US408194A - Harry tit-den riggs - Google Patents

Description

(No Model.) Y

I-LT. RIGGS. ELECTRIC SWITCH.

NVENTOR. Harry zf/ys ATTORNEY.

Patented July 30, 1889.

PVZ'VESSES,

NITED STATES PATENT OFFICE,-

nAn-EY frILnEN Ricos, von rnnnrne'ron, MAINE, AssIeNon oEoNE-HALF rro ALVIN s. Brees, oF SAME PLACE.

ELEC-rale s wiTci-i.YA

SPECIFICATION forming part of Letters' Patent No. 408,194', dated July 30, 1889. Application filed February 19, 1889. Serial No. 300,417. (No model.)` i

To all when@ it may concern:l 4 Bc it known that I, HARRY TILDEN Ricos, a citizen of the United States,'residing in Farmington, in the county of Franklin and State of Maine, haveinvented certain new and useful Improvements in Electric Switches, of which the following is a specification. L

My invention relates to electric switches, the object. being to provide a switch which 1o may be used in connection with motors for reversing the current or for opening the circuit. .y 5

A further object is to provide a switch of very. simple and yet of c heap construction.

Theinvention consists in the details ol construction which will now be fully described, and particularly pointed out in the claims. Referring to the accompanying drawings, Figure l represents a vertical central section no of my improved switch-` Fig. 2 vrepresents a plan of the same.; and Fig. 3 is a detail view, insection, of a modification of the switch.

Referring to the drawings by letter, A represents a base or support, made, preferably,

5 ot hard rubber or other suitable insulating material. rl`here is inserted in the base two blocks of metal ct n., to which are electricallyY connected the terminals in m of the main circuit. lhose blocks ol' metal are inserted' 3c in the base, so that their upper surfaces are tlush with the uppersurt'ace of the base.

ll represents a center rotating post. rlhis is lixefl in the base-piece A, so that it may be easily rotated in either direction. It is held in its position by a flange t) at its lower end and by the arms carrying the contacts, as will appear later on. rlhe lower end of this post is hollow, the chamber extending some distance up into the post. rl`here is attached to opposite s ides of the post, by means of rivets or in any other desired and efficient manper, two spring-arms b 1;. At their outer ends these arms have attmhed to them downwardly-prejecting lugs '/f" .lllesc lugs are composed of metallic portions and portions of hard rubber or other insulating material located between the metallic portions and the spring-arins Z2. The 'metallic lugs b2 rest upon the surface ot/the base, and they' are pressed in contact therewith by the spring` arms b. The terminals f-fof the branch circuit are led in through the hollow post, and, extending through lateral openings hf in the post, are attached, respectively, to the Inetallie lugs b2. It will thus be seen that-When the-lugs b2 are in'contact, respectively, with, the blocks a the circuit is completed through the branch. The upper end of the post is provided with a cross-head or other form of device to aid-in turning. 6o

The operation of the switch is obvious. By rotating the post the lugs b2 are brought into contactwith theblocks a a to complete the circuit, or are moved outiof contact therewith to break the circuit, or may be given a halfturn and their position reversed, thus reversing the direction of the current ,through the branch. This, as will be seen, is accomplished by a very simple movement.

I'do not confine myself to any particular 7o manner or arrangement of springs for maintaining the lugs b2 in contact with the surface of the base A or blocks o. This maybe done yby making the arms h springs, as described;v or, as shown in Fig. 3, a coil-spring 75 @may be placed around the hase of the post to bear upon the flange upon the end thereof and upon the base-piece. The tendency of this spring would be to draw thelugs against the base-piece- In this instance, also, the arm 8o y supporting the lugs b2 may be made of stili metal or of wood.

My object in running branch wires directly to the lugs b2, instead of connecting them with the springs b', is yto obviate the diiiicul'ty 85 heretofore enconntered'in switches where the operative springs serve as conductors for the current. In such instances the heating eftoets of the current will in time draw the temper ot' the springs. y 9o Having nowdescribed my invention, I claiml. In an electric switch, a center rotating post havin g attached thereto by means oi' lateral arms two contact pieces or lugs, the said post being hollow and the two terminals of the circuit entering the structure of the switch through thehollow postand extending through lateral openings in said post to the Contact pieces or lugs mentioned, all in eomzoo bination with a base-picywhich supports ing, respectively, with the linsulated termi-.

' the said post, and-also two terminals of acirnals. l

cuit corresponding tothe terminals ixecl to In Witness whereof I have hereunto Signed the post, substantially asdescribed. my name in the presence of two subscribing 5 2. In4 an electric Switch, a rotating hollow witnesses.

-post having attached thereto two spring-arrns HARRY TILDEN RGGS bearing at their outer ends metallic circuitterminals, the spring-arms being insulated `Witnesses: from the terminals, and the circuit-wires lead'- BENJ. GOODWIN, 1o ing in through the hollow, post and connect- A. S. RIGGS.

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