US781351A

US781351A - Electric-lamp socket.

Info

Publication number: US781351A
Application number: US19730004A
Authority: US
Inventors: Mortimer Norden
Original assignee: JOSEPH NORDEN
Current assignee: JOSEPH NORDEN
Priority date: 1904-03-09
Filing date: 1904-03-09
Publication date: 1905-01-31
Anticipated expiration: 1922-01-31

Description

PA'TBNTED JAN. 31', 1905;

M. NORD-EN ELECTRIC LAMP SOCKET.

' APPLICATION FILED MAB. 9, 1904. I

" suitable insulating material; 6, the base, also A central UNITED STATES Y Patented January 31, 1905. v

PATENT OFFICE.

MORTIMER NORDEN, OF

ELECTRIC-LAMP SOCKET.

SPECIFICATION. forming part of Letters Pat ent No. 781,351, dated January 31 1905.

To a, whom, it 77mg concern:

wires without permanently injuring'the wiresv or their covering, such as shown in Letters Patentgranted to me April 22, 1902, No. 698,218; and my invention is an improvement upon the socket shown and described in said patent. metal screw-sleeves shown in said patentmay be dispensed with and that the devices employed in said patent for holding the socket to the cup other than the devices which form the electrical connection with'the conductors may also be omitted.

In my present invention I make use of a cup of insulating material, a base of insulating-material, and a metal socket within the cup. .The adjacent and opposing faces of the cup and base are provided-with parallel recesses, forming channels for the conductors.

The device that holds these parts together also acts to clamp them to the conductorsat anydesired point. In the lower portion of the cup there are two perforations, through which pass pointed devices for making electrical contact with the conductor-wires. The head of one of these'pointed devices is in contact with a lug upon the metal socket within the cup, and there is a plate adapted for central contact with the electric lamp, and the head of the other pointed device is in contac with this plate.

In the drawings, Figure 1 is a vertical section representingmy improvement. 'Fig. 2

isa plan of the same, and Fig. 3 is an invert-' ed plan of the cup.

at represents the cup of porcelain or other of suitable insulating material.

hole is made in the base for the stem of the I have found in practice that the Application filed March 9, 1904. Serial No. 197,300.

bolt 0, and a central hole 2 is made in the cup a of varying sizes not only for the stem of I receives the base of the incandescent electric lamp, the said metal socket making electrical contact with the periphery of the lamp-base. This metal socket f is provided with a lug 5 at the base at right angles to the surface of the socket. There is a hole in this lug registering with one of t e perforations 6 in the lower portion of the cup. A screw 71, having a sharp point, is passed through the hole in the lug 5 of the metal socket f and through the per foration 6 in the lower portion of the cup and is held in place by anut 8, which nut fits into a recess formed in the cup for that purpose. The head of this screw 1; rests upon the lug 5 of the metal socket f when the said screw is screwed down into contact withthe conductor d, and thus serves to hold the metal socket f to the cup, as well as to make metallic contact between the metal socket and the conductor cl.

I employ a metal plate h, which rests ina depression of the inner surface of the cup and free from electrical connection with the'metal socketf, but forming a central contact with the electric lamp, and this plate it is perforated for the passage of the screw'dformedlike the screw c. The screw 2' is passed through the perforation 7 in the lower portion of the cup and is held in place by a nut 9,"which nut is fitted intoarecess formed in the cup similar to that provided for the nut 8. The screws 6 z" are rotated until their points pass through the coverings of the conductors c and make contact metal to metal with the wires of the conductors, thus carrying the electric current to the lamp. The apertures made in the cov-' erings of the conductors by the points of the screws are so small that the conductors are not injured and are adapted for repeated use. I

I claim as my invention 1. The combination with a cup having perforations in the bottom and a base of insulating material, and means for receiving electric conductors between the said parts, and a clamping device for holding the conductors thereto, of a metal socket within the cup of insulating material, a central metal plate, pointed devices passing entirely through said perforations and through perforations in the socket and plate, and adapted to penetrate the covering of the conductors, and means adjacent to the outer surface of the cup for holding the pointed devices in a fixed position, sub stantially as set forth.

2. The combination with a cup having perforations in the bottom, a base of insulating material, and coinciding recesses receiving electric conductors between said parts, and a clamping device for holding the conductors thereto, of a metal socket within the cup of insulating material, a central metal plate, screws passing entirely through said perforations and through perforations in the socket and plate with the heads of the screws coming above the parts of the socket and plate engaged thereby and the pointed ends adapted to penetrate the covering of the conductors and nuts engaging the threaded ends of said screws and located within the recesses of the cup for holding the screws in a fixed position, substantially as specified.

Signed by me this 7th day of March, 1904-.

BIORTIMER NORDEY:

\Vitncsscs:

Geo. T. PINekNnY, BERTIIA M.,ALLEN.