US1988467A - Time fuse for projectiles - Google Patents

Description

Jan. 22, 1935. s wlLEY I TIME FUSE FOR PROJECTILES Filed March 10, 1954 Invent m E amu E1 Wiley EV Att mrne Granted 9 under the \act of f March 3, 1883, as

1; amended Apr-i130,- 11928 370 757) 1 The invention describedhreinjmay be manu-f Patented Jan. 1935 i factured and used by or forlithe Government for governmental purposes, j'without the] payment to is invention relates to a time fuse for prd jectnesq e t I "In the powder time fuse whichhas been usd form anyye ar's the powder train is packed in grooves or channelsand j during combustion the residue of the powder frequently obstructs the vents in .thefuse casingand affects thefrate of burning. The powder time train is also readily n The purpose ofthis invention isto provides powder time fu se in whichthe'powder train, is placed in'a metallictubular vcasing which is cut uponactuation of'the firing'mechanism provided for igniting'the powder train; Z A further objectf'of theinvention is to so organize-theseelements thatthe fuse may be set construction hereinafter described" and claimed,

it being understood that changes in the precise embodiment of the invention herein disclosed may be made within thes'c ope of what isclaimed zvithout departing from the spirit of ,the invenj A practical embodiment be me invention is illustrated in the accompanying drawing; wherein: j 1,; 1 Fig. 1 is afhorizontal sectional viewof'tlieimproved fusetakenon thelinel- -l of Fig. 2 isa longitudinal sectional viewonthe line 2 2 of Fig. 1. q

Fig: 3 is a fragmentary longitudinal sectional:

view on the line 3-3 of 'Fig; 1.

time scale. l

The fuse consists generally of a base5, a head 6,.and. a rotatably mounted ring '7 interposed between a portion of the base and head. The base is formed with a tubular stem 8 having threads 9 providing for attachment of the head 6. A plunger 10 mounted in the usual manner in the mouth'of the stem by the ring 11 carries a primer charge 12 adapted to be setoff by a firing pin 13. The forward face of the base, constituting the seat for the ring 7, isformed with an annular channel 15 for partially receiving a metal tube ldysuch as lead, in which 'iscarried a powder time train l't The'endsof the tube 16 are insertedinrecesses 1 8 and19 in'a; block 20 which isfixed"'to' the base 5; The recess 18 "is blind while'the recess 19 is in communication with an inclinedpassage 21 in the base. The passage 21 contains a powder pellet 22 and leads to the boostencharge 23. in the rearend of the base. Theblock is also provided with an aperture 24 positioned ibetweenthe recesses 18 and 195 The" ring 7 is formed with an annular channel 2"5feomplementary to but of greater diameter thanthe channel 15 in'the base andpartially receivesthe tube 16. A radially disposed passage 26Lin the. ring 7 intersects the channel and is 'closed at its outer endby'a cover 2'7. A plunger 2j normally carried in the inner part of the passage '26jis adapted on being moved tocut the tube'16 and cover 27.

"Thetubular stem 8 of the base is formed with a"'serie sof radial ports 29 leading to an annular groove '30'which isdisposed in the plane of the plunger 28. f The position of the plunger 28 relative to the recess 19 is, indicated inthe usual manner employed in time fuses by means ofa mark 31 and scale 32 inscribed respectively on the rotatable ring? and on th e base 5; ,The plunger is in the safe positionwheri it ispositioned in line with the aperture. 24 in the block 20 so that in the event ofaccidental operation the plunger will be driven out train. 6'

L a projectileequipp'ed with the"fuse is fired from agun, the plunger 10 sets back and theprimer charge 12 is fired by the pin 13. The

5 of the fuse without cutting the time gases from the exploded primer charge 12' create sufiicient pressureto drive the plunger 23 through the'tube '16 and cover 27 and entirely out of the ring ,7. The fiame from the primer ignites the powder timetrain 17 which burns towards each n a of" its en"ds, but can only transmit-ignition from Fig. 4 is a view side elevation showingthe' the end in the open recess 19. The gases from the burningpowder train are "vented through the opening made in the cover 27 nular chamber, a tubular stem on the base having ports, a firing mechanism carried by the stem, an encased powder time train partially disposed in the channel of the base, a block in the base having recesses receiving the ends of the powder train, one of said recesses being blind and the other being open, said block having an aperture positioned between the ends of the powder train,

a ring rotatably mounted on the-base'a'nd having a channel complementary to the channel in the base but of greater diameter than the powder train, said ring also having a radial passage in tersecting the channel and in the planet-(of the ports of the stem and the aperture in the block, a cover closing the outer end of the passage in the ring, and a cutter for the time trainnormaily positioned in the inner end of said passage.

2. In a time fuse, a base formed with'an 'arinular chamber, a tubular stem on thebase JhaN- ing ports, a firing mechanism cari'ied by the:

mountedon the base and havin achanr'ie1com plementary to the' channelin the baseabut, of at meter than th p wder tra n, "said r n al havin a a l pa saselintexse tin the channel and mtheplahe ofthe po'rfiS Qftll' stem, a cover'closing the'outer endjof the passage" in the ring, and .a cutter for the time train nor, mallypositioned in the inner endof said Pass,

3.. In a time fuse, a base iormed'witli'ana nular channel, a tubular stem on the basehav ing ports, a firingmechanism carriedfbyiilthe. stem, an encased p w er time train part ly disposed in the channel of the base and having a'blind end and an open end, a ringfrotatably mounted on the base and having aichannel cornplementary to the channel in the base'butjof greater diameter than the'powder train; Said ring also having a radial passage intersecting the channel and. in the, plane of the ports (if-the stem,'a cover closingthe outerfend of the pas sage, and a cutter for the t metrain norm lly, positioned in the inner end ofsaid passage e. In atime fuse, a base formedwith an ah nular channel, a tubular Stern on {the basehaving ports; a firing mechanism carried by the stem, an en asedp vder ti t a n pa t a y dis osed in the ch nnel of the ba e n having a ihli id end and an open end, a ring rota'tably mounted on the base andhav nsa chann l omniementary to t channelin the base, said ring alsofhaving a radial passage intersecting the channel andlin the plane of the ports or the stem, a cover elosing the qu et,

end of-the'passage, and a cutter ifprl. tneutinie' train normally positioned in the inner end o f s aid passage.

tim fuse, 5.55 w 1 1 nular ha el, a tubula stem-on the ba gha ng" ports, a firing mechanism carried by the stem, an

encased powder time train partially disposed in the channel of the base and having a blind end and an open end, a ring rotatably mounted on the base and having a channel complementary to the channel in the base, said ring also having a radial passage intersecting the channel and in ommunic ti n w th th portsoi thestem a cover closing the outer end ofthe passage'and a cutter for the time" train normally positioned in the inner end of said passage.

"6. In a time fuse, a base formed with an annulaz; ehannel, ,atubular stem on the base having ports, a firing mechanism carried by the stem, an encased-powder time train partially disposed in the channel of the base and having a blind end and an open end, a ring rotatably mounted on the base and having a channel complementary to the channel in-th ihasasaid rin also having a radial passage, intersecting the channel and in communioa ion withithenorts of: th stemrand a cutter tor the, me train orm l y p s j oned in th inhe lehd'jof saidnassas g 7. In a time fusefia pass. an enclosed Powder me train carried b the bas and projectin above the surface of the base; a ring rotatably mounted ,o ithe-hase and ha sa channe p jectin pal of the time ra n i ravin anasseae'intersectin the then:- uel', a vet ,closin 'the ut rend o -t e pas a e, a'o'utj iof the.ti -1e t ain normally positioned ii the nner end of' sai passag a firing mechanism carried by the base fer driving the cutter through thetime tr in and c su e a i ins'the timeYtraiTi-L 9.. n a. tim lfiise, a bas "an noa'sed p wder time train .carriedfby the base, aring rotatably l f olint d on' the a e and having a passage, a cover olo ng thelputerfend of th pass a. eutterior he ime trai no mally positioned in theinner e d} i said' eessese and a firing sh:- anism' carried by the base for driving the cutter throu h the me trainalid closure and for i ni f imetrain. 1 v

10. In a time fuse, a casing, a powder time train inthe e sing vmeans i9 7 n in the time train, and means ad pted tobedr ven throughthe, well i he. sioebyse o tr e -din mean to v the casing.

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