US2595757A - Fuse - Google Patents

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Publication number
US2595757A
US2595757A US760425A US76042547A US2595757A US 2595757 A US2595757 A US 2595757A US 760425 A US760425 A US 760425A US 76042547 A US76042547 A US 76042547A US 2595757 A US2595757 A US 2595757A
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United States
Prior art keywords
groove
inertia block
slide
branch
fuze
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Expired - Lifetime
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US760425A
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English (en)
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Brandt Edgar William
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Anstalt Fuer die Entwicklung von Erfindungen und Gewerblichen Anwendungen ENERGA
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Anstalt Fuer die Entwicklung von Erfindungen und Gewerblichen Anwendungen ENERGA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C1/00—Impact fuzes, i.e. fuzes actuated only by ammunition impact
    • F42C1/02—Impact fuzes, i.e. fuzes actuated only by ammunition impact with firing-pin structurally combined with fuze
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/24—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by inertia means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/34—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by a blocking-member in the pyrotechnic or explosive train between primer and main charge

Definitions

  • fuze Numerous types of fuze are already known which are designed to be mounted in the ogival head, inside or at the base of explosive projectiles, and which comprise devices intended to ensure security against shock during storage or handling, security'in the bore on firing, to give delayed arming in order to avoid premature bursting of the projectile if the latter should, after discharge, encounter an unexpected obstacle, such as camouflage, branches, or the like, in the vicinity of the firer, and, moreover, to ensure on impact either instantaneous or delayed bursting.
  • an unexpected obstacle such as camouflage, branches, or the like
  • Such fuzes generally comprise a fairly complicated mechanical device, the functioning of which is controlled either by a clockwork move? ment or directly by the forces acting on the projectile on the firing of the shot.
  • the present invention relates to fuzescomplying with the above-mentioned conditions and with all requirements, while being of simple construction, capable of being made of very small dimensions, comprising a minimum of parts, being adapted to resist the stresses developed on the discharge of the shot, and, if so required, to resist the impact shock.
  • the fuzes of the present invention are of the type which are provided with a mechanical arming delay device, or mechanical safety orfiring device, comprising essentially two co-actingparts, one of which comprises at least one groove and the otherat least one slide adapted to run in 3 Claims. (01. 10278) inertia block in imposing it a rotary oscillating movement.
  • the opposing member can be an elastic opposing member such as, for instance, a spring.
  • the fuze can be designed with consideration to the characteristics of the equipment serving to discharge the projectile, the value of the charges employed, the pressures and the accelerations given to the firing of the shot, while assuring either time operation or impact operation, or again, while providing the desired bursting effects such as instantaneous or delayed burst.
  • the aforesaid groove comprises two unequal branches, one at least of which is blind, that is to say ends in a cul-de-sac.
  • the longer of said branches is preferably open at the end.
  • the slideforming the bolt In the position of rest, or the safety position, the slideforming the bolt preferably abuts against the end of the blind branch, the inertia block being immobilised in that position by the thrust of the opposing memher, for example a spring, which tends to keep the slide abutting thereagainst.
  • the inertia block Under the action of a sustained thrust greater than the action of the opposing member, such as a positive or negative acceleration, the inertia block is displaced, following the oscillating movement imposed on it by the zig-zag shape of the groove, and the slide proceeds to occupy at the point of the V the intermediate position in which it is engaged in the long branch of the groove.
  • the opposing member reacts, pushing back the inertia block in the opposite direction, while the slide runs along said branch of the groove, escapat the bottom of the blind groove, and the inertia block does not move.
  • This device used for example to bring about delayed arming and mechanical functioning in an og'ival fuze, is also suitable, by simple inversion or change of direction, for carrying out similar functions in a base fuze, or again in a firing device located inside the projectile.
  • the groove comprises a long branch and a, blind cavity in which the slide is adapted to engage in such manner as to lock the inertia block, undr the action of the opposing member, when it comes into the armed position.
  • the slide first runs along the long branch of the groove under the action of a thrust, such as the propulsive force of the projectile, and then, when said thrust ceases, it is pushed back by the action of the opposing member into the blind cavity, which replaces the short branch of the groove, and thus immobilises the inertia block, which has come into the armed position.
  • a thrust such as the propulsive force of the projectile
  • the fork of the two branches of the groove is disposed in such manner that one of them, preferably the blind branch, joins the other laterally.
  • the long branch of the groove will be rectilinear and preferably disposed in the axial direction, only the blind branch being zigzag in shape.
  • the branches of the groove are disposed in such a manner that the safety position and the intermediate position of the slide are on the same longitudinal axis.
  • the slide is a finger integral with one of the two co-acting pieces.
  • a ball partially imprisoned in a groove provided in one of the two co-acting pieces attends to the same function.
  • a device comprising a cap-carrying inertia block provided with a groove in accordance with the invention
  • a device comprising a cap-carrying inertia block provided with a slide in accordance with the invention
  • a device comprising a striker-carrying inertia block provided with a groove in accordance with the invention
  • a device comprising a striker-carrying inertia block provided with a slide in accordance with the invention
  • a device comprising a cap carrier-detonator adapted to pass from an inactive safety position relative to the explosive charge of the projectile to an active position in which the transmission of the explosion can take place normally on impact.
  • two concentric coacting inertia blocks are provided, one of which is immobilised in the safety position in the body of the fuze, through the medium of a yielding member, such as a ball, the liberation of which is dependent on the functioning of the other inertia block, which is subject to the action of the opposing member.
  • Retarded arming on firing of the shot is thus simply obtained in an instantaneous percussion fuze for projectiles propelled by a gun or acquiring their speed through a self-propelling charge and provided with a percussion head adapted to be driven back on impact.
  • the external inertia block can be disposed in such manner as to give, in the safety position, supplementary protection to the cap set back in the internal inertia block.
  • the invention also enables a very simple fuze to be designed for projectiles propelled by a gun or by self-propulsion, the arming of which takes place only on impact, the functioning of the fuze taking place through delayed percussion, only after braking and stopping of the projectile in the ground or any other objective, the opposing member being disposed in such manner that it reacts on the inertia block only on impact, the delay being produced at that moment.
  • the device of the invention can also be utilised to liberate, with delay, an obturator designed to prevent transmission of fire prematurely.
  • the inertia block can take the form of an obturating bell which, in the safety position, covers the piece with which it co-acts through the medium of the slide and groove of the invention, said bell preventing the transmission of fire until it is ejected by the action of the opposing member.
  • Figs. l'to '7 inclusive represent in axial section a fuze: in accordance with the invention and, in front view, its inertia block provided with grooves, in the various stages of operation;
  • Figs. 8, 9 and 10' show a fuze comprising a mobile detonator, in the safety position and in the armed position, as well as its inertia block;
  • Figs. 11 and 12 represent respectively a fuze intended to be placed inside a projectile, and its inertia block;
  • Figs. 13 and 14 illustrate respectively an inertia fuze with delayed arming, and its inertia block
  • Figs. 15 to 22 inclusive represent respectively various modifications of devices according to the invention, comprising an inertia block forming a bell-designed to prevent premature firing;
  • Fig. 22a shows an application of the device represented in Figs. 15 and 22.
  • Figs 23 to 27 inclusive represent respectively in various stages of operation,- a fuze designed to function with delayed percussion, together with its inertia block.
  • Figs. 1 to '7 The fu'zeillustrated in Figs. 1 to '7 is composed of a fuze body I provided in front with a percussion head 2, with a striker 3 and, at the rear, with a detonator 4'.
  • An inertia block 5 provided with a cap 6 and subject to the action of a compression spring I, which acts as opposing member by hearing against a rear rest 8 on the fuze body, is adapted to move axially in a cylindrical cavity 9 provided in the member co-acting with said inertia block 5.
  • This co-acting member is generally the body I itself; in the embodiment illustrated in Figs.
  • this member is a second inertia block II) concentric with the inertia block 5' and resting, in the safety position, on an annular projection II on the body I; this second inertia block I is disposed to be movable axially inside a cylindrical cavity I2 formed by the fuze body I.
  • the groove I4 (Fig. 2)' comprises two branches of unequal lengths I ia and I4b, disposed in the shape of a V and providing a zig-zag path for the slide I3.
  • the long branch Ma is open at its end I5, while the short branch I4b is blind, that is to say ends in a cul-de-sac at I6.
  • the blind branch Mb runs laterally into the long branch I 4a,'near the end I! of the latter, in such manner that the slide I3, when it is engaged in the long branch, can no longer go back into the blind branch.
  • the outer inertia block Ill which serves as seating for the inner cap-carrying inertia block 5, is adapted to act as a stop for the head 2' carrying the striker in the event of said head being accidentally driven into the interior of the fuse body I; to this end, said inertia block III is sumciently long so that the striker point 3 can in no case come into contact with the cap I5 as long as the latter is in the safety position (Fig. l), withdrawn in the cylindrical cavity 9.
  • the striker-carrying head 2 is immobilised by a pin 2i shearable on impact, or by any other means, such as, for example, a circular stop (not shown in the drawings) resting on a thin washer, which is likewis shearable on impact.
  • a spring 23, completely expanded, is placed in the housing constituted by the front part of the cylindrical cavity I2, between the internal face 24 of the striker-carrying head 2 and a shoulder 25 on the outer inertia block I9.
  • This Very weak spring 23 serves to keep th unit comprising the two inertia blocks 5 and I0, and therefore the cap 6, at a distance from the striker point 3 when the fuze is armed, and enables the fuze to be given extreme sensitiveness to impact.
  • the strikercarrying head can without danger strike with its face 2s against the extremity 26 of the inertia block I8, because the striker point 3 is too short to reach the cap S.
  • the cap-carrying inertia block 5- itself, being immobilised by the slide I3 at th bottom of the path in the blind groove I4b (Fig. 2), cannot move forward; percussion is therefore impossible.
  • the slide I3 acts as a bolt in the zig-zag groove 54 under the thrust of the spring I, and thus these three members resist any substantial displacement of the cap-carrying inertia block 5, which immediately returns to bear against the slide I3 at the bottom of th blind groove, at I6.
  • the inertia block 5 On the firing of the shot, the inertia block 5, through inertia under the propulsive action, compresses the spring I and moves backwards to bear against a circular flange 21 on the fuse body I, taking up the position shown in Fig. 3, while the slide I3, running along the blind branch Nb of the groove I5, takes up its position at the point ll of the V (Fig. l), where it is engaged in the long branch I 4a, in the intermediate or pre-arming position. From that moment it can no longer re-enter the side branch Mb that it has just left.
  • the inertia block 5 Before reaching the front extremity of the cylindrical cavity 9, the inertia block 5 releases the ball [-8, which escapes to the interior (Fig. 5), and then the slide l3, which emerges through the open end [5 of the groove 14a.
  • the outer inertia block 10, being released, isin turn carried along axially by the inner inertia block 5 as soon as the latter strikes against a rim 28 on the inertia block H), causing the cap 5 to project forwards through the latter.
  • Figs. 8 to 10 illustrate a shell fuze capable of ensuring at the same time complete safety during storage and on firing, including prevention of any rebound, with displacement of the detonator cap which passes from an inactive safety position relative to the explosive charge of the projectile to an active position, in which the explosive transmission can normally be produced on impact.
  • a fuze body I bored from end to end with a single diameter, carries slides l3 serving as stop and control fingers and disposed in such a manner asv to be able to slide in the corresponding grooves M provided, in accordance with the invention, in an inertia block 5 placed at any desired distance inside the body I.
  • Each groove M (Fig. 9) comprises two branches Ma and Mb disposed in the shape of a V, which provide a zig-zag path for the appertaining slide.
  • a spring 1 applies at one end a pressure against the inertia block 5, which keeps it bearing against the slides 13 at the bottom of the blind grooves Mb, and, at the other, keeps'the. detonator 4, mounted on a second inertia block [0, bearing against the rear end 29 of the fuze body I.
  • a spring 38 decidedly weaker than the spring I, remains compressed in the waiting position between the lower surface 3! of the inertia block In and the bottom 29 of the fuze body.
  • said inertia block 5 On the firing of the shot, said inertia block 5, under the influence of the propulsive effect and through inertia, causes the spring 1 to yield, travels backwards in a reciprocating rotary movement imposed on it by the branches Mb of the grooves, and the slides l3 move to the point of the V, at N (Fig. 9)
  • the device forming the subject of the invention can also be utilised in such manner as to operate a pyrotechnical or mechanical time fuze, as illustrated in Fig. 11.
  • the fuze body I bored throughout it length, is provided with a detonator-carrying head 2 carrying a cap 5 and a detonator 4.
  • a slide l3, integral with the body I is engaged in thesafety position in the blind branch Mb of a V-shaped zig-zag groove M disposed on a striker-carrying inertia block 5 which a spring 1, bearing on the base 29 of said body, holds against the slide i3 at the bottom of the blind groove Mb.
  • the strikercarrying inertia block 5 is held in the safety position, as hereinabove described, by the combined action of the'slide I3, the groove M, and the spring 1.
  • the striker-carrying inertia block 5 under the influence of the propulsive effect and following the movements imposed on it by the zig-zag groove Mb, compresses the spring "I until the slide 13 reaches the end of the blind groove, where it forks into the long groove Ma.
  • the spring I returns the inertia block forwards; it then follows the movements imposed on it by the long branch Ma of the groove, and then, when the slide l3 reaches the outlet l5 of the latter, it is released and is thrown by the spring 1 towards the cap 6, in which its point penetrates and gives rise to the firing.
  • Fig. 12 shows that the blind branch Mb of the groove may, like the long branch Ma, have several successive zig-zags, the effect of which is to increase the delay and not to permit the slide [3 to assume the pre-arming position I! except under a longer thrust effect.
  • Figs. 13 and 14 relate to a device combined in such a manner as to obtain an inertia fuze with delayed arming, for projectiles preferably propelled by self-propulsion.
  • the fuze comprises a body I in which are housed a grooved inertia block 5 provided with a striker 3, a cap-carrying inertia block l0 provided with a cap 6 and a detonators, and a spring 7 bearing at one end on the striker-carrying inertia block and, at the other end, on the capcarrying inertia block.
  • the sring -1 tends to keep the two inertia blocks apart from one another.
  • the total path available to the cap-carrying inertia block [0 as far as a stop 32 provided on the fuze body does not enable the cap to touch the striker point.
  • the blind branch Mb of the groove 14 is reduced to a blind cavity I6 adapted to receive the slide l3 at the end of the path, said slide being located at the entrance l5 of the long branch Ma (Fig. 14) as long as it is in the safety position.
  • the spring 1 returns the inertia block 5 in the opposite direction; the slide 13, taking up position in.
  • the cavity 16 which forms a stop thus keeps the striker 3 held in such manner that, on impact, the point 3 will penetrate the cap 6 when the cap-carrying inertia block Iii meets it.
  • the device of the invention may also be utilized to release, with delay, an obturator designed to prevent premature transmission of firing (Fig. .15).
  • an inertia block 5 forms an obturation bell and carries a slide [3 in the form of a stop and control finger.
  • the bell inertia block 5 fits over and caps a projection forming a support 33, which constitutes the coacting member and carries the zig-zag groove [4 (Fig. 16),,and has the central aperture 33a through which fire can pass to the detonator.
  • An ejection spring 1 in this aperture holds the bell inertia block 5 against the slide 13 at the bottom of the blind groove Mb of the support 33.
  • the bell prevents the transmission of firing or of the explosive wave from the cap of a fuze located in the front or nose end of the projectile.
  • the bell inertia block 5 On the firing of the shot, the bell inertia block 5, under the influence of the propulsive effect and through inertia, follows the movements imposed on it by the blind groove Mb, compressing the spring 1 until the end of the path of the slide I 3 in said groove, said slide then taking up position at IT.
  • the spring I returns the obturation bell 5 to the front; said bell then follows the movements imposed on it by the zig-zags of the long branch Ma of the groove in which the slide I 3 runs, and then, when the latter reaches the outlet l5 of said groove, the bell is ejected by the spring 7, thus freeing the fire passage orifice. Transmission of firing may take place from that moment on.
  • Fig. 15 The specific structure shown in Fig. 15 has the body I formed with a cylindrical inner wall spaced from the projection or support 33 to provide an annular cavity in which is closely received the cylindrical skirt 5b of the obturator bell.
  • the externally conical closed forward end 5a of the bell is thicker than the lateral skirt Wall 5b.
  • the illustrated arrangement has the technical advantage of increasing the safety factor of the mechanical delay device. Thus, if premature fire from a nose primer of a fuze 37 (Fig.
  • the general disposition is the same as in the case of Fig. 15, but it comprises two grooves disposed in such manner that the ejection of the bell inertia block 5 is instantaneous when theslide i 3 is caused to leave its intermediate position.
  • This result is obtained by giving the long branch of Na of the groove a rectilinear shape
  • the slide is designed in the form of a ball is imprisoned in a recess .34 in the bell inertia block 5, which gives it greater flexibility in operation.
  • the grooves may also be disposedin the manner illustrated in Fig. 22, so that the safety position l6 of the slide l3 and its intermediate or pre-arming position I! are in the same longitudinal axis X--X. While ensuring in perfect fashion the passage of the slide l3 from the groove Mb into the groove Ma, this enables all lateral tension of the return spring 7 to be avoided in the event of that occurring in consequence of the oblique position of the groove.
  • Fig. 22a shows how the obturator device described in connection with Fig. 15 may be employed in'a projectile 4
  • the primer cap in an impact fuze 3! at the nose of the projectile is to be fired on impact, transmitting. its fire or explosive wave rearward through this cavity along the axis of the projectile: but so long as the obturator bell 5 is in safety position, the detonator 38 is not energized.
  • the device is safe against explosion of the charge 39, 40 prior to the normal propulsion of the projectile.
  • the obturator hell 5 moves rearward from its safety position, with its slide I3 passing from the 'full line position to the dotted line position of in Fig. 2%., thereby uncovering the aperture through the 'projectioufit (Fig; '15) and permitting the fire from theprime r cap of fuse .37
  • the device forming the subject of the invention also renders it possible to provide, for projectiles discharged by guns or by self-propulsion, a very simple fuze the arming of which takes place on impact, operation by delayed percussion taking place only after braking or stoppage of the projectile in the ground or any other objective.
  • Figs. 23 to 2'7 relate to such a device.
  • a capcarrying fuze body I of great strength carries the slide or slides l3, the groove or grooves l4 being placed on a striker-carrying inertia block 5; a spring 1 holds said inertia block, in the safety position, against the slide l3 at the bottom of the blind groove Mb (Figs. 23 and 24).
  • a supplementary stop, for example consisting of balls 35, may if desired be provided (Fig. 2'7) if firing is to take place with very great accelerations on discharge of the shot.
  • the spring I returns the inertia block 5 to the rear, the zig-zag groove Ma first imposing on it a slow movement after which, when the slide I3 leaves said groove, the spring 1 throws the strikercarrying inertia block 5 against the cap 6, which fires.
  • a mechanical safety delay device for a projectile fuze having a body with an aperture through which fire is to be transmitted as an incident of detonation comprising two main co-acting parts, one of which parts is an ejectable obturator and the other part is a body projection having said aperture extending therethrough, said obturator part having the shape of a bell and being located when in safety position around said projection and covering the aperture and thereby preventing the transmission of fire, one of said main co-acting parts having at least one groove formed by two converging branches, the other of said co-acting parts having a sliding member adapted to run in said groove, one branch of said groove having a blind end for receiving the sliding member when in safety position and preventing forward movement of the said obturator part, said one branch having a zig-zag shape for co-acting with the sliding member during positive acceleration of the projectile and thereby effecting a slowing down of theinertial relative rearward movement of the obturator part by rotary oscillating
  • a mechanical safety delay device for a projectile fuze having a body with an aperture through which fire is to be transmitted as an incident of detonation comprising two main co acting parts, one of which parts is an ejectable obturator and the other part is a body projection having said aperture extended therethrough, said obturator part having the shape of a bell with the forward end thereof being a head of external conical shape and having greater thickness than the lateral wall portion of said bell, the bell being located when in safety position around said projection and covering the aperture and thereby preventing the transmission of fire, one of said main co-acting parts having at least one groove formed by two converging branches, the other of said co-acting parts having a sliding member adapted to run in said groove, one branch of said groove having a blind end for receiving the sliding member when in safety position and preventing forward movement of the said obturator part, said one branch having a zig-zag shape for co-acting with the sliding member during positive acceleration of the projectile and thereby effecting
  • a mechanical safety delay device for a projectile fuze having a body with an-aperture through which fire is to be transmitted as an incident of detonation comprising two main co-acting parts, one of which parts is an ejectable obturator and the other part comprises a body projection having said aperture extended therethrough and a peripheral cylindrical wall spaced from and concentric with said projection, said obturator part having the shape of a bell with a cylindrical skirt closely fitting and movable in the space between said projection and said wall, said bell when in safety position covering the aperture in said projection and thereby preventing the transmission of fire through said aperture, one of the said main co-acting parts having at least one groove formed by two converging branches, the other of said co-acting parts having a sliding member adapted to run in "said groove, one branch of said groove having a blind end for receiv'ingthe sliding member when down of the inertial relative rearward movement of the obturator part by rotary oscillating movements imparted thereto, the

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Emergency Lowering Means (AREA)
  • Air Bags (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US760425A 1946-11-02 1947-07-11 Fuse Expired - Lifetime US2595757A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH620875X 1946-11-02
CH711928X 1951-04-24

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US2595757A true US2595757A (en) 1952-05-06

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US760425A Expired - Lifetime US2595757A (en) 1946-11-02 1947-07-11 Fuse
US283600A Expired - Lifetime US2778310A (en) 1946-11-02 1952-04-22 Safety device for projectiles

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US283600A Expired - Lifetime US2778310A (en) 1946-11-02 1952-04-22 Safety device for projectiles

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US (2) US2595757A (fr)
BE (2) BE475670A (fr)
CH (3) CH268198A (fr)
DE (3) DE850418C (fr)
FR (1) FR954538A (fr)
GB (2) GB620875A (fr)
LU (1) LU31364A1 (fr)
NL (2) NL69639C (fr)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778310A (en) * 1946-11-02 1957-01-22 Energa Safety device for projectiles
US2845866A (en) * 1953-12-24 1958-08-05 Brandt Soc Nouv Ets Fuse for a projectile and applications thereof
US2850979A (en) * 1954-04-19 1958-09-09 Magnavox Co Time delay control means
US2856855A (en) * 1955-10-13 1958-10-21 Samuel D Horowitz Retainer assembly for a fuze
US2872868A (en) * 1955-07-11 1959-02-10 Jr William J Donahue Missile nose fuze
US2925778A (en) * 1957-03-15 1960-02-23 Stewart Warner Corp Helix type delay detent
US2926609A (en) * 1958-05-28 1960-03-01 Henry R Van Goey Gas operated safety and arming mechanism
US2934019A (en) * 1956-02-02 1960-04-26 Charles R Olsen Fuze assembly
US3018734A (en) * 1955-11-30 1962-01-30 Maguavox Company Delay firing mechanism
US3289588A (en) * 1954-03-16 1966-12-06 Aaron L Hitchens Caliber 50 spotting bullets
US3451340A (en) * 1966-07-28 1969-06-24 Tamerlan Anstalt Percussion fuze including rotary delay provisions
US3760734A (en) * 1972-04-28 1973-09-25 Us Army Delayed arming device
US3960087A (en) * 1974-10-04 1976-06-01 The United States Of America As Represented By The Secretary Of The Navy Smoke and illumination signal
US4047485A (en) * 1975-12-24 1977-09-13 Motorola, Inc. Compact electrical fuze
US4212245A (en) * 1977-12-02 1980-07-15 Sarmac S.A. Bottom fuse
US4320706A (en) * 1978-12-22 1982-03-23 Sarmac S.A. Percussion head fuse for an explosive projectile
US4557198A (en) * 1982-03-04 1985-12-10 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Safety devices for carrier shells
US4716830A (en) * 1985-07-29 1988-01-05 Morton Thiokol, Inc. Inertia safety and arming device
US4815381A (en) * 1988-05-20 1989-03-28 Morton Thiokol, Inc. Multiple pulse inertial arm/disarm switch
US4991510A (en) * 1988-08-16 1991-02-12 Nico-Pyrotechnik Hanns-Jurgen Diederichs Impact fuse having fore-bore safety
US20050081732A1 (en) * 2003-06-30 2005-04-21 Marc Worthington Safety and arming apparatus and method for a munition
US20080245257A1 (en) * 2007-04-05 2008-10-09 Junghans Microtec Gmbh Projectile with a Penetration Capability
US9689649B1 (en) * 2014-08-20 2017-06-27 The United States Of America As Represented By The Secretary Of The Army Obturator for 105MM projectile

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2712284A (en) * 1951-06-19 1955-07-05 Haroid E Thomas Delayed arming safety fuse
DE1206977B (de) * 1958-05-21 1965-12-16 Gen Electric Elektrischer Hochspannungsleiter
BE629210A (fr) * 1962-03-08
DE3426847C1 (de) * 1984-07-21 1992-04-09 Diehl Gmbh & Co Projektilbildende Sprengladungseinlage
DE10111714C1 (de) * 2001-03-12 2002-10-10 Nico Pyrotechnik Zünder für ein aus einem Rohr mit Drall abzuschießendes Geschoss

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US1053857A (en) * 1912-04-09 1913-02-18 Boforsgullspang Ab Shell-fuse with safety device.
DE359102C (de) * 1920-11-12 1922-09-19 Hermann Schirrmacher Sicherung fuer den Schlagbolzen
FR695190A (fr) * 1929-08-21 1930-12-12 Fusée percutante à armement différé
US1792631A (en) * 1929-01-09 1931-02-17 Stephen D Deevy Fuse for projectiles
GB489020A (en) * 1936-09-11 1938-07-18 Marc Birkigt Improvements in and relating to percussion fuses for projectiles

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GB126684A (en) * 1917-02-10 1919-05-22 Rudge Whitworth Ltd Improvements in or relating to Percussion Fuzes for Projectiles.
FR513998A (fr) * 1919-10-08 1921-02-28 Schneider & Cie Dispositif de mise de feu à double amorcage pour projectiles de gros calibre
FR611707A (fr) * 1926-02-25 1926-10-09 Sécurité pour fusées
FR830370A (fr) * 1936-12-04 1938-07-28 Fusée ultrasensible à armement retardé et à fonctionnement réglable
US2360043A (en) * 1939-08-05 1944-10-10 Prato Cesare Del Percussion cap safety device for percussion fuses
BE439558A (fr) * 1939-08-05
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GB190518185A (en) * 1905-09-08 1906-05-03 King S Norton Metal Company Lt Improvements in Fuzes for Lyddite Shells and other Explosive Projectiles.
US1053857A (en) * 1912-04-09 1913-02-18 Boforsgullspang Ab Shell-fuse with safety device.
DE359102C (de) * 1920-11-12 1922-09-19 Hermann Schirrmacher Sicherung fuer den Schlagbolzen
US1792631A (en) * 1929-01-09 1931-02-17 Stephen D Deevy Fuse for projectiles
FR695190A (fr) * 1929-08-21 1930-12-12 Fusée percutante à armement différé
GB489020A (en) * 1936-09-11 1938-07-18 Marc Birkigt Improvements in and relating to percussion fuses for projectiles

Cited By (25)

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US2778310A (en) * 1946-11-02 1957-01-22 Energa Safety device for projectiles
US2845866A (en) * 1953-12-24 1958-08-05 Brandt Soc Nouv Ets Fuse for a projectile and applications thereof
US3289588A (en) * 1954-03-16 1966-12-06 Aaron L Hitchens Caliber 50 spotting bullets
US2850979A (en) * 1954-04-19 1958-09-09 Magnavox Co Time delay control means
US2872868A (en) * 1955-07-11 1959-02-10 Jr William J Donahue Missile nose fuze
US2856855A (en) * 1955-10-13 1958-10-21 Samuel D Horowitz Retainer assembly for a fuze
US3018734A (en) * 1955-11-30 1962-01-30 Maguavox Company Delay firing mechanism
US2934019A (en) * 1956-02-02 1960-04-26 Charles R Olsen Fuze assembly
US2925778A (en) * 1957-03-15 1960-02-23 Stewart Warner Corp Helix type delay detent
US2926609A (en) * 1958-05-28 1960-03-01 Henry R Van Goey Gas operated safety and arming mechanism
US3451340A (en) * 1966-07-28 1969-06-24 Tamerlan Anstalt Percussion fuze including rotary delay provisions
US3760734A (en) * 1972-04-28 1973-09-25 Us Army Delayed arming device
US3960087A (en) * 1974-10-04 1976-06-01 The United States Of America As Represented By The Secretary Of The Navy Smoke and illumination signal
US4047485A (en) * 1975-12-24 1977-09-13 Motorola, Inc. Compact electrical fuze
US4212245A (en) * 1977-12-02 1980-07-15 Sarmac S.A. Bottom fuse
US4320706A (en) * 1978-12-22 1982-03-23 Sarmac S.A. Percussion head fuse for an explosive projectile
US4557198A (en) * 1982-03-04 1985-12-10 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Safety devices for carrier shells
US4716830A (en) * 1985-07-29 1988-01-05 Morton Thiokol, Inc. Inertia safety and arming device
US4815381A (en) * 1988-05-20 1989-03-28 Morton Thiokol, Inc. Multiple pulse inertial arm/disarm switch
US4991510A (en) * 1988-08-16 1991-02-12 Nico-Pyrotechnik Hanns-Jurgen Diederichs Impact fuse having fore-bore safety
US20050081732A1 (en) * 2003-06-30 2005-04-21 Marc Worthington Safety and arming apparatus and method for a munition
US7258068B2 (en) 2003-06-30 2007-08-21 Kdi Precision Products, Inc. Safety and arming apparatus and method for a munition
US20080245257A1 (en) * 2007-04-05 2008-10-09 Junghans Microtec Gmbh Projectile with a Penetration Capability
US7685941B2 (en) * 2007-04-05 2010-03-30 Junghans Microtec Gmbh Projectile with a penetration capability
US9689649B1 (en) * 2014-08-20 2017-06-27 The United States Of America As Represented By The Secretary Of The Army Obturator for 105MM projectile

Also Published As

Publication number Publication date
FR954538A (fr) 1950-01-03
CH264011A (fr) 1949-09-30
NL69639C (fr)
DE892871C (de) 1953-10-12
DE850418C (de) 1952-09-25
CH289732A (fr) 1953-03-31
BE510153A (fr)
LU31364A1 (fr)
BE475670A (fr)
GB620875A (en) 1949-03-31
DE877573C (de) 1953-04-09
NL82408C (fr)
GB711928A (en) 1954-07-14
US2778310A (en) 1957-01-22
CH268198A (fr) 1950-05-15

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