US1103006A - Swiveled attachment-plug. - Google Patents

Description

F. E. SHELBY.

SWIVELED ATTACHMENT PLUG.

APPLICATION IILED JULY s, 1908 1,103,006, Patented July 7, 1914,

WITNES E5 7? 6 ATTORN EY$ UNITED STATES PATENT OFFICE.

FRANK E. SIEELEY, F BRIDGEPORT, CONNECTICUT, ASSIGNOR To THE BRYANT ELECTRIC COMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORATION OF CONNECTICUT.

SWIVELED ATTACHMENT-PLUG.

Patented July *7, 1914.

Application filed July 8, 1908. Serial No. 442,504.

To all whom it may concern Be 1t known that I, FRANK E. SEELEY, a

citizen of the United States of America, re-

110 simple siding in the city of Bridgeport, in the county of Fail-field, in the State of Connectiout, have invented acertain new and Improved Swiveled Attachment-Plug,of which the following is a specification.

The object of my invention is to provide a and efficient electrical attachment plug which shall be small and convenient. have a. swiveling action, and be at the same time detachable. This object I attain by the construction which I will now describe.

In the accompanying drawings Figure 1 is a side elevation of my swiveling detachable plug in place in its socket, which is shown in section; Fig. 2 is a section of the plug on the line 22, Fig. 5; Fig. 3' is a sec-v tion of the plug on the line 3-3, Fig. 5; Fig. 4 is a section on the line 4-4, Fig. 2; Fig. 5 is a sectional view of the plug on the line 5-5, Fig. 2; Fig. 6 is a plan view of the socket. V

The socket part of my device will be understood upon reference to Figs. 1 and 6, and comprises an Edison screw shell S having secured to its outer margin at the open end, a collar S of insulating material preferably corrugated around its circumference, while the opposite end of the shell is closed by an insulating button I) carrying a central contact piece E. This Contact piece has a contact surface a" on its. outer face to make contact with a cooperating connection in the socket or receptacle into which the socket S is screwed, while on the inner face of the button D the cont-act piece E has a spring finger e to act upon the central contact 15 of my detachable swiveling plug F. To the periphery of the button D are secured (clamped between the button and the screw shell) spring fingers (Z to make contact with the shouldered portion of a contact shell G'or. the plug F. The body not this plug is of insulating material and ma y conveniently though not necessarily be provided with an enlarged head I) with shoulder 7) to bear on the mouth of the screw shell S, but has a cylindrical extension of reduced diameter carlated wires and also for the reception of the metallic segment h, Figs. 2, 3 and 4.' This segment alds 1n mechanically holding the contact shell G in place and in receiving the binding screw 10, for that wire' end which makes electrical contact with the shell G, (Fig. 2). Twoscrews 11, .12, threaded at diametrically opposite points into the segment 71, Fig. 4, have heads bearing on the shell (it, holding it to the cylindrical portion of the plug. The shell G has an annular beveled shoulder 13 to cooperate with the spring fingers or clips d to lnake electrical connection between the shell G and screw shell S and to mechanically hold the plug in place, while permitting free rotationor swiveling of the socket upon the plug. I prefer to strike up from the wall of the contact shell G a finger 14, Figs. 1 and 4, under which the wire may be passed in its way to the binding screw 10 to afford a strain relief ends and said screw 10.

" to the connection between the ba-red wire 1 The central contact for the plug is formed I by a central plug 77 riveted into a central hole in the end of the cylindrical insulating body, this plug being tapped at its outer end to receive the threaded binding screw 15. The outer end of this plug is recessed out to form a well to receive the bared ends of the wire strands coiled about the screw 15, Fig. 5. The wall 16, which forms this recess, is cut away at a JOlIlil some distance away from the hole 17, through which the wire comes out through the end of the plug body, and consequently the carrying of the wire strands partially around the projecting end of the plug 72. as shown in Fig. 5, provides a strain relief for that wire in the same way the finger 14 provides .a strain relief for the other wire.

I claim as my invention 1. The combination of a detachable swivcling attachment plug with an open ended receiving'socket, comprising spring cont-act fingers to receive and hold the swiveling plug, a screw shell, an insulating ring secured on the outside of the open end of the .shell and an insulating button closing the opposite end, said button carrying a central contact with inner and outer contact faces.

2. The combination of a swiveling attachment plug having a central contact and a receiving socket comprising a screw shell, an insulating ring secured on the outside of the,

rying spring fingers and also a central contact with inner and outer contact faces.

3. An attachment plug, comprising a hollow insulating body with a metallic segment.

therein, an outer contact shell, securing means for the latter entering the segment, and a binding screw also threaded into the segment, and central contact on the plug.

4. An attachment plug comprising a hollow insulating body with a longitudinal opening for a wire and having a side contact with bindnig screw and a central end contact in the form of a binding screw for the wire 15 through the longitudinal opening in the body. 1 I

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

F. E. SEELEY. Witnesses:

A. J. WATERHOUSE, H. W. GOLDSBOROUGH.

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