US1309771A - Edward w - Google Patents

Description

E. W. NEWELL.

PROIECTILE UME FUSE.

APPLICATIUN mia wwf 23.1911.

Putfntud J uly 15, 1919.

- projectile stri EDWARD W. NEWELL, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOB T0 THB WESTINGHOUSE AIB BRAKE COMPANY,

CORPORATION '0F PENNSYLVANIA.

or winnnscoiim, riiNNsYLvANIA, 4|',

PROJECTILE TIME-FUSE.

Specification of Letters Patent.

Patented July 15, 1919.

Application llled Jul 23, 1917. Serial No. 176,804.

To all 'whom 'it may concern.'

Be it known that I, EDWARD W` Niiwnmz.` a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Projectile Time- Fuses, of which the following is a specification.

This invention relates to rojectiles, 'and more particularly to a time use mechanism.

The principal object of my invention is to provide a time fuse mechanism adapted to be controlled by means of a generated gas.

Other objects and advantages will appear in the following more detailed description of the invention.

In the accompanying drawing; Figure 1 is a central sectional view of a time fuse mechanism embodying my invention, and showing the parts in normal position; Fig. 2 a similar view, showing the parts in positions assumed upon firing the projectile from the gun; Fig. 3 a similar view, showing the positions of the parts after the fuse mechanism has operated to explode the projectile; Fig. 4 a sectional view of a portion of the fuse mechanism, showing the positions of the arts as assumed in case the iies an object before the time fuse operates; Fig. 5 a transverse section o'n the line c-a of Fig. 1; Fig. 6 a rear face view of a portion of the adjustable vent ring; and Fig. 7 an elevational view, partly in section, of the nose portion of the 'fuse in anism. V

As shown in the drawing, the construction may comprise a member 1 adapted to be screwed into the main casing of the projectile and having 'screw threaded engagement with said member is a fuse casing 2.

A sleeve 3 is screwed intothe rear end of member 1 and alongitudinally movable primer holder 4 containing a primer 5 normally engages an annular shoulder' of the eeve.

Slidiably mounted in a sleeve extension 6 of the member 1 is a firing plunger 7 adapted upon movement to engage the primer 5.

Normally engaging a forward annular shoulder of'sleeve 6 is a spring clip 9 and interposed between said clip and the firing plunger 7 is a coil spring 10.

. A piston 11 subject on one side tothe pressure in a r 12, is mounted in the fuse casing 2 and a spring 13 acts on the opposite side of the piston.

On the extension 6 is slidably mounted a sleeve 14, engaged `at the forward end by spring 13 and having a rear conical face 15 adapted to be engaged by conical heads of radially movable pins 16 mounted in the extension 6, said pins having inwardly extending conical points, adapted to enga e within a V shaped annular groove 17 of tc firing plunger 7 Screwed into the spring clip 9 is a rod 18 having the rear portion split to form fiared prongs 19 having the rear ends inclined 'to engage corres ending inclined surfaces on the primer ho der 4.

Screwed onto a forward threaded extension 2O of the casing 2 is a nose member 21 having a. central rearwardly extending sleeve 22 into which is screwed an auxiliary primer holder 23 containing a. primer 2l and mounted in a central bore of tlie sleeve 22 in an auxiliary firing plunger 25.

An annular chamber 26 surrounds the sleeve 22 and isadapted to Acontain a cartridge 27 formed of a substance which will generate gas when ignited.

The piston 11 is provided with a forwardly extending stem 28 which is normally secured to the nose member 21 by a small screw 29, so as to prevent movement of the iston by accidental projectile, the stem 28 being also adapted to prevent rearward movement of the auxiliary firing plunger 25.

Engaging a vertical face of the casing 2 is a rotatable ring 30 having a series of orifices 31 of varying sizes which open at one side t0 passages 32 of uniform size and at the opposite side to a groove 33 formed in a clamping ring 34 which is adapted to be screwed onto the sleeve 2() for clamping the ring 30 in its adjusted position. At one point in the. circumference of the ring 30 t ere is provided an atmospheric vent port 35, adapted to constantly register with the groove 33.

A- passage 36 adapted to register with the passage 32 opens into chamber 12 and jarring of the in order to hold the ring 30 in its adjusted i osea between tnerm `3() and the casing 2; i in rdetb 'facilitated e making ofI a, tight' v joint therebetween.

In operation, the parts are normally 6 the positions shown in Fig. 1 of the "diiiiw-- ingLwith the spring clip 9 held against by the prongs `19 of stem 18.

'The piston 1l is `maintained iny itsmfoi'- ward position by the screw 29 andstem28 prevents the rearward movement of firing pluri er 25.

theiclampingring. 34, is backed o and Athe ring 30 is inovedforward solas to clear Vthe in 37 and then the ring 30 is rotated to bring one of the orifices 31 into registry through passage'32 with passage 36, the -orifices 31 being of a calculated area suchvthat `the fluid within chamber 12 will escape ,in a redetermined period of time, as indicated y graduations (not shown) on the periphery of ring 30. l

The ring is then moved back, so that :the pin37 engages in a registeringpiissage 5 332;of the ring-and the clamping ring 34 is screwed home. A

,. .Upon firing the projectile from the gun,

:Z0-the piston, 11. iS thrown rearwardly by 4iiiertia, stripping thethreads of the screw 29 and compressinggthe spring 13 :igainstthe fg-ing .14, k1n itsrearward movement, the pisp `.ton 11engagesf the spring clip 9 and moves Y35 ASinne rearwardly, compressing the spring10- against the firing plunger 7, and finally, the

1 benl ends 0f Lheclp pass a shoulder 390i i Y thesleeve extension and fly outward, so, as to" preventanyl forward movement ofdthef ;clip and thuslioldthe spring 10 under cpm-jA iii P95319 Asis." i'vzi." ,-'i 1; y, -p `The.iieainivaridj movement .of stein 18`W 1th' ,clin creuses th. phones 1,9 `te collapses@ to permit their passage through the opening liilithe primer holder -ha Ythe position shown?, inln- 2 Qtiiheidrawine; i 1. n, y v,-x-.,'lp'heprgssureexerted y the heavylspriiig *.lraginstitha pins 16 is ,sufficient topreventg, s the outward radial movement of the pins by y the,pre,ssiire ots ,ring v10 which also fiets,

l i 5,52rearwgudly,=` so that the firing ,A en ,the pins throng -theiiring plunger 7. 1

.The iiiertiaof the auxiliary flfmgrllm? lf, .ofsanie, .thestem 28having beennioved' plunger| en.-` ages the auxiliary primer 24 w ich isigtihen, Y detonatedi and acts toy ignite thev cartridge., Y 27h Thi'sceiisest egeneriitionof gasfngliicli' e ,lille thec1nani-bcn' @2, at ,a Predeteliwiesl ,eresaii're the @mencion alidelze ,etiket i-iftlzdge'biiia @a ciilated, S0 as to piedini the i necessary volume of gas.

This gas pressure acts in chaniib'or 1"4 to",

hold the PistonA 11 at its rearwardpositionW against the counter resistance of spring 13,

A Q ml'raus't passage 3 Shoulder 8 by' spring 1()I and the `pi`iriie'ify holder 4 prevented froinrforward Inaveri-nentpi A Lemmi .mandarin-genie iiigliceof the projectile, the

als 'm Lchamhen 12 escapesit-hrough the orice* 31" which is iny communication through ypassa e with passage 36, the gas flowing then" through groove 33 to atmospheric exi #When the pressure in chamber 12 has been `reducedqto a redetermned degree, the pis- "ton 11 moties orward-and relieves the spring pressure exerted by sprin 13,011 ring 14 4and,finally the pressureo' spring 10 pre- 1)poirdcrates sufficiently toforce Vthe pins 16 V ,radially outward andthus permitthe firing iprojectile, A,

,phil l'to move rearwardl "and en a e Ptl'iieIiigiji'r'ner 5 as shown'in g of the digai'- ing, th'u's `detonating' the projectile.

f for any reason, the timing mechanism above described Should fail to act during the of the projectile, then upon the vpro- ]ectile striking an object or grazing an object in flight, the inertia of the primer holder 4 causesv its relative forward movement, forcing the split spring ring 40 outwardly so that the same will engage the firing plungeri', as shown in Fig. 4 of the drawing, rlid thus cause theexplosion of the projec- @Having now described my inventiomwhat claim` `as` newV and-desire to secure by Let- "ters Patent, is

1. 'In #projectile the combination with a chamber 'having a ventport and a time fuse fgas 'from Said substance to t erehyV create @.lid IPIG'SSUIB in said chamber. 1121111 a projectile, the combination with n ""cliamben'ha'ving a vent port open to the atinosplieie` and a time fuse' mechanism oper- A"ated upon 'a reduction vin' pressure insaid chamber, of means in the projectile for generiitin "and initially charging said chamber uid under pressure.

"f .;1n`*a. time fuse mechanism, the combiiiiiation with a firin plunger and xii/chafrrber "liaiiingfan atmospheric exhaust port, of a 1J`pilitmdevice controlled by the pressure in jsaidchamber-'for controlling the operation ,ofthe iiifingplunger and means for generatiinfg ,gas'ttil produce an initial ,fluid pressure lilartlbe'lr'.2 V i,

' Si. ina' projectile, the combination with anchainben aring plunger, and a piston subject the'pres'sure in said chamber and ifo brateji'fjupona predetermined reduction in res'sir'elin'said chamber for'eiecting the "operation 'fof said firing plunger, ofa sub- 'upon ignition yo f 5 daar. ii aidicliain frhand means operated upon `firing the rojectile from the g'un for"` `ignitihgsaid su stance.

a chamber having an atmospheric exhaust 5; In' a proJectile, the combination with` orin a gas port, a firing plunger, and a piston subject to the pressure in said chamber for controlling said plunger, of a gas forming charge and an auxiliary firing plunger operated upon firing the projectile from the gun for effecting the ignition of said charge to form gas under pressure in said chamber.

6. In a projectile, the combination with a chamber having an atmospheric exhaust port, a main firing plunger, and a piston subject to the pressure in sald chamber for controlling said plunger, of a gas forming charge, a primer, and an auxiliary firing plunger operated by inertia upon firing the projectile from the gun for detonatin said primer to effect the ignition of said c arge and the generation of gas in the chamber.

7 In a projectile, the combination with a main firing plunger, a chamber, and a piston subject to the ressure in said chamber for controlling said) plunger, of a cartridge composed of a gas forming substance and communicating with said chamber, a primer adapted upon detonation for igniting said cartridge, and an Aauxiliary firing plunger operated by inertia upon firing the projectile from the gun for detonating said primer.

8. In a projectile, the combination with a main firing plunger, a chamber, and a piston subject to the pressure in said chamber for controlling said plunger, of means operated upon firing the projectile from the gun for generating gas in said chamber and means for venting gas from said chamber at a predetermined rate.

9. In a projectile, the combination with a main firing plunger, a chamber, and a pis ton subject to the pressure in said chamber for controlling said plunger, of a substance adapted upon ignition to generate gas in said chamber, an auxiliary firing plunger for effecting the ignition of said substance, and means carried by said piston for normally preventing the movement of said auxiliary liring plunger.

10. In a projectile, the combination with a main firing plunger, a chamber, and a iston subject to the pressure in said cham er for controlling said plunger, of a substance adapted upon ignition to generate gas in said chamber, an auxiliary tiring plunger for efecting the ignition of said substance, means for normally preventing movement of said iston, and means carried by said piston or normally preventing movement of said auxiliary irin plunger.

11. In a projectie, the combination with a main firing plunger, a chamber, and a piston'subject to the pressure in said chamber for controlling said plunger, of a substance adapted upon ignition to generate gas in said chamber, an auxiliary firing lunger for effecting the ignition of said substance, a stem carried by said piston for normally preventing movement of said auxiliary plunger, and a screw, for normally preventing movement of the piston and adapted to be stripped from its screw threaded engagement with the piston by movement of the piston throu h inertia upon firing the projectile from e gun.

In testimony whereof I have hereunto set my hand.

EDWARD W. NEWELL.

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