US1893663A

US1893663A - Fuse for bombs

Info

Publication number: US1893663A
Application number: US136659A
Authority: US
Inventors: David L Woodberry
Original assignee: SECRETARY OF WAR OF UNITED
Current assignee: SECRETARY OF WAR OF UNITED; SECRETARY OF WAR OF United States,
Priority date: 1926-09-20
Filing date: 1926-09-20
Publication date: 1933-01-10
Anticipated expiration: 1950-01-10

Description

g L/Vu'dh'errg D. l.. WOODBERRY FUbE FOR BOMBS Filed Sept. 20, 1926 w QN/A' Jan. 10

Jan. 30, i933. D. 1 WOODBERRY 1,893,663

FUb' E FOR BOMBS Filed Sept. 20, 1926 Z Sheets-Sheet 2 I' m ////////M l Patented Idan.. 10, 1933 narran stares metete earanr @aerea DAVID L. WOODBERRY, 0F BALTIMORE, MARYLAND, ASSIGOR T0 SECRETARY 0F WAR OF THE UNITED STATES 0F AMERICA FUSE FOR IBGMBS Application led September 20, 1926. Serial No. 136,659.

' (GRANTED UNDER THE ACT 0F MARCH 3, 1883, AS AMENDED .APRIL 30, 1928; 370 0. Gl 757) The invention described herein may be manufactured and used by or for the Government for governmental purposes without the payment to me of any royalty thereon.

The subject of this invention is a fuse for bombs.

Bombs launched from. low flying aeroplanes usually strike the ground before straightening out and in order to insure functioning I propose to include in the fuse a novel form of firing mechanism of the type which operates irrespective of the angle of impact.

The invention is characterized chieiiy by the employment of a tiltable carrier in which are arranged the cam striker normally holding a primer detonator carrier in unarmed position out of line with a booster.

Provision is made in the nose fuse so that in case of head on impact where delay incident to an inertia element is not desirable I may employ an impact plate which will actuate the striker before the bomb is retardeth The invention also contemplates novel means for guiding the detonator carrier in its movement to armed position and then locking it in that position.

With these and other objects in view which Will appear as the description proceeds, my invention resides in the novel arrangement and combination of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made Within the scope of what is claimed without departing from the spirit of the invention.

A practical embodiment of the invention is illustrated in the accompanying drawings, wherein: i

Fig. 1 is a longitudinal sectional view of a nose fuse constructed in accordance with the invention;

Fig. 2 is a plan view thereof;

Fig. 3 is a sectional view on the line 3 3 of Fig. 4;

Fig. 4 is a sectional view on the line 4-4 of Fig. 3;

Fig. 5 is a longitudinal sectional view showing the application of the invention to a tail fuse;

Fig. 6 is an enlarged fragmentary sectional view of the carrier;

Fig. 7 is a sectional view on the line 7-7 of Fig. 3.

Referring to the drawings by 'numerals of reference:

The fuse shown in Fig. 1 comprises a casing or body 6 formed with a tubular extension 7 to the open end of which is secured a ring 8 having an inturned flange constituting a seat 9. lVithn the extension and resting on the seat is a tapered carrier 10, its base slightly spaced from the extension and formed with a beveled rim 11 as a provision to allow it When armed to be tilted out of axial alinement with the fuse.

Mounted transversely in the carrier 10 is a primer detonator carrier consisting of a cylindrical bolt 12 normally held in unarmed posi- `tion with the primer 13 and detonator 14 out ot' line with the booster charge 15 in the base oi the carrier by means of the striker 16. The striker for convenience is made in two parts, a cylindrical body 17 and a fixed firing 'pin 18 which is the element engageable with the bolt to hold it against the action of the springs 19. The striker body is mounted in the open upper end ot the carrier and is held therein against the action of the spring 2O by a release member 21 Which in turn is held by a spindle 22 forming part of a vane unit 23 which revolves in a Well known manner during flight of the bomb to unthread the spindle from the fuse. When the striker is thus held by the release member 21, the carrier 10 which houses the striker is not capable of being tilted, and the striker in turn holds the bolt in the unarmed position so that functioning of the fuse is positively prevented until the release member is freed during flight of the bomb.

Upon removal from the carrier 10 of the release member 21 which in the nose fuse illustrated in Fig. lis only capable of limited movement, the striker is partially extruded from the carrier (as indicated in dotted lines) under the influence of its spring withdrawing the tiring pin 18 from engagement with the bolt and coming to rest with its cam face 17 a in engagement with a cam seat 24 which may be formed on the release member 2l as shown or it may equally as well be provided in the fuse body 6. This constitutes the armed postion of the fuse, the carrier being free to tilt and the bolt 12 being held in place by a plunger 25 which enters a recess 26 in the bolt. This plunger also serves to uide the bolt in its movement and hold it agalnst rotation to insure axial alinement of the primer detonator and to this end, (see F ig. 7 it may ride in a groove 27 in the bolt.

In case of vertical impact, the striker or the carrier will be moved towards its complementary member in the usual manner to detonate the fuse, but in the case of lateral impact, the carrier 1.0 will be tilted due to its inertia and the striker which is mounted therein will be cammed inward by the seat 24 causing the firing pin to set off the primer.

The provision in case of head-on impact for functioning the fuse before the bomb is retarded or comes to rest comprises an impact plate 28 formed with an annular flange 29 which is held against a. shoulder 30 on, the fuse body by a spring 31. The plate serves to limit the extent of movement of the release member 21 on removal of the vane u-nit and on impact it drives the release member inwardly to actuate the striker. The plate/28 which threadedly receives the spindle 22 is held against rotation by means of a pin 32 carried in the fuse body and extending into a groove 33 in the plate.

In the tail fuse shown in Fig. 5, the carrier and its arrangement is substantially similar to that described. In this form the plunger 34a of the striker 34 is directly held by the spindle 35 and as previously suggested the cam seat 36 is formed in the usc body.` A safety pin 37 serving an obvious purpose is removed when fusing the bomb.

In the case of vertical head-on impact of the bomb, the inertia of the plunger 34a carrying the striker Will cause the striker t-o be driven home.

I claim:

1. A fuse including a body, a tiltable cari rier in the body, a booster charge in the base portion thereof, a bolt movable transversely of thecarrier, a primer detonator in the bolt, a striker having a cam face movably mounted in an open end of the carrier and engageable with the bolt to hold it in unarmed position, a spring for moving the striker to release the bolt, a release member having a cam seat movable axially of the body for holding the striker in place, means removable during iii ht for holdin the release member and an axially movable 1m act plate for limiting outward movement o the release mem.

ber and for moving said member inwardly on impact.

2. A fuse 'including a body, a tiltable carrier in the body, a bolt movable transversely of the carrier, a primer detonator in the bolt a striker having a cam face movably mounted in an open end of the carrier and engageable with the bolt to hold it in unarmed position, a spring for movin the striker to release the bolt, a release mem er movable axially of the body for holding the striker in place, means removable during flight for holding the release member and an axially movable im act plate for limiting outward movement o the release member and for moving said member inwardly on impact and a cam seat in which the striker rests when released.

3. A fuse includin a body, a tiltable carrier in the body, a bo t movable transversely o f the carrier, a primer in the bolt, a cam headed striker movably mounted in an open end of the carrier and engageable with the bolt to hold it in unarmed position, a spring for moving the striker artially out of the carrier, a member opera le during flight for releasably, holdingthe striker in place, an impact plate for limiting outward movement of the release member and for moving said member inwardly on impact and a cam seat in which the striker rests when released.

4. A fuse including a body, a tiltable carrier in the body, a bolt movable transversely of the carrier, a primer in the bolt, a cam headed striker movably mounted in an open end of the carrier and engageable with the bolt to hold it in unarmed position, a spring for moving the striker partially out of the carrier, a member operable during flight for releasably holding the striker in place and a cam seat in which the striker rests when re- DAVID L. WOODBERRY.

' leased.

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