US923439A - Electric cut-out. - Google Patents

Description

T. R. MURRAY. ELECTRIC GURoUT.

- APPLICATION FILED JAN.13, 1909. 923,439, Patented June 1, 1909. 2 SHEETS-SHEET 1.

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Witwen@ T. E. MURRAY. ELECTRIC GUT-OUT.

Patented June 1, 1909.

2 SHEETS-SHEET 2.

THOMAS E. MURRAY, OF NEW YORK, N. Y.

ELECTRIC CUT-OUT.

Specification of Letters Patent.

Patented June 1, 1909.

Application led January 13, 1909. Serial No. 472,002.

To all whom it may concern:

Be it known that I, THoMAs E. MURRAY, a citizen of the United States, residing at New York, inthe county of New York and State of New York, have invented a certain new and useful Improvement in Electric Cut- Outs, of which the following is a specification.

The invention relates to electric cut outs, and consists in the construction, whereby after the looking seal is released, the fuse cases separately inclosed in recesses in a base of porcelain or other incombustible material may both be removed simultaneously from said recesses, or separately without one disturbing the other: also in the arrangement of the cking device and movable partition between said recesses: also in the connections for applying testing or measuring instruments to the circuit conductors entering the base: also in the various combinations more particularly `Irecited in the claims.

Inthe accompanying drawings-Figure 1 is a plan view of my cut out with the cover removed. Fig. 2 is a section on the line x, x, and Fig. 3 is a section on the line y, y, of Fig. 1. Fig'. 4 shows separately and in erspective one of the fuse case supports. ig. 5 is a similar view of one of the removable plates which form part of the side walls of the base. Fig. 6 is a bottom view of the base showing the arrangement of the grooved strip for supporting the neutral conductor, and Fig. 7 shows said strip in perspective;

Similar letters and numbers of reference indicate like parts.

A is the base block preferably made of porcelain or other incombustible material. In said block are two longitudinal recesses B, C, connected by a' transverse opening D. In the recess B are two metal clips `1 and 2 having u wardly extending arms, and in the recess are similar clips 3 and 4. The clips 1 and 2 are connected, as hereinafter described, to a circuit conductor 5, and the clips 3 and 4 to a circuit conductor `6 by means of binding screws 8. Said conductors are the plus and minus conductors of a threewire system of which 9 is the neutral conductor.I Said neutral conductor extends through a recess 10 in the under side ofthe pase block A and is supported by a'bar 11,

1 vi ed With osets 12 on its sides, which offsets enter corresponding indentations in the 7, grooved on its upper surface and pro# walls of the recess 10 when said bar is inserted in said recess, as shown in Fig. 6.

Below the opening l) and between the two recesses B, C, is a partition E, curved on its upper side to enter and it between the pairs of arms F, G of a removable forked carrier of porcelain H, which carrier, when in place upon the partition E, forms a wall between the recesses B, C, completely separating one recess from the other. The pair of arms F extends into recess B between clips 1 and 2, and the pair G extends into recess C between cli s 3 and 4.

n the side walls of the base are openings which respectively receive the shouldered plates I, J of porcelain. On the inner side of each plate is a projection. When the plate I is in place, the vprojection K thereon enters between the members of the pair of arms F, and when the plate J is in place, the projection L thereon enters between the members of the pair of arms G. The upper sides of the arms F and projection-K are made correv spondingly concave to receive the cylindrical Abody portion M of a cartridge fuse, the metal cap pieces N on the ends of which are received in the clips l and 2. Similarly the upper sides of the arms G and projection L are formed to receive the body portion of another fuse, the cap pieces of which are received in the cli s 3, 4. The carrier II with its arms F, G t us forms a support for the fuse cases which is supplementedl by the projections K, L on plates I, J.

The upper edge of the base A is rabbeted to receive aporcelain cover O, `through an opening in which passes a projection P which extends upwardly from carrier H. Arod Q passes up through partition E, carrier H and projection P thereon. Said rod has a head 18 at its lower end andv may be secured in place by cement 14, disposed in recess l0 and embedding said head. 'Through the projection P androd Q, above the cover Ois a transverse opening 15 which receives the shackle of any suitable seal fastening R, `by which means all of the assembled parts are locked in place.

The advantages of this construction are chiefly as follows: The exterior of the device presents the appearance of a solid block of porcelain, with only the single projection P protru'din from the cover. The fuse cases are comp etely inclosed in non-combustible material, each in a separate recess. The seal.

fastening being removed and the cover 'raised,` both fuse casesY may be simultaneou'sly lifted out o f their recesses by means of the forked carrier H. For convenience in` doing this, the'projection P may be notched near its upper end so as to be grasped by a pliers S. rlhe seal fastening being removed and the cover raised, either fuse case may be lifted out of its recess without disturbing the other fuse by means of the plate I or J, the projection on said plate then engaging with the under side of the fuse case. For convenience in lifting said plates, iingei notches 16 may be made in their outer faces.

It is frequently desirable togappl-y testing or measuring instruments to the circuit conductors of cut outs and Without disturbing the fuse cases or internal connections therein.

' This I provide for in my resent device, and

. screws.

the same expedient is ap icable to any a paratus of the same gener type, iii the fol owing way: The baseblock is extended beyond one of its end walls, as shown at T, and on its upper side are three partitions 17, 18, 19, wiereby four compartments 20, 21, 22, 23 are formed.- On the bottom of each compartm'ent is 'a metal plate 24 secured by a olt 25, and on each plate are three binding ing screwl is'connected by a wire 26 to the metal clip 2, and another` binding screwto the entering circuit conductor 5. In compartment 28, one binding screw is united by a wire 27 to the. metal clip 4, and another bindingl screw to the entering circuit con ductor 6. I The middle binding screws in compartments 20, 23 are respectively connected by wires 28to the middle binding screws in compartments 22, 21, and to either pair, or both pairs of the remaining binding screws in compartments 22, 21, the'testing or measuring instruments may be connected.

`1VThus to a pair of binding screws respectively iii compartments 22, 21 a voltmeter, for example, may be connected', and to the remaining pair an ammeter may be connected, the

current passing to these instruments directly from the main conductors by way of plates 24 and connecting wires 28, and hence, with- .Out passing through the fuses in the base. The edge walls U of the projection T are rabbeted to-receive a cover. V which rests upon the tops of the partitions 17, 18, 19, whichv are not so high as said ,edge walls.

I claim:

1. In an electric cut out, a base having two recesses and circuit connections therein, fuse cases in said recesses, a cover for said base, a movable partition disposed between said recesses an extending through said cover, and a locking device engaging with said artition outside of said cover.

2. n an electric cut out, a base having two recesses 4 and circuit connections therein,

fuse cases in said recesses, a cover for said In the compartment 20, one bind-.

base, a removable partition disposed be.-

tween said recesses and separate from rsaid cover, a rod secured in said base and extend two recesses, fuse cases, and circuit connections in said recesses, means for engaging and removing both of said fuse cases simultaneously fromsaid recesses, and means independent of said irst named means for engaging and removing either of said fuse cases from its recess.

5. In an electric cut out, a base having two recesses, fuse cases, and circuit connections in said recesses, and means disposed in an opening between and extending into said recesses for engaging and removing both of said fuse cases simultaneously from said recesses.

A6. In an electric cut-out, a base having a recess, a removable fuse case and circuit connections in said recess, and a separate removable carrierblock in said base having an arm extending under and receiving said fuse case.

recess, a removable fuse case and circuit connections in said recess, a cover, a separate removable carrier block having a vertical shank portion passing through an opening in said cover, and withinsaid base, an arm ex-V tending under and receiving said fuse case.

8. In an electric cut out, a base having a recess, a fuse case and circuit connections in said recess, a cover, a movable carrier in said base having an arm extending under and receiving said fuse case, a shank passing through an opening in said cover, a-rod sec ured to said base and disposed in said shank, and means for locking said rod and said shank outside of said cover.

9. In an electric "cut out, a base having two recesses, fuse cases and circuit connections in said recesses, and a removable car rier disposed in an opening between said recesses and having arms extending into said recesses below said fuse cases and receiving said fuse cases.

10. In an electric cut out, a base having two recesses, fuse cases, and circuit connections in said recesses, a cover, a removable carrier disposed in an opening between said lrecesses and passing through said cover, and

7 .r In an electric cut-out, a base having a` having arms extending into said recesses below said fuse cases and receiving said fuse cases, and means for locking said carrier to said base.

11. In an electric cut out, a base having said partition extending into said recessesy below said fuse cases.

13. In an electric cut out, a base having two recesses and circuit connections therein, fuse cases in said recesses, a removable partition between said recesses, arms on said partition extending into said recesses below said fuse cases, a cover, and means for locking said partition and cover to said base.

14. In an electric cut out, a base having a recess, a removable plate disposed in an opening in a side wall oi said recess, circuit connections in said recess, and a fuse case in said recess supported on said removable wall section.

15. In an electric cut out, a base having a recess, a removable plate disposed in an opening in a side wall of said recess, a fuse case, and circuit connections insaid recess, and an arm extending from said removable plate under said fuse case andvreceiving the same.

16. In an electric cut out, a base having a recess, a fuse case, and circuit connections in said recess, a removable support on each sideof said fuse, and arms on said su ports extending under and receiving sai fuse 17. In an electric cut out, a base having a recess, a fuse case, and circuit connections in said recess, a removable carrier in said base, a plate disposed opposite to said carrier and in an opening in a side wall of said recess, and arms on said carrier and said plate extending under and receiving said fuse case.

18. In an electric cut out, a base having two recesses and circuit connections therein, fuse cases in said recesses, a partial partition between said recesses, and a removable cari rier having a concavity on its lower side to receive the upperv edge of said partition and having arms extending into said recesses below said fuse cases and receiving the same.

19. In an electric cutout, a base having a recess, a fuse case, 'and circuit connections in said, recess, a removable carrier on said base, arms on said carrier extending under and receiving said fuse case, a plate disposed opposite to said carrier and in an opening in a side wall of said recess, and an arm on said plate extending between said carrier arms and under said fuse case and receiving the same.

20. AIn an electric cut out, a base having a recess, a cover, a fuse case, and circuit connections in said recess, a removable plate disposed in a side wall of said recess, an arm on said plate extending under and receiving said fuse case, and means for locking said cover and plate in place.

21.' In an electric cut out, a base having two recesses, fuse cases and circuit connections wholly inclosed therein, a cover countersunk in said base and extending over the partition between said recesses, and means for locking said cover to said partition.

22. In an electric cut out, a base having on its under side a channel to receive' a circuit conductor and provided with indentations in its side walls, and a removable grooved strip received in said channel" and having lateral projections entering said indentations.

23. In an electric cut-out, a base and on the exterior thereof, a support, two metallic plates thereon, va bridge cvonnectin said plates, means for connecting a termina of an external conductor to one of saidplates, and on the other plate, means for connecting thereto the terminals of a conductor enten ing said base.

2 4. In an electric cut-out, a base block 'having openings in its walls for the reception of the positive and negative conductors of a three wire system and a channel in its under side for the reception of the neutral conductor, fuse plugs in said block interposed in said positive and negative conductors, and means for sup orting said neutral conductor in said channdl.

25. In an electric cut out, a base having a horizontal projecting portion at one end, divided into two compartments, a conducting plate in each compartment, means in one Tcompartment for connecting the plate therein to circuit terminals and to the conducting plate in the other compartment, and means for connecting an external conductor to said last named plate.

26. Inan electric cut out constructed to receive the conductors of la three wire system, a base block having a transverse channel on its under side, an unbroken neutral lineY conductor extending through said channel, and a removable filling piece disposed in i said channel below and supporting said conductor.

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

THOMAS E. MURRAY. Witnesses:

GERTRUDE T. PORTER,

MAYT. MCGARRY.

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