US1048857A - Electric cut-out. - Google Patents

Description

T. E. MURRAY.

ELECTRIC GUT-OUT.

1 APPLICATION FILED MAY 31, 1912.

1,048,857; Patented Dec. 31,1912.

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PPLIGATION IILED MAY 31, 1912 Patented Dec. 31, 1912.

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III/I THOMAS E. MURRAY, OF NEW YORK, N. Y.

ELECTRIC CUT- OUT.

Specification of Letters Patent. Application filed May 31, 1912. Serial No. 700,598.

Patented Dec. 31,1912.

To all whom it may concern:

Be it known that I, THOMAS .E. MURRAY, a citizen of the United States, residing at New York, in the 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, hereinafter set forth, whereby the fuse case and connections are rotected from moisture, and whereby the use case may be conveniently removed without short-circuit-ing or danger to the operator.

In the accompanying drawings-Figure 1 is a front elevation, and Fig. 2 a side elevation of my cut-out. Fig. 3 is a vertical section on the line a:,'a: of Fig. 1, and Fig.

4 is a horizontal section on the line 3 y of Fig. 3. In Figs. 3 and 4 the attaching strap and support are omitted.

Similar numbers of reference indicate like parts.

1 is a cylindrical casing of insulating re fractory material, such as porcelain, secured to any suitable support 2 by means of the strap 3 bolted to said support and received between a flange 4 on said casing and side projections 5 thereon.

inner periphery of the casing is formed a longitudinal recess to receive a bar 6 of porcelain, the face of which is made concave, to correspond to the remainder of said peripher On the flatside' of said bar is secured y a screw 7, a metal plate 8, which is bent at right angles at 9 so as to extend over the upper end of said bar and lie fiat against the top wall of said casing. These parts are connected before bar 6is seated in the casing recess. In the upper end of the casing and bearing against the part 9 of plate 8 is an inverted metal cup 10, which receives the end cap 11 of a cart-ridge fuse case 12. The other end cap 13 is seated in a similar cup 14. To said end cap 13 is secured a metal plate 18. The cup 14 is received in a shallow recess in the upper face of a plug 15 of insulatin material which is provided with a dependlng handle 16. A screw 17 enters a countersink in said handle and extends through the'cup 14 and engages in the plate 18. Seated in the wall of casing 1 is a semicircular metalplate 19, which makes contact with cup 14. The

upper face of plug 15 bears against the In one side of the lower edge of plate 1.9 and uPQILa shoulder in the casing. A metal tubular lug 20, shouldered and threaded at its end, enters one projection 5 and engages plate 8. A similar plug 23 enters .the'other projection 5 and engages plate 19. 'The sheathed leads 21, 22 are denuded at their ends to enter plugs 20, 23, and are secured therein by countersunk screws 24. 4

In assembling the parts, the bar 6, with plate 8 attached, and the plate 19 are inserted in the casing, and secured by the plugs 20, 23. The upper end cup. 10 may then be put in place. The fuse case 12, seated in the lower cup 14, resting in the plug 15 and attached thereto by screw 17, is then introduced, and the leads .21, 22 are connected as described. I

In order to hold the plug 15 in place, a leaf spring 25, Figs. 1 and 2, is provided. Said spring is attached to the strap 3 at its upper end, and at its lower end has a toe'26 which extends through a notch in the casing and engages beneath the enlarged portion of the plug 15.

By this construction, the fuse case and all the joints and connections are protected from moisture. The fuse case is easily removed by disengaging spring 25 and draw.- ing down the plug 15 by means of the handle 16. The screw 17 is removed to detach the fuse case from the lower cup 14.

I claim: 1. An electric cut-out, comprising a cupshaped casing, contacts within said casing and at opposite ends thereof, connections in the wall of said casing and leading to said contacts respectively, and'a removable plug of insulating material received in and closing the open end of said casing.

2. An electric cut-out, comprising a cupshaped casing, cup-shaped contacts within said casing and at opposite ends thereof, connections in the wall ofsaid casing and leading to said contacts respectively, and a removable plug of insulating material received in and closing the open end of said casing.

3. An electric cut-out, comprising a cupshaped casing, a contact secured within said casing and at the closed end thereof, a removable contact within said casing, connections in the wall of said casing and leading to said contacts respectively, a removable plug of insulating material received in and 7 closing the open end of said casing, and

means for securing said removable contact to said plug.

4. An electric cut-out, comprising a cup shaped casing, two cup-shaped contacts therein, a fuse case having its terminals entering said contacts, a plug closing said casing, and a screW passing through said plug and one of said cup-shaped contacts and engaging with the fuse case terminal therein.

5. An electric cut-out, comprising an inverted cup-shaped casing, having integral projections on each side, meta-l circuit ter minal plugs seated in said projections, cupshaped contacts in said casing electrically connected to said plugs, and a fuse case with its terminals received in said cup-shaped contacts.

6. An electric cut-out, comprising an in-- verted cup-shaped casing, of insulating material, a bar of insulating material seated in a longitudinal recess on the inner periphery of said casing, a plate of conducting material in said recess and secured on said bar bar, a fuse case in said casing, having one.

terminal electrically connected to said plate,

and means on said casing for connecting the other terminal of said fuse case in circuit.

7. An electric cut-out, comprising an in verted cup-shaped casing, of insulating material, a plate of conducting material seated in, the inner periphery of said casing, a circuit terminal. plug entering said casing and engaging said plate, a fuse case in said casing, having one terminal electrically connected to said plate, and means on said casing for connecting the other terminal of said fuse case in circuit. 1

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

THOMAS E. MURRAY. Witnesses:

GERTRUDE T, PORTER, MAY T. MCGARRY.

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