US1021746A - Oil-switch. - Google Patents

Description

C. C. BADEAU.

OIL'SWITGH.

APPLICATION FILED 121113.20. 1909.

1,021,746. Patented m2111263 1912.

.WHO reey.

AUNITED STATES PATENT OFFICE. CHARLES C. BADEAU, 0F *BIOS'I'OlNAQ MASSAC-HUSETTS, ASSIGNOR T0 SEARS'` CONDIT, i

JB, BOSTON, MASSACHUSETTS. i

OIL-SWITCH. 4

Patented Mar. 26,1912.

To all whom it may concern:

Be it known that I, CHARLES C. BADEAU, a citizen of the United States, residing at Boston, in the county of Suffolk and 'State' of Massachusetts,have invented an Im rovement in Oil-Switches, of which the ollowing description, in connection with the ac- .ompanying drawings, isa specification, like letters on the drawings representing like parts.

My invention is an oil -vwell circuit breaker and has for its object, besides certain vconstructional advantages, the provision of means permitting the removal of the oil-well from the circuit breaker by a very little downward movement inasmuch as the circuit breaker itself moves Vupward out of the oil pan, leaving the latter free for removal with slight drop. Also the lower or laminated brush contact is easilyinspected, as it is deadwhen in position tobe inspected and not near the other terminals when the pan is removed. These and further advantages of my invention will be pointed vout in the course of the following description, taken. with reference to the accompanying drawings, in which I have illustrated one form of my invention.

In the drawingsI have shown a central vertical cross-sectional view ofthe appa-V ratus.

The pan 1 with a usual wood lining 2 and complement of oil 3, may be of any usual or preferred shape and general construction, being herein shown as suspended by bolts 4l and wing nuts 5 from a top plate or bracket (iconstituting a cover-support for the switch supported at 7 Secured to the bottom of Y 'the oil pan by a suitable insulating support 8 is a brush contact member 9 preferably laminated, arranged to contact at its oppo-` site ends with terminals 10, 11, clamped by nuts 12 on a carrier 13 herein shown as perforated at 14 'to facilitate `its movement through the oil. Split terminals 15, 16 eX- tend upwardly from the contacts 10, 11, in

`sliding contact .with conductor tubes or sleeves 17, 18, mounted in porcelain posts or insulators 19 in the top 6, from which eX- tend conductors 20, 21 in usual manner. The carrier or supporting bridge 13 of the movable contacts 10, 11 may be operated by `any suitable means, being herein shown as supported by a rod 22 having vertical movement through a bearing, 23`and actuated by an operating rod or handle 24 and bell crank .25 -pivoted at 2.6 to a stationary part 27 In use, the switch breaks upward by the upward'Amovement of the rod 22, thereby causing the contacts 10, 11 to separate vfrom the bridging contacter laminated brush 9.

As it breaks upward it reachesthe dotted line position above the oil, thereby having v the advantage of lifting into the air, which is a better insulator than ca'rbonxzed oil, although the latter is satisfactory for the circuit to breakin but is Anot of much value as an insulator. When it is desired to remove the oil pan the switch is broken, there- This economizes space on the back of they switch-board Where these oil switches are usually mounted. Having lremoved the o il pan, the laminated' brush 1s easily inspected in' the bottom of said pan. Also as it is entirely separated from its coperating terminals 10, 1l, when thus removed, there is so l the advantage of being able to linspect the apparatus when the terminals are -absolutely dead and beyond any possibility of danger. By having the upturned bridging contact secured in the bottom of the pan, and preferably centrally fastened directly to the bottom as shown, and all the other parts removable therefrom, it becomes an exceedingly simple matter for the operator to wipe oli1 or file and even-up the ends of the bridging contacts, and, when the latter is laminated, to remove or addlaminae'in case any of the leaves break, corrode, burn out, or get otherwise. injured. v

It willl beunderstood that many changes in mechanical detail may be resorted to within the spirit and scope of my invention as defined inthe appended claims.

Having described my invention, what I desire to secure by Letters Patent, is,

1. An oil switch apparatus, comprising aioo support having an oil container cover fixed ,theret-o, spaced apart line terminals carried able contacts in` sliding frict-ional engage;v

ment with said line'terminals, said contacts at their lower `limit of movement engaging

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