US2309920A - Electric circuit service head - Google Patents

Description

Feb. 2, 1943. E, E PHILLIPS 2,309,920

ELECTRIC CIRCUIT SERVICE HEAD Filed Aug. 15, 1941 'INVEN TOR. EarZEIPh tZZ vpS Patented Feb. 2, 1943 UNITED STATES PATENT OFFICE ELECTRIC CIRCUIT SERVICE HEAD Earl E. Phillips, Schuylerville, N. Y.

Application August 15, 1941, Serial No. 407,048

1 Claim.

My invention relates to electric circuits, and has among its objects and advantages the provision of an improved service head for branching circuit wires from an entrance cable.

In the accompanying drawing:

Figure 1 is an elevational View of the service head and its supporting bracket;

Figure 2 is a transverse sectional view of the structure of Figure 1;

Figure 3 is an enlarged transverse sectional view;

Figure 4 is a plan View of the back section of the service head;

Figure 5 is a plan View of the top section of the service head;

Figure 6 is a sectional view taken along the line 6-6 of Figure 3;

Figure '7 is a sectional view along the line l l of Figure 5; and

Figure 8 is a sectional view along the line 8-8 of Figure 5.

In the embodiment selected for illustratlon, a service head l0 comprises a bottom section I2 and a top section l4. These sections are identical in external contour with the exception that the section I4 is provided with flanges l6 embracing end margins of the section l2. Both sections are of elliptical contour, when viewed according to Figures 4 and 5, in addition to being the same in size so that the flanges [6 have close fitting engagement with the end margins of the section l2.

The imier face of the section I2 is provided with a large cable or conduit receiving groove [8 which intersects one end of the section and is of a length slightly exceeding half the major axis of the section. Three smaller grooves are also provided in the inner face of the section I2, all of which smaller grooves have communication with the larger groove l8, but extending in the same general direction.

Section N is also provided with three diverging grooves 22 having the same arrangement and proportion as the grooves 20. All three grooves 22 combine at 24. Three grooves 26 are also ,provided in the section l4, which grooves are arranged in diverging relationship in the same manher as the grooves 22 and have common communication at 24.

In assembly, the groove face of the section !4 lies in engagement with the groove face of the section l2. In one position the grooves 22 lie in registration with the grooves 20 to provide openings 28 for the respective accommodation of wires 30 fanning from a conduit 32 extending into the groove 18. In cases Where relatively small wires corresponding to the wires 30 are employed, the section I4 is reversed to bring the grooves 26 into registration with the grooves 20.

To secure the sections 12 and I4 in assembled relationship, a metallic band 34 is used which en circles the two sections. Each section is recessed at 36 across its two side edges for the reception of the band 34, and the ends of the band overlap. One end is provided with an enlargement 38 provided with a threaded opening for a screw 40 extending through a slot 42 in the other end of the band. Thus the band is held firmly in position through mere tightening of the screw 40, and the flanges l6 act on the section l2 to hold the two sections l 2 and M in perfect registration. An opening 44 is provided in the band 34 for the reception of a screw 46 which may be threaded into a suitable supporting structure for mounting the service head. Figure 3 illustrates a recess 48 in the section I! for accommodating the head of the screw 46, which recess has communication with the channel 24 so that the screw is accessible when the section I4 is removed.

Figures 1 and 2 illustrate the service head ID in association with a bracket 50 provided with insulators 52 for respective reception of the wires 30, the latter being made secure by set screws 54. From the insulators 52 the wires 32 may extend to the terminals of the apparatus or appliance serviced by the head. In cases Where the bracket is employed, the screw 46 is removed and a short screw substituted therefor, with the nut 56 of the short screw 58 lying in a groove 60 in the bracket 50. The screw 58 extends through a slot 62 in the bracket 50 so that the service head l0 may be shifted to different positions on the bracket and made secure in the desired position through tightening of the screw 58.

Bracket 50 is recessed at 64 to lend easier accessibility to the nut 56. A plurality of openings 66 is formed in the bracket for the reception of screws to secure the bracket to a suitable supporting structure. Both sections l2 and M are formed of insulating material.

Without further elaboration, the foregoing will so fully illustrate my invention, that others may, by applying current knowledge, readily adapt the same for use under various conditions of service.

I claim:

An electric circuit service head comprising a first section having a conduit entrance and grooves, circuit wires branching from the conduit entrance and lying in said grooves, a second section overlying said first section and provided with and a fastening bolt extending through said band, the first section and said slot for connecting the parts into a unitary structure, said service head being adjustable on said bracket longitudinally 5 of said slot.

EARL E. PHILLIPS.

Images