US659445A - Time-lock. - Google Patents

Description

No. 659,445. I Patented Oct. 9, 1900. w. H.,HOLLAB, A. KENNEDY & A. L. mmmzs.

TIME LOCK.

(Application filed July 28, 1899.)

(No Model.)

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IVILLIAM H. HOLLAR, ANTHONY KENNEDY, AND ALONZO L. RHODES, OF

PHILADELPHIA, PENNSYLVANIA; SAID KENNEDY AND RHODES AS- SIGNORS TO SAID HOLLAR.

TIME-LOCK.

SPECIFICATION forming part of Letters Patent No. 659,445, dated. 0ctober'9, 1900.

Application filed July 28,1899. S a 110- 725,356- (No model.)

To all whom it may concern.-

Be it known that we, WILLIAM H. HOLLAR, ANTHONY KENNEDY,and ALONZO L. RHODES,

'of Philadelphia, in the State of Pennsylvania,

have invented certain new and useful Improvements in Time-Locks, whereof the following is a specification, reference being had to the accompanying drawings.

Our invention relates particularly to the movable member of a time-lock, whereby a hook-lever is normally maintained in position to detain an automatic bolt-operating device and which upon the completion of a predetermined period of time is shifted by a clockmovement to release said devices. Ordinarily said movable member or lockingbar when in idle position is not secured against movement and may therefore be displaced and effect the opening of the look before the desired time by a shock, such as may be occasioned by explosives.

Therefore it is the object of our present invention to positively secure the locking-bar of a time-lock against accidental displacement, so that it may be released only when the time for its operation has arrived.

In the accompanying drawings, Figure 1 is a front elevation of a time-lock conveniently embodying our invention. Fig. 2 is a rear elevation of the looking-bar shown in Fig. 1. Fig. 3 is a fragmentary plan view of the locking-bar, its detent, and the fixed lug with which it is normally engaged. Fig. 4 is a perspective view of the hook-lever which connects the locking-bar with the compound levers, &c., directly controlling the automatic bolt-operating device.

In said figures, A is the casing of a timelock comprising four clock-movements B B B B so constructed and arranged that their respective pins 5 b b b serve after a period of time predetermined by the setting of the parts to shift the locking-bar O in the direction of the arrow upon Fig. 1 by the thrust of said pins against the respective lugs 0 c c 0 upon said bar. Said bar 0 connects the two levers D, which are mounted to oscillate upon the fixed fulcrum-studs E and are connected at their opposite extremities by the bar C. Said bar 0 is operatively engaged with the armfof the hook-lever F, which is mounted to oscillate upon the fixed stud G, so that the arm f may in the normal position of the parts indicated in Fig. 1 engage and detain the said automatic bolt-controlling device by ordinary compound levers and may release the same when said locking-bar is shifted by the clock-movements in the direction of the arrow upon said figure.

In the ordinary form of locking-bar the only means provided for maintaining the same in normal position is the spring-actuated plunger O ,which is mounted in the bar 0 to bear upon the edge of one of the levers D, as shown. It has been found in practice that said means does not suffice to prevent the vibration and release of the parts under abnormal conditions, and we have therefore provided the locking-bar C with a detent-lever H, arranged to normally engage the fixed detentlug A, as shownin Fig. 2, to positively secure said bar against displacement. The arm h upon said lever extends within the path of travel of the pin 1), so as to be encountered by the latter and lifted from engagement with the lug A just before the contact of said pin with the lug 0 upon the bar 0, so that said bar 0 is positively secured against movement in the direction of the arrow until the time of operation of the lock is reached, and at said time said bar is positively released and permitted to operate.

Any one of the clock-movements B, &c., is adapted to effect the aforesaid release of the locking mechanism, and said clockmovements are arranged in multiple merely to lessen the chance of failure to effect said release. We therefore provide said bar 0 with additional levers H H H so related to the respective clock-movements B B B that the operation of any one of said clock-movements shall eifect the release of the detent H by means of the rod H connected therewith. Although the weight of the rod H may suffice to normally maintain the parts in the position shown in Fig. 2, we prefer to insure the maintenance of the parts in such position by providing said rod with the spring h extending to the stud c fixed upon the bar 0.

As ordinarily constructed the locking-bar is free to vibrate at any time, so thatit may be shifted, together with the hook-lever,to place the compound levers in engagement with the latter. In the type of locking-bar which we have illustrated the positive seeurement of the locking-bar would prevent such idle movement of a rigidly-connected hook-lever. We therefore find it convenient to so construct the hook-lever F that its arm f maybe idly shifted with respect to the arm f from the position shown in full lines in Fig. l to the position shown in dotted lines in said figure, and thus permit of the aforesaid setting of the parts without disturbance of the locking-bar O. The construction of said hook-lever F is shown in Fig. 4, wherein the hubs of the arms ff are shown cut away upon respectively opposite sides, so as to per- Init of the necessary idle movement between said arms. It will be understood, however, that the proportions of the parts are such that the spring f serves to normally maintain the shoulderf in contact with the shoulder f, so that the movement of the arm f under the actuation of the clock-movements is rigidly imparted to the arm f to eifect the release of the latter from the compound 1evers aforesaid.

It is usual to increase or diminish the number of clockmovements in a time-lock in accordance with the degree of security desired and to otherwise adapt the construction and arrangement of I he time-lock to the particular vault or safe in which it is to be embodied. It is therefore to be understood that the number of cl0ck-m0vements which we have shown and the construction and arrangement of the parts are merely typical, as it is obvious that various modifications may be made therein without departing from the spirit of our invention.

We claim- 1. In a time-lock, the combination with a hook-lever detent for an automatic bolt-opcrating device, of a movable bar operatively connected with said hook-lever, a detent arranged to positively secure said bar against displacement, a clock-movement, and means actuated by said clock-movement to release said har-detent, shift said bar and said hooklever, and release said automatic, in predetermined relation, substantially as set-forth.

2 In a time-lock, the combination with a hook-lever detent for an automatic bolt-operating device, of a movable bar operatively connected with said hook-lever, a detent arranged to positively secure said bar against disp1acement,a plurality of clock-movements, and means arranged to be actuated by any one of said clock-movements to release said bar-detent, shift said bar, shift said hook-lever, and release said automatic, in predetermined relation, substantially as set forth.

3. In a time-lock, the combination with a hook-lever detent for an automatic bolt-op crating device, said leverhaving opposite arms in relatively-movable relation, of means to connect one of said lever-arms with said automatic, and means to connect the other of said lever-arms in operative relation with a clock-movement, substantially as set forth.

4. In a time-lock, the combination with a hook-lever detent for an automatic bolt-operative device, said lever having opposite arms relatively movable in one direction, and relatively fixed for movement in the opposite direction, of means to connect one of said lever-arms with said automatic; and means to connect the other of said lever-arms in operative relation with a clock-movement, substantially as set forth.

WILLIAM H. HOLLAR. ANTHONY KENNEDY. ALONZO L. RHODES.

Witnesses:

Tnos. A. GosLINE, MARY FITE.

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