US635396A - Electric switch. - Google Patents

Description

No. 635,396. Patented Oct. 24, I899.

- J. SACHS.

ELECTRIC SWITCH.

(Application filed Oct. '15, 1898.)

(No Model.)

UNITED STATES PATENT OFFICE.

JOSEPH SACHS, OF NEIV YORK, N. Y.

ELECTRIC SWITCH.

SPECIFICATION forming part of Letters Patent No. 635,396, dated October 24, 1899.

Application filed October 15,1898. Serial No. 693,596. (No model.)

T0 at whom, it may concern.-

Be it known that I, JOSEPH SACHS, a citizen of the United States, residing at the city of New York, in the county and State of New York, have invented an Improvementin Electric Switches, of which the following is a specification.

This improvement relates to a switch @011- taining a safety-fuse. Switches have heretofore been constructed in which cut-out wires or strips are employed in connection with movable switch-blades; but where the safetyfuse blows out, the flash and are frequently cause injury to the switch parts, and the peculiar manner in which the fuse is attached to the switch makes it unreliable as a cut-out, and the switch is complex and expensive.

My improved switch can be used for simultaneously controlling two or more electric circuits, and the construction is such that the cutout and switch-blade portions are separate from the carrier, to which they are removably secured, so that when a cut-out is disrupted it can be detached and a new one inserted.

In the drawings, Figure l is a plan view, partially in section, representing the present improvement. Fig. 2 is an end view, also partially in section; and Fig. 3 is a side view of the switch.

The cut-out or safety fuse is composed of the case A, of insulating material, such as vulcanite, and there are heads B, fitting tightly at the end, and they contain the contacts 0, which are preferably in the form of plates or blades extending sufficiently into the case to be permanently secured thereto and projecting so as to pass into stationary clips, and the fusible strip or wire D is connected with the terminals and is of the proper size and character to be melted or disrupted when the current reaches the maximum value. I11 the construction shown the terminals 0 are held in the case by pins E, which pass through the case and through the terminals, so as to secure the parts very firmly together, and the contacts or terminal plates 0 are advantageously cementedinto the ends of the case or held by divided plugs. Two, three, or more of these cut-outs are made use of, according to the number of circuits that are operated in one switch. I have represented two of these fusible cut-outs, onc at each side of the switch-body F, and the edges of this body are grooved so as to receive the sides of the cases A, and the cross-pins E project from the cases, and there are holes or recesses in the body F for the reception of the ends of these crosspins, so that the cases and fusible cut-outs are prevented from moving longitudinally of the body, and a suitable handle G is connected with or formed upon the body F, and there are clips I'I, advantageously with segmental ends, that-are applied at each side of the body F and are drawn together by a screw or bolt I, so that the clips firmly embrace and hold the case of the fusible cut-outs and the con tacts or terminals 0 are in parallel planes.

The clips or forks K L of the external circuit connections are upon a suitable base M, of insulating material, and these clips are each in the form of two-plates adapted to receive between them one of the plate-terminals O, and the parts are brought together by a turning or sliding movement which i11- sures the intimate metallic contact of the terminals Owith the clips, and one set of forked clips should form pivots for the switch.

It is advantageous to perforate the terminals C, as shown at 3, and the set of forked clips K are formed with inward projections or teats a upon the inner faces of the blades, and these projections are in such a position that when the terminals 0 are pressed in between the plates formin g the clips K such clips are sprung apart and the projections 4. enter the holes 3 to form pivots upon which the switch can be swung up or down in opening or closing the circuit. I remark that by perforating all the terminals 0 the switch can be entered in either direction into the forked clips of the external circuit.

It will be observed that each cut-out is complete in itself, containing end terminals, a fusible strip, and a case for firmly holding all the parts, and that one cut-out can be removed and another substituted very quickly in case of injury or the blowing out of the fuse. I do not, however, limit myself to any particular details of construction of the fuse or the case or means for holding the same.

I claim as my invention- 1. In an electric switch, the combination with the stationary clips forming the circuitterminals, of a safety cut-out having an in.-

elosin g case and projecting terminals adapted to pass into the stationary clips an d a switchbody and means for removably clamping the safety cut-out to the switch-body, substantially as set forth.

2. In an electric switch, the combination with the stationary clips forming the circuitterminals, of two independentfusible cut-outs and their inclosin g cases and rigid projecting condnoting-terminals passing into the stationary clips and a switch-body and means for removably connecting the cut-outs to the switch-body, substantially as set forth.

3. In an electric switch, the combination with the stationary clips forming the circuitterminals, of a safety cut-out having an inolosin g case and projecting terminals adapted to pass into the stationary clips and a switchbody and means for rcmovably clamping the safety cut-out to the switch-body, and means for determining the relative positions of the terminals to the switch-body before clamping the same, substantially as set forth.

4. The combination with the handle and body, of a safety-fuse having a case, terminals extending out at the ends of the case, a cross-pin at each end for securing the terminals, such pin projecting at one side of the case and entering a recess or hole in the body,

and clips with segmental ends for grasping and holding the case of the safety-f use at the side of the switch-body, substantially as set forth.

5. A handle and switch-body segmentally grooved on the edges, in combination with two safety-fuses, each having a case with proj ectin g plate-terminals in parallel planes,pins passing through the cases and through the terminals for holding them in position, the

ends of the pins projecting and passing into holes or recesses in the switch body and clamps with segmental ends,and a cross-screw for holding the safety-fuse cases permanently in position at the sides of the switch-body, substantially as set forth.

6. The combination with the safety-fuse and the containing-case, of plate-terminals at opposite ends of the case, cross-pins passing through the case and through the terminals for holding the parts in position, there being holes in the plate-terminals and forked clips having inward projections or teats to pass into the hole of the terminal, substantially as set forth.

7. The combination with the handle and body and the clamping devices, of a safetyfuse and its surrounding case, terminals projecting at the ends of the case and cross-pins passing through the case and securing the terminals and projecting at one side of said case and passing into holes in the switch-body for aiding in retaining the case and safety-fuse in position in the switch, substantially as set forth.

8. The combination in an electric switch having stationary clips, of two safety-fuses and their supporting-cases and permanentlyattached metallic terminals, a clamp and switch-bod y for removably holding the safetyfuses together and allowing the metallic terminals to be connected to or disconnected from the clips, substantially as set forth.

Signed by me this 24th day of March, 1898.

JOSEPH SACHS.

\Vitnesses GEO. T. PINCKNEY, S. T. HAVILAND.

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