US898822A - Plural lamp-socket. - Google Patents

Description

R. B. BENJAMIN.

PLURAL LAMP SOCKET.

APPLICATION FILED FEB. 23, 1907.

898,822. Patented Sept. 15,1908.

mumllhl UNITED STATES PATENT OFFICE.

REUBENB. BENJAMIN, OF CHICAGO, ILLINOIS, ASSIGNOR TO BENJAMIN ELECTRIC MANUFAC- TURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PLURAL LAMP-SOCKET.

Specification of Letters Patent.

Patented Sept. 15, 1908.

T 0 all whom it may concern:

Beit known that I, REUBEN B.'BENJAMIN, a citizen ofthe United States, residing at Chicago, in'the county of Cook and State of "Illinois, have'invented new and useful Improveme'nts in Plural Lamp Sockets, of which the following is a full, clear, concise, and exact description, reference being had to the accom anying drawing, forming a part of this speci cation;

My invention relates to improvements in electric-lamp clusters, and particularly to improvements in a "type of lamp-cluster which is'adapted to be inserted into an ordinary lamp receptacle, one of theobjects of isa broken sectional view, the section being takenbn the'line 3'3 of Fig. 1, looking in the direction indicated by the arrows and showing some of the'parts in elevation.

In the'several'figures of the drawings, in which like reference numeralsindicate similarparts throughout, 1 is a base formed of porcelain or other suitable insulating material, this base having formed thereon or being otherwise provided with a plug 2. This plug 2 is provided with suitable contacts adapted to coeperate with the contacts of an ordinary lamp receptacle of the Edison type. The'outer contact may conveniently consist of a corrugated or threaded shell 3, this shell having the form of a cup with a central circular opening in its bottom. The plug 2 is formed or provided with a centrally-disposed projection 4 which extends through the open ing in the bottom of the cup 3 when this cup is slipped on to the plug 2.

The plug 2 is formed with an opening 5 extending centrally and longitudinally therethrough, and with other openings 6 and 7 substantially parallel with the opening 5.

Extending through the central opening 5 is a bolt 8, the outer end of which forms the center contact for the plug and upon the inner end of which is secured a plate 9. This plate 9 carries one of the contacts for each of a plurality of lamps, and, as herein shown,

when adapted for Edison lamps these contacts will be the lamp- holding sockets 10 and 11. A substantially similar plate 12 is arranged cross-wisethe plate 11 and also carries a pair of lamp-holding sockets. Each of these lates 9 and 12 is made in the form of a pair 0' rings connected by a web portion 13, as shown in Fig. 2. vided with a wing-like extension 14, these wing-like extensions 14 having each an outturned end adapted to be inserted into an undercut recess 15 in the lower side of the base 1.

Upon'the inner side of the base 1 is a circular plate 16 having a plurality of wings 17 extending radially therefrom and adapted to form the center contacts for the lamps. This plate 16 is formed with a central circular opening and the inner side of the base is formed with a projection 18 adapted to ex tend through the opening in the plate 16.

.This projection 18 serves to center the plate 16 on the base 1 and prevents the same from coming in contact with the bolt 8. Extending longitudinally through the openings 6 and 7 are bolts 19 and 20. Y The bolts 19 and 20 pass through the plate 16 and secure it to the base 1. These bolts also serve to secure the outer contact member 3 to the plug 2 and to electrically connect the same to the plate 61.

A cover or casing 21 is adapted to engage around its edge the circular edge of the base 1. This cover is formed with suitable openings through which project the lamp sockets. Insulating sleeves or bushings 22, interiorly screw-threaded to cooperate with the threads on the lamp- holding shells 10 and 11, serve, when inserted through the openings in the cover 21 and screwed on to the lamp-holding shells, to support or sustain the cap or cover 21 and hold it in place against the base 1.

Having thus described my invention, what I claim as new and desire to secure by Let ters Patent, is: g

1. In a plural lamp socket, a base having a plug upon one of its sides and a plate upon its opposite side disposed to engage the center contacts of a plurality of lamps, an outer contact member upon said plug, and means providing electrical connection between said plate and said outer contact.

2. In a plural lamp socket, a base having a plug provided with inner and outer contacts, a plate arranged to engage the inner terminals of a plurality of lamps, and a member Each of the rings is proextending longitudinally through .the plug and providing an electrical connection between the outer contact of the plug and said plate.

3. In a plural lamp socket, a base having a plug upon one of its sides, said plug being provided with an outer contact member and an. inner contact for engagement with the contacts of a suitable socket and a plate upon the opposite side of said base in electrical communication with the outer contact of the plug, said plate being arranged to engage the inner terminals of the lamps.

4. In a plural lamp socket, a base having a plug, said plug having an outer contact member thereon, a lamp terminal contacting plate, and a bolt extending longitudinally through the plug and securing said outer con tact member and said plate in position and providing electrical communication therebetween.

5. In a plug-cluster, the combination of a plurality of threaded shells, a plate secured to said shells, a plug having an outer contact, an inner contact for said plug comprising a bolt extending to and supporting said plate, a casing supported by said shells, and inner contacts opposite said shells electrically connected with the outer contact of the plug.

6. In a plug-cluster, a base having a plug upon its outer side arranged to engage the center terminals of the lamp and a plate upon its inner side, an outer contact upon said plug in electrical connection with said plate, a center contact on said plug, another plate secured to said base and a plurality of lamp holding devices carried by said last-named plate, said last named plate being arranged in electrical communication with said center contact.

7. In a plural lamp socket, a plug carrying a plurality of lamp-holding devices, said plug provided with an outer and an inner contact, means providing electrical connection between the outer contact of the plug and the inner contacts of the lamps, and means providing electrical connection between the innor contact of the plug and the outer contacts of the lamps.

8. In a plural lamp socket, a base having an undercut recess, a lamp-supporting plate. having shoulders supported in said recess and a bolt extending through said plate and through the plug and forming a contact member for said plug.

9. In a plural lamp socket, a base having recesses, a lamp contact supporting plate having flanges resting in said recesses, a plug upon said base having contacts, and a member extending through said plug and assisting to support said plate, said member electrically connecting said plate with one of the contacts of the plug.

10. In a plug-cluster, the combination of a base provided with a plug upon one of its sides, said plug having a center contact and an outer contact adapted to cooperate with the contacts of a suitable receptacle, a plate upon the opposite side of said base in electrical communication with the outer contact of the plug and adapted to form the inner contact for each of a plurality of lamps, a plate adapted to conduct current to the outer contacts of a plurality of lamps, and electrical connection between said last-named plate and the center contact of the plug.

11. In a plug-cluster, the combination of a base having a plug upon one of its sides and a plate upon its opposite side, a center con-- tact and an outer contact upon said plug adapted to cooperate with the contacts of a suitable receptacle, said plate being electrically connected with said outer contact, and a plate in electrical connection with said center contact and adapted to support a plurality of lamps and to provide an outer contact for each of said lamps.

12. In a plug-cluster, the combination of a base having a plug upon one of its sides, said plug having a center contact and an outer contact, a bolt extending centrally through said plug, a plate secured to said bolt, said plate serving to conduct current to the outer contact of each of a plurality of lamps, a plate secured to the inner side of the base and adapted to provide a center contact for each of the lamps, and a bolt extending longitudinally through the plug, said last named bolt securing said last named plate to the base and efl'ecting electrical connection bettlveen said plate and the outer contact of the p In witness whereof, I have hereunto subscribed my name in the presence of two witnesses.

REUBEN B. BENJAMIN. Witnesses W. L. FARRAR, C. L. I-Iorxnvs.

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