US244298A - Locking-latch - Google Patents

Description

(Model.)`

Patented July 12 N. FUERS, Mm, www D. a

(Model.) 2 Sheets-Sheet 2.

l A.v RAND. LOOKING LATCH.

10.244,298. Patented July 12,188,14.

\ Wweses.'

n. mins. Mumqnpw. Mmmm. nu

UNITED STATES V PATENT OEEioE.

l ANDERS RAND, OF GALVESTON, TEXAS.

LOCKING-LATCH.

SPECIFICATION forming part of Letters Patent No. 244,298, dated July 12, 1881. Application filed February 7, 1581. (Model.)

To all rwhom it may concern:

Be it known that I, ANDERS RAND, of Gralveston, in the county of Galveston and State` of Texas, have invented certain new and useful Improvements in Locks and l do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, and in which- Figure 1 is a plan view of one of my improved locks with its attachments and key, the covering-plates being removed for the purpose of better showing the construction. Fig. l is a detailed view, showing more fully the tumblers L. Fig. 2 is a sectional view on the line x a', Fig. l.V Fig. 3 is a sectional view on the line yy, Fig. 2. Fig. lis a detail view of the bolt detached.

Corresponding parts in the several figures are denoted by like letters of reference.

This invention relates to locks; and it consists in certain improvements in the construction ofthe same, which will be hereinafter fully described, and particularly pointed out in the claims.

In the drawings hereto annexed, A represents the case of the main lock, in which the main bolt B has a lon gitudinally-sliding movement. The said bolt consists of two parts or sections, C D, (see Fig. 3,) united by screws E, and by means of the cap F, which is secured upon the outer end of the bolt by means of screws or rivets. The said bolt is provided with a longitudinal slot, G, in which is adjusted the mainspring H, which works against a stud,I, projecting from the bottom of the case, and which tends to force the bolt in an outward direction to engage the jamb of the door.

J J are studs projecting from the bottom of the case,one on each side of the bolt, as shown, and provided with threaded openings to receive the screws bywhich the coveris secured upon the case. Upon the said studs are pivoted tumblers K K L, the former of which work above and below, and the latter, L, in slots M in the sides of the bolt. These tumblers are provided with suitably-arranged springs N, by which theirfront ends, which are provided with hook-shaped projections O, are held against the pins or studs P in bolt B, near the front end of the latter. The bolt is at this pointprovided with a longitudinal slot, Q-the keyslotthe sides of which have correspondinglyshaped recesses B, to admit the bit of the key when the latter is turned for the purpose of operating the bolt.

The tumblers L extend some distance back of the fulcrum pins or studs J, for the purpose of engaging notches S in the front ends of levers T T, pivoted at the sides ofthe bolt, near the rear end of the latter. The operation and function of these levers will be hereinafter described.

The rear end ofthe bolt is provided with a slot or opening, U, to accommodate the eccentric V of the spindle W, by which, when unlocked, the bolt is operated in the same manner as ordinary door-locks now in general use. It will be observed, however, that when the bolt is locked, as in Fig. 1, the eccentric is accommodated in the rear part of the slot or opening U, which is just of sufficient width for this purpose, thus preventing the spindle from being turned by force.

One of the principal features of my invention,fully illustrated in Fig.1 of the drawings, but equally applicable to the several modications of my invention which are to be hereinafter described, consists in the combination, with the main lock, of one or more supplementary locks in the top, bottom, and sides of the door, operated by and governed by the action ofthemainlock. Ofthese supplementarylocks (which are by preference arranged at the top and sides, inasmuch as the mortise for the bolt of a bottom lock would be liable 'to be clogged by sand and dust) I have in the drawings shown two, (denoted respectively by X and Y.) Each consists of a simple bolt, Z, forced in an outward direction by a suitably-arranged spring, A. The bolt of the upper lock, X, is connected by a chain or wire, B', with a rod, C', pivoted to the front end of one of the levers T, above referred to. A similar rod, C',

pivoted to the front end of the other lever, T,

is connected by a chain or wire, D', with a slide, E', workingin the rear end of the caseof lock Y, and operating the bolt of said lock through the medium of a bell-crank lever, F'.

IOO

The rear ends of the levers T T are curved toward each other behind the main bolt, as

shown, so that when the said main bolt is oper-l ated by the spindle and eccentric or cam it shall force the rear ends of said levers apart, thus causing their front ends to operate the bolts of looks X Y through the intermediate mechanism just described. At G', Fig. 1, I have shown the key of the abovedescribed lock, which is provided with a double bit, one side of which, H', is provided with two incisions eXtendin gto the handle, and forming three prongs, I', for operating the tumblers K K L on one side of the bolt. The length of said prongs is, of course, made to correspond to the shape of the tumblers, which in different locks are of different width. The other side, J', of the bit has similar incisions, but of less depth, this side being intended to move the bolt. Suitable key-holes are, of course, provided in the case.

The operation of the lock is as follows: Assuming it to be locked, the key should be inserted with the side J of the bit toward the cap of the bolt. A half-turn of the key forces the tumblers K K L back from the pins or studs l? and moves the bolt a short distance back, and causes the hook-shaped projections of the tumblers, when the latter, by the action of their respective springs, are returned to their original position, to assume a position in front of the pins I. The bolt is now unlocked, and may be operated by the spindle and cam. When thus operated the levers T T are operated by the bolt, as above described, causing their front notched ends to engage the rear ends of the tumblers L, by which they are held, thus retaining the bolts of the locks X and Y- in an unlocked position, leaving the main bolt B alone to be operated, in the manner of an ordinary door-lock.

To lock, the operation is simply reversed. Tumblers L are disengaged from T, tumblers K K L forced back, and the main bolt moved forward, all by a half-turn of the key.

It is obvious that instead of the three tumblers K K L on each side of the bolt, any desired number may be used without affeetin g the spirit of my invention.

This lock, while simple in construction, is durable and eminently safe.

By interchanging the tumblers K K and L, a single set of patterns will answer for a large number of locks.

My improved locks, as will be seen from the foregoing, are simple, inexpensive, durable, and eminently safe. They are applicable to doors, drawers, cabinets, and the like; may, without modification, Vbe used as right or left hand locks, and when combined with supplementary locks, as herein described, obviate all necessity of separate latches or dead-locks, all the functions of which they perform in a more satisfactory manner.

Having thus described my invention, Iclaim and desire to secure by Letters Patent of the lUnited Statesl. In a latch, the combination, with the sliding-bolt B,tumblers K K L, having their forward ends provided with hooks or ri ght-an gled projections adapted to engage studs upon the bolt, and the lever T, operated by the bolt and having its forward end adapted to engage with the tumbler L, of the supplementary lock hav ing its operating mechanism connected to the lever T, substantially as and for the purpose set forth.

2. In a latch, the combination of the spindle W and its eccentric or cam V, the sliding bolt B, tumblers K K L, having their forward ends provided with rightangled projections or hooks adapted to engage studs upon the bolt, thelevers T, operated bythe bolt, and with their forward ends adapted to engage with the tumblers L, and the supplementary locks X Y, with their operating mechanism connected to the levers T, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereto aftiXed my signature in presence of two witnesses.

ANDERS RAND.

Witnesses W. M. STRATTON, J AMES S. BURNS.

Images