US3392671A - Rocker arm ignition device - Google Patents

Rocker arm ignition device Download PDF

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Publication number
US3392671A
US3392671A US595662A US59566266A US3392671A US 3392671 A US3392671 A US 3392671A US 595662 A US595662 A US 595662A US 59566266 A US59566266 A US 59566266A US 3392671 A US3392671 A US 3392671A
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US
United States
Prior art keywords
safety guard
firing pin
guard lever
ignition device
rocker arm
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
US595662A
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English (en)
Inventor
Hinzmann Friedmar
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.)
PYROTECHUISCHE FABRIK F FEISTE
Pyrotechuische Fabrik F Feistel K G
Original Assignee
PYROTECHUISCHE FABRIK F FEISTE
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 PYROTECHUISCHE FABRIK F FEISTE filed Critical PYROTECHUISCHE FABRIK F FEISTE
Priority to GR670134486A priority Critical patent/GR34486B/el
Application granted granted Critical
Publication of US3392671A publication Critical patent/US3392671A/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

  • the invention concerns an improved grenade having a fuse which comprises a retaining or locking spring member positioned betweerrthe spring loaded hinged firing pin and the .usual safety guard lever which usually swings in the same direction as the firingpin of the fuse.
  • the locking spring member isprovided at one end with a lug which is inserted into a bore hole in the top of the fuse body. This joint serves as the pivot point of the member.
  • the member has a contour which follows that of the retracted firing pin and of the adjacent part of the safety guard lever. Its free end presses against a .notch in the safety guard lever above the pivot point of the latter.
  • the member retains the firing pin in its initial cocked position until the safety guard lever has swung around by at least about 70 from the body of the grenade and has become detached from the fuse. The member then is swung outwardly on its pivot by the force of the firing pin spring as it swings the firing pin through its firing arc and against the primer.
  • the present invention relates to a rocker arm ignition device and more particularly to a rocker arm ignition device for projectiles which device is constructed of a springloaded, hinged firing pin and a safety guard lever swinging in the same direction as the firing pin.
  • Such rocker arm ignition or detonating devices for instance, for hand grenades, usually consist of a top part which carries the priming composition of the projectile initiator. Ignition of said priming composition or primer is effected by causing a spring-loaded firing pin axially rotatably arranged in the top part of the ignition device, to be released and impelled thereonto. Said firing pin is held under tension by a safety guard lever which onesidedly engages the ignition top part and is hooked thereinto and which is locked and secured to the top part of the ignition or detonating device in its initial position by means of a safety member such as a safety pin.
  • a safety guard lever which onesidedly engages the ignition top part and is hooked thereinto and which is locked and secured to the top part of the ignition or detonating device in its initial position by means of a safety member such as a safety pin.
  • the safety member When using the projectile, for instance, the hand grenade, the safety member is pulled out of the safety guard lever and the ignition top part.
  • the hand of the person throwing the hand grenade grips and encircles the safety guard lever as Well as the main part of the hand grenade and thus keeps it in secured position.
  • On throwing the hand grenade i.e. when the throwers hand is opened, first the safety guard lever is forced away from the body of the hand grenade. Thereby, the safety guard lever and the firing pin are caused by the tension of the cocking spring to swing simultaneously around the axes of their respective mountings until the firing pin is released. This position is attained after the safety guard lever has been caused to swing around its axis by about 60.
  • the firing pin rapidly precedes the safety guard lever and ignites the priming composition by its impact thereon.
  • the safety guard lever is fully detached from the hand grenade body due to the tension of the cocking spring and its pivotal attachment to the top part of the hand grenade.
  • Such an ignition or detonating device is highly 3,392,671 Patented July 16, 1968 unreliable because the safety guard lever may carry out a the above mentioned swinging movement and may thus release the firing pin even if the hand of the thrower is only partly opened although the throwing person may still hold the hand grenade with the pivotally attached safety guard lever in his hand. Since the thrower may readily fail to hear and notice that the firing pin has been released, unintentional and premature ignition and detonation of such hand grenades is possible.
  • the safety devices provided in hand grenades with a straight-guided firing pin or with a firing pin which is tilted with respect to the primer do not exclude such a premature ignition or detonation on throwing.
  • the firing pin is retained and locked in its initial cocked position until the safety guard lever has swung around by at least about 70 and has become detached from the top part of the ignition device.
  • the retaining or locking spring member will be released from its position and will also release the firing pin only when the safety guard lever is completely separated and detached from the hand grenade.
  • the retaining or locking spring member is provided at one end with a tongue or lug which is freely movably inserted into a bore hole in the top part of the ignition device.
  • This joint is the pivot around which the retaini g or locking spring swings on throwing the hand grenade when the safety guard lever has swung around the above mentioned predetermined angle.
  • the other free end of the retaining or locking spring member is bent upwardly and presses or pushes against the edge of a notch or recess in the safety guard lever in which it is engaged.
  • FIG. 1 illustrates a hand grenade with the heretofore used ignition device, partly in cross-sectional view
  • FIG. 2 shows a hand grenade with the ignition device according to the present invention, partly in cross-sectional view
  • FIG. 3 illustrates the position of the ignition device according to FIG. 2 with upwardly swung safety guard immediately before ignition, partly in cross-sectional view;
  • FIG. 4 is a top plan view of the hand grenade with the rocker arm ignition device according to FIG. 2;
  • FIGS. 5a and 5b how the retaining or locking spring member in cross-sectional view and in top plan view.
  • Top part 2 of the ignition device is screwed on hand grenade body I.
  • Said top part 2 carries the delaying and priming composition 3.
  • Firing pin 4 is pivotally arranged about shaft 5 and is pushed against safety guard lever 7 by tension or cocking spring 6.
  • Safety guard lever 7 is attached to transverse shaft 9 by means of its hook-shaped ends 8 and is kept in its position by safety pin or cotter 10 which is passed through safety guard lever 7 and top part 2 of the ignition device.
  • safety guard lever 7 When actuating the known ignition device of FIG. 1 and removing safety pin 10, safety guard lever 7 is forced upwardly by the tension of spring 6 of firing pin 4 on opening the hand gripping the hand grenade until the position 7a of said safety guard lever 7 is attained as indicated in FIG. 1. It is evident that firing pin 4 is capable of slipping underneath safety guard lever 7 and of impacting upon primer 3 thus igniting the same. The upward movement of safety guard lever 7 usually continues due to the momentum imparted thereto by the release of firing pin 4 and the tension of spring 6 thus causes said safety guard lever 7 to become detached from shaft 9.
  • FIG. 1 clearly shows that firing pin 4 will slip underneath safety guard lever 7 and will actuate the firing mechanism even if the hand of the grenade thrower is only partly opened and without the safety guard lever 7 being completely detached from the hand grenade.
  • FIGS. 2 and 4 illustrate the hand grenade with the ignition device according to the present invention when not actuated and FIG. 3 shows said device when actuated, i.e. immediately before ignition of the priming composition.
  • top part 2 of the ignition device is screwed into hand grenade body 1.
  • Said top part 2 carries delaying and priming composition 3.
  • retaining or locker spring 11 between firing pin 4 cocked by means of cocking spring 6 and safety guard lever 7.
  • Said locking spring 1 1 is mounted in bore of top part 2 of the hand grenade. Its free end 12 is upwardly bent and pushes against edge 16 of recess 14 provided between the two hook-shaped ends 8 of safety guard lever 7. Said hookshaped ends 8 are engaged around transverse shaft 9 provided in top part 2.
  • FIG. 3 shows the position of locking spring 11 when it lifts safety guard lever 7 from its mounting.
  • said safety guard lever 7 is ejected and detached from the hand grenade in the direction of arrow a.
  • Locking spring 11 can be lifted by firing pin 4 from its mounting in bore 15 only after safety guard lever 7 has been detached.
  • said locking spring 7 moves in the direction of arrow b and thus rleases firing pin 4 so that it may impact upon priming composition 3 by moving as indicated by arrow 0.
  • FIGS. 5a and 5b illustrate a suitable and effective retaining and locking spring -11.
  • igniting device for igniting other projectiles, such as smoke bombs, tear gas bombs, or others.
  • a rocker arm igniting device for igniting the priming composition of a projectile by the impact of a firing pin thereon, said device having a firing pin pivotally mounted on the top part of the projectile carrying the priming composition, a safety guard lever attached to said top part and swinging in the same direction of rotation as the firing pin, the firing pin being forced against the safety guard lever by the action of a cocking spring, a safety member arranged to counteract the action of the cocking spring of the firing pin and to keep the safety guard lever in its position so as to prevent the firing pin from impacting the priming composition, said safety member being removable to release the firing in and the safety guard lever, and a locking spring member provided between the firing pin and the safety guard lever, said locking spring member, when released, swinging in opposite direction to the movement of the firing pin and the safety guard lever, said locking spring member being under pre-tension and releasing the firing pin only after causing the safety guard lever to swing by at least about about its axis of attachment to the top part of the projectile.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Emergency Lowering Means (AREA)
  • Automotive Seat Belt Assembly (AREA)
US595662A 1965-11-24 1966-11-21 Rocker arm ignition device Expired - Lifetime US3392671A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GR670134486A GR34486B (el) 1966-11-21 1967-11-08 Προιοντα καπνισματος και μεθοδοι δια την κατασκευην των τοιουτωνπροιοντων.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP38186A DE1289765B (de) 1965-11-24 1965-11-24 Kipphebelzuender fuer Wurfkoerper

Publications (1)

Publication Number Publication Date
US3392671A true US3392671A (en) 1968-07-16

Family

ID=7375732

Family Applications (1)

Application Number Title Priority Date Filing Date
US595662A Expired - Lifetime US3392671A (en) 1965-11-24 1966-11-21 Rocker arm ignition device

Country Status (4)

Country Link
US (1) US3392671A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) AT267369B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1289765B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NO (1) NO119572B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685451A (en) * 1969-02-28 1972-08-22 Schermuly Ltd Striker mechanisms for percussion igniters
US4333401A (en) * 1979-08-13 1982-06-08 Charles M. Byers Hand grenade
US20060283346A1 (en) * 2005-06-20 2006-12-21 Thorsten Luebbers Rocker-arm igniter
USD573516S1 (en) * 2007-04-11 2008-07-22 Frazier John R Vehicle hitch ornament
US8857341B1 (en) * 2013-08-30 2014-10-14 The United States Of America As Represented By The Secretary Of The Army Flying primer for hand grenade fuze
US9846019B1 (en) 2016-06-17 2017-12-19 Rheinmetall Waffe Munition Arges Gmbh Rocker arm detonator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL2940421T3 (pl) 2014-04-29 2022-04-04 Rheinmetall Waffe Munition Arges Gmbh Zapalnik z dźwignią wahliwą

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2562928A (en) * 1945-10-10 1951-08-07 Lewis Bernard Grenade
US2737116A (en) * 1952-01-29 1956-03-06 Manzolini Ettore Grenade
US3072056A (en) * 1955-12-05 1963-01-08 Herman R Kollmeyer Split grenade

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1010422B (de) * 1954-06-30 1957-06-13 Karl Henrik Sunden Schlaghahnzuender fuer Handgranaten

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2562928A (en) * 1945-10-10 1951-08-07 Lewis Bernard Grenade
US2737116A (en) * 1952-01-29 1956-03-06 Manzolini Ettore Grenade
US3072056A (en) * 1955-12-05 1963-01-08 Herman R Kollmeyer Split grenade

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685451A (en) * 1969-02-28 1972-08-22 Schermuly Ltd Striker mechanisms for percussion igniters
US4333401A (en) * 1979-08-13 1982-06-08 Charles M. Byers Hand grenade
US20060283346A1 (en) * 2005-06-20 2006-12-21 Thorsten Luebbers Rocker-arm igniter
USD573516S1 (en) * 2007-04-11 2008-07-22 Frazier John R Vehicle hitch ornament
US8857341B1 (en) * 2013-08-30 2014-10-14 The United States Of America As Represented By The Secretary Of The Army Flying primer for hand grenade fuze
US9846019B1 (en) 2016-06-17 2017-12-19 Rheinmetall Waffe Munition Arges Gmbh Rocker arm detonator

Also Published As

Publication number Publication date
AT267369B (de) 1968-12-27
NO119572B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1970-06-01
DE1289765B (de) 1969-02-20

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