GB508912A - Improvements in or relating to clockwork safety mechanism for explosive projectiles - Google Patents

Improvements in or relating to clockwork safety mechanism for explosive projectiles

Info

Publication number
GB508912A
GB508912A GB19016/38A GB1901638A GB508912A GB 508912 A GB508912 A GB 508912A GB 19016/38 A GB19016/38 A GB 19016/38A GB 1901638 A GB1901638 A GB 1901638A GB 508912 A GB508912 A GB 508912A
Authority
GB
United Kingdom
Prior art keywords
predetermined time
clockwork
time interval
firing pin
disc
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
Application number
GB19016/38A
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
Publication of GB508912A publication Critical patent/GB508912A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • F42C15/44—Arrangements for disarming, or for rendering harmless, fuzes after arming, e.g. after launch
    • 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

Abstract

508,912. Projectile fuzes. MEFINA SOC. ANON. June 27, 1938, No. 19016. Convention date, June 30, 1937. [Class 9 (i)] A clockwork safety mechanism for projectile fuzes comprises a movable member which prevents ignition of the explosive charge until a predetermined time after discharge of the projectile, and then after a further predetermined time interval again disarms the fuze. In the construction shown, a rotary disc 16 driven by the clockwork spring 12 is interposed between the firing pin 10 and the priming charge 11. The disc is provided with an arcuate slot 17, which is of such a length and so disposed that it is brought into alignment with the firing pin after the first predetermined time interval, and remains in alignment therewith, to allow the passage of the firing pin, during the second predetermined time interval. According to a modification, the disc 16 may be interposed between.the priming charge and the detonator. In the case of projectiles having axial spin, the shut-off member may be operated by centrifugal force, the slot in this case being straight.
GB19016/38A 1937-06-30 1938-06-27 Improvements in or relating to clockwork safety mechanism for explosive projectiles Expired GB508912A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH199818T 1937-06-30

Publications (1)

Publication Number Publication Date
GB508912A true GB508912A (en) 1939-07-07

Family

ID=4517333

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19016/38A Expired GB508912A (en) 1937-06-30 1938-06-27 Improvements in or relating to clockwork safety mechanism for explosive projectiles

Country Status (6)

Country Link
BE (1) BE428837A (en)
CH (1) CH199818A (en)
DE (1) DE688572C (en)
FR (1) FR839885A (en)
GB (1) GB508912A (en)
NL (1) NL51181C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2060868A2 (en) * 2007-11-16 2009-05-20 JUNGHANS Microtec GmbH Safety device for a fuse

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL101169C (en) * 1951-04-13
DE1045285B (en) * 1955-01-31 1958-11-27 Junghans Geb Ag Rifle fuse
DE1053358B (en) * 1956-04-17 1959-03-19 Ufa Universal Finanzierungs An Impact fuse for particularly twistless projectiles with a toothed safety slide
CH337099A (en) * 1957-03-28 1959-03-15 Soc D Expl Et D Applic Tech Et Rocket for projectile
FR2501360B1 (en) * 1981-03-09 1986-11-21 Lacroix E Tous Artifices CARTRIDGE WITH PYROTECHNICALLY OPERATING USEFUL LOAD EXPLOSING AFTER REBOUND
FR2517048A1 (en) * 1981-11-23 1983-05-27 Luchaire Sa Firing plug for hand grenade - has two pyrotechnic paths for fused and/or percussion firing
CH661169GA3 (en) * 1985-06-06 1987-07-15

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2060868A2 (en) * 2007-11-16 2009-05-20 JUNGHANS Microtec GmbH Safety device for a fuse

Also Published As

Publication number Publication date
BE428837A (en)
CH199818A (en) 1938-09-15
NL51181C (en)
DE688572C (en) 1940-02-26
FR839885A (en) 1939-04-13

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