesby 3-inchesby 3k-inches. Foursplayedpiecesare attachedto the bottoni of the box to steadythe bombsduring transit.
A certainnumberof boxesmaybe met with which differ from theabovein havingtwo crosspieces,shapedto takethebombs,insteadofthe woodpartition.
Box, AMMUNITION, M.L. 3-INCH STOKESTRENCH MORTAR, B. 153.• The box, which is madeof wood, is furnishedwith rope handlesandis divided into two compartments,oneto receive the bombsandthe otherthe carbridges,explodersandfuzes. The bombsare heldinpositionin the bottomof the box bymeansof wood guidesanda rackandare securedby meansof a wood packingpiece nailed to theundersideof the lid.
The approximateweightof the box, filled, is 31j-lbs.
Box,Store,ML. 3-inchStokesTrenchMortars.—TbeMark I box ismade of wood and. is providedwith rope handlessecuredby wood-cleats. It is -provided internally with wood fittings anda leatherstrap to carry the equipment (except shield) and various stores,also a small “Box, spare springs,” as shown in Appendix I to.A.F. G. 1098—243.
The lid is securedto the bodyby four screweddowelswhich pass‘throughholesin thelid andarethennuttedup by hexagonnuts.
TheMar/c II differs from the Mark I in being fitted with wingnuts for securingthelid.
Box,tool, M.L. 3-inchStokesTrenchMortar.—This is of wood andis fitted with a hinged lid provided with a haspfastening. It is.carried in the Box, Store,and is designedto hold thevarious tools‘for use with the equipment. Forcontentsof this box seeAppendixIto A.F. U. 1098—243.
Carrier, bomb, ML. 3-inch StokesTrench Mo,-tar.-—Thecarrier is-of khaki canvasand is made up in the form of a sleevelessjacketwith open sides and a circular hole in the centre through which-the headof the ammunitionnumberis passed. The back andfrontaresewndown the centreto form pocketsto carry four bombs(onein each pocket) and four small pocketsare provided at the bottom-of the carrier to hold the cartridges.
Clinometer, M.L. 3~7inchand 4-inch and Stokes3-inch TrenchMortars.—Theclinometerconsistsof a cast-ironbody havinga longflat bearingsurfaceandarevolving circular disc, to whichis attached.8 spirit bubble,which is sensitiveto about2-minutes.
Thedisc is graduatedin single degreesandcanbe clampedto thebodyat anyrequiredreading.
In future, bubbleswill bepainted,on the uppersurfacewithblackstreaksoutsidethe ordinarygraduationsandwith radiumcompound-on the undersideto makethemself-luminousfor useatnight. Instru-ments fitted with radium-paintedbubbles will be markedwith a
• red “R” for purposesof identifioati~n.Clinometer,A.A.M.L. Stokes3-inch T.M. Mark I ‘(Plate XI).—
The clinometer is of the pendulumtype. The body is formed in a‘four-sided skeleton plate, which is practically square. A slide is~securedto the undersideof the body plate, which fits in a grooveformedin a supportingband. A stop at the front end of the slide~preventsthedinometerfrom slipping out of the groove when in use-and a clamping screw on the supportingband is also provided forsecuringthe clinometer. The supportingband which is shapedtofit over the barrel is securedto the elevatingbandof the mortarbytWO nuts. ‘
12
- An index plate and scaleplateareattachedto the bodyplateby-securingscrews. Four-yardscalesare graduatedon the scaleplate-to suit the various chargesused with the mortar and the natureofchargeto beusedwith eachscaleis markedagainstit.
A pendulum readerand pendulum stop with a stop stud and~milled nut arehingedto the upper cornerof the body plateand anindexpointer,witharadiusline throughoutits length,worksin agroove-cut in the index plate, a guidescrewwith milled nut is provided forclampingtheindex pointeras required. -
Cover, Muzzle, M.L. 3-inch StokesTrench Mortar.—TheMark IImuzzlecover is of leather,shapedto fit over the muzzleand is pro-vided with a securingcord.
The Mark I muzzlecovers are similar to the Mark II, but are-madeof canvaswith wire ring andsecuringcord. No more Mark Icoverswill, however,be madeand existing coverswill be consideredobsoleteasthey becomeunserviceable.
Implements,Ammunition—Extractor,Cartridge, M.L, 3-inch Stokes’Trench Mortar.—The. Mark I extractor consists of a steel rod,.blackenedin oil, 4~52-incheslong and 1~22-inchesin diameter; a.-semicircular holewith bevellededges is provided at one end- and a~morticed slotat theother for removingcartridgesfrom the container.~A holeis drilled in the centreto receivealanyard.
The Mark Ii differs from the Mark I in the semi-circularhole-beingpreparedfor usewith cartridgesfitted with a guard.
ImplementsAmmunition—KeyNo. 74,Mark 1.—Thekey consists-of afiat barof steel,6-incheslong,with a semi-circularjaw at oneendwith two studsat right anglesto the jaw to engagein the slots inthe No. 136 fuze for fixing purposes. The handle is fitted with a-lanyard.
Rod, cleaning, M.L. 3-inch StokesTrench Mortars.—The rod is~madeof tubular steel,49-incheslong andabout finch in diameter..It is cut longitudinally at one end for about 6-inchesto form fourportions,which aresplayedout and havetheir ends turnedin so asto retain thecottonwasteor rag whenusedfor cleaningthe mortar.
Spanner,combination,M.L. 3-inchStokesTrenchMortar Equipment..—The spanneris of steel. It is providedwith two pairs of.jaws at;oneend,the otherendbeingturnedup to form a screwdriver; it has-four hexagonalholesof varioussizesformedin thebody. -
The spannerfits all the nuts andbolts of the standand also fits~the striker stud. The screwdriver’end is for use wLth the trunthor~studs.
Tommy, M.L. 3-inch StokesTrench Mortar.—The tommy is ofbar steel andis reducedat oneendto suit the holein existingbreechpieces, the other end being arrangedto suit the larger hole in th~strengthenedbreechpieceof future manufacture.-
Wrenches,StopCollar, M.L. 3-inch Stokes Trench Mortar “Aand “B”—The wrenchesare of flat bar steel,one end being semi—circular in shape and fitted with a stud to engagea hole providedin the clampingcollar of the stopcollar andthe openingof the splitring respectively. Thewrenchesdiffer fromeachotherin thediameterof the clutch portion.
• ‘ ‘ Typical.Thebomb consistsof a steelor iron cylinderscrewedatboth ends,
one end- to receive a head formed with aprojectingspigotin thecentre, which is screwedto receivethe fuze and the other endtoreceivea base-fittedwith a “Container, tubular, propelling charge.”The containerconsistsof asteeltubeperforatedwith 16 holes.
BOMB, M.L., H.E., WITH VANES, 3-INCH STOKES TRENCH MORTAR,- LIGHT, MARK II.
(Plate XIII.)The Mark II bomb consistsof a cast iron body, stream line
in shape,which is threadedat the headto receivethe “Plug, FuzeHole,1~375-inch“ or a “ Container,Exploder,”No.4,andatthebasetoreceivethe “Container,Propellingcharge.” The exterior of thebodyis formedwithaguideringattheshoulderandthe interior is corrugatedand varnished. The container,propelling chargeis of tubular steelperforatedwith 16 holesto distributethegasfrom thecharge’equallyaround the bomb; it is threaded at the front end to screwinto the baseof the body againstacopperwasher. The spacewithin-the containernot occupiedby the cartridgeis filled by a wood plugdriven in andthe exterior is fitted with twb piecesof sheetsteelbentat rightanglesto form four vanesandbrazedon to the rearendof-the container.
The bombs are issued- fitted with a “Plug, faze hole, ~904-inch”andwhenrequiredfor use the plugis removed,an exploderinsertedinto the explodercontaineranda No. 136 ftize screwedinto thehead.
CARTRIDGE, M.L., 3-INCH STOKES TRENCH MoRTAR;
95 Gi~An~sBALLISTITE (~).- (Plate XIV.)
Typical.The cartridgeconsistsof a cylindrical papercasewith a brassbase
fitted with a brasscap chamberandfilled with a chargeof baffistite.Thetop of thecaseis closedby two cardboarddiscsandtwofelt wads.The baseis fitted with a striking arrangementoutsidethe cap whichconsistsof a steel guard, striker disc and a steel striker. The steelguard is cup-shapedand is sprungon to the edgeof the base. Thestriker disc is securedto the guardby four nicks and hasrivetedtoit the steelstriker,which it holdsin positionbelow thecap.-
~JARTRIDGE, M.L., 3-INCH STOKES TRENCH MORTAR, AUGMENTING,110 GRAINS CORDITE ~3MM. FLAKE, MARK I (s).
(Plate XV.)Augmentingcharges,eachconsistingof 110grains of corditeflake
containedin abluecambricbag,arealsoissued,thefull chargefor themortar consisting of the cartridge and four of theseaugmentingcharges. In orderto fit the chargeson to the containeratthebase-of thebomb,eachchargeis bentroundin theform of a ring, theends-
beingsecu-redby elastic.(0 For methodof packing,.eedescriptionof “Box, ammunition,” on page 10.
15
CARTRIDGE, ML., 3-INCH STOKES TRENCH MORTAR, AUGMENTING,125 GRAINS, E.C. 3 POWDER, MARK I (s).
(Plate XVI.)This augmentingcharge,which is alternativeto that described on
page14,consistsof 125grainsof E.C.3 powderenclosedinaring-shapedcover of celluloid reinforced with book muslin; to enable thering to-grip the container,the endsof the coverareconnectedby an elasticbandsecuredwith thread.
FUZE, PERCUSSION, No. 136, MARK I.- (Plate XVII.)
The fuze consistsof thefollowing parts~—Body,detonatorholder-,detentandlooking collars, needle,striker spring, impact cap, closingplug, bush,detentspring,armingspring,needleholder anddetonator..All partsare of brassexceptthe detentspring, arming spring andneedlewhich areof phosphorbronze,and the striker springwhich is.of steel. - -, ‘ - -
The bodyis screw threadedat its lower end to the •9~-inchgauge-belowwhichit is reducedin diameterandturnedplain; its upperendis formedwith aconicalflangeterminatinga cylindrical stem. Slots-arecut in theflangeto taketheKey No. 74 for fixing purposes. Inter-nally thebody is boredout in two differentdiametersto takethe per-.cussionarrangements;adiaphragmis formednearthe centrewhich.servesas abearingfor the striker spring andthe top of the detentcollar; a-smallholeboredthroughthecentreof thediaphragmserves-as a guidefor theneedle. The body is threadedinternally at the top-to takethebushand at the bottomfor the closingplug.
The detonatorholder consistsof abrasstubeformedwith aflange-nearthe centrewhicl~iactsas aseatingfor the detentspringandtbe~arming spring, Two grooves are turned around the upper portionof the holder to receive the projectionsof the detentcollar in the-normal or armedpositionrespectively,anda recessis formed at the-bottomto takea17 graindetonator~spunin.
The detentcollar is flangedat thetop to form abearingfor thetop-of the looking collar; the lower portionhassix projections whichgrip in theuppergroovesof the detonatorholderwhenin the normalposition. - -
The lockingcollar, which fits aroundthedetonatorholder,is formedinternallywith a shoulderwhichactsas abearingfor thedetentspring:andlooks the projectionson the detentbollar in the upper or lower-groovesof thedetonatorholder. ‘ -
The bottom of the fuzeis closed by the closingplug; theplugformsa seatingfor the armingspring which is fully compresseduntil.after firing.
• The needleholder is insertedin thô top of the fuzeandsecuredby-meansof thebush;it is supportedby the striker springandrecessedthroughthe centreto take the needlewhich is rivetedin,
The impactcapis sprunginto the needleholder.Thefaze requiresno ‘preparationbeforeloading. • “ ‘ -
(~)For method of packing, 8eedescription of “Box, ammunition,”- on page 10k-
16
Action.—Onthe shock of dischargethe detentcollar and lockingcollar set back, compressingthe detent spring; the projectionson the former ride over the shoulderbetweenthe grooveson thedetonatorholder andgrip into the bottomgroove; the detentspringthenreassertsitself,andforcesthelocking collar upwards,thusholdingtheprojectionsin thebottomgrooveandlocking togetherthedetonatorholder,detentcollar andlocking collar. Owing to the changein posi-tion of thedetentcollar, the detonatorholder is now free to beliftedby the arming springuntil it fouls the diaphragmin the body, thusbringing thedetonatornearerto the needle;the faze is thenarmed.On impact,theneedleholderis drivenin, carryingtheneedleon to thedetonator,theflashfrom whichdetonatestheexploderandtheburstingchargeof thebomb.
FUZE, PERCUSSION, SPIGoT, No. 146, MARK V (s).- (Plate XVIII.)
• The fuze consistsof the following principal parts:—Body of castiron or mild steel, brassdetonatorholder with steel creep springs,aluminium needleholder, steel or lead and antimonyball, steel orzinc alloy cap, steel bracket,brassmud shutter,releasingtape andretainingpin, steelejectorspringandsafetybar.
The body is bored out internally and screwedat the bottom tosuit the spigotof the bomb, thetop portionof the cavitycontainingthe detonatorand needleholdersand the steelor’ alloy ball, the fuzebeingclosedwith the cap.
The top of the detonatorholder is recessedto receivea 1~7graindetonator,the bottomto form a magazinecontainingabout 5 grainsof F.G. powder.
Thedetonatorandneedleholdersare keptapartby two creepspringsfixed to thedetonatorholder so thatthe upperendof the detonatorholder,whichhasa conedrecossformed in thetop, engageswith thesteel ball which in turn engagesin aconedrecessin theundersurfaceof the cap.• A cylindrical metalmud shutter and a bracketwith catch hooksare securedto theexterior of the fazeby thesafety barwhich passesthroughholes in the bracket,shutterandbody of the faze, the barthus servesto keepthe holders.apartduring transportand shock ofdischarge. - -
An ejector spring is placed betweenthe bracketsand the mudshutter. ‘ - ‘ ‘
A doubletwill cloth tapeis attachedto thesafetybar; its freeendis fitted with atapespringandaretainingpin which engagesin aholeandcatchhooksin thebracket.
A safetypin passesthroughthe retainingpin andpreventsit frombeingjarredout of thecatchhooksduringtransport.
The safetypin is removedjustprior to loading.Action.—Onthe shock of dischargethe retaining pin sets back
out of the catchhooks,thusreleasingthe tape. As the bomb travels(~)Formethod of packing,seedescriptionof “ Box ammunition”on page10.
Issuedwith Arnz~~0,-ders, March, 1921.
40w.O.794~ -
- Addendum (No. 1) to the Handbook -
OFTRE -
M.L. Stokes 3-inch Trench Mortar Equipments.
LAND SERVICE, 1919.
Page16:— - . -
Descriptionof” Puze,percussion,Spigot, No. 146, Mark V”—For 3rd line of text from bottom qf page:Read“ Thesafety pin is removedjust prior to loading, care being
takenthat the direction of the pull is at right anglesto theaxis of the bombandneverin a downwarddirection.”
(B 15359z) Wt. 34274—4849 55 3/21 & Ltd. -11.67
- 17
-throughthe air the tapeis pulled off by air pressureandthe pull ofits spring,andassistedby theejettorspring,carriesthesafetybar withit, the bracket,which is thenreleased,falling away.
The detonatorandneedleholdersarenow only heldapartby the - -
-creepsprings,so thatif thefuzestrikesthe groundin averticalposi-tion, the pellet which happensto be uppermostmovesdown, over--comingthe creepsprings,andthe detonatoris piercedby the needle.If thefuzefalls on its side the steel ball rideson the conedsurfacesin thecap andnee~1leholderandforcestheneedleon. to thedetonator.The powderin the bottom recessof the detonatorholder transmits-the flash to the burstingchargeof thebomb.
FUZE, PERcussioN,SPIGOT, No. 147, MARK I (s).(Plate XIX.)
The faze consistsof a tinned castiron body, cap, needleholder,-detonatorholder,magazine,setbacksleeve,mud shutter,creepspring,Lafetypin andspringclip andsafetyspring.• The body is bored out from the top to receive the magazineand percussionarrangementsand screwed at the top to receivethe cap. It is screwed ~.t the base to fit a spigot or adapter.In the caseof No. 146 faze bodiesbeing utilized for this fuze the-safety bar hole is tapped and plugged with a ~crewplug, themarkings on the cap are obliterated and the cap paintedyellow-andre-markedwith the 147fuzeparticulars.
Theneedleholderistaperedoff atthetop to engagein aconeshaped‘recessformedin theundersideof the cap andis turnedbelowaflange~tofit into a deepannularrecessin the top of the detonatorholder.Theneedleisscrewedin fromtheundersideandprojectsbelowthebase-andinto aholebored‘throughthe centreof the detonatorholder; a-creepspring in the annularrecessof the latter preventsthe needlepelletfrom movingon to thedetonatorduringflight.
The bottomof, the detonatorholder containsa 1’7 grain detonator-andis roundedto engagein a correspondingrecessin thetop face of;the magazine; two vent holesare boredthroughthe side andintothe centralholeandannularrecessto preventair cushioning.
The magazinewhich is hollowed out on the undersideto contain-about 5 grainsof F.G. powder,hassevenflash holes boredtbro’ughit to conveytheflashfrom the detonator.
The safetyarrangementconsistsof the following :—A steel band~safetyspring, corrugatedat one end,is wound (commencingwith the-corrugatedend) round the side of the needleholder and retainedinpositionbetweenthe top face of the detonatorholder and theflange-of the needle‘holder, by abrassset backsleeve; the sleeveis heldin positionby two tongueswhich fit on top of the safetyspring.
A safetypin,carrying a horseshoeshapedsteelbandspringwhichgrips aroundtheexteriorof the fazebody,is passedthroughlhe side-of thefuzeunderthelower edgeof themudshutterandsetbacksleeve~ndthro~ighthesideof thedetonatorpellet.
Thesafetypin is removedatthe momentof loading. -
(~)Formethodof packing,seedescription of” Box ammunition” on page 10.
18
Action.—Theshockof dischargecausesthe mud shutterto movesbackwardsandcoverthesafetypin hole in thefuze body to prevent;the ingressof mud. The setback sleevealso movesbackwardsandreleasesthe safety spring, the latter, however, is preventedfromopeningout whilst the bomb is under accelerationin the bore‘due~to thegrip of theneedleholderwhichsetsbackslightly. On accelera—tion decreasingafter the bomb has left the bore, the creep spring:.re-assertsitself and lifts theneedleholder,thus releasingthe safetyspringwhichopensout,leavingthedetonatorandneedleholdersheldapartonly by the creepspring. On impact,the detonatorholder or-needleholder,accordingto whetherthe bombfalls on theheador the’base,movesforward and fires the detonator. If the bomb falls on.its side the needleholder rideson the conedsurfacein the cap andforcesthe needleon to the detonator,the flash of whichignites the’powderin the magazine. ‘ - - -
•FUZE, PERCUSSION, Spiaor, No. 148, MARK I (s).(Plate’ -XX.)
This fuze is generallysimilar to the fuzc, percussion,No. 146,,differing only in havinga shutterarrangementfor releasingthe safetybar in flight in placeof a tape andspring.
Theshutterarrangementconsistsof a brassshutterframe,shutter~andshuttercover. The shutterframe, which contains the‘shutter~is riveted to the mud shutter; two holes areboredin theframe,the-oneatthe top to takea hingepin for the shutterand shutter coverandoneatthebottomto takea safetypin.
The shutter is a flat strip of brassformed at its upperend withtwo elongatedprojections; slots are formed in the projections to-takethehingepin andto allow theshutteraslight verticalmovement;in the frame; two arms, formed at the bottom of the shutter, fitinto recessesin the frameandcover.
The safetypin is removedat themomentof loading.Action of ,Shutter.—Inthe normal position, the ejectorspring is
heldfully compressedbetweentheouterendof thesafetybar,to whichit is fixed andthe mud shutter. The safety bar is kept in positionby the shutter,which in turn is held -by the arms fitting in therecessesin the frame and cover andis securedby the safety pin.Onremovingthesafetypin, theshutteris keptup only by the friction.causedthroughthe pressureof the safetybar. On theshock of dis-chargeit setsbackandis releasedthroughthearmsbeingwithdrawn’from their recesses; thepressureof the ejectorspring,actingthroughthe safetybar, causestheshutterandcover to revolve upwardsandthe safety bar to be.withdrawn from the body.- The fuze is thenarmedandon impact,the actionis the sameas thatdescribedfor theNo.-146 fuze on page16. - -
(~)For methodof packing,seedescription of “Box ammunition” on page 10
MIL!~’A If 1’ 1300X8,p Aed~yAuthoelt~,—ccntinued
(Aa to prices In braoket., esetop of page2.)
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WAR GRAVES COMMISSION. IMPERIAL:—TheGravesof the Fallen. DescriptiveAccount,by Mr. RudyardKipling, of the
W~orkof theCommission;Illustrations,by Mr. DouglasMacpherson,showingthe CemeteriesandMemorialsastheywill appearwhencompleted. Gel. (Gd.) -
War Graves. How the CemeteriesAbroad will beDesigned. Reportby Lieut.-Colonel Sir Frederick Kenyon, ‘K.O.B., Director of the British Museum,3d. (3d.)
WA~OF 1914-18:— ‘ - ‘ ‘ • ‘
Despatches(Navaland Military) relatingto Operationsin theWar- I. Sept., Oct., and Nov. 1914. With List of llonour~and RewardsCon-
ferred. With SketchMap. (2(L) ~3d.)II. Nov. 1914 to June 1915. With Namesof Officers mentioned and Awards
of the Victoria Cross. Gd. (7d.) -
iii. July to Oct. 1915. With Names of Officers and Men mentioned,andAwardsof theVictoria Cross. 3d. (3d.)
• [V. Dcc- ii, 1915. From GeneralSir Ian Hamilton, G.CJ.13.,describingtheOperationsin the Gallipoli Peninsula,including theLaudingat ~uvla
• - Bay. 2d. (2d.)V. Jan. to April 11116. With Namesof Officers and Men mentioned,and- • Awards of tho~VictoriaCross. Gd. (6d.).—~VI. May to Dec. 1916. ‘WIth Namesof OfficersandMen Awarded theVictoria
Cross. is. (18.)VII. Dec.1916 to July 1917. With Namesof Officers and Men Awarded the
Victoria Oros~.Pci. (8(L)• Vu-I. July 1917to June1918. With Name, of Officers and Men Awarded the
- ‘ ‘ Victoria Cross. is. 6t1. (is. 4d.) : -
• IX. July to Dec. 1918. With Namesof Officers andMen AwardedtheVictoria- Cross. 1.. (lOd.)
- X. Jan.1919 to Feb. 1920. With Namesof Officers and Men awardedthe -
- ‘ Victoria Cross. (in thepress)Parliament’sVote of Thanksto theForces. Speechesdeliveredin the Houses0!
• - Parliament,Westminster,on Oct. 29, 1917. itt. (1(L) -
WAR OFFICE LIST, AND ADMINISTRATIVE DIRECTORY FOR THEBRITISH ARMY. 1914. SoldbyIiarri son~ Sons,45, Pall Mall, S.TV. 1. 5.. net.
WOMEN’S WAR WORK in maintaining the Industriesand ExportTradeof the -
