US1021604A

US1021604A - Circuit-breaker.

Info

Publication number: US1021604A
Application number: US66370511A
Authority: US
Inventors: Harvey E Howe
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-12-04
Filing date: 1911-12-04
Publication date: 1912-03-26
Anticipated expiration: 1929-03-26

Description

WITNESSES I V I INVENTOR I W /ZZ'J', #0145 H. E. HOWE.

CIRCUIT BREAKER. APPLICATION FILED DEC. 4, 1911.

1,021,604. Ptgnted Mar.26, 1912.

ATTORNEYS HARVEY E. HOWE, 0F WINDBER, PENNSYLVANIA.

CIRCUIT-BREAKER.

Specification of Letters Patent.

Application filed December 4, 1911.

Patented Mar. 26, 1912. Serial No. 663,705.

To all whom it may concern:

Be it known that I, HARVEY E. I-Iown, a citizen of the United States of America, residing at VVindber, in the county of Somerset and State of Pennsylvania, have invented certain new and useful Improvements in Circuit-Breakers, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to circuit breakers, and more particularly to certain improvements upon Patent No. 9%),537, granted February 15, 1910 and Patent No. 950,922 granted March 1, 1910. i

The primary object of the present invention is to provide a simple and inexpensive circuit breaker that can be advantageously used in mines and in connection with industrial electric railways for controlling the circuits over various sections of a railway.

Another object of this invention is to provide a section breaker that provides a continuous passage for a trolley wheel from one section of the wire to another, the passage being formed by a rail or shoe carried by a knife switch that controls the passage of an electric current from one section of trolley wire to another.

I attain the above objects by a mechanical construction that will be hereinafter specifically described and then claimed, and reference will now be had to the drawing, where m:-

Figure 1 is a side elevation of the circuit breaker. Fig. 2 is a cross sectional view of the same, and Fig. 3 is a perspective view of a detached switch blade.

The reference numeral 1 denotes a flat plate preferably made of wood, although other insulation, as fiber can be used.

2 denotes a hanger riveted or otherwise connected, as at 3 to the upper edge of the plate 1, intermediate the ends thereof. This hanger is adapted to be supported'from the roof or timbers of a mine.

4. denotes wire holders riveted or otherwise connected, as at 5 to the ends of the plate 1, said holders being made of metal and incasing the ends of the plate. The holders 4 have extensions 6 provided with sockets 7 for the bent ends 8 of trolley wires or electric conductors 9. The lower edges of the extensions 6 are grooved, as at 10 to receive the wires 9 and the lower inner edges of the holders 4 are rounded, as

one of the holders 4 and pivotally mounted in said bearings by a bolt 15 and a nut 16 isthe apertured end 17 of a switch blade 18. The switch blade 18 has a handle 19 and a shield or disk 20, both of which are made of an insulating material, as hard rubber. The shield 20 prevents the hand gripping the handle 19 from contacting with 'the blade 18. 21 denotes yieldable or resilient contact arms carried by the other wire holder to receive the blade 18 and establish an electrical connection between the wire holders 4.

22 denotes a rail or shoe having the ends thereof provided with arms 23 riveted or otherwise connected, as at 2& to the blade 18. The shoe 22 is of a length corresponding to the gap 12 and said shoe has the under side thereof rounded, as at 25 to represent a continuation of the lower edges of the wire holders 4. The arms 23 of the shoe are disposed at an angle to the switch blade 18 whereby said shoe can engage the lower beveled edge of the plate 1, said shoe representing that portion of the plate removed to provide the beveled edge. words, the shoe completes the plate when the switch blade is closed, thereby providing a continuous metallic rail from one trolley wire to the other.

When the switch is swung to an open position, the shoe 22 is removed, opening the gap and one trolley wire is independent of the other with the electric circuit broken.

That I claim is 1. In a circuit breaker, a plate of insulation, trolley wire holders carried by the ends thereof, a knife switch for establishing an electrical connection between said holders, and a shoe carried by the blade of said switch to bridge the gap between said holders.

2. In a circuit breaker, a plate of insulation, trolley wire holders carried by the ends thereof and providing a gap cent-rally of the lower edge of said plate, a switch blade pivotally connected to one of said holders, con

tact arms carried by the other holderto re- In other ceive said blade and establish an electric of said switch to bridge the gap between said connection between said holders, and a shoe holders. 10 carried by said blade and adapted to bridge In testimony whereof I aflix my signature the gap between said holders. in the presence of two witnesses.

3. In a circuit breaker trolley wire hold HARVEY E. HOWE. ers providing a gap, a knife switch adapted lVit-nesses: to provide an electrical connection between Jos. T. MCCORMICK, said holders and a shoe carried by the blade J. H. HUMMELL.

Copies 01 this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.