US2079178A - Igniter for grenades - Google Patents

Igniter for grenades Download PDF

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Publication number
US2079178A
US2079178A US6169A US616935A US2079178A US 2079178 A US2079178 A US 2079178A US 6169 A US6169 A US 6169A US 616935 A US616935 A US 616935A US 2079178 A US2079178 A US 2079178A
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US
United States
Prior art keywords
pyrotechnical
cap
tube
casing
fluid
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
US6169A
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English (en)
Inventor
Mortreux Andre Valere Adrien
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.)
ALSACIENNE D EXPLOSIFS SOC
ALSACIENNE D'EXPLOSIFS Ste
Original Assignee
ALSACIENNE D EXPLOSIFS SOC
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 ALSACIENNE D EXPLOSIFS SOC filed Critical ALSACIENNE D EXPLOSIFS SOC
Application granted granted Critical
Publication of US2079178A publication Critical patent/US2079178A/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
    • F42C14/00—Mechanical fuzes characterised by the ammunition class or type
    • F42C14/02—Mechanical fuzes characterised by the ammunition class or type for hand grenades

Definitions

  • This invention relatesto an igniter for grenades, essentially characterized, on the one hand,
  • the mechanical part and the pyrotechnical part are entirely independent and G5 are connected only at the time of assemblage and, on the other hand, by the fact that the pyrotechnical part constitutes a unit having a fluidtightness of its own.
  • the fluid-tightness of the pyrotechnical part is not ensured as long as the assemblage with the mechanical part is not effected, so that any separate storage of the pyrotechnical part is practically prevented, as
  • the entire mechanical part is known per se. It comprises,within a cap I externally screw threaded at l for screwing the igniter on the grenade,-a percussion pellet 3 which is subjected to the action of a spring 2 and carries the needle or striker 5.
  • the locking of the percussion pellet is effected by a claw 6 which, passing in a slot of the striker, presses against the base 3 of the percussion pellet.
  • the locking claw 6 is itself rigid with a lever 6, the pivot pin 6 of which simply rests on two bearings of a fork piece l provided on the head or cap I.
  • This lever is locked, on the other hand, in the safety position illustrated in the figure, by means of a pin 1 passing through the lever and through a fork piece I of the head. In this position, a packing 4 is clamped between a bearing portion of the locking lever and the edge of the aperture I through which the claw (i enters the cap I.
  • This pyrotechnical part is entirely enclosed within a metal case l2 which carries (in the order indicated in the drawing from top to bottom), the percussion cap ID, the burning tube or delay l3, and the detonator l5.
  • the cap I0 rests on a support 9, the bottom of which is open and surrounded by a small quantity of a special composition I1, serving as an ignition relay.
  • the delay I3 is constituted by a burning tube charged with a special powder ensuring a very regular combustion and giving little residue in order that the vent holes 3 of the percussion pellet 3 should remain unobstructed.
  • This burning tube is inserted at its upper part in a socalled delay-carrying tube H. Under the latter is threaded a cardboard tube M on which is engaged the upper part of the detonator l5 which rests against the bottom of the case I2 through a washer I6.
  • a cover 8 made of a waterproof and malleable material, such as metal, plastic material, etc.
  • This cover after interposition of a special lute, is beaded between two conical surfaces provided on the case l2 and on the delay-carrying tube II, at their upper end. Owing to the conical shape of the two clamping surfaces, the cover 8 is firmly held so that the pyrotechnical part thus closed constitutes a unit having a fluid-tightness of its own.
  • the mechanical part gives to the unit thus 55 Particularly, even after remaining for 50 constituted its well known advantages.
  • the pyrotechnioal part constituted as a fluid-tight unit, can be preserved intact during a practical indefinite period of time, whether it is fitted on the cap or Whether it remains stored before assemblage.
  • An igniter for grenades comprising: a mechanical part and a pyrotechnical part entirely independent and connected only at the time of assemblage, the pyrotechnical part including a fluid-tight casing, a delay-carrying element within this casing, two sets of conical surfaces provided at the upper part of the casing and of the delay-carrying element, respectively, and a cover made of waterproof and malleable material beaded between both sets of conical surfaces.
  • An igniter for grenades constituted Ioy a mechanical part and a pyrotechnical part entirely independent, the mechanical part comprising a cap with means for securing it on the grenade, a spring percussion pellet carrying a striker, means for locking said percussion pellet and comprising a claw pressed against the latter, a pivoted lever carrying said locking claw, a pin for locking said lever, the pyrotechnical part being and completely fluid-tight and comprising a case containing a percussion cap, a burning tube, a delay tube, a detonator, a delay-carrying tube enclosing the upper part of the burning tube, a cardboard tube on which is threaded the upper part of the detonator, two sets of conical surfaces provided on the upper part of the case and of the delay-carrying tube, respectively, and a waterproof and malleable cover beaded between both sets of conical surfaces and ensuring to said case a fluid-tightness of its own.
  • An igniter for grenades including a mechanism casing having an open lower end adapted to project into the grenade, a fluid tight tube forming a fuse casing and closed at its lower end, the open end of the tube being fitted in the open end of the mechanism casing, a fluid tight closure for the fuse casing, a fuse in said fuse casing, an explosive cap supported at the end of the fuse casing covered by said closure, said fuse casing being internally of inverted frustoconical form, and an inverted frusto-conical member in said tube supporting the cap, said cap being provided with a peripheral skirt held between said frusto-conical portions.
  • a mechanism casing having an open lower end adapted to project into the grenade, a fluid tight tube forming a fuse casing and closed at its lower end, the open end of the tube being fitted in the open end of the mechanism casing, a fluid tight closure for the fuse casing, a fuse in said fuse casing, an explosive cap supported at the end of the fuse casing covered by said closure,
  • said fuse casing being internally of inverted frusto-conical form, an inverted frusto-conical member in saidtube supporting the cap, said cap being provided with a peripheral skirt held between said frusto-conical portions, and a shoulder in said mechanism casing against which the fuse casing abuts to limit its movement into the mechanism casing.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Steps, Ramps, And Handrails (AREA)
US6169A 1934-04-10 1935-02-12 Igniter for grenades Expired - Lifetime US2079178A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR660726X 1934-04-10

Publications (1)

Publication Number Publication Date
US2079178A true US2079178A (en) 1937-05-04

Family

ID=9010425

Family Applications (1)

Application Number Title Priority Date Filing Date
US6169A Expired - Lifetime US2079178A (en) 1934-04-10 1935-02-12 Igniter for grenades

Country Status (5)

Country Link
US (1) US2079178A (enrdf_load_stackoverflow)
BE (1) BE407413A (enrdf_load_stackoverflow)
DE (1) DE660726C (enrdf_load_stackoverflow)
FR (1) FR784402A (enrdf_load_stackoverflow)
GB (1) GB438312A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2547820A (en) * 1945-12-29 1951-04-03 Gustaf W Hammar Fuse and igniter
US3498223A (en) * 1967-06-30 1970-03-03 Forsvarets Fabriksverk Lever-controlled fuse for hand grenades

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2547820A (en) * 1945-12-29 1951-04-03 Gustaf W Hammar Fuse and igniter
US3498223A (en) * 1967-06-30 1970-03-03 Forsvarets Fabriksverk Lever-controlled fuse for hand grenades

Also Published As

Publication number Publication date
BE407413A (enrdf_load_stackoverflow)
GB438312A (en) 1935-11-14
FR784402A (fr) 1935-07-22
DE660726C (de) 1938-06-01

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