US986138A - Incandescent-lamp socket. - Google Patents

Description

L. J. GASTONGUAY. INOANDESOENT LAMP sooxm.

APPLICATION FILED JAN.21,1910.

Patented Mar. 7, 1911.

WITFD STATES PATENT UFFI CE.

LEGER J. CAS'I'ONGUAY, or nmnenroar, CONNECTICUT, ASSIGNOR TO THE rEakINs ELECTRIC SWITCH MANUFACTURING COMPANY, or nnrnenro'nr, CO NECTICUT,"

A CORPORATION OF CONNECTICUT.

INCANDESOENT-LAMP SOCKET.

Specification of Letters Patent.

Patented Mar. '7, 1911 To all whom it may concern:

Be it known that I, LECER J. CASTONGUAY, a citizen of the United States of America, residing in the cit of Brid eport, in the county of Fairficl in the tate of Connecticut', have invented certain new and useful Improvements in Incandescent-Lam Sockets, of which the following is a spoolfication.

One of the main objects of my invention is to so construct a key socket for electric incandescent lamps that the axis of tlie'key handl will always be substantially at rightangles 0 the axis of the lamp socket no matter to what position it may be turned, and a further object is to construct an efficient key socket with double break.

In the accompanying drawings Figure 1 is a vertical section er a socket constructed. in accordance with my invention, the lined cap and shell being omitted for the sake of simplicity, and the key being shown in the posltion in which the circuit is closed; Fig. 2 is a similar sectional view, showing the key turned to the position where the circuit 1s broken; Fig, 3 is an inner face view of the lower insulatlng block; Flg. 4 1s an 1nner face view of the upper insulating block with the switch key Fig. 2; Fig. 5 is a switch device.

While my invention may be applied to sockets of a single insulating block type, I prefer to employ the Perkins double insuating block form of the Perkins Patent N o.

in the position shown in perspective vlew of the 626,927, and I have so shown it in the accompanying drawing.

has a stem 71. which has a The lower insulating block A carries as usual the lamp-receivin terminals S and C, the latterbeing in e ectrical connection with a contact plate D in a recess in the inner face of the lower block A. The switch block F is in this case mounted upon a spindle f having bearings in the U-shaped frame F which in the present case is shown as secured in a suitable recess formed for it in the inner face of the upper block B.

I prefer to provide the lost motion connection between the handle H and the spin dle f, and for this purpose the handle H bearing in a washer 71. held n semi-circular recesses of my socket it will be seen the adjacent faces of the two blocks A and B, and those adj acent'faces of the two blocks On the end of the spindle f opposite that which carries the switch block I secure a cam block E. On this cam block E bears a spiral spring P set into the recess in the inner face of the upper block and preferably having a bearing plate p against which the surface of the cam block may make frictional Contact. In a recess in the upper block over the switch block F is a'spring contact plate G in electrical connection with a binding post 12 carried by the upper block. Thescrew shell S will be in electrical connection with the other binding post 13 which is shown in Fig. 3.

In the above described construction of that in one position illustrated in Fig. 1, the switch block F makes electrical connection between the spring Contact plateGconnec-ted to, the binding post 12 and the Contact plate D con nected to the lamp terminal C, and the spiral spring P bearing on the rectangular upper end of the cam block E will tend to retain the parts in that position. When the key ,H is turned from the position shown in Fig l to that shown in Fig. 9., the circuit will be broken with a snap break not only between the switch block F and the spring Contact G but also between the switch block F and the contact D, thus giving a double break, and the s ring P, by acting upon the cam block E, wi I maintain the switch block F in the position shown in Fig. 2, until the key is intentionally turned to another position. 7

With the construction described there will be no tilting of the key such as is common in many types of key sockets,'but,the key handle will be maintained with its axis always at right angles to the axis of the socket. I claim as my invention- 1. A key so'cket having a switch block and a spindle to which the switch block is fixedly secured, with an insulating body, bearings for the switch block spindle, and a key handle having a .lost motion connection with the switch block spindle and bearings for the key handle. Y

2 A key socket having an insulating body and a spindlecarrying a switch block and a cam block and contacts for the switch block with a spring to act upon the cam block and a key'handle having a ,lost motion connectionwith the cam block on the spindle.

3. A key socket having an insulating body, a switch block and a cam block mounted to turn together, contacts for the switch block and a spring to act on the cam block,

and a key handle havin a lost motion connection with said spind e.

4. A key socket having an insulatingjfl body, a switch block and cam block, con- '20 tacts for the switch block, a sprin to act upon the cam block and a key han 1e with a lost motion connection between the moving. parts. a

In testimony whereof I have signed my 25 name to this specification, in the presence of two subscribing witnesses.

LEGER J. CASTONGUAY.

Witnesses: j

G. W. Goonmnon, H. "W. GOLDSBOROUGH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatexits. Washington, D. G."

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