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Publication numberUS559495 A
Publication typeGrant
Publication dateMay 5, 1896
Filing dateSep 15, 1894
Publication numberUS 559495 A, US 559495A, US-A-559495, US559495 A, US559495A
InventorsJohn Rabieff
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 559495 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

1o sheets-s eet 1 (No Model.)


Patented May 5, 1896.


(No Model) 10 Sheets -Sheet 3. J. RAPIEPP. AUTOMATIC SHELL FUSE.

Patented May 5; 1896.

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0 A l w I (No Model.) 10 sheets sheet 4. J RAPIEFF. AUTOMATIC SHELL FUSE.

No. 559,495. Patented May 5,1896.


6'. J- Cad;


Patented May 5, 1896.

wwmaoeo g; Q Qummboz M 361 A. atko'zmugs 7 v...... e e h s m e e h S w E S U .P. F FM m m Rm J m U A a d 0 M 0 m Patented May 5, 1896.

l/mtwwms 154M. 9

(No Model.) 10 Sheets-Sheet 10. J. RAPIEPF. AUTOMATIC SHELL FUSE.

Patented May 5, 1896.




SPECIFICATION forming part of Letters Patent N o. 559,495, dated May 5,1896. Application filed September 15, 1894. Serial No. 523,165. (No modeld To all whom, it may concern:

Be it known that 1, JOHN RAPIEFF, a citizen of Russia, residing in the city, county, and State of New York, have invented certain new and useful Improvements in AutomaticFuses,

of which the following is a specification.

The present invention particularly relates to a fuse for explosive shells-.that'is to say, to a fuse carried by the shell, that is adapted at the proper time to fire the bursting charge,

- also carried by the shell.

The im rovements consist essentiall ina a I norniall restrainedand s P111" r0 ected s P J hammer or hammers and one or more percus sion-primers arranged in the path-of movement of the hammer and to be struck thereby to iire the bursting charge. Normally the hammer is held away from the percussionpriiners by a positive retaining means combinedwith a releasing or protecting sleeve w h is adapted to free the retaining means to c able it to release its hold upon the hamat the moment of impact of the shell with lll the target. The structure also includes one or more radial hammers with coa'cting percussion firing-pins and'an interposed protectingslecve which normally protects the firingpins from the hammers'but which is adapted at the moment the projectile is propelled fromthe gun to move to uncover said firing-pins, so that the radial hammers may be free to strike them should they become operative by the shell striking on'the side of its head insteadof head on. They improved structure also includes a removable fuse-case containin g the detonating hammer or hammers, the several firing-pins, and other coacting parts, adapting the fuse mechanism for transportatlon independent of the projectiles and to be inserted in place in the projectile just beforeuse.

The accompanying drawings illustrate a practical embodiment of. the invention, in which Figure 1 is a longitudinal sectional elcvasil-ions. 'l ig. -l is a crosssect-ional elevation projectile.

The fuse A is shown as a head-fuse locatedwithin the head of a projectile B, and is arranged to be inserted bodily in place therein,

ready for firing. The fuse in the main con sists of a cylindrical body 50, screw-threaded, to which is an annular extension 50, having a head-fiange 51*, arranged, when the fuse is in place in the projectile, to seat against the end of the inner head B of the projectile andto be held firmly in place by a screwthreaded cup-shaped cap 53, which closes the front end of the projectile. The position of the fuse is assured with respect to the inner head Bby a guide-pin 51", that enters a slot in the end 52.

The interior of the body 50 provides a hammer-chamber and the extension 'a retainer-chamber 40, communicating with the hammer-chamber, the chamber 40 being closed by a screw-cap 44, which has a handle 4-5, bywhich the fuse, as a whole, may be handled before and while being placed within the her in, with which communicate a number of longitudinal channels 3, intended to contain a quick or time train or charge of gunpowder. The front of some of the channels 3, two as here constructed, which preferably containa time-train, communicate with flash-passages 2 of nipples 1, arranged to support acap which is exposed to the hammer-chamber +0. The other channels 3 communicate in front with a plurality of flasl1-passages 4, between which and a firing-pin 5,projectin g outwardly and exposed to the exterior of the extension when the pin is struck. The rear end of the body 50 is screw-threaded to a ring 47, which in turn through a ring 48- is connected to the front end of a case 4-9, containing a priming charge of dry gun-cotton or other suitable explosive. The ring 47 also carries a gland 30, between the flange of which and the rear end of the body 50 is confined the flange end Fig. 5

The rear of the body has a 0113.111

'95 50", is also arranged a cap to be exploded- Ico' -of a ce'ntral case containing, preferably, a. charge'of gunpowder or other explosive, which projects within the chamber 46. Be-

tween the rear end of the case 31 and the flanged ring 30 there is supported a plate 32, having a central hole at its frontwith the interior-of the case 31 and at its rear with a .nate' of mercury. The plate 32 is directly confined between disks or washers of lead 34:, or other substance insensitive to the vibrations of the metallic portion of the fuse and 'of the projectile for the purpose of deadening the vibrations, thus preventing the premature explosion of the fulminate of mercury.

Immediately in front of the ring 47 the body 50 supports a recessed sleeve 53, held to the :body by a shearing screw or pin 54. In the recess of the sleeve 53 and surrounding the body 50 is arranged a coiled spring 55, the front of which presses against the shoulder 57 oi a releasing or protecting shield or sleeve 56, which overlies the sleeve 53 and also at its front end the extension 50, the rear end of which extension forms a front stop limiting the forward movement of the sleeve 56 when it is projected forward by the spring 55. The releasing-sleeve .56 is normally con nected to the body 50 through-'the'sleeve 53 by a divided or two-part bolt 58, the inner portionof which bolt projects into a rearwardly-inclined recess 59 in the body 50. The.

forward portion of the releasing or protecting sleeve 56 has a plurality of holes 60, arranged, when the sleeve is proj'ectedforward, to alinewith and expose the firing-pins 5, as in Fig. 2, and with'a set of holes 61 for coincidence at the same time with holes 62 in the extension In the hammer-chamber 40 is arranged a pair of spring-pressed hammers 4L1, mounted together on apivot 6 and having heels 7, borne upon by slidableblocks 42, seated in recesses in the body 50 against springs 43. The two ends of the hammers when :rocked on' their pivot are arranged to strike caps on the nipples 1, as in Fig. 3, but normally are arranged to lie adjacent one another and be confined is-held seated within the chamber 40 against the frontf'end of the body 50, closing the chamber 40, by-a spring 37, interposed between the cap 44 and the retainer; The retainer is nor- 6 5 mally locked inplace by one or more balls 38, which are seated in the holes 62 of the extension and project a suflicient distance into the The weighted'retainer, tripper, ortrigger 36 chamber 40 to prevent the forward movement of the retainer, the balls being held in place and from accidental displacement by the solid portion of the sleeve 56, but adapted to drop outward from the holes in the exten sion 50 whenthe holes 61 in the sleeve 56-coincidewith said holes 62. small cylindrical-case 33, containing fulmisupports aplurality of radial hammers .64.

equal in number to the firing-pins 5 and in position to strike said pins, .when the protectingsleeve 56, a solid portion'of'which is normally interposed between the hammers and the pins,

as in Fig. 1, is moved to bring its holes in line" with the pins to expose-them to the'hammers'. Asshown iii Fig. 1, each .radial hammer 64 has its head held -j ustbehind and in contact 1 with the exterior wall of the projectile-head, and is seated upon a spring 65, yieldingly hold- -ing the hammer outward against said wall and against the force of which spring the hammer is moved inwardly to strike the pin should the projectile hit the target on its side instead of head on. A stop-pin 66 is employed to hold the hammers in place duringassemblage.

Iii-operation, at the moment of the propulsion of the projectile along the gun-barrel, the shock of the setback of the sleeves 53 56 and the spring 55, contained between them, is

sufficiently great to. more them rearward and to shear the screw-pin '54,'thereby disconnecting said sleeve from the body 50 and bringing bot-h rearwardly against a buffer 67, provided on the ring 47. This rear-ward move- IOO ment of the two sleeves causes the incline of the recess 59 to force the two-part lockingbolt 58 outwardly, so that the two sleeves are no longer held together, whereupon the spring 55, after the acceleration of the projectile ceascs,. m'oves the protecting-sleeve 56 for- Ward into the position shown in Fig; 2, at the 1 same time holding the recessed sleeve 53 in its rearmost position against the buifer 67. In. the forward movement of the protectingsleeve its forward end enters an annular pocket'68, formed in the extension 50", and,


fitting said pocket,'snu'gly cushions against a small body of air trapped therein, which may be regulated inany proper manner, and the sleeve-.may be locked in this position by a spring-pressed bolt 88, supported by the fuse} body in position to interlock with a recess 89 In the forward position ot the j in the sleeve.

sleeve 56' the holes 60 have been brought in line with the firing-pins 5, so that the radial hammers are free to act to strike one or more of such pins, and the holes 61. have been brought in line with the holes 62, so that the balls 38 may leave their places, and thus no longer act to lock' the retainer 36 against movement. Such is the condition of the fuse during the flight of the projectile. At the moment the projectile strikes the target the retainer 36, due to its inertia and the conscquent retardation ofthe projectile, jars off its seat or moves forward against the pressure of the spring 37, and thus releases its hold of the ends of the hammers 41, which thereupon are forcibly rocked outwardly in opposite directions under the force of their ofthe time-train channels springs 43. to strike the caps on the nipples or anvils 1, as in Fig. 3, whereby the train in the channels 3is fired.

The fire from thetime-train in the channels 3 ignites the flocculent gun-cotton in the chamber 46, and this in turn ignites the gun powder in the central case 31, which in turn explodes the fulminate in the case 33, and the latter detonates the dry gun-cotton in the case 49, which in turn detonates the main charge of explosive carried by the body of the projectile, as is usual. In practice the vent a from the flash-channel 2 and the ends 3, entering into the chamber 46, will be plugged or covered with some suitable paper or cloth washer b, which will be Waterproof and cemented down in place, and likewise there will be a similar washer 0 covering the perforation leading to the fulminate-case 33, so as to divide or separate the different charges of explosive from each other and confine them in place. So, too, the slidable blocks 42, bearingagainst the heels of the hammers 41, will beheld by the springs 43 01f from the shoulder 6, so that in the setback, at the moment theprojectile is propelled through the gun, the shoulders will stop the rearward motion of the blocks 42 and sleeve moves forward in Fig. 2 the bolt is under pressure of the jacent the rear ehamber46 are made thinner, as at a, than at other portions, and the powder-case 31 supports acap-anvil 31, protected by a fragile cap 31", immediately behind'and not touching a solid so that should the projectile and fuse-body be crushed by the impact with the target the collapse of the body will first be had at the weak portions :1: and the cap on the anvil 31 "be exploded to fire the powder in the case 31 and detonate the fulminate in the case 33.

In the modification shown in Fig. 6 the weighted retainer 36 is confined to its seat by a spring-seated -bolt 70, which is normally held in place by the overlying solid portion of the protecting-sleeve 56; but when the into the position shown free to drop outward1y spring through the hole 61 and thus release the retainer 36. In ad- :dit-ion to the freeing of the hammers 41 the weighted retainer 36, after'being releasedby the bolt 70, acts itself as a hammer to strike a forward firing-pin 10 to explode a cap on the anvil 11 to ignite, through the flash-channels 12, the time composition in the longitudinal channels 3. The anvil -11 and flashchannels 12 are provided in a central-headblock 13, forming the end of the chamber 40, thcspring 37 being interposed between said head and the retainer 36. {The head 13 also* supports another anvil 14,- projecting forghtand supporting a ;1' .zLt

head portion of the fuse-body,

.as inFig. 6, is

cap adapted to by the alinemqnt of a hole 20 in the protect Y i struck at the proper time bya rearwardlymoving hammer-sleeve 15. his hammersleeve is connected at its front end to an in-' ;wardly-movable exterior head 16, forming the head of the projectile and normally held in place against movement by a shearing-pin '17. This head 16 is arranged'to be moved, as indicated by dotted lines, when striking a water-target or other object, which may be struck head on by the projectile, the movement of the head being opposed by a suit-able spring 18, interposed between said movable and an annular cup-shaped seat formed atthe inner end of an inwardly-projecting sleeve 19, carried by the cap of the projectile 53. Normally the hamm head 16 is locked against movement by a bolt 20, spring-pressed outwardly, which bolt in turn is held in locking position by the eccentricadlyshaped head on the longitudinallymoving pin 21, (see also Fig. 7,) which pin is held in place by a shear-pin 22, and its end is arranged to be struck by the end of .the protecting-sleeve 56 when said sleeve moves forward to its foremost position (shown in Fig, 2) in the manner before described. The sleeve thus strikes the pin 21, shears its shearingpin 22, and moves the eccentric head from contact with the bolt 20 and allows said bolt to spring outwardly, having released the ham-v mer-sleeve 15, so that such sleeve may operate to explode the cap on the anvil 14 should the movable head 16 be moved inwardly when the projectile strikes the target. tion of the --hamm ers 11 is similar to that of the hammers 41, before described. They differ somewhat in construction in that they are mounted on separate pivots 6*.

In the modification shown in Fig. 8a tubular form of hammer 36* is arranged to move forward at the proper time under the pressure of the spring 36 to'strike one or the other or all of a ignite caps on the anvils 11 to-ignite the time composition in the channel or channels 3, as before. Thev hammer 36 is locked in place by a pair of two-part bolts 36, which are confined against accidental displacement by the overlying solid portion of the protecting-sleeve 56, which bolts or the outward parts of them are arranged to be freed by the or 15 of the movable The operaalinem'ent of the hole or holes 36! in the sleeve I 56 when the sleeve has moved to its foremost position. The inwardly-movable head 16 in this case, instead of moving a hammer-sleeve, connected to and moves a taperended bolt 15", the taper of which is arranged, when the head 16 is moved inward, to bear against the inner ends of the two-part bolts 36 and move them outwardly, and thus free the hammer 36 and permit it to be projected forward by the spring 36 to strike one or all of the firing-pins 10.

In the modification shown in Fig. 9. the taperend .bolt' 15 is locked in place by one or moi'e'loeking-bolts 20, which are released ing-sleeve 56. The ham1ner'36 in this case the sleeve 71 forward toreinove-its inner end is arranged to move rearwardly against caps from holding the .balls 71? andthus release 7 on'anvils 11", said hammer beingprojected the retainer 36, so that the latter is freeto do by a spring 36 mounted between the ham- :inove-forward at the moment of impact'of the '1'] mer and a-fiange on the taper-ended bolt 15". projectile with the target. The. sleeve. 77, is The hammer is held in place by shearing-pins heldin place, its-before,- by a shearing-pin 7 I 36 and, as before, is locked in place by a' Instead of the'centralbolt 74? of Fig. 11 holdpair of divided locking-bolts 36, which are ing the retainer 76 by direct contact, the balls 75 arranged to be displaced to release the ham- 71 as in Fig. 13, may be interposed between o mer by the inward movementof the taper the bolt and the retainer, the operation being end of the bolt, as before, the spring 36." bethe same as that described in connection with ing strong enough to shear the pins 36 to en- Fig. 11. Y r tirely free the hammer. a In'themodification shown in Figs.14, 15,and 80 In the modification shown in Figs. to 13, 16 thehainme rs 41 are simple spring-blades f 5 inclusive, different means are shown for locksupported at their inner ends by a block 80 ing and releasing the weighted retainer 36. in a removable head 81, held in a seat at the and thereby releasing the hammer 41. The. rear of the body 50, the block being held in I retainer is held in its seat against the end of place by a screw-threaded sleeve 82. The 85 the body 50 in Fig. 10 bythe abutting end of ends of-the spring-bladed hammers areheaded 20 a frontsleeve 71, that is mounted-to slide in and confined by the retainer 36, as before, the a central opening in the forward extension 50 retainer being held in place by a central bolt of the body port-ion of the fuSQQWSaid-sleeve 74. This bolt is mounted in a central perbeing locked in place by a two-partlockingforatiorraip the front cap-piece 44, secured 9o bolt 72 against the pressure of a? confined to the body portion of the fuse, andis secured 2 5 spring 73. 'VVithin the sleeve is mounted a "in position by a two-part bolt 7 2, that is arrod 74 with aflared head, the rod being c011 ranged to be moved to release the bolt 74? by nected to the sleeve by a-shearpin 7 5, which a longitudinal bolt 21", mounted in the bpdy on the setback at the moment of propulsion 50 in position to be struck and moved forward 95 1 of the projectile in the gun is sheared, so that by the protecting-sleeve 56' as the l'atter'moves the rod may move rearwardly,-movingby the to its foremost position in the mannerbefore incline'or flare of its head the two-part lockdescribed. The longitudinal bolt 21 is held ing-bolt 72 from place and thereby-releasing against premature movement by a shearingthe sleeve 71 and perm'tt'ing the spring 73 to pin 21",-andits forward end is inclined to enroomove the sleeve forward and release its end gage and move the two-part bolt 7 2 inwardly, 3 5 from contact with the retainer 36, thereby "such movement being had against a spring freeing the retainer, so that at the moment 72, mounted in the head of the central bolt of impact 'with the target such' retainer will 74. In the forward movement of the sleeve move. forward against the force of the spring 56 its end meets the bolt 21 and moves it-fo'r-' I05. 37 to release the 'hammers..41, which are of ward, as shown in Fig. 15, releasing the two- 40 the construction previously described. part bolt 72 and allowing the central bolt 7 4 In Fig. 11 the weightedi'etainer 36 is locked "to move forward under the pressure of the in'place by the end'of a bolt74 that is confinedspring73,thus-releasingtheretainer mounted within a sleeve'76, carried by the 36.- Upon the retardation of the projectile no head of the extension of the fuse. The on striking the target the retainer 36 moves 45 bolt is locked in place against the pressure forward, as in Fig. 16,releasing thehammers.

5 o face bears against the two-part locking-bolt In the construction shown in Fig. 12 the 1 6o rality'of interposed balls 71. Said sleeve is *6 5 setbackmoves hetwo-partbolt inwardly and of a confined spring 73 by a two-part. bolt 41 andallowing them to strike. the caps on 7 2, which bolt is arranged to release the bolt the anvils 1 through the interposed firing-pins 74 at the setback by the movement of the. 1 inarnanner similartothat before described. sleeve 77,.whose inclined or flared inner sur f In the construction "shown in Figs. 17 and 18each "of the hammers 41 is-pivoted on an independent pin 6 with it'sxheel having a I smallroll, bearing uponablock 42, spring.- pressed by'-a sprin 43,:afiinthe structure r20 shown in'Fig. 1. Each-hammer is held from premature movement and iis'bor'ne upon in front of its pivot by a rod'83,the head of which "is spring-pressed;outwardiygbutds confined a in place in the normal position of the parts i 25 by the overlyingsolid portion of "the protecting-sleeve 56, and adapted to release the rods when said sleeve, duetothg setback before: described, is in'its foremost PQSition by the 'ali'nement of a hole 84-inthe sleeve with each I 13c rod 83; Between the extends a trigger in the forni of f cOnicaI-headedrOdS GF, I forming the-tailpieceof awe'ighted sphere-or other shab fl: EiQQQ ifi&ti$h a fi ims I and moves itinwardly, the inner part into a recess inthe bolt 74. The sleeve 77 is held in place against premature movement by a shearing-pin 7 5. 3

central bolt 74 is mountedrigidwith the head of. the body 50 of the fuse, over which bolt is a sleeve 71- with its inner end holding the retainer 36 securel'y inipiace through a pluheld rigid with the central bolt by the twopart-bolt 72, the outer. end of'which bears against the inner. surface of another sleeve 7 7,- the inclined" or flared surface of which on the eve..7 .f

position the hammers 41 are locked against movement, also confining the trigger-weighted piece 36" against movement by the action of the protecting-sleeve 56, through the rods 83 before referred to, the line of contact of the rolls on the rear ends of the hammers with the spring-pressed blocks 42 being such that the tendency of the blocksupon the hammers is to force their front heads inwardly. Upon the setback the rods 83 are released and fall from place, and at the moment of retardation or impact of the projectile with the target the Weighted piece 36" moves forward by its momentum, so that its conical inclined or wedgeshaped tailpiece rocks the hammer-heads outwardly, changing the position of the point of contact of the hammer-rolls with the blocks 4C2, asin Fig. 18, each of which is thereupon free to operate to force each hammer under spring-pressure against a firing-pin 1 to explode the cap upon the anvil 1, with results similar to those previously'described.

In Figs. 19 and 20 other forms of hammers llal are shown adapted to the structures herein described. In Fig. 19 the pair of hammers are acted upon by a single helical spring 1L3 confined between them-just in front oftheir pivots 6, the hammers being retained in position ready to strike by the weighted retainer 36. (Indicated by dotted lines.) In Fig. 20 the pair of hammers' fl mounted upon pivots 6 ,are acted upon by spring-blades 43, the hammers being held in position to strike the caps by the retainer 36, as before. It should be remarked that the freedom 'with which the retainer 36 shall releasethe'ends of the hammers maybe governed by the shape of the recess (i in which the hammer-heads project in the retainer. Thus if the recess be undercut, as indicated, the freeing of the hammers will be less delicate, and if such recess be formed the reverse of undercut the holding action of the retainer will be exceedingly delicate, and thus any degree of sensitiveness to movement may be provided for.

In Fig. 21- the weighted retainer 36 is held in place by an inclined rod 38, which in turn is confined by the protecting-sleeve 56 and released'when the sleeve is in its foremost position by the coincidence of a hole 61 in the sleeve with said rod 38. The retainer in this structure holds in striking position a ball-shaped hammer 41 through the interposition of another ball m, which is located in an opening in the wall of the body 50, separating the retainer-chamber from the hammer-chamber 4:0. lVhen the retainer 36 moves forward at the moment of impact of the projectile with the target against the pressure of its spring 37, the ball m is released her 40 by the pressure of the spring 43 which is then free to suddenly project the hammer 41 forward against-the firing-pin 1 to explode the cap, as before, with like efiect. h

In the modified structure shown in Figs. 22 to 24, inclusive, the tubular or sleeve shaped hammer 41 is mounted in a central chamber of the fuse-body with its rear wall seated against a confined spring .43" and held in such position compressing said spring by a pivoted detent 86, that is arranged to be tripped at the proper time by the rocking of a trigger-lever 87, one end of which lever is in position to be struck by the forward blow of a trip or ball 88, seated in the tubular portion of the hammer 41. The detent 86 is locked in holding position by a bolt 38; that is confined by the solid portion of the protecting-slee e 56, which bolt is freed by the coincidence of a hole 61; in the sleeve when the sleeve is in its foremost position, as before described. The

ball 88 is yieldingly confined in place by the v bent-down ends of a spring-blade 89, carried by the hammer 41 and is also looked in place and released by the protecting-sleeve in a manner similar to that of the bolt 38. At the setbackon the propulsion of the projectile through thegun the protecting-sleeve 56,

releases the bolts 38 and 90 and places the parts in. condition for action. of the projectile with the target, the hammer 41 still being held-by the detent 86, the trip or ball 88, due to its momentum, forces the On the impact.

ends of the springeblade 89 asidefand suddenly strikes the lever or levers 87, which-in turn rock the .detent 86, freeing the hammer 41 which thereupon is forced forward by the spring 43? to strike the firing pin or pins 41. as before and with like effect.

It may be stated that while the fuse fully charged and set ready for insertion in place in the projectile is being handled andtransported, it is preferred to lock the parts against accidental movement, as by a pair of pins 8 locking the hammers 41,and by a thumb-screw 91 looking the'sleeve 56 securely to the fusebody, as in Fig. 5, and'locking the bolts and sleeve .of the structure shown in Figs. 10 to 12, as indicated bydotted lines, whiclrpins 8 and screw 91 will be removed just previous to placing the fuse in position in the projectile.

It will be understood that. while I have illustrated the several novel features as combined in a' single fuse part thereof maybe used independent of others and in other kinds striking position and-free to move by momcntum at the moment-chimpact with the target, by the retainer and is forced intothe'chamv and a releasable lock for the trigger released by the setback at the fitment as set forth.

- 3. The combination with a fuse having'a plurality of eXteriorly-pro ecting firing-pins, 3 of a plurality of hammers adapted'to' strike-5.

said pins, and a longitudinally-movable shield ing-pins', of a number of radially-mounted.

or sleeve movable to exposesaid pins-to the hammers, as set forth.

4. The combination with the fuse-body supporting a number of exteriorly-proj ectin g firhammers for said pins,and a protecting-sleeve surrounding the fuse-body and normally covering the firing-pins, and adapted to move at the setback to expose the pins, as set forth. 3

5. The combination with the'fuse-body,supporting a number of exteriorly-projecting firing-pins, of a number of 1 radially-mounted hammers for said pins, a protecting-sleeve surrounding the fuse-body and normally covering the pins, and a spring for moving the sleeve forward to uncover said pins, as set forth.

6. The combination with the fuse-body,smp-

porting a cap-anvil and a hammer for exploding the cap,of a longitudinally-movable shield or sleeve and apart or body interposed between the sleeve and hammer normally holding the-hammer against movement and releasing the hammer upon the movement of the sleeve, as set forth.

7. The combination with'a pair of springpressed-hainmers and their respective cap I anvils, of a weighted trigger holding the ham- 35' mers in position to strike and a spring for the trigger compressible on the movement of the *trigger due to its momentum, as set forth.

8. The combination with the fuse-body, its cap-anvil and hammer, of a spring-pressed longitudinally movable protecting sleeve normally preventing the hammer from striking the cap, another sleeve cooperating with the protecting-sleeve, a two-part locking-bolt locking the sleeves together, and means forreleasing the bolt to permit the, protectingsleeve to move forward, asset forth.

9. The combination with the fuse-body, its;

. cap-anvil and hammerjof a spring-pressed longitudinally-movable sleeve, a locking-bolt steam:

"noriiian lockin the sieve against-mote. '0

"other bolt fdlglOGkiIlg, the sleeve in position.

after movement, as set forth. 1

a 10.. The combination with the fuse-body, its cap-anvil and hammer, of a spring-pressed longitudinal-lymovable sleeve surrounding said body and normally preventing the ham merfrom striking the cap, a lock for normally holding the sleeve against movement,- means for releasing the lock at the setback and an ment, means for releasingsaid bolt, and anannular front recess on the fuse-body formi-M g a front air-cushion seat for the, sleeve, as set forth. v I

11. The combination with the fuse-body,

its cap-anvil and hammer and having'a rear chamber, in communication with the flash- 'channel of the anvil, a cap-anvil projecting.

into said rear chamber. toward a solid portion of the fuse-body'anda collapsible wall .to said chamber to permit the cap on said anvil to be exploded by impact with the solid portionof the body, as set forth.

12. The comhination'with the fuse-body having a collapsible wall, of a cap-anvil supported axially of the fuse-body and, an opposed transverse striking portion of vtlief usebody, as set forth. v v H 13. The combination of the 1 chambered fuse-body, its cap-anvil and hammer,; of' a front cap closing the end of the body and having a handle for bodily handling the fuse, as set forth.

1,41; The combination or the fusebody, its

cap-anvil and hammer, a rearfulnfihate-case [carried by the body and portions of material insensiti ve to the vibrations of the metal portions of the fuse interposed between said case and the fuse-body, as set forth.

15. ,The combination ofthefuse-body, its; .cap-anvil and hammer, a rearpowder-case and fulminaie-case, and a gland holding both in place to the fuse-body, asasft forth.

In Witness whereof I havehereunto signed my. name in the presence oftwo witnesses.

Vitnesses GEO. H. GRAHAM, H. N. Low.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2737117 *Jun 10, 1953Mar 6, 1956Cooper Lyle MFuze
US2989923 *Jan 20, 1958Jun 27, 1961Fernando PonsDetonator
US4619200 *Mar 27, 1985Oct 28, 1986Morton Thiokol, Inc.Impact ignition device for a plurality of stab type primers
US4896607 *Mar 3, 1989Jan 30, 1990Hall James CBoosted kinetic energy penetrator fuze
US7437995 *Nov 15, 2006Oct 21, 2008Omnitek Partners LlcAxially compact mechanical igniter for thermal batteries and the like
US7587980 *Aug 2, 2007Sep 15, 2009Omnitek Partners LlcMechanical delay mechanisms for inertial igniters for thermal batteries and the like
Cooperative ClassificationF42C15/24