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US2939394A - Mechanically operated time fuse for artillery ammunition - Google Patents

Mechanically operated time fuse for artillery ammunition Download PDF

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Publication number
US2939394A
US2939394A US561584A US56158456A US2939394A US 2939394 A US2939394 A US 2939394A US 561584 A US561584 A US 561584A US 56158456 A US56158456 A US 56158456A US 2939394 A US2939394 A US 2939394A
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US
United States
Prior art keywords
carrier
fuse
transmission member
clockwork
recess
Prior art date
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
US561584A
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English (en)
Inventor
Leroy Rene
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.)
Dixi SA
Original Assignee
Dixi SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dixi SA filed Critical Dixi SA
Application granted granted Critical
Publication of US2939394A publication Critical patent/US2939394A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • This time fuse is of the type provided with a clockwork actuated by moving weights which are shifted centrifugallyalong a spirally shaped raceway with a viewto driving a transmission member controlling said clockwork.
  • the transmission member and themoving weights driving the latter are mounted inside a hollow member also carrying the clockwork and adapted to be shifted 'angularly with referenceto the body of the fuse when the latter is being timed andto be locked with reference to said body of the fuse at the moment of firing.
  • Suchafuse shows the advantagejthat the timing may be-performed in either direction starting from any desired timing vaiue without any modification in the starting position of the moving weights with reference to their raceways which are formed inside the angularly adjustable hollow member. 7 A p it 7 1 N V
  • the accompanying drawings illustrate by way of example two preferred embodiments of the time fuse according to the invention.
  • Fig. l is a partial axial cross-section of the fuse according to the first embodiment ofthe invention
  • Fig. 2 is a cross-section through line II--II of Fig. 1.
  • Fig. '3J is a partial axial cross sectional view of a fuse according to the second embodiment.
  • Fig. 4 is a cross-section through line IV -11V of Fig. 3. 7
  • Fig. 1 illustrating the firstrembodiment of the improved fuse
  • 1 designates the fuse body on which is frictionally and revolubly fitted the scale-carrying cap 2 which is rigid with a hollow member 3 forming a 'carrier for the clockwork.
  • the firstgear or'pinion of the clockwork is shown at 4. It meshes with-a toothed wheel 5 keyed to the upper end of a central frusto-conical transmission member 6 revolubly mounted in the carrier 3 and provided along its periphery with longitudinal ball guidinggrooves 6a.
  • the transmission member '6 is inits turn driven by movable weights or balls 7 guided insaid longitudinal grooves of the transmission member, said balls rolling under the action of centrifugal 'force alongspirally-shaped grooves 12 formed in an inner frusto-conical recessprovided in the clockwork carrier 3.
  • the transmission member6 carries at its lower end a disc or plate 8 coaxial therewith and said disc is provided with a radial notch at 8a also shown in .Fig. 2 as registering at the start with the'projection 3a.
  • the fuse body 1 Underneath the disc-8, the fuse body 1 carries a radially sliding primer carrier 9, the primer 9a in which is adapted to be ignited through impact on the striker 10 when the primer carrier is shifted outwardly against'the striker under the action of centrifugal force.
  • the primer 9a in which is adapted to be ignited through impact on the striker 10 when the primer carrier is shifted outwardly against'the striker under the action of centrifugal force.
  • said primer carrier 9 is locked by a rocking bolt 11 which engages when the fuse is in its safety condition the outer surface of the locking projec- .body 1.
  • the cap 2 For timing the fuse, the cap 2 should be shifted angularly to an extent corresponding to the time required before'ignition and this leads to an equal angular bodily shifting of the clockwork carrier 3, of the clockwork and of the transmission member 6 since said clockwork is locked with reference to the carrier by various bolts operated through. inertia and centrifugal force, as shown in the patent to C. Aragone No. 1,999,747 granted April 30, 1935, or the Australian patent to G. Perrenoud No. 131,792 granted March 16, 1949. It is thus readily 3P.- parent that-the timing may be performed in either direction starting from any timing value, without this modifying the relative position of the balls 7 with reference to their raceways on the carrier 3.
  • the clockwork is released while the clockwork carrier 3 is locked with reference to the fuse body by a centrifugally operating bolt as shown in the above mentioned patents.
  • the clockwork is now driven through the agency of the transmission member by the balls 7.
  • the disc 8 revolves with the transmis sion member 6 and shifts its notch 8a away from the locking projection 3a on the carrier and, after a sufficient time has elapsed, the notch 8a returns into register with the rocking bolt 11 which is urged outwardly by the primer carrier 9 and is caused to rock so as to collapse within said notch whereby the primer carrier is released and provides through its outward movement for the ignition of the primer at by the striker 10 at the moment defined .by the timing ofthe fuse for bringing as described the notch 8a back into register with the locking sion member 26, the'shape of which matches this reversal of the grooved recess'in the carrier 23. 1
  • the transmission member 26 carries at its lower end a heavy striker*27 adapted to impinge on and to 'ignite a primer 28a carried in the primer carrier 28 permanently securedinside a housing formed for it inside the fuse
  • The'bottom of the chamber formedin the fuse body 1 to house the timing means is provided with an annular inner shoulder 29 which prevents the striker '27 from moving outwardly except at a point of its periphery facing the primer in front'of which a notch 29a is formed in "said shoulder through which notch the striker may move as clearly shown in Fig. 4.
  • the clockwork carrier "23 ' is provided atits 'lowerend with a radial downwardly directed projection 23a locking the st1iker'27 "for those positions for which the striker should not be'releas'ed, said projection registering with the notch 29a'for the inoperative condition of the fuse before timing, to hold the striker in'itsinner position.
  • 1projection23lz is thus located in front of theheavystriker 27 and abo'vethe striker gridingnotch 29a. 'Whenth'e 'fuse is being timed, the clockwork carrier '23 is shifted angu-larly'throughthe value'corresponding to the desired delay of ignition, starting from any preceding obtained A 'A A position; As te th e clockwork, it rotates together with its carrier in which it is locked by means of bolts, not
  • the clockwork carrier 23 is locked a already mentioned with reference to the first embodiment according to Figs. 1 and 2 while the clockwork is released and starts rotating through the agency of the transmission member 26 which carries 7 along with its the striker 27 so that the latter is angularlyshifted away from the projection 23a along'the shoulder 29 until it reaches after a predetermined time a position facing the'gnotch 29a in the latter whereby it is now allowed to move freely outwardly and to impinge on and ignite the primer 28a-
  • the parts of one embodiment may be associated with parts of the other and for instance the locationsof the striker and primer may be exchanged in either embodiment.
  • WhatIclaim is: l V 1.
  • a rotating mechanical fuse for an artillery missile wherein there is a clockwork mechanism controlling the speed of rotation of a transmission member, a carrier for said clockwork mechanism, means for locking said carrier from angular movement with reference to the body of said fuse upon firing said missile and means for locking said transmission member with reference to said carrier in a predetermined angular position which is released upon firing said missile, the combinationof a fuse body, said carrier having a substantially coaxial frus-to conical recess mounted within said fuse body.
  • said transmission member being substantially frustoconical and being rotatably mounted on said carrier in said recess, said transmission memberhaving position to an operative position for setting a predeter- 1 its outer wall spaced from the wall of.
  • said recess .-a spiral-shaped raceway in the wall of said recess, .a weight movable in said raceway contacting said transmission member when subjected to centrifugal force toirot ate said transmission member within said carrier, at priming arrangement comprising two parts, a striker and a primer, a first part of said parts being fixed to said fuse body and the second of said parts being mounted to slide outward- 1y toward said first part'in a radial direction by'centrifugal force, means on said carrier holding said second part against outwardimovement, and means on said transmission member f'or releasing said means holding said second part upon termination of the set predetermined time lag and the return of said carrier to zero position.
  • a rotatingmechanical :fuse' for'an artillery missile wherein there is a clockwork mechanism controlling the speed of rotation of a transmission member, a car'- rier for said clockworktmechanism, means for locking said'carrierfrom angular movement with reference to the body of said fuse upon firing said missile and means for locking said transmission member with'reference' to said carrier in a predetermined angular position'which is released upon firing said missile, the combination of a fuse body, said carrier having a substantially coaxial frustoconical recessmounted within said fuse body andIbeing angularly movable relative to said fuse' body from a substantially frustoconical and being rotatably mounted on said carrier in saidv recess, said transmission member having its outer wall spaced from the wall .of said recess,
  • a carrier for said clockwork mechanism means for locking said carrier from angular-movement with reference to the body of'said' fuse upon firing said missile and means for locking said transmission member with reference to said carrier in a predetermined angular'position which is released upon firing said missile
  • the combination of a fuse body, said carrier having a substantially coaxial frustoconical recess flaring away' from the tip of said fuse mountedwithin said fuse body and being angularly' movable relative to said fuse body from a zero position to an operative position for setting a predetermined'time lag
  • said transmission member being substantially frustoconicalflaring away from the tip of said "fuse and being rotatably mounted on said carrier in said recess, said transmission member having its outer wall spaced from the wall ofvsaid recess, a spiral-shaped raceway in the wall'of 'said' recess
  • a carrier for said clockwork mechanism controlling the speed of rotation of a transmission member
  • the combination of a fuse body, said carrier having a substantially coaxial frustoconical recess mounted within said fuse body and being angularly movable relative to said fuse body from a zero position to an operative position for setting a predetermined time lag
  • said transmission member being substantially frustoconical and being rotatably mounted on said carrier in said recess, said transmission member having its outer wall spaced from the wall of said recess, a spiral-shaped raceway in the wall of said recess, a weight movable in said raceway contacting said transmission member when subjected to centrifugal force to rotate said transmission member within said carrier, at priming
  • a rotating mechanical fuse for an artillery missile wherein there is a clockwork mechanism controlling the speed of rotation of a transmission member, a carrier for said clockwork mechanism, means for locking said carrier from angular movement with reference to the body of said fuse upon firing said missile and means for locking said transmission member with reference to said carrier in a predetermined angular position which is released upon firing said missile, the combination of a fuse body, said carrier having a substantially coaxial frustoconical recess mounted within said fuse body and being angularly movable relative to said fuse body from a zero position to an operative position for setting a predetermined time lag, said transmission member being substantially frustoconical and being rotatably mounted on said carrier insaid recess, said transmission member having its outer wall spaced from the wall of said recess, a spiral-shaped raceway in the wall of said recess, a weight movable in said raceway contacting said transmission member when subjected to centrifugal force to rotate said transmission member within said carrier, centri

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmission Devices (AREA)
  • Mechanical Operated Clutches (AREA)
  • Air Bags (AREA)
US561584A 1955-02-02 1956-01-26 Mechanically operated time fuse for artillery ammunition Expired - Lifetime US2939394A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH823771X 1955-02-02

Publications (1)

Publication Number Publication Date
US2939394A true US2939394A (en) 1960-06-07

Family

ID=4539712

Family Applications (1)

Application Number Title Priority Date Filing Date
US561584A Expired - Lifetime US2939394A (en) 1955-02-02 1956-01-26 Mechanically operated time fuse for artillery ammunition

Country Status (6)

Country Link
US (1) US2939394A (de)
BE (1) BE544498A (de)
CH (1) CH323643A (de)
DE (1) DE1000719B (de)
GB (1) GB823771A (de)
NL (2) NL204142A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4095529A (en) * 1977-02-17 1978-06-20 General Electric Company Setting ring stop

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4596753A (en) * 1985-04-24 1986-06-24 Gte Government Systems Corporation Spin released reservoir for electrochemical cells and like articles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US896135A (en) * 1904-12-19 1908-08-18 Bethlehem Steel Corp Mechanical time-fuse.
US969497A (en) * 1909-04-19 1910-09-06 Eugene Schneider Fuse for explosive projectiles.
US1999747A (en) * 1933-10-17 1935-04-30 Aragone Carle Projectile
US2531121A (en) * 1944-10-05 1950-11-21 Borg George W Corp Mechanical time fuse

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US896135A (en) * 1904-12-19 1908-08-18 Bethlehem Steel Corp Mechanical time-fuse.
US969497A (en) * 1909-04-19 1910-09-06 Eugene Schneider Fuse for explosive projectiles.
US1999747A (en) * 1933-10-17 1935-04-30 Aragone Carle Projectile
US2531121A (en) * 1944-10-05 1950-11-21 Borg George W Corp Mechanical time fuse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4095529A (en) * 1977-02-17 1978-06-20 General Electric Company Setting ring stop

Also Published As

Publication number Publication date
GB823771A (en) 1959-11-18
BE544498A (de)
NL97903C (de)
NL204142A (de)
DE1000719B (de) 1957-01-10
CH323643A (fr) 1957-08-15

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