US1298623A

US1298623A - Electric attachment-plug.

Info

Publication number: US1298623A
Application number: US19765117A
Authority: US
Inventors: Carl Zeigler
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-10-20
Filing date: 1917-10-20
Publication date: 1919-03-25
Anticipated expiration: 1936-03-25

Description

. C. ZEIGLER.

ELECTRIC ATTACHMENT PLUG..

APPLICATION FILED 0CT.20. I917- Patented Mar. 25,1919.-

awua-mtoz Carl Zefyier;

MW m M m.

UNITED srArrEs PATENT only-o ELECTRIC ATTACHMENT-PLUG.

the invention is to provide improved means.

' for attaching and detaching the plug to the socket without turning the plug and thus avoiding twisting of the wires.

Another object of the invention is to provide a pair of movable members or prongs within the plug with means for projecting their ends therefrom to engage the screw threads in the socket to hold the plug therein.

Another object of the invention is to provide a device of this character which is simple and durable in construction, reliable and efficient in operation and one which can be manufactured and placed upon the marketat a minimum cost.

The invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a longitudinal section of the plug made in accordance with my invention.

Fig. 2 is a view of the other half of the plug.

. Fig; 3 is a perspective view of the operating parts removed from the plug.

In: these views 1 represents the plug which is made of any suitable insulating material, such as porcelain or the like. I prefer to form .this plug of two sections which are removably secured together by the bolt 2. though if desired the two parts Specification of Letters Patent. k Application filed October 20, 1917. Serial No. 197,651. r

lower end of each, I

groove 6 to which the wires=leadingzto the lamp pass. The section '.7-.--whichcontains the chamber 4 carriesthetoperating rmecha having its lower part bentinto substantially U shape and the upper part of the U being extended and bent at right angles to lie vertically in the groove 5 and having its extreme end bent again at right angles to ex tend across said groove. This extreme end and the adjacent end of the upper member of the U are provided with alining openings to receive the L-shaped rod 9. The horizontal part of this rod extends parallel with the limbs of the U-member and the connecting member of the U is cut away'to permit the rod to have sliding movement thereagainst and adjacent its upper end said member is provided with a slot 10 to receiv said rod, said rod being forced into the slot by a spring 11 connected with the lower limb of the U. This spring also holds the rod in vertical engagement with the vertical part of the U. A slot 12 extends through the wall of the plug to receive the-end of the horizontal part of the rod 9. and a button 13 of insulating material is secured to the perend of the rod 9 has secured thereon an angle iron 14c to which are pivoted'the prongs 15. As will be seen the prongs lie horizontally in the recesses 3 and due to the inclined bottoms of said recesses when the L-shaped rod is lowered said prongs will lie entirely within the recesses but when said rod is pushed upwardly the prongs will be projected from the recesses. The lower limb of the U is provided with a screw 16 to receive the wire 17 leading to the lamp and the other wire 18 is connected'with a contact 19 which is connected with the central contact 20 by a wire 21 which lies in a groove 22 in the section 7 of the plug.

It will thus be seen that when the button is given sliding movement upwardly against the wall of the plug it will move the L- shaped rod vertically to project the ends of the prongs from the plug and" these prongs will engage the grooves of the ordinary socket and thus retain the plug in position i in the socket. As the rod reaches the end of its travel the spring 11 will force it into the slot 10 and thus hold the parts in engaging position. 'When it is desired to re move the plug from the socket the button is 'nism which comprises a- .-f; rame 1'8 o'f'inetalk'.

given a slight side-Wise movement to move the rod from the slot and said button is moved downwardly to Withdraw the prongs. In this Way the plug may be easily and quickly attached and detached from the socket without turning the same, as in the case'of a screw threaded plug, and thus avoiding twisting of the WIIBS;

It is thought from the foregomg description that the advantages and novel features having a recess therein adapted to receive the red at the end of-itsj-upward movement,

What I claim is p 4 I A plug of the class described having a chamber therein, transverse recesses in its upper end, a frame-work within the chainher, an L-shaped rod slidably mounted within the rame-Work and having one end extending beyond the walls of the plug, a sliding button on said end, said frame-Work a spring for forcing said rod into the. recess, and-a'pair of prongs pivoted to the upper end of the rod and lying. in the transverse recesses in the plug.

In testimony whereof I afiix my signature.

CARL ZEIGLER.