US247097A - Joseph v - Google Patents

Description

(No Model.) J. V. NICHOLS & L. H. LATIMER.

ELECTRIC LAMP.

' No. 247,097. Patented $ept. 13,1881.

ii ,2. A 752/ W/iizzesscs. f/zrwziors. g V. map-e0 J4, 44 6, M1.- W42 UNITED STATES PATENT OF ICE.

JOSEPH v. NICHOLS, OF BROOKLYN, AND LEWIS H. LATIMER, OF NEW YORK, N. Y.

ELECTRIC LAMP.

SPECIFICATION forming part of Letters Patent N 0. 247,097, dated September 13, 1881 Application filed April 18, 1881. (N model.)

To all whom it may concern:

Be it known that we, JOSEPH V. NICHOLS, a resident of Brooklyn, in the county of Kings and State of New York, and LEWIS H. LAT- IMER, of the city, county, and State of New York, haveinvented certain new and useful Improvements in Incandescent Electric Lamps, of

' ed to the metallic conducting-wires of an incandescent lamp by our improved method; Fig. 2, a View of the same turned edgewise; and Fig. 3, aperspective of the same, illustrating more in detail the connections.

Arepresents a carbon conducting-strip, made, in the usual manner, with widened ends B B. The strip is, by preference, prepared by carbonizing a blank cut from sheets of paper, the form of the blanks being approximately that of the finished carbon. This method is not essential, however, as others may be employed in the preparation of the carbons,as by bending and twisting straight strips of wood or pa per either before or after carbonization.

Through the ends B B square or rectangular perforations O are out before carbonization, and through these perforations the flattened ends of the wires or conductorsDDare passed and bent over by pinchers to firmly clamp the carbon. In order to secure a more perfect electrical contact between the carbons and the wires, the ends of the former may be previously coated with copper or platinum. With this form of clamp all nuts, screws, or pinsand similar accessories are dispensed with. The conductors make contact with the carbons at considerable distance from the incandescent portion, so that the permanency of the connections is insured, and as the wires. are by this means protected in great measure from the heat developed, they may be of copper, whereby the cost of the lamps is greatly reduced. The wires are flattened for a short distance from their ends for securing greater contactsurface and flexibility, and are brought together and sealed into a support of vitreous material sol-mounting the base E of the ordinary incandescent lamp.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is- 1 1. The combination, in an incandescentlamp, with'the perforated ends of a carbon conducting-strip, of metallic wires passing through the same and bent over into close contact with the carbon, as described.

2. The combination, with the carbon conducting-strip A, having widened portions B B and rectangular perforations (J O, of conducting-wires D D, with flattened ends passing through the perforations and bent over into close union with the carbon, as and for the purpose set forth.

In testimony whereof we have hereunto affixed our signatures in the presence of two subscribing witnesses.

JOSEPH V. NICHOLS. L. H. LATIMER. Witnesses:

WM. H. TUCKER, DAVID LAW.

Images