US714292A - Lamp-socket. - Google Patents

Description

Faente'd Nov. 25, |902;

(No Modal) l @HHH .Nuages 4 @'MVL/ UNITED STATES PATENT OFFICE.

PHILIP H. FIELDING, OF NEW YORK, N. Y.

SPECIFICATION forming part of Letters Patent No.` 714,292, dated November 25, 1902.

Application le. February 20, 1.902. Serial No. 94,910. (No model.)

To all whom it may concern:

Be it known that I, PHILIP'H. FIELDING, a citizen of the United States,residing at the city of New York, in the borough of Manhattan and State of New York, have invented certain new and useful lmprovementsin Lamp-Sockets, of which the following is a ful1,'clear, and exact description.

This invention relates to incandescentlamp sockets, the object being to provide a socket adapted for out-of-doors or interior service,

and to that end it will be waterproof, also to provide a socket which can be quickly wired and assembled, which will relieve the binding-screws of all strain when the socket and lamp are suspended, which can be manufactured at low cost, and which is adapted either for a suspended or a bracket lamp.

The novel construction will be fully described in connection with the accompanying drawings, in which- Figure 1 is a side elevation with a part in section of the improved socket. side elevation of the interior removable portion of the socket. ,Fig. 3 is a horizontal section of the case of the socket. Fig. 4 is a plan of the device shown in Fig. 2; and Fig.

- 5 is a section of theupper portion ofthe a contracted neck a'.

socket, showing the parts adapting it for use l on a bracket.

The socket consists,in general,`of two partsone, the inclosing case A, and the other, B,.

supporting the contacts-the two parts being independent and movable with respect to each other. The part A is of porcelain and bell-shaped, having a cylindrical body a and teriorly at the zone where the neck joins the cylindrical portion are two dialnetricallyplaced notches or shoulders a8. The lower edge of the bell is flared to shed moisture. The part B consists of a disk b, of porcelain,

fitting loosely into the cylindrical part a of Fig. 2 is a The neck has a centrallpassage 0.2 to admit the conductors, and in- A nected with the shell and center contact, re-

spectively, lead upward through notches in the edge of the disk on opposite sides of the projection b and carry at their upper ends binding-screws d2.

To assemble the socket, the electrical conductors c e are passed from above through the opening a2 and brought out below the bell. The ends of the conductors are then passed in opposite directions through the holes b2 in the part b" and secured, respectively, by the binding-screws d2. Then by pulling upward on the cord the part B is carried into the part A until it is stopped by the contracted neck of part A. Then by slightly rotating the parts upon each other the lugs d ld iind the notches a3 and pass into them, thus locking the parts A and B against rotary motion with respect to each other.

For an interior suspended lamp the socket is now complete. The weight ot' the socket at the end of the cordiwill hold the parts in terlocked, so that by grasping the bell in the hand a lamp can be screwed into place without twisting the part B'. By passing the cord through the openings in the part b it will be seen that the strain of the weight of the lamp or any pulling on the lamp will not be felt by the binding-screws, and the connection at these points will not be impaired.

When the lamp is to be used outside,'or in any location where it will be subjected to moisture, the passage c2 in the top of the bell is to be pluggedand made moisture-proof by introducing cement a3. Likewise, to prevent moisture from reaching the contacts from the lower end cement may be filled in between the shell c and the bell A.- The cement in both places can be easily removed when necessary by the application of heat.

To adapt the socket for' rigid attachment to a bracket or other fixture, the passage a2 is made to receive a boss f, (see Fig. 5,) having a threaded part to screw onto the fixture and a squared part j" to prevent it from turning. It is clamped in place by a nut f2.

Hence a bell constructedas shown in Fig. 1 is adapted either for a suspended or a fixed lamp.

The means for obtaining the free interlocking connection between the parts A and B may be varied. For instance, the projection IOO b might engage with the notches instead of the lugs d and d', or lugs on the part A might enter notches in the disk b, so that my iuvention is not limited in this respect. It is also noted that the invention is not limited to the Edison type of socket shown, since any socket requiring the lamp to be screwed or twisted into place could be used. Although a keyless socket is described, it is evident that the main features of the invention relate as well to key-sockets.

Having described my invention, I claim- An incandescent-lamp socket consisting of a block of insulating material carrying the metallic binding and contact devices and having an engaging shoulder and a conductingcord connected directly therewith, in combi; nation with a petticoat or casing of insulating material adapted to entirely cover said block and metallic parts, said casing having an opening through which said cord passes and having a shoulder adapted to engage with the shoulder on the part to which the cord is secured, to prevent relative rotation of the casing and parts which it covers.

In Witness whereof 'I subscribe my signature in presence of two witnesses.

PHILIP H. FIELDING.

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