US665459A

US665459A - Lamp-terminal.

Info

Publication number: US665459A
Application number: US68390898A
Authority: US
Inventors: George B Painter
Original assignee: General Electric Co
Current assignee: General Electric Co
Priority date: 1898-06-20
Filing date: 1898-06-20
Publication date: 1901-01-08
Anticipated expiration: 1918-01-08

Description

No. 665,459; Patented Jan. 8, laul. G. B. PAINTER.

LAMP TERMINAL.

(Appiication filed June 20, 1898.)

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UNITED STATES PATE F played in the lamp-base. however, will be better understood from the v GEORGE E. PAINTER, 'OFSCHENEOITAIDY, NEW YoRK, ASSIGNOR TO THE GENERAL ELECTRIC COMPANY, OF NEW YORK.

LAM P-TE/RMINAL.

SPECIFICATION forming part of Letters Patent No. 665,459, dated January 8, 1901. Application filed \Tnne20i1898. Serial No. 683,908. (No modelh minals of incandescent lamps, by means of which they are brought into circuit with the 1 source of electric supply. 7

It has for its object'to provide a cheap and good pin-terminal, so called, for that form of these lamps in which one of "the lead-in wires is-connected to a central pin embedded in a body of insulating material, the second terminal being connected to the outer sleeve orring, as in the-well-known Westinghouse lamp.

For the purposes'of this invention I take a flat strip ofmetal and stamp the pin. from it in a wayto-be presently more fully described, at the same time flaring the sides of the pin, so that it afiordsa secure anchorage in the plaster-of-pari's or other materialem- The invention,

, accompanying drawings, in whic-h Figure 1 is a perspective view of the. strip from which thepin ismade. Fig. 2 is aiview, upon an enlarged scale, of the pin after completion;--and "Fig-3 is a section of a lamp, showing thepin in place. I

E inFig. l is a strip of conductingmetal, preferably brass, provided with a central hole e, thepurpose of which will presiintly be explained. This-is the blank from which the pin E is; formed.

In Fig.'-2,E is the pin, whicu, consists of a cylindrical body- E and flaring ends'E', with a slit E separatingthem. The

' end of the pinis slightly cupped,'as at e in Fig. 3,'and-a hole 6 is left in the center-of the cup. r In Fig, 3, B B are the lead-in-wires of the lamp A. O is the outer terminal of the lamp,

to which the leading-in wire 13 is secured at 12.; E is thepin'iforming the innerterminal, secured in-the insulating material D, which does not rub ofi on the terminal is usually plaster-'of-pari's, although other materials might be used. At 6' is shown the cup=shaped end of the pin.

Inthe manufacture of the lamp after the pin is formed ina power-press the leading-inwire B is drawn through the hole e and into the cup-shaped extremity e of the pin,'the latter being embedded during the process in the plaster-oflparis D. The cup aifords a ready means of-secnring the lead-in wire in place,'as the solder is held conveniently and of the lampsocket.

What I claim as new, and desire to secure by Letters Patentof the United States, is-

1. ,A center contact for lamp-bases, which consists of a sheet-metal strip which is doubled upon itself, one end of the contact being closed and the other being-open.

2. A center contact for lamp-bases, which consists of .a sheet-metal strip which is doubled upon itself, one end of the contact being open, and the adjacentparts of the contact .whichform the open end being flared away from each other so that the contact can be anchored in the insulatingmaterial of the lampbase. 3; A center contact for lamp-bases, which consists ,of a hollow cylinder having'a closed end which has aninward depression, and a j perforation through the depression for the .lead-in wire, the depression serving to receive the solder for the lead iniwire, so that the-solder will not wear ofi? against the center terminalof a lamp-socket,

n 4. A center'- contact for lamp-bases, which consists of a sheet-metal strip doubled upon itself, one end of the contact being closedand having a perforation for the reception asshown,

of the lead-in .wire', and the. other end of the contact being open and provided with flared edges, whereby the contact can be anchored in the insulating material of the lamp-base.

5. A center contact for lamp-bases, which consists of a sheet-metal strip doubled upon itself, one end of. the contact being closed and having an inward depression for the reception. of solder and a perforation through I the depressed portion for the receptionof the;

lead-in wire, and the other end of the contact being open wardly, whereby the contact can be anchored in the insulating material of a lamp-base.

6. A lamp-terminal piece of sheet metal forming a hollow cylinder with a perforatedcup-shaped depression at one end for the reception of a lead-wire and the solder for attaching the latter to the terminal.

7. A lamp-terminal. consisting of a single strip of sheet metal semicircular-1y curved, and doubled upon itself inder having an open and closed end.

8. A lamp-terminal consisting of a single strip of sheet metal semicireularly curved, and doubled upon itself to form a hollow cylinder having a closed end and an open end with flaring edges formed of the ends of the strip.

9. A lamp-terminal consisting of a single and the adjacent parts flared outconsisting of a single,

to form a hollow cylstrip of sheet metal semicircularly curved, and doubled upon itself to form a hollow cylinder having an open end and a closed end formed with an inwardly-extending depression pierced for the passage of a lead-wire.

10. A lamp-terminal consisting of a single strip of sheet metal semicireularly curved, and doubled upon itself to form a hollow cylinder having an open end with flaring edges formed of the ends of the strip, and a closed end formed with an inwardly-extending depression pierced for the passage of a leadwire.

In witness whereof I have hereunto set my hand this 17th day of June, 1898.

GEORGE B. PAINTER.

Witnesses:

B. B.- HULL, C. L. HAYNES.