US654433A

US654433A - Incandescent-lamp socket.

Info

Publication number: US654433A
Application number: US73539899A
Authority: US
Inventors: William B Bragdon
Original assignee: Warren SD Co
Current assignee: Warren SD Co
Priority date: 1899-10-31
Filing date: 1899-10-31
Publication date: 1900-07-24
Anticipated expiration: 1917-07-24

Description

No. 654,433. Patented July 24, I900.

w. B. BRAGDON.

INCANDESCENT LAMP SOCKET.

(Application filed Oct. 81, 1899.\

(No Model.)

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\VILLIAM B. BRAGDON, OF CUMBERLAND MILLS, MAINE,ASSIGNOR TO S. D. WARREN & 00., OF BOSTON, MASSACHUSETTS.

INCANDESCENT-ELAMP SOCKET.

SPECIFICATION forming part of Letters Patent No %,433, dated July 24, 1900. Application filed ctober 31, 1899. Serial No. 735,398. (No model.) i

lowing description, in connection with the ac-' cor'npanying drawings, is a specification, like Characters on the drawings representing like parts. v

This invention relates to sockets for incandescent lamps; and the object of the invention is to provide an improved device of this character especially adapted for use in breweries, refrigerating plants, and other places where the air is laden with considerable moisture or dampness and which ordinarily condenses upon the lamp-socket or near the same.

By myimproved construction it is not pos sible for condensed moisture to reach the conductors or to bridge the same at or near the lamp, as in such cases as these the lamp might be burned out or the current shortcircuited before it reaches said lamp.

I use the term incandescent-lamp socket as a generic one, it being understood that the socket is adapted to receive many other types of translating devices than lamps.

The improved socket shown in the drawings in a simple and convenient embodiment thereof includes in its construction certain peculiar and advantageous features, which will be hereinafter set forth and claimed. In the drawings, Figure lis a plan view of the socket and its connection. Fig. 2 is a transverse central section of said socket, the lower portion of the right-hand conductor being shown in section, and Fig. 3 is a side elevation of the same.

The socket illustrated is designated in a general way by S, and it includes in its make up a socket proper, or what I shall term for convenience a case or jacket 12,the latter being made of some suitable electro non-conducting material, as porcelain, and-having in the present case a water-shed 13; The watershed 13 is shown as integral with the case or jacket 12, and said parts may be made from porcelain or analogous moisture-proof material. The water-shed or hood 13 is shown as circular in outline and as overhanging the case or jacket 12, and its upper surface is sloped or substantially spherical, so that drops of water that may lodge upon the same from above can readily pass 0 The conductors orleading-in wires are dlesignated, respectively, by 14 and 15 and are conneoted in some suitable manner (not shown) to the main or other kind of electric supplying agency, and said conductors or wires are made up of a multiplicity of twisted strands covered with electro insulating jacketing, which should always be waterproof or a moistureresistant, rubber tubing constituting a convenient insulation for said conductors. The conductors or wires lead into the interior of the socket 12 at diametrically-opposite points through openings, as 16 and 17, located below and protected by the water-shed or overhanging hood 13, said hood serving to prevent access of moisture or condensed water which may fall upon the same to the said openings, although other safeguards are provided to secure this same advantageous result, thereby to positively guard against short-circuiting by the collection of moisture, The insulated coverings of the cenductors may be conveniently formed from rubber tubing, as previously set forth,and the sameare denoted, respectively, by 18 and 19, and they extend from a pointabove the socket in an unbroken or continuous manner to a 'point within the case, and they are positively separated from each other, so that no channels or gutters can be formed by the same, as would be the case necessarily were they to come in contact.

The conductors are bared at the places where they connect with the terminals, said conductors and terminals constituting, as usual, an open circuit controllable byaswitch (not shown) mounted upon the socket. The terminals are denoted, respectively, by T and T. The terminal T is in the nature of an internally-threaded sleeve or thimble rigidly held in the case 12 in suitable manner and adapted to receive the 'exteriorly-threaded projection upon alamp or like device; (Not shown.) The lower endof the terminal T is flared outward to bring it into contact with p the adjacent cylindrical face of the case 12, and its open upper end is surrounded by the inturned annular flange or shoulder 20,

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fits against the under side of said disk, and p the bared lower end of thewire 14: is received within the opening in the boss'orstem 22.

The bared portion at the lower end of the conductor 15 is united in some suitable manner, as by solder 23, to the upper inner side of the thimble-like terminal T.

the jacket or case 12 is preferably entirely filled with some electro non-conducting and heat-resisting substance, as 24, sulfur being well adapted to this purpose. This substance surrounds and electrically separates the bared portions of the conductors 14: and 15 where they are located in the case, and it also enters the

openings

16 and 17 and completely closes the same. In addition to its specified function previously set forth the substance 24 also serves to hold the terminal or contact T in place.

In practice the substance 24 is poured into the inside of the jacket in its molten state, and it may be introduced through the fillingopening 25, shown as formed in the top of the socket.

The socket has upon its upper side, at substantially its middle, the vertical projection or offset 30, having the separated openings 31 and 32, through which the

conductors

14 and 15, respectively, are adapted to pass, the said projection serving to positively separate the two conductors, as in case they are brought into contiguity a trough would be formed in which moisture could collect. The leading-in Wires extend oppositely through the openings in the projection, and they are bent downwardly and outwardly, as shown in Fig. 2, to form loop or lobe shaped projections, which are adapted by this construction to shed moisture below the hood. The two conductors, as previously set forth, extend through the side openings 16 and 17in the jacket or case 12 and are connected to the two terminals. After the connection of the two conductors, in the manner indicated, to the terminal the molten sulfur 24 will be poured through the filling-opening 25 and will entirely fill the space and also surround the bared portion of the conductors, as well as theirinsulation, and will flowinto the

openings

16 and 17, whereby all interstices will be thoroughly closed again st moisture.

The invention is not limited to the precise details herein set forth, for these can be variously modified within the scope of the accompanying claims.

Having fully described my invention, What I claim as new, and desire to secure by Letters Patent, is-

1. An incandescent-lamp socket consisting of a case provided with a hood, said case having openings in its walls below the hood, ter- The disk 21 has a central opening to' The space between said terminal and the inner wall of minals in said case, electric conductors leading into the case through the openings, and each provided with continuous insulation from a point above the socket to a point within the case, and a projection upon thehood having openings to receive and separate said conductors.

' 2. An incandescent-lamp socket consisting of a case provided with a hood, the case having openings below the hood, and the hood having a filling opening, terminals in the case, conductors passing through said openings below the hood and connected with the terminals, said conductors being insulated continuously from a point above the socket to a point within said case, and a filling of moisture-proof material in the case.

3. An incandescent-lamp socket consisting of a case provided with a hood, the hood having a projection upon the upper side thereof and a filling-opening, and the case having openings below the hood, terminals in the case, and two leadingin wires extending through the openings in said projection and also through the openings below the hood and connected with the terminals, said conductors being insulated continuously from a point above the socket to a point within the case.

4. An incandescent-lamp socket including a case having separated openings, a watershedding hood located to protect said openings, terminals in the case, a projection upon the upper side of the hood having separated openings serving to hold the conductors out of contact, two conductors passing throughsaid openings in the projection and through the openings in the case, and being connected to said terminals and said conductors having continuous insulation from a point above said projection to points inside of the case, and a filling of moisture-proof electro nonconducting materialin the case and surrounding the conductors where they are united to the terminals.

5. An incandescent lamp including a case having openings and provided with a hood to shed condensates or other moisture before it can reach said openings, terminals in the case, conductors electrically connected with said terminals, said conductors being covered with continuous moisture-proof, insulating material from a point adjacent said terminals, to a point remote from the case and bent downwardly and outwardly before their entrance to the case to form moisture-shedding lobes, means upon the hood for positively holding said conductors out of contact, and moisture-proof insulating material within said body intermediatethe terminals.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM B. BRAGDON.

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