US2243621A - Percussion fuse for projectiles - Google Patents

Percussion fuse for projectiles Download PDF

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Publication number
US2243621A
US2243621A US181968A US18196837A US2243621A US 2243621 A US2243621 A US 2243621A US 181968 A US181968 A US 181968A US 18196837 A US18196837 A US 18196837A US 2243621 A US2243621 A US 2243621A
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US
United States
Prior art keywords
blocking element
sleeve
members
firing
fuse
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
US181968A
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English (en)
Inventor
Denoix Paul Emile Joseph
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.)
SAGEB SA
Original Assignee
SAGEB 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 SAGEB SA filed Critical SAGEB SA
Application granted granted Critical
Publication of US2243621A publication Critical patent/US2243621A/en
Anticipated expiration legal-status Critical
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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
    • F42C15/24—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
    • 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
    • F42C15/28—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids
    • F42C15/285—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids stored within the fuze housing

Definitions

  • This invention relates to a percussion fuse, for projectiles of all kinds, which is adapted to function irrespective of the position in which the projectile strikes its objective.
  • Fuses of the type in which the firing members, striker and primer, are held apart by one or more blocking elements, in frail equilibrium, and are dislodged by the shock of the impact are already known.
  • the present invention provides a fuse of the foregoing type, which is characterised in that, when in safety position, the blocking elements are immobilised by a bolt device and the eiiacing movement of the bolt, after the shot has been fired, is checked by a plunger, or dash-pot device.
  • This arrangement enables the setting of the fuse in operation to be deferred until the projectile has reached a certain point on its trajectory, thereby precluding any risk of premature percussion in the vicinity of the weapon through encountering unforeseen obstacles, such as branches of trees, camoufiaging devices, parapets and the like.
  • the plunger device itself is blocked in the safety position by a blocking system comprising restraining members which are held in engagement by means of a ring controlled by a spring which, at the'same time, serves to actuate the plunger.
  • the striker (or the carrier of the primer) is blocked in safety position by a device comprising a socket which is held in contact with the blocking device by a spring which serves to displace said socket in order to free the striker (or the primer carrier) after the blocking devices have been moved away.
  • Fig. 1 is an axial section of the fuse in neutral position
  • Figs. 2, 3 and 4 are similar views showing, respectively, the positions assumed by the parts, on firing the shot, after the setting of the fuse, and on impact.
  • the fuse comprises a body I, in the bore la, of which is mounted tive position.
  • a percussion device comprising a striker 3, which is impelled, in the direction of a primer 4, by a spring 5 which bears against the bottom 6 of a socket l and is blocked in safety or operative position by balls 8, or equivalent blocking devices, which are themselves held in engagement, over at least one half of their perimeter, with a recess in the striker 3, by a socket 9 which a spring in tends to force out of the blocking or opera-
  • This spring I0 is neutralised by one or more balls II, or equivalent blocking elements, interposed between a projection 12 from the socket 9, and a corre sponding projection l3 on the head I l of a plug !5 firmly mounted on the fuse body I.
  • the balls i i are retained in the operative position shown in Fig. l by a bolt device comprising a double sleeve l5, which surrounds them and is adapted to slide, under slight friction, in a bore la of the body I.
  • Said sleeve is restrained by balls H, or equivalent means, which engage simultaneously with the balls II and with perforations l8 in the sleeve 16.
  • These perforations i8 preferably slope downwards, so as to allow the balls ll to pass away from the perforations when the shot is fired.
  • the balls IT (or other locking means) are held in operative position by means of a ring I9, pressed by a spring 20 and comprising, near its front end 2!, a flange 22 serving to guide it in the sleeve It.
  • the spring in and the bottom 6 of the sockets l are omitted and the percussion spring 5 is employed to impel the member 9 forwards at the moment of impact. It is, however, preferable to provide two independent springs 5 and ID in order to be able to adjust the force of each, to the individual task it has to perform.
  • the fuse functions in the following manner:
  • the spring 20 repels the ring l9 and balls I l forwards, these latter being prevented from re-entering their seatings by the extremity 2
  • the spring 20 tends to move this latter forward.
  • This movement is checked by the resistance offered by the air, or other fluid, contained in the space 23 and which can only gradually escape through the very small clearance between the outer walls of the double sleeve l6 and the bore la, the mode of operation being analogous to that of a plunger or dash-pot.
  • a percussion fuse for priming projectiles regardless of the direction of impact comprising only two firing members, a percussion spring for urging one of said firing members toward the other, means for holding said firing members apart up to the moment of impact and including at least one blocking element disposed in frail equilibrium whereby impact by shocks in any one of a multiplicity of directions will dislodge the said blocking element, a sleeve engageable with said blocking element for maintaining the blocking element in a position holding said firing members apart, means for maintaining said sleeve in engagement with said blocking element and including shiftable means for releasing said sleeve and for moving said sleeve away from engagement with said blocking element after firing of the shot, and pneumatic means operable upon movement of the sleeve away from the blocking element to delay movement of the said sleeve whereby to prevent premature ignition of the fuse.
  • a percussion fuse for priming projectiles regardless of the direction of impact comprising only two firing members, a percussion spring for urging one of said firing members toward the other, means for holding said firing members apart up to the moment of impact and including at least one blocking element disposed in frail equilibrium whereby impact by shocks in any one of a multiplicity of directions will dislodge the said blocking element, a sleeve engageable with said blocking element for maintaining the blocking element in a position holding said firing members apart, retaining members for holding said sleeve in engagement with said blocking element, a ring member engageable with said retaining members for holding the said retaining members in engagement with said sleeve, a spring for holding said ring member in engagement with said retaining members and compressible after firin of the shot to release said retaining members and to move said sleeve away from engagement with said blocking element, and pneumatic means operable upon movement of the sleeve away from the blocking element to delay movement of the said sleeve whereby to prevent premature
  • a percussion fuse for priming projectiles regardless of the direction of impact comprising only two firing members, a percussion spring for urging one of said firing members toward the other, means for holding said firing members apart up to the moment of impact and including at least one blocking element disposed in frail equilibrium whereby impact by shocks in any one of a multiplicity of directions will dislodge the said blocking element, a sleeve engageable with said blocking element for maintaining the blocking element in a position holding said firing members apart, retaining members engageable with said sleeve and with said blocking element for holding said sleeve in engagement with the said blocking element, a ring member engageable with said retaining members for holding the said retaining members in engagement with said sleeve and with said blocking element, a spring for holdin said ring member in engagement with said retaining members and compressible after firing of the shot to release said retaining members and to move said sleeve away from engagement with said blocking element, and pneumatic means operable upon movement of the sleeve away from
  • a percussion fuse for priming projectiles regardless of the direction of impact comprising only two firing members, a percussion spring for urging one of said firing members toward the other, locking means for holding said firing members apart and including latching members engaging one of said firing members, a socket member engaging said latching members to maintain the said latching members in engagement with said firing member, means for holding said socket member in engagement with said latching members and including at least one blocking element disposed in frail equilibrium whereby impact by shocks in any one of a multiplicity of directions will dislodge the said blocking element and release said socket member, a sleeve engageable with said blocking element for maintaining the blocking element in a position holding said socket member in engagement with said latching members, means for maintaining said sleeve in engagement with said blocking element and including shiftable means for releasing said sleeve and for moving said sleeve away from engagement with said blocking element,
  • said percussion spring serving to release said latching members from engagement with one of the firing members when moved toward the other firing member
  • pneumatic means operable upon movement of the said sleeve whereby to prevent premature ignition of the fuse.
  • a percussion fuse for priming projectiles regardless of the direction of impact comprising only two firing members, a percussion spring for urging one of said firing members toward the other, locking means for holding said firing members apart and including latching members engaging one of said firing members, a socket member engaging said latching members to maintain the said latching members in engagement with said firing member, means for holding said socket member in engagement with said latching members and including at least one blocking element disposed in frail equilibrium whereby impact by shocks in any one of a multiplicity of directions will dislodge the said blocking element and release said socket member, a sleeve engageable with said blocking element for maintaining the blocking element in a position holding said socket member in engagement with said latching members and releasable after firing of the shot, means for moving said sleeve away from said blocking element after firing of the shot, pneumatic means operable upon movement of the sleeve away from the blocking element to delay movement of the said sleeve whereby to prevent premature ignition of the fuse, and a second spring operable

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Toys (AREA)
  • Percussive Tools And Related Accessories (AREA)
US181968A 1936-12-31 1937-12-27 Percussion fuse for projectiles Expired - Lifetime US2243621A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH490196X 1936-12-31

Publications (1)

Publication Number Publication Date
US2243621A true US2243621A (en) 1941-05-27

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ID=4516581

Family Applications (1)

Application Number Title Priority Date Filing Date
US181968A Expired - Lifetime US2243621A (en) 1936-12-31 1937-12-27 Percussion fuse for projectiles

Country Status (7)

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US (1) US2243621A (en))
BE (1) BE425478A (en))
CH (1) CH195689A (en))
DE (1) DE698264C (en))
FR (1) FR831491A (en))
GB (1) GB490196A (en))
NL (1) NL47420C (en))

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714353A (en) * 1950-01-20 1955-08-02 Howard W Greer Time-impact fuse for hand grenades
US2748706A (en) * 1951-10-31 1956-06-05 Arthur P Field Mechanical fuse for grenades
US2779276A (en) * 1946-03-13 1957-01-29 Jr Frank A Clary Demolition firing device
US2850979A (en) * 1954-04-19 1958-09-09 Magnavox Co Time delay control means
US2872868A (en) * 1955-07-11 1959-02-10 Jr William J Donahue Missile nose fuze
US2873680A (en) * 1954-05-19 1959-02-17 Magnavox Co Means for initiation of detonator
US2873677A (en) * 1951-12-21 1959-02-17 John A Taylor Concrete piercing fuse
US3015276A (en) * 1957-09-03 1962-01-02 Surtees Benjamin John Fuze mechanisms
US3636880A (en) * 1968-12-13 1972-01-25 Honeywell Inc Control apparatus
US3814018A (en) * 1970-04-22 1974-06-04 France Etat Safety device for percussion fuse
US3974350A (en) * 1974-07-24 1976-08-10 Breed Corporation Gas damped vehicular crash sensor with gas being dominant biasing force on sensor
US4316414A (en) * 1979-11-09 1982-02-23 Dayron Corporation Fuze
US4421031A (en) * 1981-05-01 1983-12-20 Pocal Industries, Inc. Percussion fuse for training projectiles
US5932392A (en) * 1996-10-07 1999-08-03 Konica Corporation Image forming material and image forming method
WO2002033344A1 (fr) * 2000-10-19 2002-04-25 Atmostat Etudes Et Recherches Dispositif a securite passive levee par une acceleration
EP1357159A2 (en) 2002-04-24 2003-10-29 Toshiba Tec Kabushiki Kaisha Liquid ink and recording apparatus
US20080041262A1 (en) * 2006-08-02 2008-02-21 Rastegar Jahangir S Mechanical delay mechanisms for inertial igniters for thermal batteries and the like
US20080110365A1 (en) * 2006-11-15 2008-05-15 Rastegar Jahangir S Axially compact mechanical igniter for thermal batteries and the like
US20090151585A1 (en) * 2007-12-15 2009-06-18 Junghans Microtec Gmbh Safety and Arming Unit for a Fuze of a Projectile

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2779276A (en) * 1946-03-13 1957-01-29 Jr Frank A Clary Demolition firing device
US2714353A (en) * 1950-01-20 1955-08-02 Howard W Greer Time-impact fuse for hand grenades
US2748706A (en) * 1951-10-31 1956-06-05 Arthur P Field Mechanical fuse for grenades
US2873677A (en) * 1951-12-21 1959-02-17 John A Taylor Concrete piercing fuse
US2850979A (en) * 1954-04-19 1958-09-09 Magnavox Co Time delay control means
US2873680A (en) * 1954-05-19 1959-02-17 Magnavox Co Means for initiation of detonator
US2872868A (en) * 1955-07-11 1959-02-10 Jr William J Donahue Missile nose fuze
US3015276A (en) * 1957-09-03 1962-01-02 Surtees Benjamin John Fuze mechanisms
US3636880A (en) * 1968-12-13 1972-01-25 Honeywell Inc Control apparatus
US3814018A (en) * 1970-04-22 1974-06-04 France Etat Safety device for percussion fuse
US3974350A (en) * 1974-07-24 1976-08-10 Breed Corporation Gas damped vehicular crash sensor with gas being dominant biasing force on sensor
US4316414A (en) * 1979-11-09 1982-02-23 Dayron Corporation Fuze
US4421031A (en) * 1981-05-01 1983-12-20 Pocal Industries, Inc. Percussion fuse for training projectiles
US5932392A (en) * 1996-10-07 1999-08-03 Konica Corporation Image forming material and image forming method
WO2002033344A1 (fr) * 2000-10-19 2002-04-25 Atmostat Etudes Et Recherches Dispositif a securite passive levee par une acceleration
FR2815659A1 (fr) * 2000-10-19 2002-04-26 Atmostat Etudes Et Rech S Dispositif a securite passive levee par une acceleration
EP1357159A2 (en) 2002-04-24 2003-10-29 Toshiba Tec Kabushiki Kaisha Liquid ink and recording apparatus
US20080041262A1 (en) * 2006-08-02 2008-02-21 Rastegar Jahangir S Mechanical delay mechanisms for inertial igniters for thermal batteries and the like
US7587980B2 (en) * 2006-08-02 2009-09-15 Omnitek Partners Llc Mechanical delay mechanisms for inertial igniters for thermal batteries and the like
US20080110365A1 (en) * 2006-11-15 2008-05-15 Rastegar Jahangir S Axially compact mechanical igniter for thermal batteries and the like
US7437995B2 (en) * 2006-11-15 2008-10-21 Omnitek Partners Llc Axially compact mechanical igniter for thermal batteries and the like
US20090151585A1 (en) * 2007-12-15 2009-06-18 Junghans Microtec Gmbh Safety and Arming Unit for a Fuze of a Projectile
US7980179B2 (en) * 2007-12-15 2011-07-19 Junghans Microtec Gmbh Safety and arming unit for a fuze of a projectile

Also Published As

Publication number Publication date
CH195689A (fr) 1938-02-15
BE425478A (en))
FR831491A (fr) 1938-09-05
NL47420C (en))
GB490196A (en) 1938-08-10
DE698264C (de) 1940-11-06

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