US2405653A - Fuse for automatic destruction of shells - Google Patents

Fuse for automatic destruction of shells Download PDF

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Publication number
US2405653A
US2405653A US395466A US39546641A US2405653A US 2405653 A US2405653 A US 2405653A US 395466 A US395466 A US 395466A US 39546641 A US39546641 A US 39546641A US 2405653 A US2405653 A US 2405653A
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US
United States
Prior art keywords
fuse
striker
weights
shells
centrifugal
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
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US395466A
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English (en)
Inventor
Honger Guido
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Individual
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Individual
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Publication date
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Publication of US2405653A publication Critical patent/US2405653A/en
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Classifications

    • 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
    • F42C9/14—Double fuzes; Multiple fuzes
    • F42C9/16—Double fuzes; Multiple fuzes for self-destruction of ammunition
    • 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
    • F42C9/00—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
    • F42C9/14—Double fuzes; Multiple fuzes
    • F42C9/16—Double fuzes; Multiple fuzes for self-destruction of ammunition
    • F42C9/18—Double fuzes; Multiple fuzes for self-destruction of ammunition when the spin rate falls below a predetermined limit, e.g. a spring force being stronger than the locking action of a centrifugally-operated lock

Definitions

  • the known fuses have the serious defect that; the critical angular velocity being but little inferior to the initial velocity it is quite possible that this critical value may never be reached, for instance in case of slightly defective propelling charges.
  • the result is a premature explosion of the shell at the instant the linear acceleration vanishes, that is a foot or so from the gun.
  • the present invention has for its object to overcome this inconvenience.
  • a premature explosion which might otherwise result from an insufficient propellent loading is prevented by a special mechanism.
  • the transport safety device can free the other mechanism when and only when the velocity of rotation of the projectile exceeds the just described critical velocity by a definite amount which may be chosen at will.
  • This invention does not impair the desirable qualities of the shells known up to date such as safety in transport, high sensitivity of percussion, ease of manufacture of large quantities, as well as low cost.
  • the figure illustrates an application of the invention to such a fuse.
  • the striker if] is secured. in the known manner by centrifugal weights I I, kept in place by the light pressure of a leaf spring l2; under the pressure of a coil spring [4, a tube l3 locks the centrifugal weights ll; two cylindrical weights l5 with rounded nose are free to move in appropriate radial holes bored in a head l3a of the tube l3.
  • the pressure of the lower end l3b of the tube l3 on the centrifugal weights H is increased so that in spite of the centrifugal forces developed the safeties remain unaltered.
  • centrifugal weights 1 5 begin to act. They press against the slanting surfaces I6 of a sleeve lBa forming a guide for the tube parts I3, l3a and gradually pull the tube I3 forward compressing the coil spring 14, thereby releasing the centrifugal weight I l which move radially owing to the rotation of the projectile and free the striker It. The shell is then armed and it will explode the instant it hits any part of the aircraft.
  • a sensitive percussion fuse for projectiles comprising a fuse body, a detonator therein, a striker having percussion means associated therewith, a tubular member coaxial with and surrounding the striker said member being axially slidable in the fuse body, an internal shoulder on said tubular member, a spring within said tubular member and abutting between said shoulder and the fuse body, centrifugally operated transport safety means normally held by the inner end of said tubular member in position separating said striker from said detonator, means on said tubular member for driving the striker towards said detonator under the action of said spring and having a one-way connection with the striker enabling the striker to move towards the detonator without restraint from said tubular member, a head on said tubular member, centrifugal weights of cylindrical form having rounded ends slidable radially in said head, and an internal conical ramp on the fuse body cooperating with the rounded ends of said weights to produce axial movement of said tubular member, the centri
  • a sensitive percussion fuse for projectiles comprising a fuse body having a cylindrical axial bore therein of uniform diameter, a detonator in said body, a guide sleeve lodged in said bore and having an internal ramp at its outer end, a member with a head having radial cavities therein and a tubular stem both said head and ing a one-way connection with the striker enenabling the striker to move towards the detonator without restraint from said tubular member, centrifugal weights of cylindrical form having rounded ends slidable in said radial cavities with the rounded ends engaging said internal ramp to produce axial movement of said member, the centrifugal action of said weights being predetermined to overcome said spring only above a 10 critical angular velocity of the fuse.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
US395466A 1940-07-09 1941-05-27 Fuse for automatic destruction of shells Expired - Lifetime US2405653A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH551654X 1940-07-09

Publications (1)

Publication Number Publication Date
US2405653A true US2405653A (en) 1946-08-13

Family

ID=4519676

Family Applications (1)

Application Number Title Priority Date Filing Date
US395466A Expired - Lifetime US2405653A (en) 1940-07-09 1941-05-27 Fuse for automatic destruction of shells

Country Status (5)

Country Link
US (1) US2405653A (fr)
BE (1) BE443352A (fr)
DE (1) DE912064C (fr)
FR (1) FR886935A (fr)
GB (1) GB551654A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2493278A (en) * 1945-01-17 1950-01-03 Brevets Aero Mecaniques Combined fuse
US2725011A (en) * 1952-04-04 1955-11-29 James A Sundermann Base self-destruction fuze for ordnance projectiles
US2871788A (en) * 1955-05-24 1959-02-03 Brevets Aero Mecaniques Impact fuzes for explosive projectiles including a mechanical self-destruction device
US2896540A (en) * 1954-12-06 1959-07-28 Voland Andre Control device for the percussion pin of a projectile fuse
US2949856A (en) * 1956-01-24 1960-08-23 Nl Machf Artillerie Inrichteng Fuzes having a self-destructive action
US3033115A (en) * 1958-06-12 1962-05-08 Brevets Aero Mecaniques Nose fuzes of the percussion type including a self-destruction device
US3112704A (en) * 1960-12-23 1963-12-03 Rheinmetall Gmbh Self-destroying fuze for a spinning projectile

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1104396B (de) * 1959-08-20 1961-04-06 Rheinmetall Gmbh Zerlegerzuender mit Maskensicherheit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR779603A (fr) * 1934-04-05 1935-04-10 Anciens Ets Skoda Fusée percutante extra sensible
CH179141A (de) * 1934-10-20 1935-08-31 Lanfranconi Domenico Geschosszünder, der sowohl bei Aufschlag, als auch nach einer bestimmten Flugdauer zündet.
NL47175C (fr) * 1936-11-12

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2493278A (en) * 1945-01-17 1950-01-03 Brevets Aero Mecaniques Combined fuse
US2725011A (en) * 1952-04-04 1955-11-29 James A Sundermann Base self-destruction fuze for ordnance projectiles
US2896540A (en) * 1954-12-06 1959-07-28 Voland Andre Control device for the percussion pin of a projectile fuse
US2871788A (en) * 1955-05-24 1959-02-03 Brevets Aero Mecaniques Impact fuzes for explosive projectiles including a mechanical self-destruction device
US2949856A (en) * 1956-01-24 1960-08-23 Nl Machf Artillerie Inrichteng Fuzes having a self-destructive action
US3033115A (en) * 1958-06-12 1962-05-08 Brevets Aero Mecaniques Nose fuzes of the percussion type including a self-destruction device
US3112704A (en) * 1960-12-23 1963-12-03 Rheinmetall Gmbh Self-destroying fuze for a spinning projectile

Also Published As

Publication number Publication date
BE443352A (fr)
DE912064C (de) 1954-05-24
FR886935A (fr) 1943-10-28
GB551654A (en) 1943-03-04

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