US1072460A

US1072460A - Plug-socket electrical connector.

Info

Publication number: US1072460A
Application number: US72864512A
Authority: US
Inventors: William F Hoffmann
Original assignee: American Electrical Heater Co
Current assignee: American Electrical Heater Co
Priority date: 1912-10-30
Filing date: 1912-10-30
Publication date: 1913-09-09
Anticipated expiration: 1930-09-09

Description

W. F. HOFFMANN. PLUG SOCKET ELECTRICAL CONNECTOR. APPLICATION FILED OUT. 30, 1912.

1,072,460. Patented Sept. 9,1913.

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WILLIAM F. HOFFMANN, 011' DETROIT, MICHIGAN, ASSIGNOR TO AMERICAN ELECTRICAL HEATEfi COMPANY, 013 DETROIT, MICHIGAN, A CORPORATION 3F MICHIGAN.

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PLUG-SOCKET ELECTRICAL CONNECTOR.

Patented Sept. 9, 1913.

Application filed October 30, 1812. Serial No. 728,645.

To all "whom it may concern Be it known that I, V] 111mm F. Horn MANN, a citizen of the United States of America, residing at Detroit, in the county ott' l v ayne and State of Michigan, have invented certain new and useful Improvements in Plug-Socket Electrical Connectors, of which the itollowing is a specification, reference being bad therein to the accompanyinc; drawings.

The invention relates to electrical connectors such as are employed for connecting electrically-heated sad irons and other instruments, and the invention consists in the peculiar construction of the socket member for receiving the plug, and the means employed for preventing arcing between the contacts, or rattling of the plug in the socket.

In the drawings: Figure 1 is a side elevation of the connector as applied to an electrically heated sad iron, showing the plug, in disengaged position. Fig. 2 is asimilar views-showing the plug:v electrically connect-- ed; 3 iso sectional view ofthe guide "socket on line ar----ar Fig". 1.

A is the body of an electrically-heated sad iron; ll is thehandle therefor; C are the terlnii'ial contacts rojectingout from the body, through insulating bushings D; E is the connector plug; recessed to receive the terminal C; and F is the flexible conductor attached to said plug.

To guide the plug when. it is engaged with the terminal contact and to mechanically support the same so as to relieve the stress from said contacts, a guide socket G is pr,ovidod, which is preferably attached to the handle B as shown. Thismcmber G is pretcrahly struck up fronaisheetmctul, and comprises an annular portion-G and'a scouring shank portion G ,Ihe arrangement is such that when the end of the plug is inserted in the guide socket, said plug will be properly alined with the contact members 0, so'as to effect" thefcouphng-by merely pressing down {the 'plug; and in the same manner the plug may be electrically disconnected by drawing it out from the socket member.

With the construction as thus far described, there is danger that the plug may be withdrawn out of full contact with the momher 0 While still retained in the socket G. This is objectionable for the reason that there may be arcing between the contact C of the circuit to avoid arcing. This consists of a resilient member H secured to the guide socket G so as to normally project laterally Within the same, and in a position. to inter cept the plug E and "to prevent it from being retained in the socket. If the plug is pressed downward with suflicient force, the member II will be deflected and will lie adjacent to the side of the plug, between the some and the inner face of the socket G. In this position it exerts its tension against the plug and forms an anti-rattling device. On the other hand, whenever the plug is withdrawn from the contacts 0 before electrical connection is broken, the lower end of said plug will be raised to a point to release the member H, and the tension of the latter in returning to its normal position will efl'ect a quick breaking of the electrical circuit, and the pushing of the plug out of mechanical engagement with the socket.

As shown, the member H is formed of resilient Wire, having coils H therein, which are located in apertures I in one side of the socket G, thereby permitting the member to lie flat adjacent to one side of said socket.

What I claim as my invention isr 1. In a socket for supporting a contact plug for an electrical connection, a resilient member secured to said plug, said resilient fmpmber a opted to en age the bottom portion of the plug to lejptlt the said plug member after the eloctr al connction has been broken. 7

2. In a socket for supporting a contact plug for electrical connection, contact members extending within said socket, a resilient member secured to the socket, said resilient member positioned above the contact member and adapted to eject the plug member after the electrical connections have been broken.

3. In a socket member for supporting a contact plug, a spring anchored at its ends to the'side of the socket and the intermediv and extending transversely of the socket in 7 its normal position and parallel with the socket'when the electrica connections are coupled.

5. In a socket for supporting a contact plug for electrical connection, a spring member within said socket, said spring member adapted to eject the plug member when the contacts are uncoupled.

6. In a socket for supporting a contact for electrical connection, said socket having a spring therein, the said spring adaptedto nection is broken to eject the said contact plug.

In testimony in presence of tWo witnesses. WILLIAM F. HOFFMANN. Witnesses:

HARRY W. LUYoKE, GEORGE S.v ToWAR.

. Copies of this patent may-be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. 0.. I

whereof I affix my signature