US1661689A - Electric candle socket - Google Patents

Description

T. A. BOTH ELECTRIC CANDLE SOCKET March 6, 1928.,

Filed July 26. 1921 INVENTOR A'TTORNEY Patented I Mar. 6, 1928.

, v 1,661,683 UNITED STATES PATENT ,QF

'roinrns A. BOTH, or srnnrronn, oounno'rrour, ASSIG-NOR TO THE CONNECTICUT ELECTRIC MANUFACTURING COMPANY, or nnrnenronr, CONNECTICUT, A con- PORATION OF CONNECTICUT.

Application filed July 26, 1921. Serial No. 487,649.

This invention relates to an electric fitting and especially to a candle socket, and has for an object to provide an improved structure for fittings of this type in which it will be unnecessary to pass the lead wires through the side walls of the conduit. It is a further object of the invention to provide a fixture of this type which will. have comparatively few parts, which may be easily assembled, and which when assembled will be strong, and not likely to get out of order. WVith these and other objects in View I have devised the improved device illustrated in the 1 to the upper ends of the binding post brackaccompanying drawings in which;

Fi 1 is a side elevation of myimproved cand e socket with a portion of the casing broken away to disclose the interior thereof;

Fig. 2, a longitudinal central sectional view of the socket with the casing removed;

Fig; 3, an exploded view showing the various elements in perspective; and

Fig. 4 is a plan view of the fixture complete. 1

Reference numeral indicates the exterior shell or casing which is constructed of somenon-conducting material such as fibre. The lower end of this shell is closed bythe lower insulating block 11, this block having an annular rib 12 on its upper surface adapted to fit in the end of the Shell or casing. The block 11 is provided with a central opening 13thr-ough which extends a nipple 14, this nipple having threaded engagement with the upper end of the conduit 15 and is secured against turning thereon by means of a set screw 16. This nipple 14' is provided with shoulders 17 upon which corresponding shoulders in the opening 13 of the block 11 rest. The shoulders 17 are formed by milling off two sides adjacent the junction of the upper and lower cylindrical portions as shown in the lower part of Fig. 3, which operation alsoleaves two flat sides. The upper portion of opening 13 in the block 11 is also flattened on two sides to fit this portion of the nipple and to prevent turning of the nipple in the block. On the upper end of the block, the rib 12 forms two recesses 18 and 19 separated by the tongues 20. These recesses are adapted to receive the lower segmental end portions 21 and 22 of the binding post brackets 23 and 24respectively. After these segmental ends are placed within the recesses, a fibre collar or washer 25 is placed upon the upper surface the reef. A second metal washer 26 isplaced the inner diameter of these portions is'larger than the diameter of the upper half of the nipple, a space 28 is left between these elements as shown in Fig. 2 and, therefore, no insulating washer is required at this point. p

A second insulating block 29 is secured ets 23 and 24 by suitable screws 30" and 30 respectively, the bodyportions of the binding post brackets 'provi ding means for holding these blocks separated a sufficient distance to take out the ends of the leads 31 fro m the upper end of the'nipple 114 and to allow theseends to be bent over the edge and fastened thereto by binding screws 32; The upper block 29 is provided with a radially ext ending recess 33 leading at one end to a longitudinal channel 34 in one side ofthe block, and at the other end to a longitudinal opening 35 extending through the center of the block 29. The recess 33 and channel 34 are adapted to receive the central contact spring 36, the lower end of which is bent around over the lower end of the block 29, 1s secured between this blockandthe upper end ofbinding post-bracket 24 andin conac the t therewith by means of the screw 30. To

upper end of the bloc-k29 issecured the threaded shell or socket 37 for thekusual threaded lamp base. This shell is provided at its lower endwith an inwardly extending flange 38 through which screws] 30 extend.

esescrews pass through the block 29 and are threaded attheiiflower ends in the upper section 23' of the binding post bracket 23.. If desired,'washers39 may be provided under the heads of screws 30'. .It will be apparent that, these screws torm' an electrical connection etween the bin ing post bracket 23 and the threaded shell or socket 37.

In assemblin the upper end of the central contact sprlng 36 may be bent upwardly to the dotted line position shown in Fig. 2

ole fixture may now be screwed on to the end of the conduit 15 without twisting the lead wires 31. After it has been screwed into position the ends of the wires 31 may be drawn downwardly from the opening 35 and bent outwardly and secured under the heads of the binding screws 32 in the usual manner. The spring 36 is then bent downwardly into the full. line position in Fig. 2 which is the normal working position. The shell 10 is applied by screwing it down over the threaded socket 37 as it is provided with threads to fit the outer surface of those on the socket.

It will be clear from the foregoing that I have devised a simple and rigid structure which is easy to assemble and easily applied to the end of the conduit and also that it is not necessary to lead the wires 31 out through the side walls of this conduit. Furthermore, at nopoint are these wires outside the fixture, where they would be liable to injury but are at all times within the confine of the'insulated blocks and binding post brackets.

Having thus set forth the nature of my invention, what I claim is:

1. A conduit fitting comprising an insulating block, a nipple extending through and attached to the block, means for securing the nipple to the conduit, binding posts secured to the block by said nipple on the opposite side of the block from the conduit, said block being arranged to allow the lead wires from the conduit to extend therethrough to the binding posts, a second insulating block carried by said binding posts .and spaced from the first block, and lamp contacts carriedby the second block and having electrical connection with the binding posts.

H 2. A conduit fitting comprising an insulating block having alongitudinal opening therethrough, a nipple secured to the block,

means for securingthe nipple to a conduit,

binding posts secured to the block by said nipple, a second insulating block secured to the binding posts, lamp contacts carried by the second block and having electrical connection with the binding posts, and lead wires extending from the conduit through the opening in the block to the binding posts.

3. Aconduit fitting comprising an insulating block having a longitudinal opening therethrough, a tubular nipple extending through said opening, means forsecuring the nipple to a conduit, means for securing the nipple to the block, binding posts secured to the block by said nipple on theopposite side from the conduit, and lead wires extending from the conduit through the nipple to the binding posts.

4. In a device of the class described, an insulating block provided with a longitudinal openingtherethrough, a tubular nipple extending through said opening, means for securing the nipple to a conduit, spaced binding posts on the opposite side of the block provided with inturned flanges resting against the block, an insulating washer resting upon said flanges and clamped thereagainst by the spun over end of the nipple, and lead wires passing through the nipple from the conduit to the binding posts.

5. In a device of the class described, an insulating block provided with recesses at one end separated by tongues integral with the block, an oblong opening extendin through the block and communicating wit said recesses, a tubular nipple shaped to substantially fit said opening, means for securing said nipple to a. conduit, binding post brackets having inturned segmental portions resting in said recesses, means for securing the brackets to the block, and lead wires passing through the nipple from the conduit to the brackets. I

6. An electrical fitting comprising spaced insulating blocks having aligned openings therethrough, binding post brackets between the blocks and secured to the same to maintain them in. spaced relation, a tubular nipple secured to one of the blocks, means for securing the nipple to a conduit, lamp terminals carried bythe other block and connected with said brackets, and lead wires extending from the'conduit through the first block to the brackets. i

7. In an electrical fixture, longitudinah 1y spaced insulating blocks, binding post brackets between the blocks and' provided with flanges at one end, a tubular nipple extending through oneof the blocks and having an inner end adapted to be spun over said flanges to secure the binding posts to said bloc-k, means for securing thetube to a conduit, and lamp terminals carried by the other block and having electrical connection with said binding vpost brackets.

In testimony whereof: I afiix my signature.

TONJES A. BOTH.

Images