US1018934A - Electric-light switch. - Google Patents

Description

G. P. SMITH.

ELECTRIC LIGHT SWITCH.

APPLICATION rum) MAY 19, 1911 1,018,934. Ptgifid Feb.-27, 1912.

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CLAUDE I. SMITH, 01? OAK PARK, ILLINOIS.

ELECTRIC-LIGHT SWITCH.

Application filed May 19, 1911.

To all whom it may concern:

Be it known that I, CLAUDE P. SMITH, a citizen of the United States, residing at Oak Park, in the county of Cook and State of Illinois, have invented new and useful Improvements in Electric-Light Switches, of which the following is a specification.

The invention relates to an extension switch for electric light snap buttons, having reference particularly to a form of switch including an operating pull cord disposed within easy access to obviate the usual necessity of reaching to the globe snap button, said globe being generally placed in a comparatively high position for purposes of light distribution and safety.

The object of the invention is the provision of a simple, effective extension switch which can be quickly sprung on and disengaged from the ordinary type of incandescent light snap but-ton by any inexperienced person.

The novel features of the invention are embraced in a weighted arm, normally out of operating connection with the snap button and operable by a pull cord, and in a locking roller to cause operating connection of said button and arm in a downward pull on the cord.

The invention comprises the novel con struction and arrangement of parts now to be described, reference being had to the accompanying drawings, in which like reference numerals refer to like parts.

In the drawings, Figure 1 is a side elevation showing the improved switch operatively connected to the snap button of an electric light'globe. Fig. 2 is a rear elevation, partly broken away, showing the locking roller and cooperating parts; and Fig. 3 is a view of several details. Fig. 4 is a transverse section on line 83 of Fig. 1.

Referring to the drawings, 1 denotes the means whereby the extension switch is attached to the snap button 2 of an electric light globe, being preferably in the form shown comprising a metal spring clip, approximately U-shape in cross section and 0 such dimensions as to inclose and firmly grip said button when sprung on the latter. Fixedly connected to clip 1 and extending rearwardly therefrom, is an operating shaft 3, on which, spaced from clip 1 by a Washer 4, is loosely mounted a switch lever 5, a' washer 6 spacing the latter from the headed end 7 of the shaft 3, that port-ion of the Specification of Letters Patent.

Patented Feb. 2'7, 1912.

Serial No. 628,186.

latter engaging washer 4 and clip 1 being of rectangular formation and the remaining portion cylindrical. Switch lever 5 is provided at its lower terminal with a. weight 8 tending to maintain said lever in upright position and to return it to said position when displaced therefrom through a pull on cord 9 attached to the upper terminal of the lever, said terminal being slightly curved to insure the pull cord hanging spaced from the body of the lever and freely operable. Formed in an expanded port-ion 10 of lever 5 contiguous the bearing therein of shaft 3, is a cam slot 11, narrowing toward its lower endand disposed in angu lar relation to the vertical when the lever is in upright position, said slot housing a locking roller 12 adapted for limited movement therein, washers 1 and 6, abutting the opposite faces of said portion respectively, and preventing accidental displacement of said roller and maintaining the parts in operative relation. The slot 11 and roller 12 are of such dimensions that the latter will contact with and lightly bear against the shaft 3 and that side of the slot opposite said shaft, permitting, when cord 9 is pulled, partial revolution of the lever on the shaft, said lever, through the action of roller 12 as slot 11 moves in said partial revolution, being forced into binding contact with said shaft which, during a continued pull on cord 9 will turn clip 1 and inclosed button 2 and snap the light on. Upon release of cord 9 weight 8 will return the lever to normal upright position, roller 12 being released in the initial movement of said return operation from binding contact with slot 11 and shaft 3 the latter with attached clip 1 and button 2 incidentally remaining stationary. At the termination of the return movement of lever 5 the device is in position, upon another pull of cord 9, to further turn button 2 and snap the light off, said light being thus of course alternately turned on and off respectively, by successive pulls on cord 9.

Having thus described the invention, what is claimed as new, is:

1. An extension switch for electric snap buttons comprising a resilient button-engaging clip, a shaft fixed to the clip, a. lever mounted for limited revolution on said shaft and means carried by the lever to bind the lever to the shaft in the movement of the former in one direction.

movement of the lever in one direction to bind the latter to the shaft and to release the shaft and lever from binding engagement in the movement of the lever in the opposite direction.

3. An extension switch for electric snap buttons comprising a resilient button-engaging clip, a shaft fixed to the clip, a lever carried by the shaft, and connected to a cord and a weight adapted respectively to move said lever in opposite directions, and means carried by the lever and adapted to bind the shaft-to the lever in the cord-influenced movement of the lever and to release the shaft and lever from binding engagementin the weightinfluenced movement of the latter.

4. An extension switch for electric snap buttons comprising a resilient button-engaging clip, a shaft fixed to the clip, a lever mounted for limited revolution on said shaft and provided with a cam slot, a cord connected to the lever and adapted to move the same in one direction, a weight carried by the lever and adapted to move the latter in an opposite direction, and a locking roller carried by the slot and adapted to bind the lever to the shaft in the cord-influenced movement of the lever and to release the shaft and lever from binding engagement in the weight-influenced movement of the lever.

5. An extension switch for electric snap buttons comprising a resilient button-engaging clip, a shaft integral with said clip, a

lever mounted for limited revolution on said shaft, a ball clutch intermediate said lever and. shaft, a cord connected to one end of said lever and adapted to move the same in one direction, a weight carried by the opposite end of said lever and adapted to move the latter in an opposite direction upon the release of the cord, said ball clutch adapted to operatively connect the lever to the shaft in the movement of the former under the influence of the cord and to disconnect said lever and shaft upon the release of the cord under the influence of the weight.

6. An extension switch for electric snap buttons comprising a resilient'button-engaging clip, a shaft formed integral With the clip, a lever having an expanded medial portion, said expanded portion adapted to i receive said shaft and provided with a cam slot, washers-mounted upon said shaft and engaging the opposite sides of the expanded medial portion of the lever, a locking roller carried by the slot and held therein against lateral displacement by said washers, a cord secured to one end of the lever and adapted to move the same in one direction, a weight carried by the opposite end of the lever and adapted to move the latter in an opposite direction, said locking roller adapted to bind the lever to the shaft in the movement of the latter under the influence of the cord and to release the shaft and lever from binding engagement upon the release of the cord and under the influence of the weight.

In testimony whereof I affix my signature in presence of two witnesses.

CLAUDE P. SMITH. Witnesses R. W. ANDER, R. W. KEMPER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. 0.

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