US734247A - Device for operating awnings. - Google Patents

Description

PATENTED JULY 21, 1903.

, G. H. TALLEY. DEVICE FOR OPERATING AWNINGS.

APPLICATION FILED MAR. 10, 1903.

N0 MODEL.

megs.

so. i-34,249.

UNITED STATES iatented uly l, 1901 PATENT OFFICE.

CHARLES H. TALLEY, oF LINCOLN, ILLINOIS.

SPECIFICATION forming part of Letters Patent No. 734,247, dated July 21, 1903.

7 Application filed March 10,1903. Serial No. 147,128. (No model.)

To all whom it may concern:

Be it known that I, CHARLES H. TALLEY, a citizen of the United States, and a resident of Lincoln, in the county of Logan and State of Illinois, have invented certain new and useful Improvements in Devices for Operating Awnings, of which the following is a specification.

The primary objects of my invention are to provide a sprocket-and-chain mechanism for raising and lowering awnings which shall be so constructed and arranged as to permit of the usual adjustments to take up any slack in the chain and also provide for locking the mechanism to support the awning at any elevation, as well as lock it in its raised and lowered positions, this latter being accomplished bya peculiar arrangement of reversible pawl adapted to engage the links of the sprocket-chain at either side of the sprocket.

With these and other objects in view my invention consists in the particular construction of the parts of the device and their combination, all as hereinafter fully described, and more specifically set forth in the appended claims.

In the drawings, Figure 1 is a side elevation showingthe application of myinvention. Fig. 2 is a front elevation of the sprocketand-chain'device with the sprocket-case in section. Fig. 3 is a rear elevation to show the manner of connecting V the adjustable sprocket-case to the wall-plate. Fig. 4 is a detail top viewof the sprocket-case.

Similar letters of reference indicate similar parts in the several views of the drawings.

A designates the rotatable pole,upon which the awning is wound, as is usual, and B designates the sprocket-wheel, made fast to one end of said pole and over which passes a sprocket-chain O, which latter forms a part of my improved operating device.

D designatesa wall-plate upon which is adjustably mounted a sprocket-case E, carrying the operating sprocket-wheel F, around which passes the chain 0 from the sprocketwheel B. The wall-plate is pierced at suitable points, as at d, for the passage of the securing bolts or screws, and at its upper and '50 lower ends is provided'with rearward flanges d, adapted to locate the rear face of the plate a slight distance from the wall or other sup space in the rear of the plate for the means by which the sprocket-case is connected thereto. Said wall-plate is also provided at its side edges with rearWardly-proj ecting flanges d one or bothhaving an opening or slot 01 at its upper end for the passage of the pin G, which latter engages apertured ears e 6, projecting from the sprocket-case through slots 01? in the wall-plate. The pin G extends across the'back of the plate between the ears and is held in place by the flanges d when the sprocket-case is lowered to bring the ears e below the slots or openings in said flanges. To provide for adjusting the sprocket-case vertically and hold it in such adjusted position, it is provided with a threaded rod H, passing through a bifurcated lug d on the front of the wall-plate, and upon. which rod is a nut h bearingagainst said lug. By screwing the nutupon the rod the sprocketcase is lowered and will consequently tighten the chain 0. v

The sprocket-case E is preferably cylindrical in shape, and the front wall thereof is provided with a central opening 6, forming one of the bearings for the sprocket-wheel F. The sprocket-case is open at its rear for the purpose of placing the sprocket-wheel thereinto, and said rear side is covered by a plate I, also provided with a central opening to form the other bearing for the sprocket-wheel. When the sprocket-case is mounted on the wall-plate, the removable plate will be held in place by said wall-plate. The upperend of the sprocket-case is provided with openings e e for the passage of the sprocketchain 0, and between these openings is formed integral with the sprocket-case a rearwarrllyprojecting pinj, upon which is loosely mounted a gravity-pawl M, which latter is held in place upon the pin by means of a bifurcated lug i, projecting from the upperend of the plate I and straddling the end of the pin. The throw of this pawl in either direction is limited by the edges e*- at the outer sides of the openings 6 By locating the pawl between the chain it may be caused to engage said chain ateither side of the sprocketwheel, so that the device may be applied either right or left, and the pawl may engage any link of the chain to support the awning at any elevation.

The sprocket-wheel F is provided with the usual square opening in the hub, or the latter may be key-ended for the engagement of a crank-handle for turning said sprocketwheel.

The operation is similar to that of the ordinary sprocket-and-chain mechanism for raising and lowering awnings, the pawl M being thrown over against the ascending part of the chain during the operation of raising the awning, and to lock the parts said pawl is thrown over to engage one of the descending links by which it is carried against one of the edges e of the sprocket-case and prevents further movement of the chain. By this manner the pawl firmly locks the chain and cannot be unlocked without turning the sprocket wheel F. This particular pawl mechanism is therefore efiectual in preventing any tampering with the device. It will also be noted that by theparticular construction of the parts and manner of connecting the same, as herein shown and described, the device can be readily taken apart for any purpose and that in use it is compact, strong, and durable.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a device for operating awnings, the combination of a wall-plate having rearward flanges to leave a space in rear of same and provided with slots, a sprocket-case having apertured ears projecting through said slots, a pin extending across the back of the wallplate between and into said ears, and flanges on the wall-plate adapted to hold said pin in place.

2. In a device for operating awnings, the combination of the wall-plate having slots therein, a sprocket-case having apertured ears adapted to travel in said slots, a pin extending across the back of the wall-plate between and into said ears, flanges on the wallplate adapted to hold said pin in place, and means for adjusting the sprocket-case.

3. In a device for operating awnings, the combination with the sprocket and chain, of a pawl pivoted between the chain and adapted to engage the links of the same at either side of the sprocket-wheel.

4. In a device for operating awnings, the combination with the sprocket and chain, of a casing carrying the sprocket and having openings for the passage of the chain, a pin formed integral with the casing and located between said openings, apawl loosely mounted on said pin, and a covering-plate having a bifurcated lug straddling the outer end of the pin to hold the pawl in place, said pawl being adapted to engage the links of the chain at either side of the sprocket.

In testimony whereof I sign my name to this specification in the presence of two subscribing witnesses.

CHARLES II. TALLEY.

Witnesses:

J UDSON D. FRESCH, A. D. CADWALLADER.

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