US1172980A - Electric-lamp socket. - Google Patents

Description

G. W. GOODRIDGE & G. B. THOMAS.

ELECTRIC LAMP SOCKET.

APPLICATION FILED MAY 8.1915.

Patented Feb. 22, 1916.

2 SHEETS-SHEET l.

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G. Wl GOODRIDGE & G. B. THOMAS. ELECTRIC LAMP SGCKYET. APPLICATION FILED IIIAY 8. I9I5.

1 172,980. Patented Feb. 22, 1916.

2 SHEETS-SHEET 2.

A posite .A CORPORATION F CONNECTICUT.

ELECTRIC-'LAMP SOCKET.

intenso.

Specification of Letters Patent.

Patented Feb. 22, 1916..

Application led May 8, 1915. Serial No. 26,767.

To all whom t may concern Be it known that we, GiLBER'r W. Goon- RIDGE and GEORGE B. THOMAS, `both citizens of the United States of America, and residing at Bridgeport, in the county of Faireld and State of Connecticut, have invented a certain new and useful Improvement in Electric-Lamp Sockets, of which the following is a specification.

Our invention relates to lamp socketsand particularly to a socket having combined casing and shade holder, the object of our invention being to provide an improved device 0f this character especially adapted for a socket embodying a pull switch mechanism.

In the accompanying drawings, Figure 1 is a vertical section through a socket in which our invention is embodied in illustrative vmanner; Fig.` 2 is an invertedplan thereof; Fig.A is a section on the line 3 3, Fig. 1; Fig. 4 is a dropped perspective of the switch mechanism; Fig.v 5 is a perspective of the operating lever and ratchet drawn to an enlarged scale and inverted from the position shown in Fig. 4; Fig. 6 is a broken elevation of the socket; Fig. 7 ,isa vertical section drawn to a larger scale of the body of the socket showing the connection to one of the switch terminals; Fig. 8 is a perspective showing the connections from the wire terminals apart from the insulating body of the socket; Fig. 9 is a plan of the body of the socket similar to Fig. 3 but with the actuating lever in position; and Fig. 10 is a `dropped perspective of the center contact elements.

The socket in the form here shown comprises a one-piece casing 10 ofthe general type illustrated in the copending application of Goodridge and Thomas Serial No. 4457 and having at its .lamp receiving end an outwardly flared -flange 11 adapted to receive supporting means of any suitable type, such as set screws 12 by which the shade 13 may be supported. The nipple 14 at the opend of the socket affords means for securing the same to a fixture pipe 15 or the like through whichy the wires 16 are led to the socket: Within the casing an insulating body 17, comprising outer and inner buttons A and B respectively is secured by means of screws 18 taking into the threaded ends of a yoke '19 clamped within the head 'of the the two buttons.

` into the upper offset of tion of the ccives the head 51 of thel screw socket by the nipple 14. The two buttons A and are normally securedA together by means of standards 2O and 21, arranged within the switch chamber 22 formed by cooperating recesses in the meeting-faces of A screw 23 passing through the .outer button A takes into the base Aof the standard 20, while a short screw .24 passing through the upper button takes this standard, (see A corresponding long screw 25 takes into the base of the standard 21 'and a short screw 26 passing through the upper button engages the upper end of this standard. The latter carries a threaded teat 27 lying within the area of the porcelain body but projecting outward in a recess 28 formed Fig. 7).

in the casing, so that in the assembled posibody within the casing a chain bell 30 internally threaded may be passed through the aperture 29 in the casing and threaded upon the teat 27 (see Fig. 6).

The wire terminal plates 3l and 32 are let into recesses in the outer face of the blitton A adjacent the wire holes 33, 34, which pass through both buttons to the inner end of the receptacle. The terminal plate 31 is connected by screw 35 to a strap 36 carrying a switch terminal 37 and is thus in electrical connection with the latter. The terminal plate 32 is connected by screw 38 to strap 39, which in turn is connected by screw 40 with the screw shell 41 of the socket and is thus in constant electrical connection with the latter.

Within the switch chamber'22 a rotary of which diametrically opposite that over which the switch\terminal 37 lies is a second switch contact 46 electrically connected and preferably integral with a disk 47 which passes through a gap 48 in the side of the boss and enters a central well 49 in the latter. A metal cup 50 overlies the disk 47 and re- 52 which passes through the base of the cap anddisk 47 and a centralperforation 53 communieating with the well 49. The base 54 of the center contact 55 is apertured to receive the therein and registering with an aperture 29 end of the screw 52 and the securing nut 56, threaded onto the bolt electrically connecting the center contact with the switch terminal 46 and at the same time mechanically securing the center contact in the recess 57 in which the latter is accommodated in the outer face of the button A. Above thehead of the bolt 51 is arranged an insulating cup 58 in which the lower end of the switch spindle 59 rests. This insulating cup is normally supported somewhat above the head of the bolt 52 by a coil spring 60 so that the spindle may be slightly depressed to displace its rectangular head 61 out of its seat in the upper button B to properly tension the switch spring 62, yone end o which is engaged by the head 61, and the other end by a lug 63 on one face of the actuating ratchet 64. The latteris carried by a switch lever 65, here in the form of -a rsegmental disk of insulation, and has ratchet teeth 66 struck up therefrom to engage the edges of the arms of the switch piece 42 in well known manner. The chain rail 67 is mounted on one face of the actuating lever 65 and the chain 68, one end of which is gripped by the claw 69, at the end of the chain rail, passes out through the bell 30 in position for manual actuation. In order to have access to the chain rail after the buttons A and B have been assembled, the latter are recessed in register to form a lateral aperture 70 opening to the switch chamber at the point at which the chain rail lies in the assembled position of the parts.

rI`he invention is not limited to the particular type of pull switch mechanism illustrated, that shown being merely an illustrative embodiment of our invention. Various modifications of the construction will readily suggest themselves to those skilled in the art and do not depart from what we claim as our invention.

We claim as our invention 1. A pull socket comprising an insulating body having wire terminals at the lampreceiving end of the socket, independent wire passages extending from said terminals through the body of the socket to the rear thereof, a switch chamber within the body of the socket, a switch within said chamber, an electrical connection through said switch to one of the lamp terminals, and a permanent electrical connection from the other lamp terminal to the other line terminal, said connection being established through the switch chamber. A

2. In an electric lamp socket, an insulating body comprising a pair of insulating buttons recessed on their meeting faces to form a switch chamber, lamp terminals mounted on the outer face of one of said buttons, wire terminals on the same face of 1,17a,9so

said button, a conducting strap within the switch chamber, a bolt connecting said strap with one of the wire terminals, and a switch terminal within the chamber in electrical connection with said strap.

3. In an electric lamp socket, an insulating body comprising a pair of insulating buttons recessed on their meeting faces to forma switch chamber, lamp terminals carried on the outer `face of the outer button, wire terminals on said outer face of the latter, a conducting strap within the switch chamber, a bolt connecting the same with one of the wire terminals, a switch terminal within the chamber in electrical connection with said strap, in combination with a standard secured by the bolt from said wire terminals and a cooperating screw passing through the inner button and taking into said standard to secure said buttons together.

4. In a pull socket, a pair of insulating buttons recessed on their meeting faces to form a. switch chamber, a standard connecting said buttons and having an outwardlyfaced, hollow-threaded teat within the area of the switch body to afford connection fo-r a. chain bell. v

5. In a pull switch, a metallic casing, and within the Same a pair of insulating buttons forming a switch body, said buttons being recessed on their meeting faces to form a switch chamber, a pair of conducting straps lying within said chamber, a pair of lamp terminals on the outer face of the outer button, a pair of wire terminals on the same face of said button and electrical and mechanical connections therefrom to said conducting straps within the switch chamber.

6. In a pull switch, a pair of insulating buttons forming the 4body thereof recessed on their meeting faces to form a switch chamber, a. pair of conducting straps lying within said chamber, a pair of lamp terminals on the outer-face of one of said buttons, a pair of wire terminals on the ycorresponding face of said button and electromechanical connections therefrom to said conducting straps within the switch chamber, a switch contact within said chamber electrically connected with one of said straps and means for electrically connecting the other of said straps to -one of the lamp contacts.

In testimony whereof we have signed our names to this speciicatiomin the presence of two subscribing witnesses.

GILBERT WV. GOODRIDGE. GEORGE B. THOMAS.

Vitnesses CARL ERIC ANDERsoN,

H. M. WICHERT.

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