US933787A - Fuse-receptacle. - Google Patents

Description

B. P. ROWE dz S. M. KINTNBR.

FUSE BEOBPTAGLE. unieuro! FILED een'. 2o, leo'e.

Patented Sept. 14. 1909.

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INVENTORS TTORNEY B. P. ROWE n S. M. KINTNBR.

l FUSE BEGEPVTAOLE. APPLICATION FILED SEPT. 20, 1906.

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BERTRAND P. ROWE, F WILKINSBURG, AND SAMUEL M. ,KINTNER, 0F PITTSBURG, PENNSYLVANIA, ASSIGNORS TO WESTINGI-IOUSE ELECTRIC a MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

FUSE-RECEPTACLE.

-Speccation of Letters Patent.

Patented Sept. 14, 1909.

Application iled September 20, 1906. Serial No. 335,509.

l'o all whom fit may concern:

Be it known that we, BERTRAND P. Rown and SAuUEL M. Krn'risnm'citizens of the United States, and residents, respectively, of Wilkinsburg and of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement inFuse-Beceptacles, of which the following is a specification.

Our invention relates to inclosing and supporting means for electricalfcircuit fuses, and it has for its object to provide a structure of the character indicated which shall be specially adapted for the protection of apparatus utilized in connection with high potentiall circuits, such, for example, as

transformers, ground detectors, etc.

In the accompanying drawings, Figure 1 is a longitudinal sectional view of apparatus embodying our invention, a portion of the linsulator upon which the,l apparatus is mounted being also shown partially in` elevation and partially in section. Fig. 2 is a longitudinal sectional view of a modified form of our apparatus and a portion of a transformer casing, in elevation, upon which the apparatus is mounted.

Referring rst to F ig. 1, the fusible wire or strip 1, whichis utilized for interrupting the circuit in case of an eXcessive flow of current therethrough, is preferably located within a tube 2 of glass or other easily fractured material, its ends being connected to terminals 3 and 4 in the usualfor any suitable manner. The terminal 4 has a screwthreaded connection with a rod 5 which projects through the lower end 6EL of a shell or casing 6 formed of porcelain or other suitable insulating material, the outer sur- ,l face of which may be corrugated, as indi-- cated. The rod 5 is connected, by means of 4nuts 7, to a terminal block 8 that is provided with suitable binding screws- 9 and is securely mounted upon an insulator 10 of anyy suitable construction, here indicated as of the multi-'petticoat type such as is used in high tension work. v

The opening through the lower end of' the casing 6 to receive the rod 5 is packed. to preventthe passage of Huid therethrough, by means of suitable gaskets 11. The terminal 3 is connected to a disk 12 and bracket 13 near the upper end of 'the casing. 6 by means of a spring 14, which is normally held under tension by the receptacle 2, so that, when the receptacle is shattered by the blowing of-the fuse 1, the terminal 3 will be quickly moved to a materially greater dis: tance from the terminal 4 than it occupies when the fuse and its receptacle are intact. The casing 6 is preferably partially filled with oil or other insulating liquids, as indicated in the drawings, and the bracket-'13 is l fastened to the lower end of a tube 15 which projects through an opening in the cap or cover 16 of the casing 6, this tube serving as a vent opening and the expulsion of oil therethrough being prevented by means of the protecting disk 12. y

Referring, now, to Fig. 2 of the drawings, the parts 1',"2,3 tt, 5, 1l, l2, 13, 14, 15 and 16 are substantially the same in structure and mode of operation as the correspondingv parts shown in Fig. 1 and hereinbefore described. ln this modification, however, thc casing 17 has a portion 18 that projects below the base portion 17a and is tted upon, and preferably cemented to, a transformer terminal tube 19 of insulating material. The terminal 20 of the transformer 21 is provided with a tube 22 that projects through the insulating tube 19 and has ak screw-threaded connection with the lower end of the rod 5. By reason of this arrangement of parts, the insulating termina-l tube 19 may be made Vshorter than would otherwise be the case, since the voltage strains through the air are transferred largely to the porcelain casing 17 17a and 18.

The structural details of the apparatus may, of course, be varied from what we have specifically illustrated and described, provided the contemplated mode of operation,l and result are retained.

We claim as our invention: p

1. The combination with an insulating receptacle having a cover provided with a vent opening and a shield for said opening, and a body of insulating fluid contained in said receptacle, :of separable circuit terminals within the receptacle, and an inclosed fuse device connected between the terminals and adaptedy to be ruptured upon the passage of more than a predetermined amount of current.

2. The combination with a hollow insuthe cover of the insulator, an inclosed fuse device having terminal pieces connected to thel respective circuit terminals, a fusible conductor, an inclosing means therefor that is ruptured by fusing the conductor, andmeans for separating the terminals of the fusible conductor when its inclosing means is ruptured. j

4. The combination with a hollow insulatorhaving a cover and containing a body of insulating fi'uid, of circuit terminals that project respectively through the bottom and the cover of the insulator, an inclosed fuse device having terminal pieces connected to the respective circuit terminals, a fusible conductor, an inclosing means therefor that is ruptured by fusing the conductor, means for separating the terminals of the fuse when its inclosing means is ruptured, and means secured to the outer'end of the lower circuit terminal for supporting the insulator.

5. The combination with a hollow insulator having a cover and containing a body of insulating fluid, of circuit terminals that project respectively through the bottom and the cover of the insulator, an inclosed fuse device having terminal pieces connected' t0 the respective circuit terminals, Va fusible conductor, an inclosing means therefor that is ruptured by fusing the conductor, means for separating the terminals of the fuse when the inclosing means is ruptured, an insulating support for the insulator, land a conductor inclosed in said support and conesavev nected to the lower end of the lower circuit terminal.

'6, The combination with a hollow insulator having a cover and containing a body of insulating fluid, of circuit terminals that project respectively 'through the bottom and 55 therefor that supports lthe hollow insulator.

7. The combination with a hollow insulator having a cover provided with a vent opening and containing a body of insulating fluid, of circuit terminals that project respectively through the bottom and the cover of the insulator, an inclosed fuse device having terminal pieces connected to the respective circuit terminals, a fusible conductor, an

inclosing means therefor that is ruptured by fusing the conductor, and means for separating the terminals of the fuse when vits in closing means is ruptured.

8. NThe combination with a hollow insulator having a cover and containing a body of insulating fluid, of circuit terminals that project respectively through the bottom and the coverof the insulator, the upper terminal being tubular to provide a vent opening, an inclosed fuse device comprising terminal pieces connected to the respective circuit terminals, a fusible conductor, an inclosing means therefor that is ruptured by fusing the conductor, and means for separating the terminals of the fuse when its inclosing means is ruptured.

In testimony whereof, we have hereunto subscribed our names this 13th vday of September, 1906.

i BERTRAND P. ROWE.

` SAMUEL M. KINTNER. itnesses O'rro S. SCHAIRER, BIRNEY HINES.

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