US2723383A

US2723383A - franz

Info

Publication number: US2723383A
Authority: US
Publication date: 1955-11-08
Anticipated expiration: 1972-11-08

Description

E. E. FRANZ LAMP MOUNTING Nov. 8, 1955 Original Filed NOV. 3, 1950 M/l/NTOR E. E. FRANZ ATTORNEY United States Patent LAMP MOUNTING Erwin E. Franz, Cranford, N. J., assignor to Western Electric Company, Incorporated, New York, N. a corporation of New York Original application November 3, 195% Serial No. 193,921. Divided and this application September 12, 1951, Serial N 0. 246,192

1 Claim. (Cl. 339-176) This invention is a division of my copending application Serial Number 193,921, filed November 3, 1950, now Patent No. 2,698,461, and relates to lamp mountings more particularly those employed in telephone switchboards.

The conventional lamp mountings for switchboard lamps are usually composed of frames, insulating strips, contact springs and terminals secured together by the aid of screws, and with assemblies of this nature, particularly the handling of various parts for assembling, the contact springs and/or terminals become bent necessitating testing of the lamp assembly prior to use.

An object of the invention is to provide a lamp mounting which is simple in structure, highly efiicient for the purpose intended, and free from accidental disturbance of the conductive elements during handling.

In accordance with theobject of the invention, the lamp mounting is composed of a body of molded dielectric material having a lamp receiving aperture at one end, an aperture extending transversely of the lamp receiving aperture intermediate the ends of the body whereby the inner ends of the contacts having portions molded in the outer portion of the body may be free to grip the lamp and form electrical contact therewith.

Other objects and advantages will be apparent from the following description when considered in conjunction with the accompanying drawing wherein:

Fig. 1 is a side elevational view-of the lamp mount- Fig. 2 is a longitudinally sectional view of the lamp mounting; and

Fig. 3 is a lateral sectional view taken along the line 3-3 of Fig. 1.

Referring now to the drawings, it will be noted that the lamp mounting includes a body molded of a dielectric material made hollow through the center portion thereof, while one end 11 is formed to receive a switchboard lamp. Aligned apertures 12 are formed in the body intermediate the ends thereof to receive the inner ends 14 of spring contacts which are initially formed of a single resilient element substantially U-shaped in 2,723,383 Patented Nov. 8, 1955 general contour. This is to facilitate in the molding of the body 10 with the legs of the resilient element positioned so that the central portions thereof will be embedded in the material of the body. The connecting portion of the resilient element is not shown, only the remaining inwardly bent ends 17 after the connecting portion has been removed by a punching operation. A laterally extending projection 18 formed integral with the body 10 and having an aperture 53 therein may be employed in securing the lamp mounting in place.

The inner ends of the resilient members 14 may engage opposing sides of the switchboard lamp when moved into the socket 11. The resilient elements are at all times free to move relative to each other during the in sertion or removal of a switchboard lamp, yet these resilient members are protected against any possible damage due to handling.

It is to be understood that the above described arrangements are simply illustrative of the application of the principles of the invention. Numerous other arrangements may be readily devised by those skilled in the art which will embody the principles of the invention and fall within the spirit and scope thereof.

What is claimed is:

A lamp mounting comprising elongate wire-like resilient contacts with outer ends thereof bent in substantially circular general contour for electrical connections With conductors, with inner ends thereof bent outwardly to receive a lamp therebetween and with intermediate portions having fractional lengths thereof ofiset from each other to eliminate turning of the contacts when said intermediate portions are embedded in a molded body, and an elongate body of dielectric material molded With said intermediate portions with their offset fractional lengths embedded in one end of the body, said body also being molded with a lamp receiving aperture extending longitudinally therein from the other end thereof and laterally extending apertures intermediate the ends of the molded body opening to the lamp receiving aperture and adapted to partially house the inner ends of the contacts and allow free flexing movements thereof.

References Cited in the file of this patent UNITED STATES PATENTS 667,462 Scribner Feb. 5, 1901 1,244,475 Currier Oct. 30, 1917 1,568,156 Herskovitz Jan. 5, 1926 1,696,865 Schellenger Dec. 25, 1928 1,697,329 Schraig Jan. 1, 1929 2,032,232 Strickland Feb. 25, 1936 2,157,919 Reese May 9, 1939 2,185,193 Hanson Jan. 2, 1940