US1666672A - Percussion fuse for projectiles subjected to a rotary movement around their axes during their trajectory - Google Patents

Percussion fuse for projectiles subjected to a rotary movement around their axes during their trajectory Download PDF

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Publication number
US1666672A
US1666672A US114428A US11442826A US1666672A US 1666672 A US1666672 A US 1666672A US 114428 A US114428 A US 114428A US 11442826 A US11442826 A US 11442826A US 1666672 A US1666672 A US 1666672A
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United States
Prior art keywords
fuse
trajectory
projectile
percussion
projectiles
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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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US114428A
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English (en)
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Varaud Andre
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Individual
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Individual
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    • 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
    • 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
    • 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
    • F42C15/20—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
    • 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
    • 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
    • F42C15/295—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids operated by a turbine or a propeller; Mounting means therefor

Definitions

  • the invention refers to percussion fuses for projectiles'subjected to a rotary move ment around their axis during their trajectory.
  • the fuse according to this invention is made to comprise at least one member subjected tolthe action ofthe centrifugal power and laterally projecting from the body .of theufuse and remaining in this position regardless of the resistance of the air during the entire trajectory and which at the end of the latter will provoke an instantaneouspercussion immediately as the least possible resistance displaces it from this projecting position.
  • Fig. l is an elevation showing the fuse provided with its protecting cap.
  • Fig. ,2 is a similar view representing the fuse with its protecting cap taken off.
  • Figs. 3 to 6 are axial longitudinal sections showing the fuse respectively before firing, at the moment of firing,.at the momentwhen the projectile traverses the spires in theicannon, during the trajectory and finally atthe moment of the impact.
  • Figs. 7 8 and 9 are transverse sections respectively on the lines VII-VII of Fig.
  • Figs. lOto 12 are detail views.
  • the fuse is made from three portions, a, b, and c, screwed one into the other.
  • the striker p is mounted axially movable in the axis of the fuse and .is guided by means of a sleeve made in one piece with-the part a.
  • This striker' is normally submitted .to the action'of a percussion spring 7' which is put under tension in the course of manufactureof the fuse and is maintained inthis position until the moment of the impact by means of a swivelling lever m provided at its free end with a portion m having an inclined plane adapted to enter av notch 12 of corresponding shape provided for in the striker 12.
  • this notch with an inclined surface serves on the one hand to prevent each and every axial displacement of the striker in the direction towards the primer when the lever m is in its locking position, and on the other hand is adapted to facilitatethe movement of this lever by the action of the percussion spring 7' as soon as it is freeto the action of the centrifugal power.
  • a locking sleeve 9 is made use of in the circular hollow g of which enters a pin m fixed on tlfe lever m lVhen at rest this sleeve .9 is prevented from any axial displacement by two cylindrical stoppers n or centrifugal safety members which are provided for in diametrically opposed positions and lodged radially with regard to the axis of the fuse.
  • the inner ends of these stoppers come to bear against the periphery of the locking sleeve 9 whilst its other ends rest on the internal portions of lever Z whose function will be explained later on.
  • These diametrically opposed levers Z are arranged in a diametrical slit provided for in the cap I) and are adapted to swing on a pin 9 fixed in the cap 1).
  • Each finger (Z is operated by its lever Z by means of a spring 6 lodged between the shanks Z
  • the part (Z of this finger remains in mesh with acircular groove of the sleeve 9 whilst the notch (Z comes to bear against the free end of spring e.
  • a cylinder 8 will take under the action of the inertia effect the active position shown in Fig. 4: and the levers Z Will, also owing to the inertia effect, remain in their lodging flush with the body I) of the fuse during the whole linear acceleration which exercises a much more powerful action on said levers Z than the angular inertia moment, derived from the rotary movement of the projectile.
  • the levers Z conserve their position according to Fig. f during the entire duration of the passage f the projectilethrough the spiral of the aannon.
  • Percussion fuse for artillery projectiles submitted to a rotary movement around their axes during their trajectory comprising a control member submitted to the action of the centrifugal power in such a manner as to be adapted to become laterally standing out from the body of the fuse and to remain in this standing out position during the whole trajectory, regardless of the action of the resistance of the air, an oscillating memher for locking the striker constituting a lever adapted to swing in a plane perpendicular to the axis of the fuse and which is provided with a pin operating in the bore of a locking sleeve mounted to be axially movable in the direction of the advance of the projectile and concentric with regard to the striker, said sleeve being held in its active position against the action of a percussion spring during the whole trajectory of the. projectile by a device controlled by the displacement of said control member standing out from the body of the fuse during the trajectory of the projectile.
  • Percussion fuse in which a centrifugal safety member is mountcd in a radial slit for immobilizing the said locking sleeve in its active position until the moment in which the projectile leaves the mouth of the cannon, said safety member being adapted to emerge under the action of the centrifugal power through the said radial slit.
  • Percussion fuse according to claim 1, in which a centrifugal safety member is mounted in a radial slit for immobilizing a locking sleeve in its active position until the moment in which the projectile leaves the mouth of the cannon, and in which the control member stands out from the body of the fuse during the trajectory of the projectile and is adapted to hold the said centrifugal safety member in its active position durin the passing of the projectile through the spires of the cannon.
  • Percussion fuse in I Which the control member standing out from the body of the fuse during the trajectory of the projectile is constituted by a lever, a finger being provided which is adapted to become operated by the folding of said lever at the end of the trajectory When it meets an obstacle, in such a manner that a locking sleeve is sufiiciently axially displaced as to allow the liberation of a swiv'elling member locking the striker, a spring being arranged between said finger and the lever in order that upon the projectile leaving the mouth of the cannon, the spreading out of the lever causes the device for putting it under ten sion to be operative.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Percussive Tools And Related Accessories (AREA)
US114428A 1925-06-09 1926-06-08 Percussion fuse for projectiles subjected to a rotary movement around their axes during their trajectory Expired - Lifetime US1666672A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1666672X 1925-06-09

Publications (1)

Publication Number Publication Date
US1666672A true US1666672A (en) 1928-04-17

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Application Number Title Priority Date Filing Date
US114428A Expired - Lifetime US1666672A (en) 1925-06-09 1926-06-08 Percussion fuse for projectiles subjected to a rotary movement around their axes during their trajectory

Country Status (4)

Country Link
US (1) US1666672A (xx)
BE (1) BE335055A (xx)
CH (2) CH119506A (xx)
FR (1) FR619118A (xx)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996009A (en) * 1956-09-14 1961-08-15 Jr William J Donahue Delay arming device
US3906862A (en) * 1974-04-23 1975-09-23 Us Army Buckling protective fuze cap
US3910193A (en) * 1954-02-23 1975-10-07 Us Army Fuse
US4059066A (en) * 1976-05-28 1977-11-22 Reinhold Grassl Mechanical motion sensor
WO2003095933A1 (de) * 2002-05-13 2003-11-20 Ruag Munition Aufschlagzünder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2615610A1 (fr) * 1987-05-21 1988-11-25 France Etat Armement Procede permettant d'augmenter la sensibilite a l'impact d'un projectile portant une fusee percutante

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3910193A (en) * 1954-02-23 1975-10-07 Us Army Fuse
US2996009A (en) * 1956-09-14 1961-08-15 Jr William J Donahue Delay arming device
US3906862A (en) * 1974-04-23 1975-09-23 Us Army Buckling protective fuze cap
US4059066A (en) * 1976-05-28 1977-11-22 Reinhold Grassl Mechanical motion sensor
WO2003095933A1 (de) * 2002-05-13 2003-11-20 Ruag Munition Aufschlagzünder

Also Published As

Publication number Publication date
FR619118A (fr) 1927-03-26
CH123860A (fr) 1927-12-16
BE335055A (xx)
CH119506A (fr) 1927-06-01

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