US901561A - Chair-lock. - Google Patents

Description

G. E. SHARING. CHAIR LOCK.

APPLICATION FILE-QUAIL 21, 1908.

901,561. Patented Oc't. 2Q,1 908;

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GEORGE E. summer, or TOWANDA, PENNSYLVANIA.

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Specification of Letters Patent.

Patented act. so, 190

Application filed March 21, 1908. Serial No. 422,485.

To all whom it may concern:

Be it known that I, GEORGE E. SEARING, citizen of the United States, residing at T0- wanda, in the county of Bradford and State of Pennsylvania, have invented certain new and useful Improvements in Chair-Locks, of which the following is a specification.

This invention has for its object a simple, durable and efficient construction of device for holding in firm connection with the floor, the legs of chairs or other articles of furniture, in a manner to permit them to be easily detached and the articles of furniture moved to one side for the purpose of sweeping or the like.

The invention is particularly designed for use in entertainment halls and similar laces, although it is obvious that it is also applicable for other uses generally.

The invention consists in certain constructions, arrangements and combinations of the parts that I shall hereinafter fully describe and claim.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawings, in which:

Figure 1 is a perspective view of my improved locking device; Fig. 2 is a detail perspective view of one of the parts; Fig. 3 is an inverted perspective view of the other part; and, Figs. 4 and 5 are sectional views.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

My improved lock for the legs of chairs or the like comprises two main parts, namely, a keeper plate and a nut arran ed for detachable connection therewith, and in the present instance, I have illustrated the kee er as a plate 1 designed to be secured to t e floor. For this purpose, the said floor plate is provided at its ends with downwardly o fset and outwardly extending apertured ears 2 for the reception of nails, screws or the like. The plate 1 is also formed with a longitudinally extending slot 3 embodying a middle portion 3 in which the opposite curved walls 1 define arcs of the same circle, the end portions 3 being contracted and in alinement with each other, as shown. The side edges of the plate 1 are formed with de ending flanges 4 which serve to strengthen t e floor plate and prevent the same from breaking down upon the imposition of any weight thereon, the edges of said flanges terminating slightly above the floor or other surface to which the plate is secured, so as to permit a strip to be shoved through the plate between the same and the floor for the purpose of clearing out any dirt'that might accumulate therein. At one side wall of the middle tion 3 of the slot 3, the plate isformed with a depending stop lug 5, as clearly illustrated in the drawing. The lock-nut 6 designed to 006 erate with the floor plate 1 is secured to theifower end of the leg of a chair or other article'of furniture by means of a screw 7 or other pivot, and said nut is formed, prefer ably at diametrically opposite points with downwardly offset and outwardly projecting wings 8. The nut 6 is riveted or otherwise secured to turn with a handle 9, which is also mounted on the ivot 7 and which is provided with a diskike head 10, the margin of which preferably projects beyond the rim edge of the nut 6.

In the ractical a plication of my rovedloc r, the hand e 9 is turned so as to ring the offset wings 8 of the lock-nut 6 into registry with the contracted ends 3 of the slot 3, and the lock-nut is thus inserted in said slot with the wings 8 lying in lanes below the elevated lower face of the door plate 1, and the handle 9 is then turned in the direction where it will lie underneath the chair or other article of furniture, the wings 8 engaging the plate and being turned until one of them abuts against the stop lug 5, whereu on it will be understood that the lock-nut willbe held securely in engagement with the keeper or floor late 1, said stop lug preventing the handle om being turned accidentally far enough to permit the accidental unlocking of the parts.

It is to be particularly noted that the locknut 6 is so shaped as to fit snugly, when applied to the plate 1, within the middle portion 3 of the slot 3. Hence, the parts will always be kept in alinement and the locking and unlocking of the parts will be facilitated. This alinement is also effected by the stop lug 5, as is evident. The head 10 of the handle bears upon the upper face of the keeper or floor plate 1 and takes all of the wear of the parts in the coupling and uncoupling operations. It is also to be noted that the head of the screw 7 or other pivot preferably projects below the offset wings 8 which permits the chair or other article of furniture to slide on the floor on the head of the pivot when porthe chair is free from the floor plate so as to avoid possible injury to the lock-nut wings which might occur should said wings rest The clearance between the nut being secured to said head.

upon the floor.

floor and the underside of the floor plate 1 is such that neither the nut or the head of the ivot will touch the floor, when the parts are 'ocked together.

From the foregoing description in connection with the accompanying drawing, it will be seen that I have provided an improved construction of device of this character which possesses the characteristics of simplicity, ease, and cheapness of manufacture, and

ficiency in operation for the purposes for which it is designed,

like and formed with a head of larger diameter than the nut and the slot and arranged to rest upon the upper surface of the plate, the

2. A lock for chairs or the like, comprising a plate designed to be attached to the floor and formed with an elongated slot and with a depending stop lug contiguous to one wall of the slot, a nut adapted to pass into said slot and formed with offset and outwardly extending wings arranged to lock the nut into engagement with the plate, and a handle provided with a head pivotally connected to the ef chair leg or the like, and of larger diameter l than the nut and the slot, the nut being rigidly connected to the head, as and for the Having thus described the invention, what I purpose specified.

is claimed as new is:

In testimony whereof I affix my signature 1. A lock for chairs or the like, comprising i in presence of two witnesses.

a plate designed to be attached to the floor l and formed with an elongated slot, a nutl ada ted to pass into said slot and arranged l for ocking engagement therein, and a handle pivotally connected to the chair leg or the GEORGE E. SEARING. [L. s]

Witnesses W. G. GORDON, P. F. EsTE L.

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