US3334589A - Projectile fuze for a gun with a rifled bore - Google Patents

Projectile fuze for a gun with a rifled bore Download PDF

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Publication number
US3334589A
US3334589A US414652A US41465264A US3334589A US 3334589 A US3334589 A US 3334589A US 414652 A US414652 A US 414652A US 41465264 A US41465264 A US 41465264A US 3334589 A US3334589 A US 3334589A
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US
United States
Prior art keywords
fuze
sector
striker
support
gun
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
US414652A
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English (en)
Inventor
Simmen Robert
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
Original Assignee
Mefina 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 Mefina SA filed Critical Mefina SA
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Publication of US3334589A publication Critical patent/US3334589A/en
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Classifications

    • 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
    • F42C1/04—Impact fuzes, i.e. fuzes actuated only by ammunition impact with firing-pin structurally combined with fuze operating by inertia of members on impact
    • F42C1/06—Impact fuzes, i.e. fuzes actuated only by ammunition impact with firing-pin structurally combined with fuze operating by inertia of members on impact for any direction of impact
    • 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
    • F42C15/20—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a securing-pin or latch is removed to arm the fuze, e.g. removed from the firing-pin
    • F42C15/22—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a securing-pin or latch is removed to arm the fuze, e.g. removed from the firing-pin using centrifugal force
    • 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
    • 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

Definitions

  • the present invention has for its object a missile fuze for a gun provided with a rifled bore, said fuze including safety means operating during transportation and safety means operating during flight and designed in a manner such as to hold a primer carried by a movable support away from its cocked position, during a predetermined period following the starting of the shot, by means of a delay producing escapement while a firing system incorporating a striker subjected to the action of a spring is controlled by said time switch which includes a toothed sector adapted to pivot round an axis parallel with the general axis of the fuze and carrying an eccentric mass urging said toothed sector into angular movement under the action of centrifugal force.
  • the toothed sector of said missile fuze has an arcuate edge centered round the pivotal axis of the sector and the striker engages said edge through a collar coaxial with the striker and is released with reference to said toothed sector only when the latter has executed a complete angular movement, said toothed sector being furthermore rigid with a bolt holding the movable support against movement and releasing said movable support only when the toothed sector has executed a fraction of its angular movement.
  • FIG. 1 is an elevational sectional view of the fuze.
  • FIG. 2 is a view from above of the mechanism of said fuze.
  • FIG. 3 is a cross-section through line IIIIII of FIG. 2.
  • FIG. 4 is a cross-section through line 1VIV of FIG. 3.
  • FIG. 5 is a cross-section through line VV of FIG. 3 showing the fuze in its protected condition.
  • FIG. 6 is a view similar to FIG. 5 showing the fuze at the moment of the firing of its charge.
  • FIG. 7 is a view of a detail of the support and associated bolt.
  • FIG. 8 is a sectional view similar to FIG. 3 showing the mechanism in its firing condition.
  • FIG. 9 is a view similar to FIG. 2 showing the fuze at the moment at which the means providing safety during transportation have released the fuze.
  • the missile fuze for a gun with a rifled bore comprises as illustrated a body including a plurality of plates 1 to 9. Between the plates -1 and 2 there are fitted the safety means operating during the flight of the missile.
  • Said safety means include a primer 10 carried in an opening 11 provided in a support 12 pivotally carried between the plates 1 and 2 round a spindle 13 (FIG. 3).
  • a spring 14 urges said support 12 into clockwise rotation when seen in FIG. 5 so as to hold the primer 10 in a well-defined unarmed position lying out of the path followed by a striker 15 extending axially of the fuze.
  • the primer-carrying support 12 is provided with a weight 16 which is subjected to the action of centrifugal force acting on the fuze at the moment of the starting of the missile and consequently said weight opposes the stress ex- "ice erted by the spring 14 and urges the support 12 into an anti-clockwise direction.
  • a bolt 17 prevents such an anti-clockwise pivotal movement as long as a toothed sector 18 adapted to pivot round a spindle 19 has not been shifted out of a predetermined position shown in FIG. 5 into the firing position illustrated in FIG. 6.
  • Said toothed sector 18 extends between the plates 2 and 4 in a cut out section 20 of the plate 3.
  • Said sector 18 carries a weight 21 which, when subjected to centrifugal force, urges the sector 18 into a pivotal movement in an anti-clockwise direction when seen in FIG. 5.
  • Said toothed sector is provided with an arcuate slot 22 coaxial with the pivotal spindle 19 of the sector.
  • the edges 23 and 24 of said arcuate slot are adapted to serve as bearing surfaces for a collar 25 carried by the striker 15.
  • Said striker is adapted to slide axially inside a bore 26 provided in the plate 4.
  • a spring 27 engaging the plate 5 exerts a pressure on the collar 25 so as to downwardly urge the striker 15 which is axially held in position by the edges 23 and 24 of the slot 22 in the toothed sector 18.
  • the bolt 17 adapted to hold the support 12 in its inoperative starting position is integral with the pivotal spindle 19 of the toothed sector 18.
  • said bolt 17 is constituted by an eccentric extension of said spindle 19, which is recessed throughout a fraction of its thickness so as to allow the support 12 to pass when the recessed section of said extension of the spindle 19 registers with said support 12.
  • the teeth28 of the sector 18 mesh with the pinion 29 carried by a spindle 30 pivotally carried between the plates 2 and 7.
  • Said pinion 29 is rigid with a wheel 31 meshing with a pinion 32 pivotally carried between the plates 5 and 8.
  • Said pinion 32 is rigid with a wheel 33 meshing with a pinion 34 rigid with an escapement wheel 35.
  • the system including the pinion 34 and the escapement wheel 35 is rigid with a spindle 36 pivotally carried between the plates 5 and 9.
  • a balance wheel 37 cooperating with the escapement wheel is pivotally carried with its axle 38 between the plates 8 and 9.
  • Said balance wheel 37 is carried inside a recess 39 of the plate 9 which carries two arcuate levers 40 each pivoting around spindles 41 fitted in said plate 9.
  • a spring 42 urges each of said levers 40 in an anti-clockwise movement as seen in FIG. 2.
  • Each lever 40 carries in the vicinity of its end a pin 43 extending downwardly through an arcuate opening 44 formed in the plate 9. Said pins 43 are adapted to lock the balance wheel 37 by engaging a notch 48 in the latter.
  • the levers 40 hold the balance wheel 37 locked under the action of their springs 42. Said levers 40 thus form a safety system during transportation, which prevents any untimely operation of the escapement wheel 35 associated with the balance wheel 37.
  • the toothed sector 18 lies in the position illustrated in FIG. 5 for which the bolt 17 also prevents any movement of the support 12 which is furthermore held in its inoperative starting position by the spring 14.
  • the striker 15 it is held in its inoperative starting position by its collar 25 engaging the edges 23 and 24 of the slot 22 in the sector 18.
  • the support 12 also begins pivoting anticlockwise as seen in FIG. 5 under the action of the weight 16 and against the action of the spring 14.
  • said pivoting movement is prevented by the bolt 17 as long as the sector 18 has not extended at least a fraction of its allowed movement and, in the case illustrated, as long as the sector 18 has not reached a position near the end of its travel as illustrated in FIG. 6.
  • the bolt 17 releases the support 12, the latter occupies the position illustrated in FIG. 6, for which position the primer is located on the axis of the fuze underneath the tip of the striker 15.
  • a spring 45 carried inside the recess 46 carrying the primer 10 urges said primer 10 into a central opening 47 in the plate 1.
  • the support 12 is thus locked in its ready-to-fire position.
  • the retaining edge for the collar 25 of the striker 15, instead of being constituted by the outline of a slot 22, may be constituted by the outer edge of the sector 18; as to the bolt 17, it may as well be constituted by a member independent of the spindle 19 and be rigidly secured for instance on the sector 18.
  • the escapement system instead of being of the free balance wheel type, may be of the type incorporating a balance wheel subjected to the action of a torsional or flexional spring.
  • a striker disposed axially of the fuze unit and having a collar (25),
  • a bolt (17) constituted by an eccentric extension of said second spindle (19) preventing premature aforesaid anticlockwise movement of the support a pinion (29) adapted for engagement with the teeth (28) of the sector (18),

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Air Bags (AREA)
  • Toys (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Telescopes (AREA)
US414652A 1964-02-07 1964-11-30 Projectile fuze for a gun with a rifled bore Expired - Lifetime US3334589A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH148664A CH395803A (fr) 1964-02-07 1964-02-07 Fusée de projectile

Publications (1)

Publication Number Publication Date
US3334589A true US3334589A (en) 1967-08-08

Family

ID=4211579

Family Applications (1)

Application Number Title Priority Date Filing Date
US414652A Expired - Lifetime US3334589A (en) 1964-02-07 1964-11-30 Projectile fuze for a gun with a rifled bore

Country Status (10)

Country Link
US (1) US3334589A (da)
AT (1) AT248297B (da)
BE (1) BE654978A (da)
CH (1) CH395803A (da)
DE (1) DE1478005B2 (da)
DK (1) DK126672B (da)
ES (1) ES306093A1 (da)
FI (1) FI41504B (da)
GB (1) GB1022437A (da)
NL (1) NL6413095A (da)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3505960A (en) * 1967-03-31 1970-04-14 Armes De Guerre Fab Nat Projectile fuse and projectiles equipped with said fuse
US3670655A (en) * 1970-06-09 1972-06-20 Delaware Valley Armaments Inc Timing mechanism
US3882782A (en) * 1971-10-11 1975-05-13 Mefina Sa Mechanically operated fuse for gyratory missiles
US20110116909A1 (en) * 2008-12-08 2011-05-19 Norbert Weisser Ventilator

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4215635A (en) * 1978-12-14 1980-08-05 The United States Of America As Represented By The Secretary Of The Army Safe and arming device
DE3112669A1 (de) * 1981-03-31 1982-10-14 Uhrenfabrik Stowa Gmbh, Walter Storz, 7888 Rheinfelden Schaltuhrwerk

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2449170A (en) * 1943-11-08 1948-09-14 Gen Time Instr Corp Bomb fuse
US2821925A (en) * 1956-04-16 1958-02-04 Ufa Universal Finanzierungs Au Double-acting percussion fuze provided with a safety device for projectiles
US2897760A (en) * 1943-04-02 1959-08-04 Lewis M Mott-Smith Safety device
US3039392A (en) * 1958-07-25 1962-06-19 Mefina Sa Projectile fuze for a gun with a rifled bore

Patent Citations (4)

* 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
US2449170A (en) * 1943-11-08 1948-09-14 Gen Time Instr Corp Bomb fuse
US2821925A (en) * 1956-04-16 1958-02-04 Ufa Universal Finanzierungs Au Double-acting percussion fuze provided with a safety device for projectiles
US3039392A (en) * 1958-07-25 1962-06-19 Mefina Sa Projectile fuze for a gun with a rifled bore

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3505960A (en) * 1967-03-31 1970-04-14 Armes De Guerre Fab Nat Projectile fuse and projectiles equipped with said fuse
US3670655A (en) * 1970-06-09 1972-06-20 Delaware Valley Armaments Inc Timing mechanism
US3882782A (en) * 1971-10-11 1975-05-13 Mefina Sa Mechanically operated fuse for gyratory missiles
US20110116909A1 (en) * 2008-12-08 2011-05-19 Norbert Weisser Ventilator

Also Published As

Publication number Publication date
DK126672B (da) 1973-08-06
AT248297B (de) 1966-07-25
FI41504B (da) 1969-07-31
BE654978A (da) 1965-02-15
DE1478005B2 (de) 1977-02-03
ES306093A1 (es) 1965-05-01
NL6413095A (da) 1965-08-09
CH395803A (fr) 1965-07-15
DE1478005A1 (de) 1969-03-13
GB1022437A (en) 1966-03-16

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