US2664046A - Mechanical time fuse mechanism for projectiles - Google Patents

Mechanical time fuse mechanism for projectiles Download PDF

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Publication number
US2664046A
US2664046A US222343A US22234351A US2664046A US 2664046 A US2664046 A US 2664046A US 222343 A US222343 A US 222343A US 22234351 A US22234351 A US 22234351A US 2664046 A US2664046 A US 2664046A
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United States
Prior art keywords
bolt
striker
fuse
rotary member
centrifugal
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US222343A
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English (en)
Inventor
Hoenger Guido
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.)
Mefina SA
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Mefina SA
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Publication date
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Publication of US2664046A publication Critical patent/US2664046A/en
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    • 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

Definitions

  • This invention relates to projectile fuses and more particularly has reference to a mechanical time fuse mechanism and its controls.
  • the member controlling the release of the detonator pin comprises a bell-like member with a fiat base on one of the faces of which are formed a plurality of turns of an Archimedian spiral. This spiral engages a tooth or spur on a slotted bolt which undergoes displacement in radial direction when the bell-like member is turned.
  • the striker or detonator pin has its point extending into the slot and has a collar which bears against the side of the slotted bolt.
  • the spring for the striker or detonator pin urges the same strongly against the slotted bolt which due to friction retards its movement over the spiral of the bell-like member. This friction has a substantial influence on the proper operation of the mechanism.
  • the present invention has for its primary object to provide a mechanical time fuse mechanism, with or without instantaneous precussion, which is set by rotating the setting member through a plurality of turns, and in which the member controlling the release of the striker, driven in rotation by the clock-work movement from the time of firing, is displaced angularly upon setting through the same angle as the said movement.
  • This construction differs from the known construction by the simplicity of the member controlling the release of the striker or detonating pin, which comprises a guide in the form of a single turn of a spiral, this guide being normally in engagement with an intermediate oscillating bolt controlling the release of a striker bolt and cooperating with a centrifugal bolt for retaining the member which controls the release.
  • the guide in form of a spiral may extend through an angle of less than 360.
  • Fig. 1 is an elevational view partly in section of the mechanism
  • Fig. 2 is a sectional view taken on line II-II of Fig. 1 showing the position of different parts at rest, that is, in the starting position of setting;
  • Figs. 3 and 4 are similar sectional views showing the position of the parts respectively at the end of the three turns of setting, and after the release of the striker.
  • the member controlling the release of the striker 6 comprises a bell-shaped member 8 which can make three turns with respect to the frame plate 20, and has a guide rib 1 in the form of an Archimedian spiral with its beginning at la and its end at lb. This spiral rib extends through an angle less than 360 so as to leave a gap between its two ends.
  • An oscillating control bolt 9, referred to herein as an intermediate bolt has a portion 2 positioned to cooperate with the spiral guide 1.
  • Bolt 9 is pivoted at one of its ends about pivot I on the plate 20 and its aforesaid portion 2 extending transversely of the spiral guide I has three teeth 9a, each of a curvature substantially similar to that of the guide thread 1 and adapted to engage with the latter.
  • the teeth 9a are spaced from each other by a distance corresponding to the pitch of the spiral rib 1. They extend over the portion 2 of the bolt 9 through a length greater than the free space between the ends of the spiral rib 1, so that one of them can still be in engagement with the end 117 while the rest is already in engagement with the other end 1a of the guide rib I.
  • the end of the bolt portion 2 has a nose 9b of such dimensions that it can pass freely between the ends in and lb of the spiral rib 1.
  • the bolt 9 also has a nose 21 with a circular arcuate surface having the axis of the pivot l as its center of curvature.
  • the frame plate 20 also has mounted thereon a striker engaging bolt [8 pivoted at 3 and having a boss 18a on which bears the flange of the striker 6.
  • This bolt l8 also has a nose 22 cooperating with the nose 2! of the intermediate bolt 9.
  • the plate 293 also carries a bolt ll pivoted at 4 and designated as a centrifugal bolt. Its free end or point He engages a notch 80 in the bell-like member 8 in position of rest. It also has a projection 23 cooperating with the striker engaging bolt l8 and also with the nose 2
  • the three bolts 9, i1 and [8 are under the action of springs 9, H and I8 respectively.
  • the spring H of the centrifugal bolt ll tends to urge it inwardly towards the center while the springs 9, I8 of the intermediate bolt 9 and of the striker engaging bolt I8 respectively tend to urge them outwardly.
  • one of the parts A and B of the mechanism, Fig. 1, is rotated relatively to the other.
  • the projection 23 no longer prevents the striker bolt l8 from issuing at the instant it is released by the nose 2! of the bolt 9.
  • the release of the striker which causes the detonation is effected in the following manner with reference to Fig. 4:
  • the release bell-like member 8 on arriving at the end of the last turn, brings the intermediate bolt 9 into the position shown in Fig. 2.
  • the bell-like member 8 continues its travel'which results in the release of bolt 9 causing its nose 9b to pass between the ends 1a and 1b of the spiral guide rib l.
  • the bolt 9 is then urged against the outer wall of its housing b its spring 9' and centrifugal force.
  • the mechanism described and illustrated is constructed for a setting of three turns. It can be regulated for a time of 20, 25, 30 seconds, etc., per turn. If it is regulated for 25 seconds per turn, the setting is '75 seconds for three turns.
  • the angle of setting on the fuse which is equal to the angle of displacement of the release bell-like member, is for each second of time:
  • a mechanical time fuse mechanism for projectiles comprising a striker for detonating the fuse, a clockwork mechanism, a rotary member driven by said clockwork mechanism through a plurality of revolutions, a guide member on said rotary member in the form of a single spiral, a striker locking bolt movable to and from striker locking position, a centrifugal bolt engageable with said rotary member for retaining it against rotation, and an intermediate pivoted bolt having a portion disposed transversely to the spiral guide, a nose on the free end of said portion of dimensions capable of freely passing between the ends of said guide, a plurality of teeth on said portion having a curvature substantially the same as that of the spiral guide and spaced apart a distance equal to the pitch of said spiral guide and extending over length greater than the distance between the ends of the spiral guide, said teeth and spiral guide cooperating for shifting said intermediate bolt i one direction upon rotation in one direction for setting the fuse and for shifting said intermediate bolt in the opposite direction upon driving of the rotary member in the opposite direction by the clockwork
  • a mechanical time fuse mechanism for projectiles comprising a striker for detonating the fuse, clockwork mechanism, a rotar member driven by said clockwork mechanism through a plurality of revolutions, a guide member on said posite direction upon driving of the rotary memher in the opposite direction by the clockwork mechanism, a nose on the striker bolt, an arouate nose on the intermediate bolt concentric with the pivot axis of said intermediate bolt, and positioned to engage the nose of the striker bolt and prevent release movement of the striker bolt as long as the intermediate bolt engages the spiral guide, and means on the centrifugal bolt cooperating with said arcuate nose for shifting the centrifugal bolt out of engagement with the rotary member upon setting the fuse.
  • a mechanical time fuse mechanism for projectiles comprising a striker for detonating the fuse, a clockwork mechanism, a rotary member driven by said clockwork mechanism through a plurality of revolutions, a guide member on said rotary member in the form of a single spiral, a striker locking bolt movable to and from striker locking position, said rotary member having a notch in a peripheral portion thereof, a centrifugal bolt having a portion engageable in said notch to retain said rotary member against rotation, and an intermediate pivoted bolt having means engageable with said spiral guide for shifting said intermediate bolt in one direction upon rotation in one direction for setting the fuse and for shifting said intermediate bolt in the opposite direction upon driving of the rotary member in the opposite direction by the clockwork mechanism, said intermediate bolt having portion engaging the centrifugal bolt for shifting the centrifugal bolt to a position to release the rotary member upon setting the fuse and also engaging the striker locking bolt for controlling release movement of said striker bolt.
  • a mechanical time fuse mechanism for projectiles comprising a striker for detonating the fuse, a clockwork mechanism, a rotary member driven by said clockwork mechanism through a plurality of revolutions, a guide member on said rotary member in the form of a single spiral, a striker locking bolt movable to and from striker locking position, a centrifugal bolt engageable with said rotary member for retaining it against rotation, and an intermediate pivoted bolt having means engageable with said spiral guide for shifting said intermediate bolt in one direction upon rotation in one direction for setting the fuse and for shifting said intermediate bolt in the opposite direction upon driving of the rotary member in the opposite direction by the clockwork mechanism, and a nose on the intermediate bolt positioned to push the centrifugal bolt outwards by setting the fuse, the centrifugal bolt releasing the rotary member to allow a plurality of revolutions of said rotary member.
  • a mechanical time fuse mechanism for projectiles comprising a striker for detonating the fuse, aclockwork mechanism, a rotary member driven by said clockwork mechanism through a plurality of revolutions, a guide member on said rotary member in the form of a single spiral, a striker locking bolt movable to and from striker locking position, a centrifugal bolt engageable with said rotary member for retaining it against rotation, and an intermediate pivoted bolt having means engageable with said spiral guide for shifting said intermediate bolt in one direction upon rotation in one direction for setting the fuse and for shifting said intermediate bolt in the opposite direction upon driving of the rotary member in the opposite direction by the clockwork mechanism, said intermediate bolt having a nose cooperating with the centrifugal bolt to shift it to releasing position and controlling release movement of said striker bolt, said centrifugal bolt having a portion operable when the centrifugal bolt is in its inner position to block release movement of the striker bolt, and operable in its outer position to free the striker bolt for release movement.
  • a mechanical time fuse mechanism for projectiles comprising a fuse body, a striker, a rotary member having its axis parallel to the axis of the fuse and rotatable through a plurality of revolutions, a driven spring having one end connected to the fuse body and the other end connected to a rotary part coupled with said rotary member whereby upon rotating the rotary member in one direction the spring will be wound for subsequently rotatably driving the rotary member in the opposite direction, a clockwork mechanism coupled with said rotary member for controlling the rate of rotation of the same when driven by said spring, a striker locking bolt pivotally mounted on said body about an axis parallel to the fuse axis for movement to and from locking position, a spring urging the striker bolt outwardly from the axis of the fuse to release position, a guide member on the rotary member in the form of a single spiral rib and having a free space between the ends thereof, a centrifugal bolt pivotally mounted on said body about an axis parallel to the fuse axis,
  • a mechanical time fuse mechanism for projectiles comprising alfuse body, a striker, a rotary member having its axis parallel to the axis of the fuse and rotatable through a plurality, of
  • a rotary part coupled with said rotary member whereby upon rotating the rotary member in on direction thezspring will berwound for subsequently.rotatablydriving the rotary member in theopposite direction, a clockwork mechanism coupled with said rotary member for controlling the rate of rotation of the same when driven by said spring, a striker locking bolt pivotally mounted on said body about van axis parallel to the fuse axis for movement to.
  • a spring urgingthe striker bolt outwardly from the axis of the fuse to release position, a guide member on the rotary member in theform of a single spiralrib extending through an angle of less than 360 and having a free space between the ends thereof, a centrifugal bolt pivotally mounted on said body about an axis parallel to the fuse axis, a spring urging said centrifugal boltinwardly, an intermediate bolt pivsaid guide, a plurality of teeth on said portion,
  • a mechanical time fuse mechanism for projectiles comprising a striker for detonating the fuse, a clockwork mechanism, a rotary member driven by said clockwork mechanism through a plurality of revolutions, a guide member on said rotary member in the form of a single spiral extending through an angle of less than 360, a striker locking bolt movable to and from striker locking position, a centrifugal bolt engageable with said rotary member for retaining it against rotation, and an intermediate pivoted bo-lt having means engageable with said spiral guid for shifting said intermediate bolt in one direction upon rotation in one direction for setting the fuse and for shifting said intermediate bolt in the opposite direction upon driving of the rotary member inthe opposite direction by the clockworkmechanism, said intermediate bolt having a portion engaging the centrifugal bolt for shifting the centrifugal bolt to a position to release the rotary member upon setting the fuse and also engaging the striker locking bolt for controlling release movement of said striker bolt.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Emergency Lowering Means (AREA)
  • Lock And Its Accessories (AREA)
US222343A 1950-07-07 1951-04-23 Mechanical time fuse mechanism for projectiles Expired - Lifetime US2664046A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH686436X 1950-07-07

Publications (1)

Publication Number Publication Date
US2664046A true US2664046A (en) 1953-12-29

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US222343A Expired - Lifetime US2664046A (en) 1950-07-07 1951-04-23 Mechanical time fuse mechanism for projectiles

Country Status (7)

Country Link
US (1) US2664046A (de)
BE (1) BE503086A (de)
CH (1) CH291236A (de)
DE (1) DE884166C (de)
FR (1) FR1036522A (de)
GB (1) GB686436A (de)
NL (2) NL156251B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911915A (en) * 1954-09-24 1959-11-10 Gibbs Mfg And Res Corp Time fuse

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR511249A (fr) * 1914-05-06 1920-12-20 Rheinische Metallw & Maschf Dispositif de sureté pour fusée à temps mécanique
GB265588A (en) * 1926-02-02 1928-05-02 Josef Hrncir Clockwork fuse for projectiles
FR842692A (fr) * 1938-02-21 1939-06-16 Fusée à temps perfectionnée
CH266030A (fr) * 1943-02-19 1949-12-31 Delay Fernand Déclencheur à temps à mouvement d'horlogerie à ressort moteur.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR511249A (fr) * 1914-05-06 1920-12-20 Rheinische Metallw & Maschf Dispositif de sureté pour fusée à temps mécanique
GB265588A (en) * 1926-02-02 1928-05-02 Josef Hrncir Clockwork fuse for projectiles
FR842692A (fr) * 1938-02-21 1939-06-16 Fusée à temps perfectionnée
CH266030A (fr) * 1943-02-19 1949-12-31 Delay Fernand Déclencheur à temps à mouvement d'horlogerie à ressort moteur.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911915A (en) * 1954-09-24 1959-11-10 Gibbs Mfg And Res Corp Time fuse

Also Published As

Publication number Publication date
NL91960C (de)
BE503086A (de)
GB686436A (en) 1953-01-21
DE884166C (de) 1953-07-23
CH291236A (fr) 1953-06-15
NL156251B (nl)
FR1036522A (fr) 1953-09-08

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