US1227720A - Time-fuse for explosive projectiles. - Google Patents

Description

W. M. WILHELM & K. RUSHTON.

TIME FUSE FOR EXPLOSIVE PROJECTILES- APPLICATION FILED AUG. 6, 916.

1,227,720. Patented May 29,1917.

t st: Inventors:

- I W y g/W V LMJWTM v r j according to the requirementsat the time UNIT D sTATEsPATENT FFI E WALTER M. WILHELM, or swnnrnmonn, Ann KENNETH nnsn'ron, or winxnvnwoon,

PENNSYLVANIA.

TIME-FUSE ron nxrnoszvn. rRoJEcTILEs.

To all whom it may concern: I Be it known that we, WALTER M. WIL HELM and KENNETH RUsHToN, citizens of the United States, and residing, respectively, at Swarthmore, in the county of Delaware, in the State of Pennsylvania,

' and at Wynnewood, in the county of Mont gomery, in-the' State of Pennsylvania, have invented certain new and useful Improvements in Time-Fuses for Explosive Projectiles, of which the following 1s a specific a the accompany-' tion, reference being had to ing drawing, forming a part hereof;

In time fuses as heretofore constructed, in which the release of the firing-pin at the predetermined time is efl ected by the operation of a clock movement, driven'by vention'to provide means whereby not only" a spring, the --clock movement is mounted on the base of the fuse and is covered by a cap which ismounted 'rotatably "on the; cap are assembled the clock-spring is wound up, being inaccessible after the cap has been applied base; before the base and to the base,

and for the purpose of enabling the instant of explosion to be determined,

of firmg, a coupling is'provided between the cap and the controlling, disk or Wheel which is carried frictionally by the clock movement, so that by rotation of the cap the controlling disk may also be rotated through the desired angle; the coupling between the cap. and the controlling disk is so constructed and arranged that it will be disengaged either through centrifugal action or through the action of inertia at the time when the projectile is discharged from the gun; means are also provided for pre ventmg movement of the clock-train until it is released on As the time be- "tween the assembling of the fuse and its use Vmay sometimes be considerable, the

r'clock-spring may deteriorate or suffer some change through, being kept continuously under tension. It is the object of this inmay the clock-spring remain relaxed until v the time of use and be then put under ten sion, but also the provision of means independent of'th'e. cou lingbetween the cap and the controlling to prevent startlng the clock-train may be avoided. In accordance with the invention the stafi of the l b' ing is provided with a 7 partly the projectile; a cap 6.

other end with a winding pinion'm gearlwhich may be engaged by a win'ding pinion introduced at the time of use of the projectile through an aperture provided for that purpose in the "cap, so that the winding of the spring may take place immediately-before the use of the projectile.

The invention will bemore fully explained herelnafter with reference to the accom- .panying drawing in whichit is illustrated and in which,- w a The figure'is a view, partly in section and in elevation, embodies the invention.

The fuse to which the invention is shown I 1n the drawing-to be applied is substantially of ordinary construction, except as hereinafter indicated, comprising a base 0, adapted to be threaded into the body of. which is mounted rotatably on the base a and covers and pro tects the clock movement which is indicated generally at c; and a l which includes a spring-actuated firing-pin (Z, a-sear -(rand a tri ger-leaf 'j, which is controlled by a contro g disk 9 provided with a releasingnotch 9 carried frictionv ally on the stafl .0 of the clock movement and having'a coupling 72, between itself and,

the (ap I). The clock movement is driven by a spring k in the usual manner, one end of the clock-spring being connected to a winding gear 71:5. The cap 6 is provided at any b" and a pivoted cover 6 for such-aperture, theaperture being so placed as to permit the introduction of a key n provided at one end with a milled head m and at the adapted to engage the winding gear is, and with a centering point 11:, to enter a seat-'0 formed therefor in the frame plate At the time when the fuse is to be used, the cap b is rotated to place the aperture 6 in line with the seat and\the key m is then introduced and the. winding pinion placed in mesh with the winding gear b woundup or indicated on a scale formed either on the 7 base or on the cap carrying" with it through the coupling h,

of a tlm'e'fuse which firing mechamsm' convenient point with an aperture the controlling disk '9 PatentedfMay 29, 1917. Application filed-August 16,1916. seriam o. 115,161. I

whereby the time movementlinav beset so as to bring about the explosion atfthe de-- sired r It will be understood that details of con-.

struction of parts involvedin' the present invention will be varied to: suit" different" conditions of use and that the invention is'not restricted to the particular co'nst1n1c tionshown and described herein;

-We claim as our invention:.

In a time-fuse foranexplosive projectile, the combination of a, base, .a cap rotatable j on the base, a mechanism, and a clock 1 a winding;pinion for engagement with the i winding gear.

This specification signed thisjth day of August A. D1916. i J

1 WALTER M.

- KENNETH RUSHTON.

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