US1916244A

US1916244A - Fuse for projectiles

Info

Publication number: US1916244A
Application number: US136660A
Authority: US
Inventors: David L Woodberry
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-09-20
Filing date: 1926-09-20
Publication date: 1933-07-04
Anticipated expiration: 1950-07-04

Description

July 4, 1933- D. 1.. WOODBERVRY FUSE FOR PROJEGTILES Filed Sept. 20, 1926 2 Sheets-Sheet l D. L. WOODBERRY FUSE FOR PROJECTILES July 4, 1933.

Filed Sept. 20. 1926 2 Sheets-Sheet 2 D- L-Wnu dher'r:g

Patented July 4, 1933 UNITED STATE S PATENT OFFICE DAVID L. WOODBERR Y, F BALTIMORE, D, ASSIGNOR TO SECRETARY OF WAR OF THE UNITED STATES OF AMERICA FUSE FOR PROJECTILES Application filed. September 20, 1926. 2 Serial 1%. 136,660.

(GRANTED UNDER THE 'ACT OF MARCH 3, 1883, AS AMENDED APRIL 30', 1928; 370 DIG. 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 projectiles. o

In artillery and bombing operations the nature and character of the target together with the object to be obtained controls the type of fuse employed. Because of the different actions which must be provided for it is obviously of considerable advantage and convenience, both in fabrication and distribution, to combine in a single fuse elements varying conditions.

According to the present invention the fuse is provided with a plurality of powder trains to produce instantaneous and varying delay actions when functioned by a single firing pin whose position with respect to the powder trains may be readily adjusted.

With these and otherobjects 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 9 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:

Fig. 1 is a longitudinal sectional view of I a tail fuse for bombs embodying the principles of the invention; Fig. 2 is a fragmentary view in side elevation thereof;

, Fig. 3 is a sectional view on the line 3-3 of Fig. 1;

Fig. 4 is a longitudinal sectional view of a 45 nose fuse;

F ig. 5 is a'view partly in elevation and v partly'in longitudinal section at right angles to Fig. 4; and.

Fig. 6 is a sectional view on the line 6-6 an e. i

which may be selectively functioned to meet reference:

The fuse shown in Fig. 1 comprises a cylindrical body 6 formed centrally with an apertured seat 7: Mounted on the seat equidistant from the axis of the body' are aplurality of

powder trains

8a, 8b, 8c, 8d, including primers and respectively affording instantaneous action and" delay intervals of .1 second, 1.2 seconds, and 15 seconds. 1 The inner end of the body receives in order :1 block 9 and container 10 in which is a booster charge 11. Mounted for slidable movement in the block perpendicular to the axis of the fuse is a cylindrical bolt 12 containing a detonating charge 13 ignitable from the common relay charge 86. The bolt is normally held in unarmed position by means of a rod 14 positioned axially of the fuse and withdrawable during flight ofthe bomb as will be described hereinafter. W hen the rod is withdrawn from engagement with the bolt, the bolt is urged to armed positionby springs 15 (Fig. 6) where it is securely held by a spring pressed pin 16 (Fig. 5) mounted in the block-9 and also serving to guide the bolt in its transverse movement. Rota-tably mounted in the outer end of the body 6 is a fuse head 17 held against longitudinal displacement by being engaged on both sides of the seat 7. the under side of the seat 7 is effected by means of an attachable nut 17a. Housed within this fuse head is a plunger 18 carrying a fixed firing pin 19 whose point is dis posed in an aperture in the head and is held clear of the powder train when the plunger is' armed by the usual plunger spring 20. The plunger is constrained to be rotated in unison with the fuse head by means of a pin 21 fixed in the head anddisposed in a longitudinal groove 22 in the plunger. This pin is pro vided to prevent distortion of the firing pin during rotation of the fuse head and plunger.

ngagement with ng to the position trains and to a position of s'afety. In order that the position of the firing pin may be known, the fuse head 17 is provided with appropriate inscriptions 24 readable against a fixed index mark 25 on the body.

The rod 14 which is provided for holding the bolt 12 in unarmed position is threaded to the fuse head and also to the plunger 18 thereby serving to hold the plunger in unarmed or immovable position. The outer end of the rod carries a vane assembly 26 'functioning in the usual manner during flight of the bomb to unthread the rod thus arming both the bolt 12 and the plunger 18.

As a means of firmly securing and closing the rear cap 27 of the bomb, there is provided an elongated tubular member 28 fixed to the fuse head and formed with a collar 29 engag ing the cap when the fuse is. in place. I

In the application of the invention to the nose fuse shown in Figs. 4, 5, and-6 the same arrangement of members is substantially retained. In place of the plunger 18 in the delay fuse, there is provided an axially movable impact plate 30 and a spring 31 for maintaining the plate against air pressure when armed in spaced relation to the head 17 a. The plate is held against rotation with respect to the fuse body 32 by means of a pin 33 somewhat similar to and positioned opposite with respect to the firing pin 34. The release rod constituting the spindle of the vane assembly consists of an upper portion 35 threaded to the plate and a lower portion 36 thraded to thehead. The spindle separates when the upper portion is clear of the plate, the lower portion in the meantime releasing the bolt and serving before separation to positively hold the impact plate and resist its tendency to move inwardly during unthreading of the vane assembly. The tendency of v the impact plate to move outwardly during this action is resisted by the pin 33which is provided with a flangedghead 33a engageable' with the fuse head.

I claim:

1. A fuse including a body, a plurality of powder trains arranged in the body and adapted to aflord varying burning intervals, a plunger disposed over. the powder trains, a plunger spring, a firing pin carried by the plunger, means for selectively setting the firing pin to strike one of the powder trains on impact, means whereby the firing pin may be held in set position and means removable during flight for arming the plunger.

- 2. A fuse including a body, a plurality of powder trains arranged in the body and adapted to afford varying burning intervals, a plunger disposed over the powder trains,- a plunger spring, a firin pin carried by'the plunger, means for selectively setting the firin the body, a plunger including a firing pin disposed on one side of the powder train, a plunger spring, a transversely slidable bolt including an explosive element disposed on the other side of the train and means for nor- Jnally holding the plunger and bolt in anarmed position, said means removable during flight to arm both plunger and the bolt.

' 4. A fuse for bombs including a head, an impact plate mounted for longitudinal movement with respect to the head, a spring for maintaining the plate against air pressure in spaced relation to the head when the fuse is armed and means axially removable during flight for holding the impact plate against inward movement counter to the action of said spring. I a

5. A fuse for bombs including a head, an impact plate axially movable with respect to the head when armed, means for holding-the plate against rotation, a vane assembly having a separable spindle, one portion threaded in the plate and the otherportion in the head, the portion in the plate unthreadable therefrom during flight and removable from the fuse to arm the plate.

6. A fuse forbombs including a head, an impact plate axially movable with respect to the head when armed, means for holding the plate a ai-nst rotation, a vane assembly unthreada le from the plate during flight to arm the plate and means associated with the vane assembly for resisting inward movement of the plate during unthreading of the vane assembly.

7. A fuse for bombs including a head, an impact plate axially movable with respect to the head'when armed, means for holdingthe plate against rotatio a vaneassembly unthreadable from the plate during flight to arm the plate and means for resisting inward movement of the plate during unthreading of the vane assembly.

8. A fuse for bombs including a head, an impact plate axially movable with respect to the head when armed, means for holding the plate against rotation, a vane assembly unthreadable from the plate during flight to arm the plate and means for supporting the plate against axial movement during unthreading of the vane assembly.

9. Afuse for bombs including a head, an impact plate axially movable with respect to the head when armed, means for holding the plate against rotation, and means threaded to the head and plate, said means unthreadable from the plate during flight and adapted to support said plate while unthreading.

DAVID L. WOODBERRY.