US2164797A - Percussion fuse for projectiles - Google Patents

Percussion fuse for projectiles Download PDF

Info

Publication number
US2164797A
US2164797A US183344A US18334438A US2164797A US 2164797 A US2164797 A US 2164797A US 183344 A US183344 A US 183344A US 18334438 A US18334438 A US 18334438A US 2164797 A US2164797 A US 2164797A
Authority
US
United States
Prior art keywords
fuse
chamber
primer
projectile
passage
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
US183344A
Other languages
English (en)
Inventor
Birkigt Marc
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2164797A publication Critical patent/US2164797A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F42C15/24—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by inertia means
    • F42C15/26—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by inertia means using centrifugal force
    • 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
    • F42C1/10—Impact fuzes, i.e. fuzes actuated only by ammunition impact without firing-pin
    • F42C1/12—Impact fuzes, i.e. fuzes actuated only by ammunition impact without firing-pin with delayed action after ignition of fuze
    • 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

Definitions

  • the present invention relates to percussion fuses for projectiles, and it is more especially, although not exclusively, concerned with fuses for shells of small caliber.
  • the chief object of the present invention is to produce a percussion fuse of this kind which is better adapted to meet the requirements of practice than similar fuses used up to this time.
  • the essential feature of the present invention consists in devising such a fuse in a manner such that it includes, on the one hand, at the front part thereof, at least one compression chamber in which the rise of pressure that is to produce the ignition of the fuse primer is to take place, and, on the other hand, in communication with said first chamber, through a throttled passage, at least one other chamber in which said primer can be housed.
  • a closing device capable of protecting temporarily said primer against accidental pressure variations as may occur, said closing device being preferably locked so that it can be brought out of action only when the acceleration of the projectile along its trajectory has had its sign changed.
  • Still another feature of the present invention consists, while providing a fuse of the type above referred to with at least one closing device capa ble of protecting the explosive matters it contains against any accidental percussion actions, in constituting this device by a plurality of elements forming a screen when they are juxtaposed and tending to move away from one another under the action of the centrifugal force,
  • Fig. 1 is an axial sectional view of a percussion fuse made according to a preferred embodiment of the present invention, the parts being in the position they occupy when the projectile has not yet been fired in a gun;
  • Fig. 2 is a View similar to Fig. 1, showing the parts in the position they occupy a short time after the projectile has been fired;
  • the percussion fuse includes the following parts:
  • At the front part at least one compression chamber I in which the pressure rise can take place for ensuring the ignition of the primer 2 of the fuse;
  • the chamber I in which the sudden compression is to take place is obtained by making an axial bore in the body 5 of the fuse.
  • This bore is chamfered at its front part so as to form a sharp edge 6 which facilitates the cutting of a round plug in the obstacle when the latter is struck.
  • this bore is closed at its front part by a thin cap I.
  • I provide, coaxially with hole I and behind it, another hole, which constitutes at least a part of chamber 4 and is prolonged rearwardly by a chamber 8 in which is housed the detonator 9, the primer 2 being fitted in the bottom part of chamber 4 ahead of said detonator.
  • Throttle passage 3 can be provided either directly in the body of the fuse, or, as shown by the drawing, in a part of the safety device which will be hereinafter described.
  • primer 2 located in said chamber will be ignited provided that it is made of a highly sensitive explosive, such for instance as lead,
  • a fuse made as above described is capable of giving very satisfactory results, but I consider that it is preferable to provide it with a safety device capable of protecting as long as necessary the explosive charge against percussion actions.
  • this safety device consists of a screen or the like normally interposed between the nose of the fuse and primer 2, said screen being preferably locked in this position so that it can be brought out of the way only when the sign of the acceleration of the projectile along its trajectory changes, so that the fuse cannot work until the projectile has moved to a certain distance from the muzzle of the gun.
  • the safety means include a plurality of elements forming a screen when they are juxtaposed and tending to move away from one another under the effect of the centrifugal force, these elements being maintained, up to the desired time, by suitable locking means, in their position in which they form the screen.
  • the screen is formed by two semi-circular shutters it and IE having frusto-conical lateral walls.
  • shutters are carried by a kind of ring II, itself applied against a shoulder provided in the body of the fuse, the centralhole of said ring being located opposite throttled passage 3 and being separated from the latter by shutters I0 and I0 when they are juxtaposed along their respective diameters.
  • the locking means consist of a kind of sleeve I2 capable of sliding in chamber I against the action of a spring I3, which urges it against shutters I0 and ID, the lower part of said sleeve, in which throttled passage 3 is provided fitting exactly upon said shutters when the latter are located in adjoining relation.
  • a percussion fuse especially for projectiles of small caliber, comprising a body having a first and a second chamber therein, passage means forming a restricted opening between said chambers, said first, chamber being adjacent the nose of said fuse sothat a Sudden rise of gas pressure occurs in said first chamber when said projectile strikes an object, a primer partially filling said second chamber and spaced from said restricted opening whereby gas compressed in said first chamber emerges as a jet through said restricted opening to impinge upon said primer.
  • a fuse as in claim 1 said chambers being spaced along a common axis, and said restricted opening being coaxial therewith.
  • a fuse as in claim 1 said nose of said fuse being chamfered and providing a cutting edge for the opening into said first chamber, and said chambers being axially aligned.
  • a fuse as in claim 1 a thin cap closing the opening of said first chamber at said nose of said fuse, said cap being adapted to act as a piston upon said gas in said chamber when said projectile strikes an object.
  • a fuse as in claim 1 said restricted opening having a diameter approximately one-half the diameter of said first chamber.
  • safety means for closing the passage means between said chambers comprising a shutter openable under centrifugal force and a movable annular member forming a part of the unrestricted volume of said first chamber for locking said shutter in closed position during positive acceleration of said projectile.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Golf Clubs (AREA)
  • Air Bags (AREA)
  • Fuses (AREA)
US183344A 1937-09-28 1938-01-04 Percussion fuse for projectiles Expired - Lifetime US2164797A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE211956X 1937-09-28

Publications (1)

Publication Number Publication Date
US2164797A true US2164797A (en) 1939-07-04

Family

ID=3865953

Family Applications (1)

Application Number Title Priority Date Filing Date
US183344A Expired - Lifetime US2164797A (en) 1937-09-28 1938-01-04 Percussion fuse for projectiles

Country Status (7)

Country Link
US (1) US2164797A (de)
BE (1) BE423814A (de)
CH (1) CH211956A (de)
DE (1) DE688977C (de)
FR (1) FR844043A (de)
GB (1) GB488909A (de)
NL (1) NL49282C (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2446268A (en) * 1940-12-07 1948-08-03 Mini Of Aircraft Production Fuse for projectiles
US4432283A (en) * 1980-12-11 1984-02-21 Gebruder Junghans Gmbh Projectile fuse responsive to the spinning motion of a projectile
US4449456A (en) * 1981-09-21 1984-05-22 A/S Raufoss Ammunisjonsfabrikker Safety device for a projectile
US20040074411A1 (en) * 2001-03-12 2004-04-22 Detlef Haeselich Igniter with a safety device for a projectile which is shot from a pipe with angular momentum
US20100126740A1 (en) * 2007-04-17 2010-05-27 Marc Hartmann Apparatus for releasing a fluid to the atmosphere
US20150020705A1 (en) * 2007-04-17 2015-01-22 Marc Hartmann Apparatus for releasing fluid to the atmosphere

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7977420B2 (en) 2000-02-23 2011-07-12 Alliant Techsystems Inc. Reactive material compositions, shot shells including reactive materials, and a method of producing same
US20050199323A1 (en) 2004-03-15 2005-09-15 Nielson Daniel B. Reactive material enhanced munition compositions and projectiles containing same
USRE45899E1 (en) 2000-02-23 2016-02-23 Orbital Atk, Inc. Low temperature, extrudable, high density reactive materials
GB2412156B8 (en) * 2004-03-15 2008-07-17 Alliant Techsystems Inc Reactive material enhanced projectiles and relatedmethods
FR2867469A1 (fr) 2004-03-15 2005-09-16 Alliant Techsystems Inc Compositions reactives contenant un metal, et leur procede de production
EP2116807A2 (de) 2005-10-04 2009-11-11 Alliant Techsystems Inc. Mit reaktivem Material erweiterte Projektile und zugehörige Verfahren

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2446268A (en) * 1940-12-07 1948-08-03 Mini Of Aircraft Production Fuse for projectiles
US4432283A (en) * 1980-12-11 1984-02-21 Gebruder Junghans Gmbh Projectile fuse responsive to the spinning motion of a projectile
US4449456A (en) * 1981-09-21 1984-05-22 A/S Raufoss Ammunisjonsfabrikker Safety device for a projectile
US20040074411A1 (en) * 2001-03-12 2004-04-22 Detlef Haeselich Igniter with a safety device for a projectile which is shot from a pipe with angular momentum
US6880464B2 (en) * 2001-03-12 2005-04-19 Nico-Pyrotechnik Hans-Juergen Diederichs Gmbh & Co. Kg Igniter for a projectile which is fired from a barrel with angular momentum
AU2002257524B2 (en) * 2001-03-12 2006-05-18 Nico-Pyrotechnik Hanns-Jurgen Diederichs Gmbh & Co. Kg Igniter with a safety device for a projectile which is shot from a pipe with angular momentum
US20100126740A1 (en) * 2007-04-17 2010-05-27 Marc Hartmann Apparatus for releasing a fluid to the atmosphere
US8800674B2 (en) * 2007-04-17 2014-08-12 Marc Hartmann Apparatus for releasing a fluid to the atmosphere
US20150020705A1 (en) * 2007-04-17 2015-01-22 Marc Hartmann Apparatus for releasing fluid to the atmosphere

Also Published As

Publication number Publication date
DE688977C (de) 1940-03-07
CH211956A (fr) 1940-10-31
GB488909A (en) 1938-07-15
BE423814A (de)
FR844043A (fr) 1939-07-18
NL49282C (de)

Similar Documents

Publication Publication Date Title
US2164797A (en) Percussion fuse for projectiles
US2778310A (en) Safety device for projectiles
GB683484A (en) Ammunition projectile
US2697400A (en) Projectile with shaped charge and point initiating fuze
GB960178A (en) Ammunition projectile
US3944168A (en) Artillery projectile with spreading tail assembly
US2360217A (en) Multicharge gun
US2999461A (en) Impact fuze
US2737888A (en) Projectile equipped with a safety device
US3118379A (en) Fuze for a gyratory projectile
US3345948A (en) Projectile
US2619905A (en) Impact fuse for rocket projectiles
US2402716A (en) Antiaircraft shell
US1512249A (en) Firing mechanism
US2777392A (en) Striker mechanism for a fuse
US3289588A (en) Caliber 50 spotting bullets
US2455603A (en) Fuse
US3289589A (en) Caliber .50 spotting bullets
US1768678A (en) Fuse for trench-mortar projectiles
KR940004649B1 (ko) 폭발탄체를 갖춘 산탄총 카트리지
US1342652A (en) Fuse
US1842467A (en) Point detonating fuse
US1216802A (en) Projectile-fuse.
US1648603A (en) Detonating fuse
US3426683A (en) Star shell