US473435A - wiener - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1. E. P. WARNER.

ELECTRIC SWITCH.

No. 473,435. Patented Apr. 19', 1892.

(No Model.) 2 Sheets-Sheet 2.

E. P. WARNER. ELECTRIC SWITCH.

No. 473,435. Patented Apr. 19, 1892.

Wibiwd ed:

MMV

UNITED STATES- PATENT OFFICE.

ERNEST P. WVARNER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE lVESTERN ELECTRIC COMPANY, OF SAME PLACE.

ELECTRIC SWITCH.

SPECIFICATION forming part of Letters Patent No. 473,435, dated April 19, 1892. Application filed February 2, 1889. Serial No. 298,492. (No model.)

To all whom it may concern: we will consider as connected with diiferent Be it known that I, ERNEST I. IVARNER, a terminals of one dynamo-machine,whilebindcitizen of the United States, residing at Ohiing-posts e f may be considered as connected cage, in the county of (look and State of Illiwith the different terminals of another dynois, have invented a certain new and useful namo-machine. The shifter g is pivoted be- Improvement in 'lransfer-Switches, (Case No. tween the pairs of springs-that is, between 23,) of which the following is a full, clear, 0011- the springs c (l on one side of block h and cise, and exact description, reference being the springs e'f' on the other side of said block had to the accompanying drawings, forming a h. The shifter, as shown, consists of a block I part of this specification. of insulating material provided with metallic 6o Myinvention relates to electric switches of pieces gand g on opposite sides thereof. These the class employed in electric lighting for piecesg g areinsulated from oneanother and changing the connections of a lamp-circuit have convex faces adapted to press against the from one dynamo to another. pairs of springs, respectively. The handle g I5 My invention relates especially to the ciris adapted to be moved between the stops We cuit-changing device, which consists of two or to rest midway between said stops, as shown pairs of springs, the pairs being mounted on in Fig. l. The switch-box, as shown in Fig. 2, the opposite sides of an insulating-block and may be screwed up against the wall in any a pivoted shifter operated by hand, whereby convenientplace. 'lhelamp-circuit connected 20 either pair may be separated from the lampwithbinding-posts a Z) may be connected with V circuit terminals, respectively, and connected either one of the dynamo-machines, as may be together through the shifter, while the other desired. Thus, as shown in Fig. 6, the handle pair close upon said terminals, respectively. 9 being thrown to the left the springs c (1' Thus the lamp-circuit is disconnected from are closed upon lugs a b, respectively, said 25 the dynamo of one pair of springs and conlugs being connected, respectively, with the nected with the dynamo of the other pair of binding-posts a and b, as shown. In this posprings, while the circuit of the dynamo thus sition of the handle the springs c f are condisconnected is maintained through the menected together through the medium of the dium of aconnecting-piece upon the shifter. metallic piece 9 while at the same time they 30 My invention will be readily understood by are lifted from lugs a Z2 which are also conreference to the accoinpai'iying drawings, in nected with binding-posts a b, respectively. which- The plate Z, which is secured to the upper end Figure 1 is afront view of a box containing of the case and to the block 71., as shown in a switch embodying my invention, the face Figs. 1 and 2, serve as a support or hearing for 35 of the box and crank-handle being removed. the shaft of the shifter. hen the crank g Fig. 2 is a side view of the same. Fig. 3 is a is midway between the stops 1' 70, as shown in front View of the crank-hai'idle. Fig. 4. is a Figs. 1 and 4, the members of each pair of plan View of the box, showing the lamp-circuit springs will be connected together, while both terminals and the stops for limiting the movepairs will be disconnected from the terminals 40 ment of the crank. Fig. 5 is a detached pera Z) of the lamp-circuit. Moving the handle spective view of the shifter and two of the to the left allows spring 0' to close on contact circuit-changing springs. Fig. 6 is a detailed a and spring (1 to close on contact I), thus perspective View showing the manner of conlooping the dynamo connected with bindingnect-ing the circuits with the switch and the posts a binto the circuits connected with bind- 45 operation of the circuit-changing springs. ing-posts 0 cl, as before described. On the Like parts are indicated by similar letters other hand, moving the handle g to the right of reference throughout the different figures. over against the stop 7o allows spring 6 to close Referringto Fig. 6, we will considerbindingon contact a and spring f to close on contact posts a and b as connected with the different b At the same time the metallic piece g is 50 ends of the lamp-circuit. Binding-posts c d separated from said springs, and thus the lamp-circuit connected with binding-posts cab; is looped-into circuit with the dynamo 'co'nnected with binding-posts e I have described my switching device as used in connection with arc-light circuits. It

is evident that it might be used with any other circuits to which it is adapted.

Having thus described my invention, 1 claim as new and desire to secure by Letters IO Patent ihe combination, with two pairs of springs pressing inwardly, the members of each pair being adjusted to close upon diiferent con tactpieces, respectively, of 'a-'shifter,-said shifter being pivotally mounted between said springs, diiterent contacti'point's altthe "free ends of the different springs of the two pairs, the springs being of a tension to close thereon when unopposed by the shifter, whereby on rotating the shifter the electrical connections are trans- -=ferred,'substantially as-and for the purpose :"specified.

In witness whereof I hereunto subscribe my name this 6th day of December, A. D. 1888.

- ERNEST P. WARNER. Witnesses: GEORGE 1?. BARTON, CHAS; GuHAWLEY.

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