US296430A - Mabtin luthee mikesell - Google Patents

Description

(No Model.)

. M. L. MIKESELL LOOK. No. 296,430. Patented Apr. 8,1884.

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UNITED STATES PATENT FFIGEO MARTIN LUTHER MIKESELL, OF MUSGATINE, IOW A, ASSIGNOR, BY MESNE ASSIGNMENTS, TO MARY ELIZA MIKESELL, OF SAME PLACE.

LOCK.

SPECIFICATION forming part Of Letters Patent N0. 296,430, dated April 8, 1884.

' Application filed December 18, 1883. (No model.)

.To aZZ whom it may concern.-

Be it known that I, :MARTIN LUTHER MIKE- sELL, of Muscatine, in the county of Muscatine and State of Iowa, have invented a new and 5 Improved Look, of which the following is a full, clear, and exact description.

The object of my invention is to provide a lock adapted also for use as a latch, and having but few and simple parts, which act positively and are not liable to get out of order.

The invention consists in certain improve ments in that class oflocks which have a gravitatin gtumbler or dog fitted to engage thelatchbolt to throw the bolt outward for latching the door without the aid of a spring, as will be hereinafter fully described, and specifically set forth in the claims. ,7

Reference is to be had to the accompanying drawings, forming a part of this specifiation, in which similar letters of reference indicate corresponding parts in both the figures.

Figure 1 is an elevation of the inner face of the lock, partly in section, and with the inner plate of the lock-case removed; and Fig. 2 is a cross-sectional elevation of the lock on the irregular line aa: to, Fig. l. v

The letter A indicates the bolt, which has two pins or studs, G, projecting from its lower edge to form a recess in which may enter the toe D, formed at the upper end of the weighted tumbler H, hung on the knob-spindle E, and secured thereto to turn with the spindle by a pin, G. The spindle E is shown supported by the front plate of the lock and be substituted by the inner plate of the lock.

The letter M indicates a lock-bar or stop, shown in this instance fitted to turn on a bushing, K, which has its end bearings in re- 0 cesses k of the lock-plates, and also has a stud or pin, it, fixed in it, which works in a groove,

a, cut in the stop M, and acts at either side of a stud or pin, 0, on stop M and projecting into groove a, to swing the stop over, as in full lines, to lock the dog H firmly against its seat H, formed in the lock-case.

I provide the bushing K with a central pin or bit, 2'), as a guide for the key N of stop M, and in this example I have fitted the bushing go with thezradial bars or web-plates c, which serve an inner bridge-piece, E, which latter may to support the center bit, Z1, and are engaged by slots of the key for turning the bushing to swing the stop M, as above described but any other approved key device may be used to swing the stop. 5 5

B is a screw-pin, preferably threaded into the lock-case, and adapted to enter a hole, a, made in the side of latch-bolt A, as a further security against an inward or unlocking movement of the bolt.

In operation, when it is desired to use the look as a latch only, the stop M is swung back and over by the key N, as indicated in dotted lines, Fig. 1, which leaves the dog H free to swing upward by the knob-spindle, as in dotted 6 5 lines, to move the bolt A inward for unlatching and opening the door, and when the knob is released the bolt will be thrown outward by the downswing of dog H by its gravity alone, thereby dispensing with springs for the purp ose. When the door is closed and latched, the bolt A may be locked securely by swinging the stop M over in front of the dog H or by the screw-pin B, or by both means, if desired.

My improved lock may readily be made for either right or left hand doors, is entirely devoid of springs or delicate parts liable to be broken, and the lock may be cheaply made, and is strong, durable, practical, and cfficient, either as a latch or look, and the adjustments for either use are quickly and easily efiected.

I am aware that a sliding bolt has been provided with a depending arm, against which a pivoted stop may be turned by means of a key 8 5 from the outside or by a handle from the in-- side, to prevent said bolt from being forced forward by the shouldered hub on the knobshank; also, that a reversible sliding bolt has been provided with a yoke, within which the 0 shouldered hub of the knob-shank works, said bolt being connected to a pivoted weight by an arm of said weight engaging a recess in said yoke, and that said weight has been recessed at its bottom to allow a pivoted stop to 9 5 turn therein to lock the weight in place, and thereby prevent the bolt from being operated by the knob, and I do not desire to claim any such constructions, broadly, as of my invention.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination of the slidingboltA with the weighted tumbler H, secured to the knobshank, and provided with a toe on its upper end engaging said bolt, and with a concavity at its lower end, and a swinging stop, M, mounted to rotate on a bushing, k, and lock against the lower end of the weighted tumbler, said bushing being. constructed to be operated by a key, and provided with a pin for engaging the said swinging stop, substantially as set forth.

2. The combination of the weighted tumbler with the devices for locking said tumbler in place, said devices consisting of a stop, M, having a groove, n, terminating in a stud, 0, an d a bushing, k, on which said stop is mounted, a pin, m, on said bushing and within the groove 02, and a key-post and webs b 0 in the center 20 of said bushing, substantially as set forth.

MARTIN LUTHER MIKESELL.

\Vitnesses FRED BRIDGMAN, BENJAMIN BEACH.

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