US1643385A - Aeroplane bomb with safety device - Google Patents

Aeroplane bomb with safety device Download PDF

Info

Publication number
US1643385A
US1643385A US172417A US17241727A US1643385A US 1643385 A US1643385 A US 1643385A US 172417 A US172417 A US 172417A US 17241727 A US17241727 A US 17241727A US 1643385 A US1643385 A US 1643385A
Authority
US
United States
Prior art keywords
bomb
propeller
aeroplane
axle
socket
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
US172417A
Other languages
English (en)
Inventor
Lafitte Theodore
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 US1643385A publication Critical patent/US1643385A/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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/46—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing gases, vapours, powders or chemically-reactive substances
    • F42B12/50—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing gases, vapours, powders or chemically-reactive substances by dispersion
    • 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

  • LAFITTE AEROPLANE BOMB WITH SAFETY DEVICE 3 Sheets-Sheet 2 Filed March 3. 1927 7/ xnrenvr' T. LAFITTE AEROPLANE BOMB WITH SAFETY DEVICE Sept. 27, 1927. 1,643,385
  • the present invention relates to an aeroplane bomb of the wing type which is provided with safety devices such that the percussion can take place only when the following four conditions are complied with in the order indicated:
  • ig. 1 is a lengthwise section of the bomb which is cooked and is provided with its protecting cap.
  • Fig. 2 is acorresponding plan view, with the cap removed.
  • FIG. 3 is an elevational view, part1 in section, of the bomb secured below t e aeroplane.
  • Fig. 4 is a cross section on the line 4-4 of Fig. 3.
  • Fig. 5 is a partial lengthwise section of the bomb after it has been unfasoened.
  • Figs. 6 and 7 are like views corres 0nding to the vertical position of the bom and showing the successive action of the safety devices.
  • Fig. 8 is a diagrammatic view showing various positions of the bomb when descend-
  • the bomb essentially comprises a main body 1 consisting of cast iron, steel or the like.
  • a tail piece 2 made of steel, provided with wings or flanges of the normal type .3 and 4 which are connected to ether by the ring 5.
  • a plug 6 carrying the percussion device, which consists of the striker 7 mounted on a socket 8 provided with an internal screw thread, into which is screwed a propeller axle 9 to w 'ch a multiple-blade propeller 10 is riveted and is secured by the screw 11.
  • the bomb is normally attached to the aeroplane by an eye 17 into which is inserted the ar 18 serving to secure the bomb.
  • This eye is pierced with an oblique hole in which is engaged a rod 19 which is urged against the axle 18 by a spring 20; said rod traverses the bomb, at the front part; the other end is engaged between two blades of the propeller of the striker, and is held in this position by the pin 30.
  • said devices comprise the rod 19 and an arm 21 which is mounted on an axle 22 and is urged in a rotary direction about the said axle by the spring 23 for the release of the propeller.
  • the shape of said arm is such that its rear stud 33 is in constant contact with a cam 24 which is pinned to the axle 25 which extends entirely through the body of the bomb. To each end of said axle is pinned a respective pendular mass 26 which is movable in the right and left hand recesses in the head of the bomb, respectively.
  • the vane 27 is rotatable on an axle 28; one side of said vane, which has the form of an angle piece, is constantly held between two blades of the propeller b a calibrated spring; 29.
  • the pin 30 Fig. 1) traverses t e propeller and axle 9, the striker tube 8 and the plug 6, and its end engages in an aperture in the rod 19; the whole device is thus entirely held against rotation and straight motion with reference to the main body of I the bomb
  • the whole is covered by the cap 31 (Fig. 1) for handling and transportation, and the rod 19 is also protected by a cover 32.
  • the bomb is normally attached in the horizontal position below the wings on along the body of the aeroplane (Fig. 3) by the rod 18 inserted through the eye 17.
  • the speed of the bomb increases by the acceleration of gravit so that the air pressure on thevane 27 a so increases. A speed will be attained for which the pressure on the vane 27 will exceed the tensionof the spring 29.
  • the vane then rotates, and when in the position shown in Fig. 7 it will re- .lease the propeller. Since the speed of the bomb increases, or at least remains the same, the vane 27 will remain in this position until it strikes the ground.
  • the propeller 10 is thus free to rotate on llaafter the vane 27 is raised.
  • e propeller blades and the inclination of the screw threads of the members 8 and 9 are such that the propeller 10 and its axle 9 will extend outwardly of the front part of the bomb, and the axle 9 will make contact with the rear parts. of the threads of the member 8, as shown in Fig. 7; the propeller can no longer rotate, and hence no change takes place until the'bomb falls upon the ground, it having been entirely primed and ready to explode. Due to the form employed, to the wings provided in the rear, and to the ring joining the wings, the bomb will always attain. the ground with the point foremost.
  • the device which consists of the members 10, 11, 9, 8 and 7' and which now forms a rigid construction of constant length, willfirst come into contact with the ground; the kinetic ener of the bomb is such that the cap 12 will he crushed by the shockand will allow the oint of the striker to strike against the priming of the detonator 14.
  • the fuse of such bombs is started from the fact that the dropping operations have been performed, and the explosion may then take place at the leastshock, and this is sure to hap en whenthe 'hook'18- has not been removed from the e e 17 the rod 19 cannot be released from t e blades of the propeller 10, so that the latter will not rotate, and any shocks brought upon it will not change its osition.
  • the vane 27 will not release the blades of the and this latter will still be hel
  • the propeller will thus be entirely fastened tion when the bomb is not released from the aeroplane, or if it has not fallen through a suflicient vertical distance and has not at tained a given speed which may be determinedkby the manufacturer.
  • a main body of a bomb which is adapted to be transported upon and thrown by an aeroplane, the combination of a main body of a bomb, wings disposed on the rear part of said main body, a hollow plug screwed to the front part of said main body, a tapped socket slidable in said plug, a striker secured to said socket, a cap'disposed u on said striker, a detonator carrier soldere to said cap, 'a detonator disposed in said carrier, a screw threaded axle engaged in the tapped part of said socket, a propeller mounted on the outer end of said axle, said propeller being adapted to make contact with said plug in the inoperative position and to issue from the said socket under the action of a current of air during the descent of the bomb, said axle and socket being adapted to slide inwardly and to crush the said cap, thereby causing theexplosion of the detonator by the shock of the bomb upon the ground.
  • a bomb which is adapted to be trans ported upon and thrown by an aeroplane, the combination of a main body of a bomb, wings disposed on the rear part of said main body, a hollow plug screwed to the front part of said main body, a .tapped socket slidable in said plug, a striker secured to said socket, a cap disposed upon said striker, a detonator carrier soldered to said cap, a detonator disposedin said carrier, a screwthreaded axle engaged in the tapped part of said socket, a propeller mounted on the outer end of said axle, said ropeller being adapted to make contact witii the said plug in the inoperative position and to issue from the said socket under the action of a current of air during the descent of the bomb, an eye disposed upon the said main bod of the bomb, said eye being apertured an adapted for the insertion of the bar attaching the bomb to the aeroplane and further pierced with an oblique channel for the insertion, through the combination
  • a bomb which is adapted to be transported upon and thrown b an aeroplane, the combination of a main body, a hollow plug screwe to the front part of said main body, a tappedsocket slidable in said plug, a striker secured to said socket, a ca disposed upon said striker, a detonatorcarrier soldered to said cap, a detonator disposedin said carrier, a screwthreaded axle engaged in the tapped part of said socket, a propeller mounted on the outer end of said axle, said propeller being adapted to make contact with the said plug in the inoperative position and to issue from the said socket under the action of a current of air during the descent of the bomb, an arm which is pivotally mounted in a recess formed in the front part of the said body of the bomb, and whose end is adapted for insertion between the propeller blades, a spring mounted on the said arm and adapted to release the arm from the propeller, a nib disposed upon the rear of the said arm,
  • wings disposed on the rear part of said main body, a hollow plug screwed to the front part of said main body, a tappedsocket slidable, in said plug, a striker secured to said socket, a cap disposed'u on said striker, a detonator carrier soldere to said cap, a detonator disposed in said carrier, a screwthreaded axle engaged in the tapped part'of said socket, a propeller mounted on the outer end of said axle, said propeller being adapted to make contact with said plug in the inoperative position and to issue from the said socket under the action of a current of air tween the propeller blades, said s ring yield-.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
US172417A 1926-03-03 1927-03-03 Aeroplane bomb with safety device Expired - Lifetime US1643385A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1643385X 1926-03-03

Publications (1)

Publication Number Publication Date
US1643385A true US1643385A (en) 1927-09-27

Family

ID=9679848

Family Applications (1)

Application Number Title Priority Date Filing Date
US172417A Expired - Lifetime US1643385A (en) 1926-03-03 1927-03-03 Aeroplane bomb with safety device

Country Status (2)

Country Link
US (1) US1643385A (enExample)
FR (1) FR612051A (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558000A (en) * 1946-10-25 1951-06-26 Rabinow Jacob Adjustable arming mechanism
US2586861A (en) * 1946-10-25 1952-02-26 Us Sec War Arming cover for fuses
US5307564A (en) * 1992-12-01 1994-05-03 Schoenberg Frederic D Safety razor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443663B1 (fr) * 1978-08-31 1985-09-06 Matra Perfectionnements aux bombes d'aviation et a leur dispositif d'activation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558000A (en) * 1946-10-25 1951-06-26 Rabinow Jacob Adjustable arming mechanism
US2586861A (en) * 1946-10-25 1952-02-26 Us Sec War Arming cover for fuses
US5307564A (en) * 1992-12-01 1994-05-03 Schoenberg Frederic D Safety razor

Also Published As

Publication number Publication date
FR612051A (enExample) 1926-09-16

Similar Documents

Publication Publication Date Title
US1726325A (en) Percussion fuse for projectiles
US2379203A (en) Projectile
US3635162A (en) Practice bomb
US2155100A (en) Safety device for projectile fuses
US3425353A (en) Arming and safety mechanism for a drag chute retarded bomb
US1077989A (en) Bomb for use in connection with aeroplanes or flying-machines.
US1418606A (en) Aerial torpedo or drop bomb
US2817295A (en) Firing pin for rocket fuze
EP0236552B1 (en) Cluster ammunition grenade with means for spin rate attenuation
US1310053A (en) Edward s
US2915013A (en) Arming device
US2407844A (en) Bomb fuse
US2101082A (en) Fuse
US3749017A (en) Parachute retarding tail assembly for bomb
US3299810A (en) Devices for the control of an aerial bomb operation
US2139665A (en) Aerial bomb
US2442381A (en) Aerochemical device
USH215H (en) Fuze for riot control grenade
US1916244A (en) Fuse for projectiles
US2332670A (en) Aerial bomb
US1234358A (en) Bomb, grenade, and like explosive projectile.
US2984185A (en) Fire bomb fuze
US2396245A (en) Fuse
US1309500A (en) E wildrick
US2594340A (en) Centrifugally armed fuse