US493328A

US493328A - Multiple terminal cut-out

Info

Publication number: US493328A
Authority: US
Publication date: 1893-03-14
Anticipated expiration: 1910-03-14

Description

(N0 Model L. P. BONEBRAKE.

MULTIPLE TERMINAL GUT-OUT. No. 493,328. Patented'MaJr. 14, 1893.

PATENT OFFICE.

LARK P. BONEBRAKE, OF MARYVILLE, MISSOURI.

MULTIPLE TERMINAL CUT-OUT.

SPECIFICATION forming part of Letters Patent No.

493,328, dated March 14., 1893.

Application filed November 10, 1892. Serial No. 451,551- (No model.)

To all whom it may concern.-

Be it known that I, LARK P. BONEBRAKE, a citizen of the United States of America, residing at Maryville, in the county of Nodaway and State of Missouri, have invented certain newand useful Improvements in Multiple Terminal Cut-Outs, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to multiple terminal cut-outs for electric circuits, and has for its object the improvements set forth in the following specification and especially pointed out in the claim.

The annexed drawing represents a plan view of my improved cut-out, in which Aindicates a base of any suitable non-conducting material, upon which maybe arranged one or more cut-outs, the drawing showing two; but a description of one will answer, as each is a duplicate of the other. Upon the base A are secured metal plates B and O, the plate 0 being sunk until its face is flush with that of the base, the object of which is to allow the circuit closer e to bear against the base to prevent its binding upon the pivot, thus securing a free movement. The circuit closerehas its central bearing on a fixed stud is attached to the plate 0; to this stud is secured the inner end of a volute spring g, the outer end of which is attached to the side of circuit closer 6. Upon the end of the circuit closer is secured a contact spring f. When the wires hare fused, the circuit closer will pass from one of the levers (Z to the other, making contact therewith and closing the circuit through the next succeeding lever d. The levers d are pivoted to the base at cl, and are connected at the opposite end of the fusible ends of the wires h by means of binding screws h, the other end of said wires being attached to the metal plate B in like manner; the levers d are normally held against pins m by the wires 72.; when in this position their shorter ends form a series of stops and contact points for the circuit closer e, which normally rests against the lever (Z to the extreme right or left of the series in which position the circuit closers remain until a current of greater intensity than the wires it will carry enters, when the wire in circuit will be fused and lever (Z having nothing to support it, against the pressure of the circuit closer 6, will turn on its pivot d, thus releasing the closer e which is turned by the spring g until it makes contact with the next lever d of the series, thus establishing the circuit through the second lever of the series. In this way the circuit can be re-established automatically after each interruption, until all the wires h have been burned out.

My improvement consists in pivoting the levers d on a circular line so that all the levers d are of one length, making a uniform tension on wires h when the circuit closer is in contact; also in providing the stops or pins m to prevent the levers from being displaced before the wires hare fused; and in pivoting the levers d and circuit closer e flush with the base A, which prevents lateral motion and consequent binding upon the pivots; and spring f on the end of circuit closer e to insure perfect contact with lever (Z.

I am aware that it is not new to provide a series of contact points connected with the main line by fusible wires and a spring impelled circuit closer, and I therefore lay no claim to such structure broadly.

IVhat I do claim as new, and desire to secure by Letters Patent, is-

A multiple terminal cut-out, consisting of a series of contact levers pivoted on a circular line and held to position by a series of pins and fusible wires, the latter connecting with the main line, in combination with a spring actuated circuit closer pivoted concentric to said contact levers, and spring on the end of the circuit closer, substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

LARK P. BONEBRAKE.

Witnesses:

FRED A. RowLnY, DALE V. ALDERMAN.