US1640165A - Clockwork-operated mechanical fuse for shells and the like projectiles - Google Patents

Clockwork-operated mechanical fuse for shells and the like projectiles Download PDF

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Publication number
US1640165A
US1640165A US712960A US71296024A US1640165A US 1640165 A US1640165 A US 1640165A US 712960 A US712960 A US 712960A US 71296024 A US71296024 A US 71296024A US 1640165 A US1640165 A US 1640165A
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United States
Prior art keywords
fuse
striker
shaft
spring
clockwork
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Expired - Lifetime
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US712960A
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English (en)
Inventor
Varaud Andre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tavannes Watch Co SA
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Tavannes Watch Co SA
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Filing date
Publication date
Priority to DET30428D priority Critical patent/DE443843C/de
Application filed by Tavannes Watch Co SA filed Critical Tavannes Watch Co SA
Priority to GB10256/25A priority patent/GB232636A/en
Priority to GB1782/25A priority patent/GB227871A/en
Priority to US39237A priority patent/US1642520A/en
Priority to US39699A priority patent/US1586342A/en
Application granted granted Critical
Publication of US1640165A publication Critical patent/US1640165A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/02—Fuze bodies; Fuze housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C9/00—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
    • F42C9/02—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means
    • F42C9/04—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means by spring motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C9/00—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
    • F42C9/02—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means
    • F42C9/04—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means by spring motor
    • F42C9/041—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means by spring motor the clockwork activating a security device, e.g. for unlocking the firing-pin
    • F42C9/045—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means by spring motor the clockwork activating a security device, e.g. for unlocking the firing-pin and the firing-pin being activated by a spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C9/00—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
    • F42C9/02—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means
    • F42C9/04—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means by spring motor
    • F42C9/048—Unlocking of clockwork mechanisms, e.g. by inertia or centrifugal forces; Means for disconnecting the clockwork mechanism from the setting mechanism

Definitions

  • This invention concerns improvements in or relating to clockwork operated fuses for proj ect'iles of the type in which the release of a striker deviceis controlled by a. rotary member whose angularposition can be set or adjusted before firing and whichis driven by the clockwork in a direction opposite to its direction of setting movement while the projectile is in flight.
  • the drivingmember of the clockwork movement. ⁇ which may either be the barrel shaft or the going barrel, can describe but a single revolutionVV around itself for determ'ning the maximum duration of the op-eration of the clockwork movement.
  • This fact necessitates the use of a gear train at a very great multiplication for transmitting the driving power of said member to the last movable part of the gear train or the escapement wheel which as is known must rotate at the speed which will suffice for entertaining the oscillations of the regulator of the clockwork movement.
  • F ig. 1 is a lateral elevation of the firstconstructional form partly in section on the line 1 1 of Figr.
  • Fig. 2 is an axial section of thek second constructional form adapted to lit the ogival counterpirt of ashell showing in elevation the detonator arrangement and the housing enclosing the clock movement which is the same in both constructions, which latter do not differ except in certain detailsof the body of the fuse and of the detonator arrangement.
  • Fig. 3 is an axial section of the housing showing, the different parts of the clockwork movement in elevational view.
  • Fig. t is an axial section of the clockwork movement and of its casing taken on the line 4 of Fig. 10.
  • Fig. 5 is a plan view on the lower part of the first form of construction of the body of the fuse, the clockwork movement and the housing' being omitted.
  • F igs'.v 6 9 are detail views showing separately in axial section, the first form of the detonator arrangement respectively during the manipulation of the shell7 at the moment of firing, at the moment of explosion when the shell explodes. in the air and on the im-.
  • Fig. ⁇ 10 is a plan View of the clockwork Y movement taken above the forward or top plate thereof.
  • Figs. 11 to 13 are transverse sections taken respectively below each of the three plates.
  • Fig. 14 is a transverse section taken on the line lil- 14k of Fig. 4L.
  • Figs. 15 and 16 aie'similar transverse sections taken on the line 15-15 of F ig. l showing the driving spring respectively in its wound and unwound position.
  • Figs. 17 to19 are transverse sections taken respectively on the lines 17-17, 1818 and 19-19 of Fig. 4.
  • i j Fig. 20 is a section analogous to Fig. 19 showing the striker abandoned to the action of the percussion spring.
  • Figs'. 21 and A29. are detail views showing separately a safety member in operative and inoperative position, respectively, and
  • Figs. 23 and 24C are likewise detail views showing separately the housing in elevation-' al interior -viewvof one of its halves, and anaxial section taken perpendicularly to the plan of the junction vof its two halves.
  • a key 3 which is prevented from being axially displaced by a radial screw l adapted to co-operate with circular groove in the periphery of the key.
  • rlChis key carries at its other extremity or engaging end a pinion 5 cut directly from its stem, and the function of which will be described later on.
  • the detonator arrangement of the fuse is lodged in a cylindrical cavity 6 provided axially in the lower portion 1. It comprises (Figs.
  • asafety member 11 constituted by a split ring which normally has av diameter valittle larger than thev groove but which possesses suflicient elasticity to enable it to enter this groove under the action of yinertia on the departure of the projectile; capv 12 screwed axially into the central nipple of the socket 8 and a percussionl pin 13 lodged ⁇ in a tubular guide 14.
  • This pin is subjected to the action of a percussion spring 15 bearing on the one hand on the bottom of the casing containing the clock move ment and on the other against a collar fori'ned near the head of the percussion pin and terminating in the lpercrssion or striking pointk proper 16.
  • This percussion pin is provided, moveover, near its upper end with a lateral notch 17 (Figs. t, 8, 19Vand 20), the object of whichy willlat-er on be fully eX- plained. j
  • a cavity 18 Arranged inthe axis of the portion 1 of the body of thefuse co-axially with the cavity 6 containing the detonator, is a cavity 18 (Figs. 1 and 5) likewise cylindrical, but of much larger diameter than the cavity 6 and in which is mounted a housing 2O (Fig. 1) containing the clockwork'nlove Vment.
  • This cavity 18 has ⁇ ,longitudinal grooves 19 in diametrical opposition which cooperate with longitudinal projections or ribs 21 on the periphery of the casing.
  • the casing is built up of twosemi-cylindrical sections rigidly connected between them on the one hand by means of slotand tenon joints, rendering themA integral with three plates 22, 23 and 21, arranged in super-posi" tion F igs. 3 and el, between and above-which are arranged different parts of the clock@ work movement, and on the other hand by means of Vdiametrically opposite screws 3.4
  • the plates 22, 23 and 24 have a diameter slightly greater than the interior of the housing 2O and engage in correspending circular grooves 25 in the walls of the latter.
  • These-plates are each like- Wise provided with two tenons diametrically opposite and engaging with grooves 26 (Fig. 23) provided in the projections 21 of the housing 20.
  • rlhe spring of the clock-work mover ent is accommodated in a tenoned casing 27 which is adjusted in the interior of the housing between the lower plate '24' and a strengthening steel plate 28 rest-ing von a washer 29 which is likewise provided with tenons and constitutes the bottom of the housii jas shown in Figs. 3 and d.
  • the tenons of the casing 27 and of the plate 28 and washer 29 are diametrically opposite and are superposed in such a manner as to y27 and the plate 28, and washer 29 are assembled between them by means of two steel pins 36 (Figs. 17 to 20).
  • the motor spring 37 for the clockwork (Figs. e, 15 and y16) is lodged in a cylindrivcal cavity 38 within the casing 27. Its outer end is fixed to a strap 39 pivoted toits casing 27 in a manner'to take cover inside a notch l0 in the wall 38 whenA the spring is expanded as shown in Fig. 16. lts inner end is fixed to a collar l1 mounted on a square part 0f a central shaft l2A disposed axially in the housing.
  • This shaft serves, on the one hand, for winding the spring 37 with the aid of a winding mechanism which will hereinafter be described, and on thel other ⁇ hand kfor transmitting the driving power on the one hand with the aid of a pinion 46 to the parts.
  • the clockwork mechanism 'controlling the function of the striking pin of the fuse,and, on the other llO hand, with the aid 'of a ratchet 79 to the clockwork regulating device ot which the ditte-rent gear wheels are distributed kbetween the. plates 22, 23 and 24.
  • the shaft 42V by'means orn its lower extremity is supthe latter to bear the effort ojt tlexure due to the inertia to which it is subjected at the moment of Vthe departure otthe projectile to whichthe fuse is applied.
  • the shaft Llf2 carries at its upper end a pinion elthe function oi which will be described later on, and at its other extremity a pinion 46 which meshes with a toothed wheel' i7 keyed on to oneend of a regulator stub sha'tt 48 journalled on the one'hand in the bottom ot the casing 27,Y and on the other hand in the bottom washer 29.
  • This shaft S which serve: mission of the mot-ive torce to the retaining device of the strilter, and for insulating this device betere firing, carries at its other end a.
  • pinion 49 which is in constant mesh with the inner teeth ot' a crown piece 50 which rotates'treely in an annular groove 5l provided in the bottom washer 29.
  • lin the wall otl the cavity 51 for the crown piece 50 are arranged at i200, one to the other, three notches'52 in which operate three balls 53 (FigjlS), ln openings ot' the steel plate 28 are lodged three other balls 54 (Fig. el) on which rolls the upper face ot the crown piece 50, while the periphery otithis crown rotates on the balls ln the flange ot' the crown piece which projects parallel to the axis ot the tuse is a notch 55 (Figs. il, 19V and 20) in which engages the nose ot a retaining lever 5G at the moment the striker is liberated.
  • rlChis lever 56 isY pivoted about a screw 57 which is screwed-into the bottom washer 29, and car-v ries a. vertical pin 5S against the tree end ot which operates a spring 59 lodged in the bottom of the casing 217 (Fig. ll).
  • This spring 59 tends normally to maintain the lever 56 in Contact with a boss G1 which is integrally feathered to a socket which is automatically7 retracted under the action ot momentum et inertia en the departure ot' the projectile, and tends to cause the nose of the lever 53 to penetrate in Vthe notch 55l when 'the boss 61 is retracted and the notch 55 is in register with the said nose.
  • The' boss. 6l and sleeve operate in a guide 62 which 1's secured beneath the vbottom washer 29m a cylindrical cavity 62 provided in the bottom of the cavity 18 (rig. 5).
  • thecrown piece 50 is provided with an internal radial lug ⁇ GO (Fig. 19) which comes to bear against a flattened portion of the boss 61 as long as the latter isl in its operative position and when the crown piece 50 has not been operated to eti'ectthe regulation of the fuse.
  • the shaft 66 is prolonged by a reduced thread portion 67 screwed on which is a nut 68 having a collar which serves as supporting' surface for a spring 69 by unelutching the sliding piniontlll from the pinion 5 when this pinion is Jtreed by the fork 70 of a lever 71 10) ⁇ pivotally mounted on a screw 72 screwed into the top plate 22.
  • the lever 71 carries a nipple 73 which plays in a circular slot 74 provided in the top plate 22 andthe function ot which will be described later on.
  • the lever 71 is maintained in its operative position as shown in Fini. 10 lup to the moment of the departure oit the projectile by a projection 7 5 acting through the inertia in a manner analogous to that of the boss 61 yof the retaining device of the striker. This projection.
  • the driving shaft 42 commences to rotate'in counterclockwise direction under the action of the force stored up in the power spring, all of the rotating members of the winding mechanism and of the regulating ⁇ device of the fuse describe in an inverse sense the same course which they have accomplished during the action of rewinding with the exception, however, of the key, of which the pinion 5 is then uncoupled from the sliding pinion 64 which is then found to be in a retracted position, as represented in Fig. 4 in dotted lines.
  • the crown 50 thus returns to itsinitial position which it occupied before the rewinding of the fuse and which is its position at the outset, but when at this moment the ⁇ Yto say, for effecting the instantaneous release of the said striker.
  • This ratchet 7 9 rests on the top cover of the casing 27 and carries a'crown wheel 31. Cut in this crown wheel is a ratchet rim S2 adapted to engage with the teeth SO on the ratchet wheel.
  • This crown'wheel 81 performs the function of a pawl and is normally maintained in position on the ratchet 79 so that the teeth 8O and 82 are held in engagement by means of a ring 84 screwed to the periphery of the ratchet with the aid of screws
  • This ring has its upper side provided with claws forming springs 85, the. free extremities of which bear on the top of the crown pawl '81.
  • a circular groove 87 cut in the housing 20 opposite the ratchet wheel 79 for the free passage of the screws 86.
  • the ratchet wheel 79 rotates with the shaft 42 in clockwise direction without causing the rotation of the pawl member 31 due to the ratchet arrangement of the teeth 8O and 82 and because the pawl .member 81 can then axially displace itself in opposition to the action of the spring to allow the teeth 82 to pass. During this time the pawl member 31 is held stationary in the revoluble sense by means which will be described later on.
  • AThis shaft 89 rotates in a circular opening 91 provided in the plate 24 and carries on its parts above this plate a toothed wheel 92 adapted to actuate a multiplying gear train 93 (Fim 12) situated between the plates 23 and 24.
  • Thev last pinion 94 of this gear train is keyed on a shaft4 95 of an escapement-wheel 96 which cooperates with a swivelling member 97 mounted on the shaft 98 of the regulator.
  • This shaft 93 is placed. axially in the fuse between the key 3 and the driving shaft 42.
  • This governor which is located between the plates 22 and 23 is constituted Yby a hub 103 carrying three wings 10Ldisposed at Each of these wings carries at its free extremity a weight 105.
  • This governor 103, 104 remainsl stationary to the momentyof the departure of the projectile, due to the fact that one of the wings 104 is prevented from rotating in clockwise direc tion by the nipple 73 carried by the centrifuga-l. lever 71.
  • Fig. 1 shows a dial 106 having indications 1 in multiple of twos from 2-16 and servesV as indicator ofthe lfiring time to which the fuse has been set.
  • A*The device is rendered inte gral with thel key 3 Vby. any appropriate means, not ⁇ shown, so as to be displaced in portionate with the rotation of the key dur- Aingfwhich the winding and regulation of the fuse is effected.
  • the lever 71 in being displaced under the .action lof the centrifugal force moves the pin 73 to the outerfextremity of the slot 74, that is to say, to a position where this pin admits of the free oscillation of the governor 103 and 104;..
  • the lever71 liberates by its fork 70 the sliding pinion 642 which under the action of the uncoupling springs 69 assumes the position indicated in broken lines in Fig 1.
  • the key 3 is thus uncoupled from the winding mechanism of the fuse and consequently is not partaking of the movement of this mechanism during the working of the clockwork.
  • V' will turn in the inverse sense through an tangle' which the have traversed'durind the h C Winding 'and simultaneous setting of the fuse, Aplus a certain angle determined by the travel to be yet traversed by thecrown memof the lever 56, the latter is thrown vby'V the action of the spring V59 and thecentrifugal force in ycounter-clockwise Vdirection about its pivot 97, thus incidentally abancloning the striker to the action on the percussion spring 15.
  • the vfunction of the percussion mechanism is as follows: On the def parture of the projectile, the split safety ring 11 is by the inertia forced intothe interior of the cavity 10 in the socket .Swhich carries the percussion cap (Fig. 7). Dur- -ing the whole flight or travel of the shell 6, this percussion cap remains remote from the point 16 of the striker due to itsown inertia. In the normal function the shell, which is then operating as an ordinary fuse,
  • the connector ring 11G is also i shown by means ofwhich the fuse is secured in the eye piece of the shell.
  • Vother safety means functioning either l'byinertia or by centrifugal (lll.
  • the regular mechanism instead of comprising an anchored escapement device such as shown and a governor actuated solely by the motive force could be constituted by an escapement device with a dead beatescapenient and a regulator withfa spiral cylindrical spring. Further the winding and the simultaneous regulation of the fuse with the aid of the key 3 could be effected directly by hand.
  • the point of the fuse should be constituted by Yan ogival cap integral with the key 3 which can be displaced angularly on the part 2 of the body of the fuse for actuating the key
  • this cap could have its lower edge provided with a graduation eo-o eratinowith a fixed index marked on the part 1 of the body of the fuse for indicating the precise angle to V,be described by the cap in its manipulation.
  • the percussion spring l5 instead of being mounted around the guide tube 1st of the striker could be lodged in an arial opening formed inthe power shaft l2 and in a circular correspondingcentral opening provided in the. steel washer 28. In this case, instead of acting on a collar near the point l5 of the striker, it would act against the upper face of the latter.
  • Vcould be made of three balls lodged inthree circular openings ⁇ arranged at 1200 ⁇ in the guide 14e and cio-operating with a circular l groove in the striker 19' retaining the latter ⁇ Vin the cocked position when these balls are immobilized in the guide 14 with the aid of ⁇ a gland arranged toslide on this guide and subjected to the action of a spring (which,
  • the grooves 2G provided in the housing, could be machined only to the depths of the circular groove 25 in which case the corresponding vprojections of the plates would obviously be smaller,y or these three grooves couldA be merged into a single one milled lon Qitudinallv in each half of the housing at the "external extremity Vofthe latter up to the height of thev lowest plate ,A 24 on a proportion of only the thickness of the housing.V
  • the two grooves 3() should Vlikewise only be milled on a portion ofthe thickness ofthe housing and for the sake of greater convenience in manufacture could Vbe prolonged to the lower edge of the housing.
  • Y Y 1.
  • a clockwork In a clockwork'operated fuse forar- 'multaneoud v tillery projectiles, a striker member, a revoluble member adjustable in one direction to an angular position prior to firing for controlling 'the striker member, a clockwork, Va regulating device therefor, a power spring.
  • a barrel shaft mounted in the axis of the fuse and adapted to turn several revolutions in one direction prior to firing for simultaneously winding the power spring and moving the said ievoluble member to position to regulate the time interval determining the io'nition of the charge of the project-ile and also adapted to be turned by the Aspriiig in the opposite direction during the flight of the projectile for then moving the revoluble member and alsol transmitting power to, the said regulating device of the clockwork,
  • a striker member In a clockwork operated fuse for artillery projectiles, a striker member, a crown wheel having internal teeth and revolubly adjustable in one direction to an angular position prior to tiring for controlling the striker member, a clockwork, a regulating device therefor, a power spring, and a barrel shaft mounted in the axis of the fuse and adapted to be turned several revolutions in one direction prior to'liring for siturning thesaid crown wheel to position to regulate the time interval determining the ignition of the charge of the projectile and also adapted to be turned by the spring in Athe opposite direction during the flight of vthe projectile for turning the said crown wheel andtransn'iitting driving power to the said'regulating device of the clockwork.
  • a striker member In a clockworkoperated fuse for artillery projectiles, a striker member, a crown wheel having internal teeth and Aadjustable in one direction to an angular position'before firing for controlling the striker niem- ⁇ ber ⁇ a clockwork escapement device, a power spring, a barrel shaft mounted in the axis ofthe fuse and adapted to be turned several revolutions in one direction prior to firing, a double reduction gear connecting the barrel shaft with the said crown wheel, and a multiplication gear connect-ing the said barrel through the double' reduction gear tocontrol th'e striker member and toactuatev the escapement device through the said multiplication gear.
  • a striker member In a clockwork operated fuse for artillery projectiles, a striker member a crown y wheel having internal teeth and being adjustable in one direction to an angular posiwinding the power spring and tion prior to firing' for controlling the striker member, a yclock-work escapement device, a power spring, a barrel shaft mounted in the anis of the fuse and adapted to be 4turned several revolutions in one direction prior 'to firing, a revolubly mounted key, means for connecting the key to the barrel shaft, a double reduction gearfconnecting the barrel shaft with the crown Wheel, and a multiplication ygear connecting the barrel vshaft with the escapement device whereby the said key maybe turned to turn the barrel shaft Va number of revolutions before iiring to simultaneously wind the power spring and tnrn Vthe crown wheel to a predetermined position and whereby during the flight of the projectile the barrel shaft is turned in the opposite direction by the vpower spring to turn the crown wheel through the double reduction gear to operate the striker
  • a clockwork operated fuse for artillery projectiles a striker member, a crown wheel having ⁇ internal teeth and adapted'to be adjustable in one ⁇ directionto an angulaiposition prior to firing for controlling the striker member, a clockwork escapement device, a power spring, a barrel shaft mounted in the aXis of the fus-e, a.
  • double reduction 'gear connecting the barrel shaft and the crown wheel, a revoluble key, meansfor connecting the key to the barrel shaft whereby when the key is turned the barrel shaft is turned thereby a predetermined number of revolutions ybefore firing to simultaneously wind the spring and to set the said crown wheel through the said double* reduction gear, a multiplicationQgear, and a device connecting ,the said multiplication gear to the said barrel shaft, which device is inj erative when the barrel shaft is turned by Vthe key and operative when during the flight lof the projectile the barrel shaft is turned in the opposite direction by the 4power spring to thereby actuate the escapeinent device vthrough the ni'ultiplication gear and also through the said double re-V duction gear and crown wheel tooperate the i striker member.
  • a striker member for controlling the striker L member a barrel shaft a aower serine a key for Yturning the vbarrel shaft in'one ,di rection l ior to firingrfor simultaneously winding tie power spring and Vsetting the revoluble member for controlling the striker member, a clockwork escapement device, a spindle therefor, a connection between the saidk spindle Aand barrel shaft, an ignitioncharge carrier', and a cartridge, the said key, ,spindle ,for the escapement device, the barrel shaft, the striker member, the ignition means 'operative upon Vfiring the projef a spring charge carrier and the cartridge being arranged aXially in the order named one behind the other from the nose of the fuse.
  • a projectile of the type described a clock work apparatus, a fuse device, a striker for operating the fuse device, a motor comprising a spring' and power shaft, a
  • a clock work apparatus a fuse device, a striker for operating the fuse device, a stop lever for normally maintaining the striker in an inoperative position, a device for normally maintainingr the stop lever in engagement with the striker and made operative by the firing of the projectile for releasing the stop lever, devices permitting the stop lever to become disengaged from the striker, a spring motor comprising a power shaft, and
  • a spring for driving the same a stem, a counter shaft, connections between the said stem and counter shaft and between the said counter shaft and power shaft, connections also between the power shaft and the devices for permitting the stop lever to be disengaged from the striker, whereby when the stem is turned in one direction a tension is applied to the spring of the motor and the said devices for permitting the stop lever to be disengaged from the striker are set, means whereby in turning the stem in said direction the clock work apparatus is not actuated, means operative upon the firing of the projectile for disconnecting the said stem and counter shaft, whereby the motor is released to simultaneously actuate the clock work apparatus and the devices for permitting the stop lever to be disengaged from the striker, and means indicating the period during which the clock work apparatus operates before the stop lever is released from the striker.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Toys (AREA)
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US712960A 1923-08-02 1924-05-13 Clockwork-operated mechanical fuse for shells and the like projectiles Expired - Lifetime US1640165A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DET30428D DE443843C (de) 1923-08-02 Mechanische Zuender fuer Artilleriegeschosse
GB10256/25A GB232636A (en) 1923-08-02 1924-05-13 Improvements in or relating to clockwork-operated fuses for shells and the like projectiles
GB1782/25A GB227871A (en) 1923-08-02 1924-05-13 Improvements in or relating to clock-work-operated fuses for shells and the like projectiles
US39237A US1642520A (en) 1923-08-02 1925-06-24 Mechanical fuse for artillery projectiles
US39699A US1586342A (en) 1923-08-02 1925-06-26 Clockwork-operated mechanical fuse for artillery projectiles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH219941X 1923-08-02

Publications (1)

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US1640165A true US1640165A (en) 1927-08-23

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US712960A Expired - Lifetime US1640165A (en) 1923-08-02 1924-05-13 Clockwork-operated mechanical fuse for shells and the like projectiles

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US (1) US1640165A (enrdf_load_stackoverflow)
CH (4) CH107891A (enrdf_load_stackoverflow)
DE (1) DE460557C (enrdf_load_stackoverflow)
FR (3) FR30486E (enrdf_load_stackoverflow)
GB (1) GB219941A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485949A (en) * 1945-07-18 1949-10-25 Us Sec War Delay action fuse
US2514499A (en) * 1946-03-22 1950-07-11 Us Sec War Delay action fuse
US2897760A (en) * 1943-04-02 1959-08-04 Lewis M Mott-Smith Safety device
US2911915A (en) * 1954-09-24 1959-11-10 Gibbs Mfg And Res Corp Time fuse
US3331325A (en) * 1965-09-07 1967-07-18 Frank H Ruhmann Mechanical time fuze for projectiles

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES293155Y (es) * 1986-03-24 1987-10-16 Esperanza Y Cia, S.A. Espoleta de retardo para granada de mortero.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2897760A (en) * 1943-04-02 1959-08-04 Lewis M Mott-Smith Safety device
US2485949A (en) * 1945-07-18 1949-10-25 Us Sec War Delay action fuse
US2514499A (en) * 1946-03-22 1950-07-11 Us Sec War Delay action fuse
US2911915A (en) * 1954-09-24 1959-11-10 Gibbs Mfg And Res Corp Time fuse
US3331325A (en) * 1965-09-07 1967-07-18 Frank H Ruhmann Mechanical time fuze for projectiles

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Publication number Publication date
CH107891A (fr) 1925-01-16
CH113938A (fr) 1926-05-17
CH107888A (fr) 1925-01-16
FR578972A (enrdf_load_stackoverflow) 1924-10-07
FR31517E (fr) 1927-03-16
GB219941A (en) 1925-08-06
DE460557C (de) 1928-06-07
CH107890A (fr) 1925-01-16
FR30486E (fr) 1926-07-17

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