US1319635A

US1319635A - Time-fuse for

Info

Publication number: US1319635A
Authority: US
Publication date: 1919-10-21
Anticipated expiration: 1936-10-21

Description

S. WILEY, In.

TIME FUSE FOR AERO BOMBS.

APPLICATION min mm1. 1919.

Patented Oct. 21, 1919.

2 SHEETS-SHEET l.

S.*WILEY| Jn.

VTIME FUSE FOR AERO BGMBS.

APPLlcAmn man nlm. 21. 1919.

.Patented 001;. 21, 1919.

' 2 SHEETS-SHEET 2 SAMUEL WILEY, JR., 0F ME-TUCI-IEN, NEW JERSEY.

TIME-FUSE FOR AERO-BOMBS.

Specification of Letters Patent.

Patented Oct. 21, 1919.

Application filed March 21, 1919. Serial No. 283,985.

y will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in time fuses for bombs adapted to be'dropped from aircraft.

A by similar reference symbols throughout the several views, and inrwhich:-

Figure 1 is a front view of the fuse and the `handle attachment for the bomb as removed from the bomb, parts being broken Fig. 2 is a side-view of the device shown in Fig. 1, as seen from the left of said figure.

Fig. 3 shows a section along the line 3 3 of Fig. 1 and looking down.

Fig. lf-shows a section along the broken line 4 1-'of Fig. 3 and looking in the direction of the arrows, but with the hammer cocked. v

4Fig- 5 shows a section along the line 5 6 of Fig. 4L and looking in the direction of the arrows, the fuse being shown in the safety position.

Fig. 6 is a similar view to Fig. 5 which shows the fuse in the armed position.

Fig. shows a section along the line 7-7 of Fig. l6' and looking in the direction of the arrows, the parts being shown on a larger scale.

perspective view of the crosshead mounted above the cap and to which the handle is connected.

Fig. 12 is a perspective view of the trigger showing the underside thereof.

Fig. 13 is a perspective view showing 1n inverted position the housing mounted above the heel of the trigger, and

Fig. 14k is a perspective view of the handle as detached from the fuse after the bomb has been released therefrom.

A represents the fuse stock which is in the form o-f a hollow cylinder chambered as at Ao to receive the rotary cap B.

C represents the hammer actuatedby the spring C. v

D represents the cross head to which handle is attached.

E represents the trigger, and F represents the trigger housing mounted on the cross hea-d.

G represents the securing screw connecting the fuse stock, the rotary cap and cross head together.

I-I represents the handle, I the spring impressed plunger for holding the cross head against turning on the rotary'cap, and K represents the safety pin.

Referring to the parts more specifically, the fuse stock A is in the form of a cylindrical cup chambered as at Ao and screwthreaded exteriorly as at a to engage screw threads in the head of the bomb. The bomb is not shown, as the invention relates primarily to the time fuse and is adapted for use with a great variety of bombs.

The fuse stock is flanged as at a', and this flange is provided with 'a safety notch a and with time notches a2, whose function will be hereinafter described.

The upper inner edge of the fuse stock is chambered as at a3 to receive the time train M, which preferably consists in a slow burning train of powder inclosed in a fusible tube of lead or an inflammable tube, which is melted or ignited when the primer is exploded, as will be hereinafter described.

Projecting' up into the center of the chamber AO is the spindle A which may be integral with, or attached to the fuse stock A, as by means of the locking pin at, see Fig. 4. In any event this spindle A is to all intents aed1 purposes an integral pant o-f the fuse s oc z Mounted in this fuse stock isthe rotary cap B having a cylindrical shell b inclosing the the chamber B, which shelll projects down intothe chamber Ao` of the fuse stock A. This rotary cap is shown in the proper posi tion in Fig. 4, but in the inverted position in Fig. 10. This cap is provided with a flange b adapted to register with the upper face of *the flange a of the fuse stock, and this flange is provided with a notch b2 to assist in setting;` the fuse at the proper time interval, which will be hereinafter described.

Projecting down into the chamber Bo of the rotary cap is a lug B having a plane face b3 from which projects the primer n which ignites the charge of powder N held in a chamber in the lug B', as shown in Figs. 4, 5, 6 and 10. The shell l) is preferably cut away as at b4 for convenience in putting the primer n in place.

C represents the hammer which is provided with a striking arm c adapted to strike the primer n, and is cut away as at c to permit the insertion of the ring spring C which is preferably in the form of a coil spring slipped over the spindle A and having one end engaging an abutment in the rotary cap, and the other end engaging the hammer arm 0, as shown in Figs. 4, 5 and 6. This hammer also slips over the spindle A and is notched as at c2 to engage the lugs e2 on the heel of the trigger E. This heel of the trigger is perforated, as at e, to slip over the spindle A and has an arm e adapted to engage an abutment on the han.

dle, which will be hereinafter described.

D represents a cross head centrally perforated as at do to slip over the spindle A, and having downwardly projecting arms d adapted to slip' over the outer edge of the flange a of the fuse stock. This cross head is provided with a catch d adapted to engage in any one of the notches in the flange of the fuse stock and also with a resilient friction arm Z2 adapted to bind against the outer face of said flange and steady the cross head while it is being moved or while it is in the unlocked position. This spring serves as a friction brake to prevent too quick iotation of the rotary cap C in setting the use.

The cross head is also provided with a socket Z3 for'the spring plunger I which is normally pressed downward by the spring I into engagement with a1 notch b5 in the rotary cap B, as shown in Figs. 1 and 4, so as to cause the cap and the cross head to rotate together when desired. This plunger and spring are held in place by the milled screw head z', see Figs. l and 4. The cross head D is provided withla groove Z5 a-t each end thereof, into which grooves project the pins adapted to engage the handle as will be hereinafter described.

F represents the housing block for the trigger, which is provided with a lug f perorated as at f to receive the securing shown in Figs. l and 3.

screw G, and is recessed as at f to engage the outer vedge of the heel of the trigger. This housing is provided with suitable pins or lugs f2 adapted to engage in the sockets al in the cross head D, see Figs. 4, 1l and 13.

The detachable handle is shown in Figs. 1 to 4 and 14, and preferably consists of two members H and H2 pivoted together, as will now be described. The inner member H is preferably in the form of a rectang'ular loop with lower forked ends i, slotted as at It?, and preferably bent inward slightly as at i, so as to provide suitable yielding frictional engagement.

One side of this loop H is provided with a rib 7a2 which serves as a stop to prevent the handle from being pressed down too far, and there is a similar stop h3 which serves also to engage the trigger arm e, as will be hereinafter described.

Secured to the sides of the loop H are the screws l1,4 which project into the slots h5 in the sides of the outer loop H2 of the handle,l shown in Fig. 14, and this outer loop has downwardly projecting legs provided with hooks la and with guide faces 71.7 above said hooks. The sides of the loops H and H2 are perforated as at ILS and It so that when the handle is secured on the fuse the safety pin K may be inserted, as shown in Fig. l, thus effectually locking the handle in the safety position, and the handle cannot be broken7 or swung to the releasing position so long as this safety pin is in place.

The outer loop H2 of the handle is pressed away from the inner loop by means of a spring H3.

The operation of the device is as follows Supposing the parts to be assembled in the safety position, first turn the handle until the pin I on the crosshead D engages in the socket b5 on the top of the cap, thus locking the crosshead and cap together and cooking the hammer. In this position the fuse will be set to burn about five seconds. If a longer time is wanted, continue to turn the handle and cap B to the time desired. If for any reason the fuse or bomb is not used when thus set, it may be turned back to the safety position with the hammer cocked.

The lug LS on the handle will engage the trigger arm c, and incident to this operation the powder mass N has been moved from registering with the abutting wall a of the fuse stock to a position opposite the time train M, the rotary cap being turned from the position shown in Fig. 5 to that shown in Fig. 6. The hammer is prevented from yielding to the action of the hammer spring C because of the engagement of the trigger arm e with the stop h3 on the handle, as Thus so long as the fio handle is attached to the fuse, the hammer is held in the cocked position and cannot be released or cannot move to the firing position.

At this time the handle will be firmly locked tothe fuse and incidentally to the bomb, and the safety pin K being in place the handle cannot be removed from the device, so that the parts are in the absolutely safety position; but the fuse is armed and set at the proper time interval.

Now if it is desired to drop the bomb with y the fuse so set, lift the bomb by the handle and hold it in the proper position for dropping, remove the safety pin K and press the outer loop H2 downward against the action of the spring H3. This may be accomplished by simply squeezing the loops H and H2 together by a single grip of the hand. The downward movement of the loop H2 relative to the loop H will cause the cam faces if to engage the pins d* and will throw the hooks 71, out of engagement, thus leaving the handle attached only to the mechanism by the frictional engagement of the arms h. The weight of the bomb will be more than suflicient to overcome this frictional engaUement, and the bomb and the parts carrled thereby will drop clear of the handle, leavinfr the han nd-efttheroperatnr. t Soon a er the bomb begins to drop downward clear of the handle, the trigger arm c will pass clear of the stop ha o n the handle, leaving the hammer spring free to rotate the 5 hammer to the firing position, causing it to strike the primer fn, and to ignite the powder charge N. vThe heat and pressure of this powder charge will be sufficient to melt or break the wall of the powder train M and this time train will burn for the predetermined time before it reaches the point m, vherg it ignites the ignition charge M, see

iig.

This ignition charge M ignites the eX- plosive charge in the bomb not shown. The lower end o'f the recess inclosing this ignition charge M may be closed in any convenient way, as by means of a thin strip m. Thus it will be seen that when the fuse is set at the predetermined time interval when the projectile is dropped clear of the handle, the time train will be ignited and the fuse will function properly for the time interval for which it is set.

To prevent against accident from premature explosion in case the operator, through inadvertencc or carelessness, fails to set the fuse at the desired time interval I construct the fuse so that the charge N ignited by the primer n will blow out without exploding the bomb when the bomb is released with the parts in the safety position. To accomplish this result the groove a3 in the fuse stock containing the time train M is interrupted, and the plane cylindrical wall. a is provided, as shown in Fig. 5. When the fuse is not set ffor any timelinterval, and the parts are in the safety position shown in Fig. 5, the powder charge N -will register with this wall a6, and yif the hammer is operated, the gases from the powder charge N will escape through the opening t6, see Figs. 3 and 4.

Thus, even if the hammer should strike the primer when the fuse is not set at an adequate time interval, there will be a simple blow-out of the primer charge without setting the time train; whereas if the fuse is set at an appreciable time interval the bomb will drop far enough away from the handle when released before it explodes, so that the operator will be perfectly safe from premature explosion.

do not mean to confine the inventlon to any particular form of bomb releasing device or primer igniting device, as these -obviously might be lvaried in many ways without departing from the spirit of my invention.

It will be obvious also that various other modifications might be made in the construction, combination and arrangement ofv parts which could be used without departing from the spirit of my invention; and I do not mean to limit the invention to such details except as particularly pointed out in the claims.

Having thus described my invention what I claim and desire to secure by Letters Patent of the United States is 1. A time fuse for aero bombs comprising a fuse stock adapted to be attached to the bomb, and provided with a time train, a rotary cap mounted in said fuse stock, and provided with a primer adapted to ignite said time train, a spring impressed hammer normally tending to strike said primer, a trigger controlling said hammer, and a handle attached to said fuse for supporting the bomb, and normally holding said trigger in the cocked position, but releasing said trigger when the handle is detached, substantially as described.

2. A time fuse for aero bombs comprising a fuse stock adapted to be attached to the bomb, and provided with a time train, a rotary cap mounted in said fuse stock and provided with a primer adapted to ignite said time train, a spring impressed hammer .normally tending to strike said primer, a trigger controlling said hammer, a handle for supporting the bomb carried by said fuse, and means carried by said handle for holding said trigger in the cocked position, and releasing same when desired, substantially as described.

3. A time fuse for aero bombs comprising a fuse stock adapted to be attached to the bomb, and provided with a time train, a rotary cap mounted in said fuse stock, and provided with a primer adapted to ignite said time train, means for setting said rotary cap at any desired position relative to said time train, a spring impressed hammer carried by said rotary cap and normally tending to strike said primer, a trigger controlling said hammer, and a handle attached to said fuse for supporting the bomb, and normally holding said trigger in the cocked position, but releasing said trigger when the handle is detached, substantially as described.

4f.. A time fuse for aero bombs comprising a fuse stock adapted to be attached to the bomb, and provided with a time train, a rotary cap mounted in said fuse stock, and provided with a primer adapted to ignite said time train, means for setting said rotary cap at any desired position relative to said time train, a spring impressed hammer carried by said rotary cap and normally tending to strike said primer, a trigger controlling said hammer, a handle for supporting the bomb carried by said Jruse, and means for holding said trigger in the cocked position, and releasing same when desired, substantiallv as described. l

5. A time fuse for aero bombs comprising a fuse stock adapted to be attached to the bomb, and provided with a time train, a rotary cap mounted in said fuse stock, and

provided with a primer adapted to ignite said time train, a spring impressed hammer normally tending to strike said primer, a trigger controlling said hammer, a handle detachably connected to said fuse for supporting the bomb, and normally holding said trigger in the cocked position, but releasing said trigger when the handle is detached,

l-and means for quickly ,releasing said handle l from said fuse when desired, and thus releas- ,i 4prmauai with ing the bomb.

6. A time fuse for aero bombs comprising a vituse stock adapted to be attached to the bomb, and provided with a time train, a rotary capmounted in said fuse stock, and a primeradapted to ignite said time train,means for setting said rotary cap at any desired position relative to said 'time train, a spring impressed hammer cari ried by said rotary cap and normally tend- 5'5`ing to strike said primer, a trigger controlling said hammer, a handle detachably connected to said fuse for supporting the bomb, and normally holding 'cocked position, but releasing said trigger in the said trigger when the handle is detached, and means for quickly releasing said handle from said fuse when desired, and thus releasing the bomb.

7. A time fuse for aero bombs comprising a fuse stock adapted to be attached to the bomb, and provided with a segmental groove and a time train mounted tion, and releasing same when desired, substantially as described.

8. A time fuse for aero bombs comprising a fuse stock adapted to be attached to the bomb, and provided with a segmental groove and a time train mounted therein, a rotary cap mounted in said fuse stock, and provided with a primer adapted to ignite said time train, but to be inoperative when registering with the space between the ends of said time train, means for setting said rotary cap at any desired position relative to said time train, a spring impressed hammer carried by said rotary cap and normally'itending to strike said primer, a trigger controlling said hammer, a handle for supporting the bomb carried by said'fuse, and means for holding said trigger in the cocked position, and releasing same when desired, substantially as described.

9. A time fuse for aero bombs comprising a fuse stock adapted to be attached to the bomb, and provided with a time train, a spindle projecting upwardly into said stock, a rotary cap mounted in said fuse stock and journaled on said spindle, and provided with a primer adapted to ignite said time train, a spring impressed hammer also journaled on said spindle and normally tending to strike said primer, a trigger also journaled in said spindle and controlling said hammer, and a handle attached to said fuse for supporting the bomb, and normally holding said trigger in the cocked position, but releasing said trigger when the handle is detached, substantially as described.

10. A time fuse for aero bombs comprising a fuse stock adapted to be attached to the bomb, and provided with a time train, a spindle projecting upwardly into said stock, a rotary cap mounted in said fuse stock and journaled on said spindle, and provided with a primer adapted to ignite said time train, a spring pressed hammer also journaled on said spindle and normally tending to strike said primer, a trigger also journaled in said spindle and controlling said hammer, and means for holding said trigger in the cocked position, and releasing same when desired, substantially as described.

11. A time fuse for aero bombs comprising a fuse stock adapted to be attached to the bomb, and provided with a time train, a spindle projecting upwardly into said stock, a rotary cap mounted in said fuse 30th Unwwnwvm stockand journaled on said spindle, and provided with a primer adapted to ignite said time train, means for setting said rotary cap at any desired position relative to said time train, a spring impressed hammer, also journaled on said spindle and normally tending to strike said primer, carried by said rotary cap, a trigger also journaled on said spindle and controlling said hammer, and a handle attached to said fuse for supporting the bomb, and normally holdino said trigger in the cocked position, but re easing said trigger when the handle is detached, substantially as described.

12. A time fuse for aero bombs comprising a fuse stock adapted to be attached to the bomb, and provided with a time train, a spindle projecting upwardly into said stock, a rotary cap mounted in said fuse stock and journaled on said spindle, and

provided with a primer adapted to ignite said time train, means for setting said rol tary cap at any desired position relative to 25 said time train, a spring impressed hammer, Ialso journaled on said spindle and normally tending to strike said primer, caried by said rotary cap, a trigger also journaled on said spindle and controlling said hammer, and means for holding said trigger in the cocked position, and releasing same when desired, substantially as described.

13. A time Jfuse for aero bombs comprising a fuse stock adapted to be attached to the bomb, and provided with a time train, a spindle projecting upwardly into said stock, a rotary cap mounted in said fuse stock and journaled on said spindle, and provided with a primer adapted to ignite said time train, means for setting said rotary cap at any desired position relative to said time train, a spring impressed hammer, also journaled on said spindle and normally tending to strike said primer, carried by said rotary cap, a trigger also journaled on said spindle and controlling said hammer, a handle detachably connected to said fuse for supporting the bomb, and normally holding said trigger in the cocked position, but releasing said trigger when the handle lis detached, and means for quickly releasing said handle from said fuse when desired and thus releasing the bomb.

14. A time fuse for aero bombs comprising a-fuse stock adapted to be attached to the bomb, and provided with a time train, a spindle projecting upwardly into said stoc a rotary cap mounted in said fuse stock and journaled on said spindle, and provided with a primer adapted to ignite said time train, means for setting said rotary cap at any desired position relative to said time train, a spring impressed hammer also journaled on saidA spindle and normally tending to strike said primer, a trigger also journaled in said spindle and controlling said hammer, and a handle lattached to said fuse for supporting the bomb, and normally holding said trigger in the cocked position, but releasing said trigger when the handle is detached, substantially as described.

l5. A time fuse for aero bombs comprising a fuse stock adapted to be attached .to the bomb, and provided With a time tram, a spindle projecting upwardly lnto lsaid stock, a rotary cap mounted in said fuse stock and journaled on said spindle, and provided with a primer adapted to .ignite said time train, means for setting sald rotary cap at any desired position relative to said time train, a spring impressed hammer also j ournaled on said spindle and normally tending to strike said primer, a trigger also journaled in said spindle and controlling said hammer, and means for holding said trigger in the cocked pos1t1on, and releasing same when desired, substantlally as described.

16. A time fuse for aero bombs comprising a fuse stock adapted to be attached to the bomb, and provided with a time train, a

spindle projecting upwardly into said stock, a rotary cap mountedin said fuse stock and journaled on said spindle, and provided with a primer adapted to ignite said time train, means for setting said rotary cap at any desired position relativ'e to said time train, a spring impressed hammer normally tending to strike said primer, carried by said rotary cap, a trigger also journaled on said spindle and controlling said hammer, and a` handle attached to said fuse for supporting the bomb, and normally holding said trigger in the cocked position, but releasing said trigger when the handle is detache substantially as described.

17. A time fuse for aero bombs comprising a fuse stock adapted to be attached to the bomb, and provided with a time train, a spindle proj ecting upwardly into said stock, a rotary cap mounted in said fuse stock and' journaled on said spindle, and provided with a primer adapted to ignite said time train, means for settting said rotary cap at any desired position relative to said time train, a spring impressed hammer, normally tending to strike said primer, carried by said rotary cap, a trigger also journaled on said spindle and controlling said hammer, and means for holding said trigger in the cocked position, and releasino' same when desired, substantially as described. 18. A time fuse for aero bombs comprising a fuse stock adapted to be attached to the bomb, and provided with a time train,

a spindle projecting upwardly into said stock, a rotary cap mounted in said fusel stock and journaled on said spindle, and

` handle from said fuse when desired, and

thus releasing the bomb.

19. A time fuse for aero bombs comprising a fuse stock adapted to be attached to.

:the bomb, and provided with a segmental groove and a time train mounted therein, a rotary cap mounted in said fuse stock, and provided with a primer adapted to ignite said time train, but to be inoperative when registering with the space between the ends of said time train, means for setting said rotary cap at any desired position relative to said time train, a spring impressed hammer carried by said rotary cap and normally tending to strike said primer, a trigger controlling said hammer, and means for holding said-trigger in the cocked position, `andreleasing same' when desired, substantially as described. 20. A time fuse for aero bombs comprising a fuse stock adapted to be attached to the bomb, and provided with a segmental groove and a time train mounted therein, a

rotary cap mounted in said fuse stock, and provided with a primer adapted to ignlte said time train, but to be inoperative when registering with the space between the ends of said time train, a spring impressed hammer normally tending to strike said 21. A time fuse for aero bombs comprisf ing a -use stock adapted to be attached to the bomb, and provided with a segmental groove and a time train mounted therein, a rotary cap mounted in said fuse stock, and provided with a primer adapted to ignite said time train, but to be inoperative when registering with the space between the ends of said time train, means for setting said rotary cap at any desired position relative to said time train, a spring impressed hammer carried by said rotary cap and normally tending to strike said primer, a trigger controlling said hammer, and means for holding said trigger in the cocked position, and releasing same when desired, substantially as described.

SAMUEL WILEY, JR.

Uopi'el of this lpatent may be obtained for ve cents each, by addressing the Commissioner of Patents.

Wilmington, D. C.