US881683A - Electrical socket-seal. - Google Patents

Description

PLTENTED MAR.- 10,1908.

- L. T. HATFIELD. ELECTRICAL SOCKET SEAL.

APPLICATION FILED AUG-3, 1906.

woantoz LLEWELLYN "r, HATFIELD, or SACRAMENTO, CALIFORNIA.

ELECTRICAL SOCKET-fiEAL.

' Specification of Letters Patent.

Patented March. '10, 1908.

Application filed August s, 1900. 1 Serial No. 329,120.

To all whom it may concerni .Be it known that I, LLEWELLYNT. HAT- 1 FIELD, a citizen of the United States, residing in Sacramento, in the county'of Sacramento and State of California, have invented certain new and useful Improvements 1n Electrical Socket-Seals, of which the following is a specification;

This invention relates to electrical socket seals.

In an application filed by me on the 4th day of October '1905, serially numbered 281 ,290, I have claimed broadly a device for.

lamp, plug or the like to be fitted into thesocket when the sealing device is in place, and at the same-time prevent electrical con nection with the contacts of the socket being made without; destroying the seal in whole,

or in part.

Other and further objects Wlll appear in the following description and will be more particularly pointed out in the appended claims.

In the drawing: Figure .1 is an elevation of a key socket partly in section. 2 is a plan view of the seal Fig. 3 is a plan view of another form of seal for accomplishing the same purpose.

Referring particularly to the drawings 2' 1 indicates a disk of a size to fit within the socket 2, provided. with slits 3 preferably radial, and a central erforation 4. Extending radially from the disk each betweena pair of slits are extensions 5.

The device may be made of metal stiff enough to permit the extensions 5, when bent at an angle 'to the disk, to expand against the inner wall of the socket 2 and prevent the removal of the disk, except'upon destruction of the device. Of course the destruction of the device by distortion or other wise, would notify the company that access had been had to the current and the company could then charge for the current in accordance with its rules. .To remove this devicefa hooked or pointed tool is introduced into the perforation 4 and the device is then manner to indicate the date of the pulled out. In being pulled out, it is, owing to the radial slots, destroyed to-such an eX-' tent that further use is impossible. The extensions do not interfere with the insertion of the plug 9 of the lamp or other device, yet electrical connection with the-contacts of the socket cannot be made, as the disk is either spaced from the inner contact, or has its-inner face covered with insulating material as shown'at 7. The insulating material closes opening 4 and prevents a wire being introduced therethrough.

If desired, the device may b'e'rnade entirely of an insulating material. In all forms, the perforation 4 should be covered inside or out with any suitable material toprevent access to the contacts therethrough.

In the form shown in Fig. 3, the radial extensions are dis ensedwith, making the device circular in orm. The devicemay be of such a size to fit tightly the walls of the socket so that it cannot be removed except upon the destruction or distortion of'the same.

Both formsmay be-made of paper, paper mach, or similar ma'terial, and in this case, may be secured in the socket by an adhesive, as shown 'at 6. v

The device can be marked in any suitable sealing, as shown-at 8. r

Having thus described my invention, what I claim as new therein and desire to secure by Letters Patent is 1. The combination a with an electrical socket, of a sealing device arranged in said socket, permitting the insertion of a current consuming plug and reventing electrical connection with the soc et contacts.

2. The combination with an electrical socket, of a sealing device held in said socket to prevent access to the socket contacts and provided with slits preventing the removal of the device exce t'upon destroying'the device.

3. The combination with an electrical socket, of'a sealing device held in the socket to prevent access to the socket contacts and provided with means preventing the removal of the device except upon destroying the device.

4. The combination with an electrical socket, of a sealing disk arranged. in said socket to prevent access to the socket con-' tacts and provided with radial slits.

5. The combination with an electrical socket, of a non-conducting disk held against one of the contacts of the socket between the contact and the mouth of the socket.

6. The combination with an electrical socket, formed to receive a current consuming plug, of a non-conducting sealin device arranged in the socket to prevent electrical connection between the contacts of the plug and the contacts of the socket.

7. 'A sealing device constructed to fit within an electrical socket, comprising a non-conducting disk provided with slits, which render it compressible to permit it to be forced into the socket, and automatically exp ensible to cause it to engage with lhe socket when introduced.

8. A sealing device constructed to fit within an electrical socket, comprising a nonconducting disk provided with radial slits, which render it compressible to permit it to be forced into the socket, and autonntticnlly expensible to cause it to engage with the socket when introduced.

9. The combination with the socket, and 2t lamp plug, of e non-conducting scaling disk interposed between the hnnp plug and a socket contact.

Theforegoing specificeltion signed at Sueramento California this 20th day of July, 1906.

LLEWELLYN T. I-lATFlEliD.

In presence of two witnesses V. L. HATFIELD, CORA BARNES.

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