US648555A

US648555A - Electric switch.

Info

Publication number: US648555A
Application number: US62418597A
Authority: US
Inventors: William Ely
Original assignee: Individual
Current assignee: Individual
Priority date: 1897-02-19
Filing date: 1897-02-19
Publication date: 1900-05-01
Anticipated expiration: 1917-05-01

Description

No. 648,555. Patented May l, 1900. W. ELY.'

ELECTRIC SWITCH.

@Application led Feb. 19, 1897.)

2 Sheets-*Sheet l.

(N 0, MOUQL);

No. 648,555. Patented May I, |900.

W ELY ELECTRIC SWITGH.

(Application filed Feb. 19, 1897.)

2 Sheets-Sheet 2.

(No Model.)

"TATES l faire Partnr iFFiCE-i ELECTREC SWHTCH.'

SPECIFICATION :forming part of Letters Patent No. 648,555, dated May 1, 19O.

' Application filed February 19 1897. Serial No. 624,185. (No model.)

l'o all whom it may concern:

Be it known that I, WILLIAM ELY, a citizen of the United States, and a resident of the city and county of Providence, in the State of Rhode Island, have invented a new and useful Electric Switch, of which the following is a specification.

The purpose of my invention is to provide an electric switch adapted to make or break with sudden rapid positive movement one or more circuits or to transfer the load with like movement from one or more circuits to other circuits located either in the same plane or at an angle of one hundred and eighty d egrees or less relatively to each other and to automatically lock itself releasably at the termination of each movement.

My invention consists in the novel construction, combination, and arrangement of the knife actuating and locking mechanism.

In the accompanying drawings, Figure 1 is a perspective view of an electric switch constructed according to my invention. Fig. 2 is a side elevation showing the knife actuating and locking-mechanism. Fig. 8 is a partial section on line 3 3 of Fig. 2. Fig. 4 is a side elevation showing the application of my invention to a switch having a throw of only ninety degrees. Fig. 5 is a perspective view illustrating another feature of my invention.

Similar reference-numerals indicate like parts where they occur in the drawings.

1 represents the base, constructed of insulating material,its surface being formed either in a single plane or by two plane surfaces arranged angularly to each other. 2 and 3 are supports or housings rigidly secured upon said base. 4 is a shaftjournaledin said housings and provided, if desired, with means, as

adjustable collars

5 and 6, for preventing endwise movement or play of said shaft. The knives or contact-

arms

7 and 8 are preferably beveled on their upper and lower edges and are secured to an insulating-block 9, in turn secured upon the said shaft and carried thereby. A crank or arm 10, rigidly secured upon said shaft, extends at right angles therefrom and is rotatable therewith. The free end of said crank-arm is fitted for engagement releasably, at the termination of its movement in either direction, with a spring-controlled pivoted catch 15 16, whereby it is locked in position. Said catches may be formed, as shown, with laterally-extending lugs 15 16', adapted for engagement by a spring 17, by which the pivotal movement of said catches is controlled. Pivotal movement of. said catches, respectively, is induced by the con# tactua'l engagement with them for the purpose of releasing them from engagement with the free end Vof the crank-arm 10 of an extension-arm 13 of alever 11, loosely pivoted upon the shaft 4 and provided, if desired, with an insulated handle l2. Such extension-arm may be eitherin line with said lever, as shown in Figs. l and 2, or laterally directed therefrom, as shown in Fig. 4. An extensible spring 14, secured to the free end of said crank-arm l0 and to the said lever 11 at a point intermediate of the length of the latter, serves both as a means for connecting said lever and crank and as a means for actuating said crank after it is released from the

catches

15 or 16.

1S and 19 are contact posts or brushes secured upon the base in the ordinary manner and connected with the main wires (not shown) of a circuit. 2O and 2l are other contact posts or brushes similarly secured upon the base in line with the first-mentioned posts and connected with the service-wires. (Not shown.) The described posts are arranged,as shown,at one side of the shaft. On the other side of said shaft are

other contactposts

22 and 23, secured upon said base and connected with the main wires (not shown) of another circuit, and 24 and 25 are still other contact-posts secured upon said base in line with the posts before mentioned and connected with the service-wires (not shown) of said other circuit.

It will be noted that the lever 11 being pivoted loosely upon the shaft will have movement thereon without reference to the movement of said shaft and that its eXtension end (offset, if necessary, for the purpose) will at nearly the completion of the rotation of the lever contact with the underside ofl the crank-arm 10 and serve as a means for imparting initial positive movement to said crank and its shaft to start the contact-knives from the contact-posts and overcome the frictional and other resistance which might tend to retard the movement of the knives.

Modifications in the parts shown may be made Without departing from the principle of my invention. Other forms of spring may be employed to control the movement of the catches. Springs as a means for controlling,` the movement of the catches may be dispensed with, in Which case the catches may have capacity to yield and react spring-like for purposes of locking and releasing the crank-arm 10. The catches may also be dispensed with, and in this form of my invention the extension end of the lever ll will when brought into contact With said crankarm act, as hereinbefore described, to impart initial positive movement to the said crankarm, shaft, and the parts carried by the latter t overcome the frictional and other resistance between the contact knives or plates and the contact posts or brushes. The eX- tensible spring l-i will, as hereinbefore described, act to accelerate and complete the rotative movement of said crank-arm and the parts connected to and moved by the latter.

I prefer to dispense with the insulating'- bloek O and to construct the rotatable shaft et entirely of insulating material and to secure the contact knives or plates directly upon said shaft. I have shown in Fig. 5 a convenient form of embodying` this feature of my invention, in which the shaft 9 is constructed of insulating; material and provided at either end with journals, preferably of metal. Such shaft is mounted upon the base for rotatable movement, hereinbefore described. By this construction I am enabled to obviate the liability of the current jumping.;` from one contact member to the metallic shaft and thence to the other contact member, and thereby forming a short circuit.

l claim as myinventien and desire te secure by Letters Patentl. The combination With the base-plate of insulating,` material, the shaft arranged parallcl with said base-plate, and one or more contact knives or blades carried on one side of said shaft, of the corresponding` sets of eircuit-terminals arranged at opposite sides of the shaft in the plane of the movement of the contactblade, the actuatinglever loosely held upon said shaft, and the spring connecting the shaft With the actuating-lever, Whereby upon the movement of the actuating-lever in either direction the spring connection Will cause the independent sudden transference of the contact-blade from one set of circuitterminals to the opposite set in a plane perpendicular to the plane of the base-plate.

2. The combination With the base, the shaft of insulating material arranged parallel With said base, and one er more contact knives or blades carried on one side of said shaft, of the corresponding sets of circuit-terminals arranged at opposite sides of the shaft in the plane of the movement of the contact-blade, the actuatinglever loosely held upon said shaft, and the spring connecting,` the shaft with the actuating-lever, whereby upon the movement of the actuating-lever in either direction the spring,` connection will cause the independent sudden transference of the contact-blade from one set of ciremt-terminals to the opposite set in a plane perpendicular to theplane ofthe base, substantially as specified.

3. In an electric switch, the combination With a base, of a shaft ef insulating,I material rotatably mounted on said base one or more contact knives or blades carried on one side of said shaft, a crank-arm secured upon said shaft, spring-controlled catches adapted to engage and lock said. crank-arm at the termination of its movement in either direction, a lever loosely piveted upon said shaft and rotatable Without reference to the movement of the latter, and adapted to move said respective catches against the resistance of their controlling-spring, and a spring connecting1 said lever and crank-arm and adapted to rotate said crank-arm when the latter is otherwise released.

in testimony whereof l have hereunto set my hand, in presence of two witnesses, this 18th day of February, i997.

WILLMM RLY.

lVitncsses:

HENRY Manen, J r., Wriimiratr Il. Frrmmifrcus.