US569576A - Wltnlesbe - Google Patents

Description

um Model.)

G. EMMETT.

ELECTRIC SWITCH. No. 569,576. Y Patented Oct. 13, 1896.

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UNITED STATES PATENT OEErcE.

GEORGE EMMETT, OF ATTLEBOROUGH, MASSACHUSETTS, ASSIGNOR TO THE l NEV ENGLAND ELECTRIC SUPPLY COMPANY, OF BOSTON, BLIASSAOHU- SETTS.

ELECTRIC SWITCH.

SPECIFICATION forming part of Letters Patent No. 569,576, dated October 13, 1896.

Application tiled February 26, 1896. Serial No. 580,841. (No model.)

To all whom, 'it may concern: line connections when for any reason it is not Be it known that I, GEORGE EMMETT, of desirable to connect the line-wires directly to Attleborough, in the county of Bristol and the posts P P2. State of Massachusetts, have invented a new The moving part of the switch consists of anduseful Improvement-inElectric Switches, aha-ndle-pieceHHH2113,madeofsomestrong 55 of which the following, taken in connection insulating material substantiallyin the shape with the accompanying drawings, is a specishown and pivoted on the screw-bolt H4. The iication. said bolt H4 is made fast in the block A by My invention relates to an electric switch suitable nuts and check-nuts. The switch Ic and cut-out device, more especially adapted segment-piece S is securely attached to the 6o to use in connection with arc-lights, although arm H2 HS of the handle-piece, and the switch well adapted for other uses, the object being segment-piece S is attached to the arm H to so construct the device that it shall be sim`- and to the handle part Il. The two segment ple, inexpensive, durable, and certain of acswitch-pieces S and S'are insulated from each tion. This object I attain by the mechanism other,but being attached to the samchandle- 65 shown in the accompanying drawings, in piece they are moved together. which* R R R2 is a spring snap-piece pivoted upon Figure l is a plan, looking from the under the bolt IFand controlled byaspi'ilig'll,which side, showing the switch in the cut-out posiis attached to the snap-piece R R' R2 by the zo tion. Fig. 2 is a plan, also from the under pin T and to the block A by the pin T2. Pins 7o side, showing the parts that more immediately K and K are inserted in the handle-piece and relate to the switch proper, the switch being serve to receive the impact of the spring snapin the position required when the lamp is in piece R R R2 and to impart a quick movecircuit. Fig. 3 is a vertical section taken on ment to the switch. The pin Il on the hanline X X of Fig. l. dle is to limit its motion, that is, when the 7 5 In the drawings, A represents lthe block handle is at the eXtreme right or left the pin upon which the several parts are mounted. ll comes in contact with the block A and This block may be of wood, hard rubber, thus stops further motion. earthenware, or of anysuitable composition. The action of my device may be explained 3o The metallic strips B B2 are fastened by as follows: The lamp or whatever electric 8o screws to the block and are each provided translatiug'deif'ice may be used is connected with a slot O, into which the lamp 'conuccto the contact-piece B and B2 in anyconventions may be inserted. ient manner. The line-wires are connected 13' is a switch-piece connected to the part directly to the posts P' P2 or indirectly to the E and is preferably made with a forked end, same through the posts P P3. Then the 85 each branch of which is somewhat yielding, switch stands in the position shown in Fig. so that when the switch segment-piece S or S l, the lamp is not in circuit and the line is is in place a double friction contact is made. complete through the post P2, switch-piece B3 is a switch-piece connected to the part D3, switch-segment S', and switch-piece D D 4o B2 and is made like the switch-piece BC to post P. lf the switch is turned to the po- 9o The switch-pieces (see Figs. l and 3) D D sition shown in Fig. 2, then the lamp is in and D2 DJhave contact ends similar to those circuit, that is, the current passes through of the switch-pieces l5' B2, already described. the post P2, switcl1-picce D2 D3, switch-seg- These switch-pieces are respectively attached ment S, and pieces B3 B2 to the lamp, thence to the binding-posts PP2. The binding-post through the lamp to the switch-piece B B, 95 P' is electrically connected by the wire XV to then through the switch-segment S" to the the binding-post P, and the post P2 is elecswitch-piece D D, to post P and to the line. trically connected by the wire lV'to the post The spring snap-piece R R' Pt2 operates as P3. The posts P and P3 are used merely for follows: In shifting the switch the user turns 5o convenience in running wires in making the the handle to an intermediate position. This 1o:

action will force the snap-piece over so that the spring T draws across the center of movement, land it is at this point that the contacts are about to be broken. Now a slight additional motion of the handle will carry the strain of the spring T past the center line and the snap-piece will be violently thrown against the pin K' and cause the switch to be thrown instantaneously over to the position shown in Fig. 2 and thus avoid any danger of forming an are.

It will be observed that the handle-piece II 4 II Il2 H3 is first to be moved by the hand of of an electric-circuit line, and fixed switchpieces connected to a translating device; with an oscillating switch-carrier having segment switch-pieces, electrically insulated from each other, adapted to put the translating device into the electric circuit, or to cut it out, and close the line-circuit, a spring snap-piece R, R', R2, a spring T, a handle for moving both the said oscillating switch-carrier and a spring snap-piece R R' R2 into such a position that the spring T will impartrapid movement to the oscillating switch-carrier, and the said spring snap-piece and spring, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 18th day of February, A. D. 1896.

GEORGE EMMETT.

Vitnesses: l

FRANK G. PARKER, I-I. M. LARRABEE.

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