US21862A - Island - Google Patents

Description

iUNITED STATES PATENT OFFICE.

STEPHEN S. BURLINGAME, OF W'ARVICK, RHODE ISLAND, ASSIGNOR TO HIMSELF AND VILLIAM TAYLOR, OF SAME PLACE.

BANK-LOCK.

Specification of Letters Patent No. 21,862, dated October 19, 1858.

To all whom it ma concern:

Be it known tiat I, STEPHEN S. BUR- LINGAME, of lVarwick, in the county of Kent and State ot' Rhode Island, have invented certain new and useful Improvements in Bank-Locks; and I do hereby declare that the same are described and represented in the following specification and drawings.

To enable others skilled in the art to make and use my improvements I will proceed to describe their construction and operation referring to the drawings in which the same letters indicate like parts in each of the figures.

Figure l, is a plan ot the interior of the lock. Fig. 2, is an elevation of the lock with one side removed. Fig. 3, is an elevation of the plate of the lock; Fig. 4, the underside of the plate of the lock.

The nature of my invention consists in one or more pairs of spring slides, arranged to close the key hole, when the key is withdrawn and lock the working key, the slides being so constructed as to be pushed open by the point and bits of the key when it is inserted, also in providing the working key with spring pawls to lock it when the key is Withdrawn, the pawls being so constructed and arranged as to be pushed out by the bits of the key when it is inserted, also in locking the 2d working key and stopping the key hole by a sliding` tube or collar, pushed out by a spring and locked by a bolt, and in fastening the working key to the back plate oi the lock by a flange and countersunk plate.

In the accompanying drawings A, is the plate of the lock, B, B, the sides of the case provided with an opening O, shown in Fig. 5, to let any powder escape that may be put into the lock to blow it oii'; D, D, the ends of the case, E, the back plate or cover.

In this lock four bolts 1, 2, 3, 4, are represented that is one working through each side and end of the lock. The rear ends of these bolts are provided with slots iitted to traverse on the standards a., b, c, d, fastened to the plate A, to support and steady the rear ends of said bolts. The bolts l, and 2, are locked out by the pins e, e, which catch behind their ends, and are locked when drawn in by the same pins falling into the notches f, f, in the bolts. The pins e, e, are fastened in the lever F, which vibrates on the stud G, shown by dotted lines in Fig. l,

which is fastened in the plate A. This lever F, is provided wit-h a cross or arin H, carrying the pin g, which catches into the notches in the bolt 3, to lock it in or out.

I, is a lever arranged to vibrate on the stud J, and carries a pin L, which catches into the notches in the bolt 4, to lock it in or out. This lever I, is operated by the end of the cross H, as shown by dotted lines at K, Fig. l. These levers are all operated by the two ends of the spring L, in the stud M, (shown by dotted lines in Fig. 1,) and arranged to press the pins into the notches in all the bolts. The pin 2', in the back end of the bolt l, vibrates the lever N, on the stud O, and traverses the bolt 3, by the pin y'. The link P, connects the pin tothe lever It which vibrates on the stud Q and traverses the bolt 2, by the pin Q. The pin i', in the bolt l, vibrates the lever N, on the stud O, and traverses the bolt Ll, by 'the pin j.

S, is a stud fastened into the plate A, and provided with a collar S', with a score 7c, across its upper end, which receives the bits le', c, of the working key T, Fig. 4. This collar S traverses on the stud and is prevented from turning by the pin Z, in the stud S, shown by dotted lines in'Fig. 2, the collar having a slot in it so as to traverse on the pin l. The spring U. fastened to the plate A, acts against the lower end oi the collar S', and presses it out into the working key T, so as to stop the key hole and lock the key T, by catching the bits 7e', in the score 7c. The working key T, consists of a short cylinder, with a iange around one end, fitted to a countersink in the plate T, which is fastened to the back plate E, so as to hold the working key firmly to the plate and allow it to turn freely. This key T, has the two bits 71:', on the inside to which the score 7:2 in the key T2 is fitted see Fig. 6. This key T2 is applied through a hole in the door and when it is put in it pushes the collar S, down below the bits 7s', so as to release the working key T, and turn it and carry the bit Z, against the projection Z2, on the lever F and raise it so as to throw all the locking pins out of the bolts, and then move the bolts by acting against one side ot' the score K in the bolt l; and after the bolts are moved the key T2 may be turned to the right position for the collar S', to rise and catch. the bits le, and lock the working key T.

The collar S, is locked up into the working key T, by the forked sliding bolt V, which is traversed under it and under the end of the spring U, for that purpose. The bolt V has two slots in it for the screwsfV, V, which hold it to the plate A, and allow it to traverse; it is also provided with four' projections V2, against which the working key IV, acts to traverse the bolt V. This key IV, consists of a collar, Fig. 7, with a bit m, to act on the projections V2, of the bolt V. It also has a flange X, around its upper end with scores min, for the pins which lock it, and holes o, in its sides for the spring pawls p, p, which catch into them. There are also slots on the inside at the upper end terminating in the holes 0, 0, so that when the bits Y, Y, are pushed in they press out the pawls p, p, the key W, being arranged to turn on a stud in the plate A.

The key, Z, Fig. 8, is made in the form shown in the drawing with bits Y, Y, above mentioned and a conical point Y, to press open the spring slides Q, Q. These slides are arranged to slide right over the key IV, and between it and the end of the tuberZ, Fig. 3, fastened to the plate E, through which tube the key Z, is inserted. The shanks of the slides Q, Q, traverse in the boxes Q-, Q fastened to the plate A. These slides are pressed toward each other by the springs Q2 Q2 fastened to the plate A. There are some pins i", r, in the slides Q, Q, which pins enter the notches n, n, in the working key 7, to lock it when the slides come together, and prevent it from being turned and hold the working key lV, until the key Z is inserted and the slides pressed apart.

To unlock this lock, the key Z, is put into the key hole Z2 the point Y, presses apart the slides Q, Q, so that the bits Y, Y, enter between them, the key Z, is now turned one fourth around and pushed into the working key W, so as to push out the spring pawls p, p, and release the key W, which is turned four times around to draw back the bolt V, and allow the working key T2, to be pushed in and turn the working key T, so as to draw in all the bolts.

Although I have described but oneJ set of slides Q, Q, to close the key hole, I contemplate that another pair may be arranged at right angles above them, or a series of pairs if desired with pins for the notches 1i, a.

I believe I have described and represented my improvements in bank locks so as to enable any person skilled in the art to make and use them. I will now state what I desire to secure by Letters Patent to wit:

I claiml. One or more pairs of spring slides Q, Q, to close the key hole Z2 provided with pins to enter the notches n, n, and lock the collar or working key W7, the slides being so constructed as to be pushed open by the point and bits of the key Z when it is inserted as described.

2. I claim the collar or working key IV, in combination with the pawls 29, p, so constructed and arranged as to be pushed out by the bits Y, Y, of the key Z, when it is inserted as described.

3. I claim closing the key hole and locking the working key T, by the sliding tube or collar S, pushed out by a spring and locked in the key hole by the bolt V, as described.

4. I claim fastening the working key T, to the back plate of the lock by means of a flange and plate substantially in the manner described.

STEPHEN S. BURLINGAME.

I. DENNIS, Jr., J. F. CALLX.

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