US1726325A - Percussion fuse for projectiles - Google Patents

Percussion fuse for projectiles Download PDF

Info

Publication number
US1726325A
US1726325A US278104A US27810428A US1726325A US 1726325 A US1726325 A US 1726325A US 278104 A US278104 A US 278104A US 27810428 A US27810428 A US 27810428A US 1726325 A US1726325 A US 1726325A
Authority
US
United States
Prior art keywords
striker
primer
bolt
fuse
housing
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
US278104A
Other languages
English (en)
Inventor
Varaud Andre
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 US1726325A publication Critical patent/US1726325A/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
    • F42C15/20—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
    • 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
    • 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
    • F42C9/02—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means

Definitions

  • This invention concerns improvements in percussion fuses for projectiles of the kind having a relatively movable percussion pin and primer-carrying member, functioning under the action of inertia, mounted so as to be axially movable within the fuse and normally held apart by centrifugal means, themselves normally locked in operative position by inertia-operated members.
  • Such fuses have been provided with various means, either an antagonistic spring or a pin perpendicularly traversing the percussion pin and the body of the fuse, to prevent untimely action of thepercussion pin on the 1 primer due to the resistance of the air acting on the ppint of the projectile during its trajectory. It is true that there is thus obtained a certain safety of action, but this only at the expense of the sentsitiveness of thefuse held at a certain distance from the primer (up to 3 to 4 millimetres) which removes a,
  • the percussion device (movable slide and striker), even when lightened as much as possible or made of material of a low density such as aluminium or electrum, weighs several grammes and thus possesses large momentum and energy. For a given force, the reaction rearwardly towards the primer is verysmall if the obstacle encountered is of feeble consistency.
  • the object of the present invention is to provide a fuse of the kind in question having great sensitiveness but also being safe in" use;
  • a centrifugal member having rack teeth held engaged until the moment of firing between the striker and primer, in such manner as to prevent untimely movement thereof but to permit during the trajectory progressive movement of the striker towards the primer.
  • the toothed centrifugal member meshes to that and with a wheel train of which the last ample, two forms of construction of the device according to the invention.
  • Fig. 1 is an axial section of the first form of construction in the position for transport
  • Fig. 2 is a transverse section on the line AA Fig. 1. v
  • Fig. 3 is an axial section of this construction in the position for transport showing the train of wheels.
  • Fig. 4 is a plan of the body of the fuse, the head being removed to show the arrangement within thisbody.
  • Fig. 5 is an axial section of the same construction showing the position of the parts on the departure of the shell during the acceleration. the hood and protector being removed.
  • Fig. 6 is also an axial section, showing the fuse on impact.
  • Fig. 7 is an axial section of the second construction in position for transport and having a protective sleeve.
  • Figs. 8 to 10 are axial sections similar to F ig..7 showing the fuse on the departure of the shell, during the. trajectory andon the moment of contact of the striker on the primer at impact.
  • Fig. 11 is a transverse section on the line AA of Fig. 7.
  • Fig. 12 is a plan of the body of the fuse, the head being removed to show the parts detachably mounted in this body.
  • Fig. 13 is a detail sectional view on axes of the clockwork wheels.
  • Figs. 14 to 16 are respectively an axial section, a partial elevation and a plan of a modification, the head being removed.
  • the striker 1 is mounted so as to be axially movable in the percussion-control guide 2, which is itself axially movable in the head 3 of the fuse.
  • This mounting of the striker is adopted to prevent the impulse received, when shocks are produced during handling of the shell either directly or indirectly by inertia, from being transmitted to the striker from the guide 2.
  • a damping spring 4 is housed in the front of the guide 2 so as to bear on a shoulder 5 on the striker and on a plug 6 screwed into the end of the guide.
  • This spring is of a size and diameter such as to offer a sufiiciently large resistance (about 14. to 15 kgs) to compression so as to absorb shocks on the point of the guide 2 either during handling orby inertia on the departure of the shell if, for example, firing is effected in a Wood and the point strikes the branch of a tree.
  • the striker 1 and the inertia plug 26 are held spaced from the primer 7 during transport and on the departure of the projectile by a-radial bolt 8 having rack teeth referred to hereinafter.
  • This bolt has a central longitudinal slot 9 traversed perpendicularly by the point 10 of the striker 1, which normally rests by its shoulder on the bolt 8 as shown in Figs. 1 and 7.
  • the forked extremity of the bolt is bevelled at 11 so as to allow the striker to move propressively and gradually towards the primer, when the bolt is retracted under the action of centrifugal force.
  • the bolt 8 is maintained in the operative position during transport by an inertia pin 12 (Fig. 11) of known form having claws or a spring and provided with a portion engageable in a corresponding transverse hole in the bolt. 1
  • the rack teeth out on the bolt 8 control a train of wheels 13 housed in the body 14 of the fuse by means of a pinion 15 (Figs. 1 to 4 and 11 to 13).
  • the last movable member of the train 13 is an escapement wheel 16 which co-operates with an anchor 17 oscillable about a pivotal axis eccentric-with respect to the axisof the projectile (Figs. 4 and 12).
  • This anchor is slightly out of equilibrium (Fig. 12) so; that one of its arms is pushed,
  • the housing enclosing the train of wheels 13 and the escapement arrangement 16, 17 is in two parts 23, 24 detachably mounted in the body 14 (Figs. 12 and 13).
  • the escapement device 16, 17 then acts as a brake to slow down the radial displacement of the bolt 8 to allow the shell to travel a sufficient distance prior to the striker coming into contact with the primer or detonator.
  • a weak spring 21 is interposed between the slide 2 and the lower part 14 of the body or the plate 23 so as partially to counterbalance the action of the air on the slide 2, thus obviating any risk of the primer being perforated due to the air pressure.
  • the prin'ier-carrying plug 26 operates by inertia in well-known manner.
  • Figs. 14 to 16 show a modification in which the spring 4 and inertia plug 26 are omitted and in which the pin 19, instead of having a loop for removal, is rovided with a tongue 25 fitting in or wel ed (soldered) into a corresponding groove in the body 14 having a loop for pulling off at the moment of firing.
  • a percussion fuse for projectiles comprising in combination a striker, a primer, a housing in which said striker and primer are mounted so as to be movable relatively one to the other, a radial bolt-member normally separating said striker and primer but being slidably mounted in said housing to allow contact thereof during the flight of the projectile, an escapement device driven from and braking the movement of said bolt, said escapement being eccentrically positioned with regard to the fuse axis, and means for preventing movement of said bolt until the departure of the projectile.
  • a percussion fuse for projectiles comprising in combination a striker, a primer, a housing. in which said striker and primer are mounted so as to be movable relatively one to the other a guide in said housing for said striker, a first spring bein interposed between said striker and gui e, a second spring between the housing and the guide, a radial bolt-member normally separating said striker and primer but being slidably mounted in said housing to allow contact thereof during the flight of'the projectile, an escapement device driven from and braking the movementof said bolt, said escapement being eccentrically positioned with regardto the fuse axis, and means for preventing movement of said bolt until the departure of the projectile.
  • a percussion fuse for projectiles comprising in combination a striker, a primer, a housing in which said striker and primer are mounted so as to be movable relatively one to the other, a radial bolt-member normally separating said striker and primer, but being slidably mounted in said housing to allow, contact thereof during the flight of the projectile, an escapement device driven from and braking the movement of said bolt, said escapement being eccentrically positioned with regard to the fuse axis, and comprising an anchor and toothed escapement, said anchor being out of equilibrium, and means for preventing movement of said bolt until the departure of the projectile.
  • a percussion fuse for projectiles comprising in combination a striker, a primer, :1. housing in which said striker and primer are mounted so as to be movable relatively one to the other, a guide in said housing for said striker, a first spring being interposed between said striker and guide, a secondv spring between the housing and the guide, a radial bolt-member normally separating said striker and primer but being slidably mounted in said housing to allow contact thereof during the flight of the projectile, an escapement device driven from and brakingthe movement of said bolt, said escapement being eccentrically positioned with regard to the fuse axis, and comprising an anchor and toothed escapement, said anchor being out of equilibrium, and means for preventing movement of said bolt until the departure of the projectile.
  • a percussion fuse for projectiles comrising in combination a striker, a primer, a housing in which said striker and primer are mounted so as to be movable relatively one to the other, a radial bolt-member normally separating said striker and primer but being slidably mounted in said housing to allow contact thereof during the flight of the projectile, said bolt having a forked and bevelled end in which the striker engages, an escapement device driven from and braking the movement of said bolt, said escapement being eccentrically positioned with regard to the fuse axis, and means for preventing movement of said bolt until the departure of the projectile.
  • a percussion fuse for projectiles comprising in combination a striker, a primer, a housing in which said striker and primer are mounted so as to be movable relatively one to the other, a radial bolt-member normally separating said striker and primer but being slidably mounted in said housing to allow contact thereof during the flight of the projectile, said bolt having a forked and bevelled end in which the striker enga es, an escapement device driven from and braking the movement of said bolt, said escapement being eccentrically positioned with regard to the fuse axis, and comprising an anchor and toothed escapement, said anchor being out of equilibrium, and means for preventing movement of said bolt until the departure of the projectile.
  • a percussion fuse for projectiles comprising in combination a striker, a primer, a housing in which said striker and primer are mounted so as to be movable relatively one to the other, a guide in said housing for said striker, a first spring between the striker and guide, a second spring between the housing and the guide, a radial bolt-member normally separating said striker and primer but being slidably mounted in said housing to allow contact thereof during the flight of the projectile, said bolt having a forked and bevelled portion in which said striker engages, an escapement device driven from and braking the movement of said bolt, said escapement being eecentrically positioned with regard to the fuse axis and comprising an anchor and toothed escapment, said anchor being out of equilibrium, and means for preventing movement of said bolt until the eparture of the projectile.
  • a percussion fuse for projectiles comprising in combination a striker, a primer, a
  • said striker and primer are mounted so as to be movable relatively one to the other; a guide in said housing for said striker, a first spring being interposed between'said striker and guide, a second spring between the housing and the guide, a radialbolt-member normally separating said striker and primer but being slidably mounted in said housing to allow contact thereof during the flight of the projectile, said bolt having a forked and bevelled portion, in which said striker engages, an escapement device driven from and braking the movement of said bolt; said escapement being eccentrically positioned with regard to the fuse axis, and
  • a percussion fuse for projectiles comprising a relatively movable striker and primer, a radial bolt-member normally separating said members but being slidably mounted so as to allow-contact thereof after firing, a train of wheels driven on movement of said bolt to operate an escapement disposed eceentrically of the fuse axis, means for preventing movement of said bolt prior to firing and a housing in the fuse bodyfor said wheel train and escapement device.
  • a percussion fuse for projectiles comprising a relatively movable striker and primer, a radial bolt member normally separating said members but being slidably mounted so as to allow contact thereof after firing, a train of wheels driven on movement of said bolt to operate an escapement disposed eecentr-ically of the fuse axis, said escapement comprisingan anchor and a toothed wheel driven-by said train of wheels, said anchor being out of equilibrium, means for preventing movement of said bolt prior to firing. and a.- housing in the fuse body for said wheel train and escapement device.
  • a percussion fuse for projectiles comprising a relatively movable striker and primer, a radial bolt-member normally separating said members but being slidably" mounted so as to allow contact thereof after firing, said bolt having a forked and bevelled portion in which said striker engages, a train of wheels driven on movement of said bolt to operate an escapement disposed eccentrically of the fuse axis, means for preventing movement of said bolt prior to firing, and a housing in the fuse body for said wheel train and escapement device.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Percussive Tools And Related Accessories (AREA)
US278104A 1927-07-19 1928-05-16 Percussion fuse for projectiles Expired - Lifetime US1726325A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH126843T 1927-07-19

Publications (1)

Publication Number Publication Date
US1726325A true US1726325A (en) 1929-08-27

Family

ID=4566048

Family Applications (1)

Application Number Title Priority Date Filing Date
US278104A Expired - Lifetime US1726325A (en) 1927-07-19 1928-05-16 Percussion fuse for projectiles

Country Status (6)

Country Link
US (1) US1726325A (fr)
CH (1) CH126843A (fr)
DE (1) DE498570C (fr)
FR (1) FR651683A (fr)
GB (1) GB298220A (fr)
NL (1) NL29902C (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421266A (en) * 1937-11-06 1947-05-27 Mefina Sa Fuse for ordnance projectiles or bombs
US2446545A (en) * 1945-04-17 1948-08-10 James F Mecaslin Delay arming device
US2448228A (en) * 1945-05-24 1948-08-31 Borg George W Corp Delay booster arming mechanism
US2452562A (en) * 1944-02-29 1948-11-02 John C Gillette Fuse
US2475730A (en) * 1946-09-03 1949-07-12 Clarence W Wandrey Projectile offset
US2479851A (en) * 1947-05-06 1949-08-23 Borg George W Corp Delayed arming device for projectiles
US2486362A (en) * 1946-11-07 1949-10-25 Us Sec War Acceleration switch
US2531121A (en) * 1944-10-05 1950-11-21 Borg George W Corp Mechanical time fuse
US2709962A (en) * 1952-05-09 1955-06-07 Jr Walter Funk Mortar fuse
US2779287A (en) * 1951-11-01 1957-01-29 Laurence M Andrews Contact fuze
US2789508A (en) * 1953-02-18 1957-04-23 Rove Gene Safety and arming mechanism
US2789507A (en) * 1952-06-14 1957-04-23 Mach Tool Works Oerlikon Fuze for rocket projectiles
US2821925A (en) * 1956-04-16 1958-02-04 Ufa Universal Finanzierungs Au Double-acting percussion fuze provided with a safety device for projectiles
US2870713A (en) * 1955-06-09 1959-01-27 Saloranta Arvo Ensio Fuse for shells
DE1053358B (de) * 1956-04-17 1959-03-19 Ufa Universal Finanzierungs An Aufschlagzuender fuer insbesondere drallose Geschosse mit einem gezahnten Sicherungsschieber
US2912933A (en) * 1944-01-24 1959-11-17 Rabinow Jacob Safety device
US2967483A (en) * 1955-01-31 1961-01-10 Junghans Helmut Shell fuze
US2978984A (en) * 1958-04-10 1961-04-11 Czajkowski Norman Inertia time delay mechanism
US2981192A (en) * 1959-06-19 1961-04-25 Andrew J Grandy Extensible bore safety pin
US3013496A (en) * 1960-09-02 1961-12-19 Harold G Wenig Centrifugal drive means for missile and fuze applications

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020259B (de) * 1954-06-08 1957-11-28 Jean Rosselet Uhrwerksverzoegerung der Zuenderschaerfung
IT8322212V0 (it) * 1983-06-24 1983-06-24 Valsella Meccanotecnica Spa Avvenditore meccanico per mina comandato mediante dispositivo di inciampo.

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421266A (en) * 1937-11-06 1947-05-27 Mefina Sa Fuse for ordnance projectiles or bombs
US2912933A (en) * 1944-01-24 1959-11-17 Rabinow Jacob Safety device
US2452562A (en) * 1944-02-29 1948-11-02 John C Gillette Fuse
US2531121A (en) * 1944-10-05 1950-11-21 Borg George W Corp Mechanical time fuse
US2446545A (en) * 1945-04-17 1948-08-10 James F Mecaslin Delay arming device
US2448228A (en) * 1945-05-24 1948-08-31 Borg George W Corp Delay booster arming mechanism
US2475730A (en) * 1946-09-03 1949-07-12 Clarence W Wandrey Projectile offset
US2486362A (en) * 1946-11-07 1949-10-25 Us Sec War Acceleration switch
US2479851A (en) * 1947-05-06 1949-08-23 Borg George W Corp Delayed arming device for projectiles
US2779287A (en) * 1951-11-01 1957-01-29 Laurence M Andrews Contact fuze
US2709962A (en) * 1952-05-09 1955-06-07 Jr Walter Funk Mortar fuse
US2789507A (en) * 1952-06-14 1957-04-23 Mach Tool Works Oerlikon Fuze for rocket projectiles
US2789508A (en) * 1953-02-18 1957-04-23 Rove Gene Safety and arming mechanism
US2967483A (en) * 1955-01-31 1961-01-10 Junghans Helmut Shell fuze
US2870713A (en) * 1955-06-09 1959-01-27 Saloranta Arvo Ensio Fuse for shells
US2821925A (en) * 1956-04-16 1958-02-04 Ufa Universal Finanzierungs Au Double-acting percussion fuze provided with a safety device for projectiles
DE1053358B (de) * 1956-04-17 1959-03-19 Ufa Universal Finanzierungs An Aufschlagzuender fuer insbesondere drallose Geschosse mit einem gezahnten Sicherungsschieber
US2978984A (en) * 1958-04-10 1961-04-11 Czajkowski Norman Inertia time delay mechanism
US2981192A (en) * 1959-06-19 1961-04-25 Andrew J Grandy Extensible bore safety pin
US3013496A (en) * 1960-09-02 1961-12-19 Harold G Wenig Centrifugal drive means for missile and fuze applications

Also Published As

Publication number Publication date
FR651683A (fr) 1929-02-25
NL29902C (fr)
CH126843A (fr) 1928-08-16
DE498570C (de) 1930-05-28
GB298220A (en) 1929-04-11

Similar Documents

Publication Publication Date Title
US1726325A (en) Percussion fuse for projectiles
GB1218884A (en) Hand-grenade and land mine
US2718850A (en) Clockwork movement for a projectile
US2457254A (en) Delay arming device for fuses
US2825284A (en) Impact fuzes with mechanical retardation
US2094032A (en) Fuse for bombs
US2437001A (en) Hand grenade
GB722214A (en) Improvements in and relating to the construction of hand grenades
GB653547A (en) Improvements relating to ammunition projectile fuzes
US2918869A (en) Gyroscope driving means
US2897760A (en) Safety device
US3102475A (en) Explosive device
US2358647A (en) Hand grenade
US3139828A (en) Inertia responsive fuze
US3347166A (en) Fuse for a missile to be fired by a gun with rifled bore
US1643385A (en) Aeroplane bomb with safety device
US2984185A (en) Fire bomb fuze
FR2053948A5 (en) Safety device for hand grenades
US2943573A (en) Self destruction device
US2128838A (en) Fuse for projectiles
GB944164A (en) Percussion fuze with or without delay mechanism for unrotated projectiles, more especially mortar bombs
US2071350A (en) Fuse
US2900911A (en) Fuze
US2963974A (en) Impact detonating fuze with arming delay
US2452562A (en) Fuse