US1028258A - Electric cut-out. - Google Patents

Description

' M wanton `Pawnted June 4,' 1912.

T. E. MURRAY.` ELECTRIC GUT-OUT. l APPLICATION Hmm 1120.9, 191,1. 1,028,258.

@Vi/mmc@ 'Q THOMAS E. MURR\AY,. 0F NEW YORK, N. Y.

masses.

T 0 all whom/1f may concern:

Be it known/that l, xTHOMAS E. Eliminar,

a citizen of the United States, residingat ,base in box form is divided into two conia bifurcated switch member-here compristherein.

In the accompanying draWings-Figure l is a vertical section of my cut-out. Fig. '2 is a horizontal section yon the line m, of Fig. 1. Fig. 3 vshows one ofthe cover ,clamping plates in perspective.

Similar letters and numbers 'ot reference indicate like arts.

' The base i preferably of porcelain or other refractory insulating material, is bonshaped, with an internal partition B. ln the bottom and respectively on each side of the partition-'are metal strips C, D, said strips having upwardly projecting portions which coperate to form clips with similarly -bent portions of metal conducting strips E, F. The strips E, F are disposed in recesses made in opposite Walls of said base. Said recesses are enlarged and dovetailed to receive dovetailed sliding pieces G, H, which cover strips E, F and rest upon the horizontal portions thereof. The strips E, F are secured tothe circuit leads 1, 2 inv thev following manner: At one end of a' cylindrical metal block 3 is formed a threaded projection 4, which is received .in

a correspondingly threaded opening in the strip E or F, the block 3 then entering an opening formedin the Wall of the base.

Specification of Letters Yatent.'

- manipulated ELECTRIC* CUT-OUT.

Patented Julie d, 192W.

Application filed December 9, 1911. SerialNo. 664,704.

Said opening is .larger in diameter than said block. The `clearance space between block and openin'giis filled with comminuted ductile metal. 5, sliehasmetal lloras., which is to be .inserted by means of a tamping tool, and thereby caused to cohere 'to the ma terial of the. block. When the bloeit is of lead, lead floss is best used. ln this way, a perfectly tight lmoisture-proiif joint is produced between saidblock and. the base wall. The circuit lead 2 is inscztcd `in an open ing, preferably disposed eecentrically in the block 3, and held thereby clamping screws 6 which pass through .the upper and thicker portion of block 3. When the conductor is sheathed, as shown at 7, the covering is cut oil' to expose preferably a sufiicient length of the naked conductor to fill the openingn in block 3, and the shoulder formed by the end of the covering is brought closely up to the outer` extremity of said block. The base is provided 'with cylindrical projections l which inclose the' block 3 and the end of the covered conductor, and have in their upper portions, openings J, through which the screws 6 may he conveniently Upon the base A is disposed a sleeve K, flanged below to register with the top of said base. This sleeve is removably secured in place by means of the clam ing rings L, which are passed over the pro}ecti ons I, s0 that their flanges M extend over 'the flanges on sleeve K. Set screws N, passing through flanges M and bearing on the sleeve flanges, then hold the sleeve closely down upon-the hase. When said sleeve is secured in place vthe sliding plates G, H cannot'he removed from their recesses.

-O is a box-ahaped carrier, whichhere res ceives a cartridge fuse P. Said carrier is shouldered to; tit over the end of sleeve K and extends down into the base A, so that the lower end of the inse is in proximity to the top of partition B. One contact plate Q, disposed in said carrier, extends from the top thereof through an opening in one wall, and then protrudes below said carrier for@ sufli'cient distance to become received be tween the strips B, F when said carrier-isV seated in the hase. Another contact plate R is disposed in arecess on the lower portion ofthe carrier, passes through awall and extends downwardly so as to be received in like manner between strips C, E. @ne fuse is removed, the partition B, in addition to the dielectric, forms a barrier preventing leakage of current between the terminals at the bottom ot" said compartments.

I claim:

1. An electric cut-out, comprising a base in box form, circuit conductors longitudinally inclosed in walls ot' said base and having terminals at the bottom thereof, a cover for said hase, and a bifureated switch member disposed in said cover and having protruding contacts cooperating with said conductor terminals.

2. An electric cut-out, comprising a hase in box form, circuit conductors disposed in walls of said base and havingterminals at the bottom thereof, removable plates covering said conductors, a cover for said base, and a bifurcated switch member disposed in said cover and having protruding contacts cooperating with said conductor terminals.

A n clcctriccut-out, comprising a base in boiiv form, circuit conductors disposed in rcesses in walls of said base and having terminals at the bottom thereof, plates slidable in said recesses and covering said conductors, a cover tor said base, and a bifurcatedswitch' member disposed in said cover and having protruding contacts cooperating with said conductor terminals.

4. `An electric cut-out, con'iprising.;` a base in box form, circuit conductors disposed in walls ot said base and having terminals at the bottom tl'iereot, removable plates coverinf?r said conductors` a .sleeve detacbably supported on said box and above said covering plates, a covcusllpported ou said sleeve, and a biturcated switch member disposed in said cover and ha\,'in; r protruding contacts cooperatingY with said conductor terminals.

ln testimony \\'hereo't' l haveatlixed my j signature in presence ot' two witnesses.

JIHOMS E. MURR Y.

ll'itnesses: I

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