US1950563A - Electric switch - Google Patents

Description

March 13, 1934. v, MlLLER 1,950,563

ELECTRIC SWITCH Filed Aug. 16, 1933 2 Sheets-Sheet 1 Q. T w 5 [warrior f1 llorney March 13, 1934. v. H. MILLER ELECTRIC SWITCH Filed Aug. 16, 1933 2 Sheets-Sheet 2 Patented Mar. 13, 1934 UNITED STATES PATENT OFFICE 1 Claim.

This invention appertains to new and useful improvements in the general art of circuit makers and breakers, and more particularly to a novel switch for controlling electrical circuits.

The principal object of the present invention is to provide an electric switch which, because of its special construction, will be substantially silent in operation.

Other important objects and advantages of the invention will become apparent to the reader.

In the drawings:-

Figure 1 represents a front elevational view of the novel switch.

Figure 2 represents a sectional view taken substantially on line 22 of Figure 1.

Figure 3 represents a vertical sectional view taken substantially on line 33 of Figure 2.

Figure 4 represents a sectional view taken substantially on line 44 of Figure 3.

Figure 5 represents a perspective view of one of the contactors.

Figure 6 represents a perspective view of the hub.

Referring to the drawings wherein like numerals designate like parts, it can be seen that numeral 5 represents a casing of some suitable di-electric material, such as hard rubber, bake- -'te, or some similar material, and includes the front circular wall a and the cylindrical side wall b.

N -eral 6 represents the back wall which is provided with a pair of arcuate-shaped flanges 7'7. These arcuate-shaped flanges, as well as the back wall 6, are of (ii-electric material and the flanges 7'7 fit snugly within the cylindrical wall I) of the casing 5. Interposed between the ends of the flanges 7 are the arcuate-shaped brass contacts 8-8 which, as shown, are provided with binding posts 9 which are accessible through openings in the back Wall 6 and side wall I), as designated at 10.

Numeral 11 represents a shaft which extends through an opening in the front wall a and this is journaled, at its inner end, in the back wall 6.

Numeral 12 represents a hub which is secured to the shaft 11 between the front wall a and the rear wall 6 by a pin 13 so that the hub will rotate with the shaft, while the outer end of the shaft 13 is equipped with a control knob 14. Pintles Iii-15 project diametrically from the hub 12 and each engages into the tubular shank 16 of a corresponding arcuate-shaped contactor 17. On each of the pintles 15 is located a coiled compressible spring 18 interposed between the hub 12 and the corresponding contactor 17 for the obvious purpose of maintaining the contactor extended outwardly on the corresponding pintle and snugly against the inner side of the arcuate flanges '77 and arcuate contacts 88.

Suitable screws 20 can be employed for securing the back wall to a supporting structure and obviously, suitable screws 21 can be employed for securing the casing 5 to the flanges 7-7.

Obviously, when the contactors l717 are rotated by actuating the knob 14, there will be no clicking or snapping noise which is so common in present day types of wall switches.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the claimed as new is:

A switch of the character described comprising a back wall of insulation, a circular side wall secured to the back wall and being divided into segments of insulation and conductive material, said segments of conductive material being contacts, a front wall having a sleeve-like extension for disposition over the said side wall, said front wall and sleeve-like extension being of insulation, a shaft for disposition through the front wall, and a contactor on the said shaft between the front and rear walls for engagement with the conductor segments of the side wall.

VIRGIL I-I. MILLER.

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