US2039916A - Electrical receptacle - Google Patents

Description

May 5, 1936. w. F. MCINTOSH ELECTRICAL RECEPTACLE Filed Jan, 7, 1935 Patented May 5, 1936 UNlTED STATES PATENT OFFICE 2,039,916 ELECTRICAL BECEPTACLE William F. McIntosh, Charleston, Mass. Application January I, 1935, Serial No. 6'76 1 Claim. (Cl. 173-334) My present invention relates to receptacles and more particularly to electrical portable receptacles.

The principal object my invention is an improved electrical receptacle.

Another object is a portable electrical receptacle which is particularly adaptable for heavy duty work.

Another object is a portable electrical recep- 0 tacle having a multiplicity'oi plug outlets.

Other objects and novel features comprising the construction and operation of my invention will appear as the description of the same progresses.

In the drawing illustrating the preferred embodiment of my invention,

Fig. 1 is a side elevation of the receptacle.

Fig. 2 is a side elevation of the central portion of the receptacle with the near side removed.

Fig. 3 is a cross section taken on the line 3--3 oi Fig. l.

Fig. 4 is a side elevation taken at ninety degrees to Fig. 1.

Fig. 5 is a detailed perspective view of one the contact bar ends to which is connected an electrical cable wire.

Referring more in detail to my invention, I0 and il indicate two duplicate halves comprising the base of the receptacle. I2 and I3 indicate two duplicate halves comprising the insulated casing surrounding the receptacle inlets, solidly anchored in the base of Ill and II by means of a screw I I which passes through bosses I5. and I6 formed on the inner surface of basemembers I0 and I I- and seated in recesses I1 and I8 in the sides of the insulated members I2 and I3 respectively.

On the inner face of the casing I2 and I3 are grooves I9 and 20. One groove on each block is deeply recessed at 2| and the other block is recessed in the same manner as shown at 22 which is directly over the groove 20 in the member I2. These recesses are for the purpose of providing clearance for the end of the electrical contact bars 23 and 24 which have a raised portion 25 as 5 shown in Fig. 5, and are recessed out at 28* for the purpose of admitting a screw 21 as shown in Fig. 3.

The electrical cable 23 is connected by the electrical conductor wire 21 to the bars 23 and 24 as 50 follows; the ends oi the electrical wires 21 are entered through the opening 23 in the bars 23 or 24 and pushed around the cylindrical sides of the recess 23 and under the head of the contact screws 21, the opening 28 being located at one 55 side of the screw center more clearly indicated in Figs. 2 and 5. The cable openings in the base members In and I I are provided with annular rings 29, the inner periphery of which are considerably smaller in diameter than the normally rubber covered cable 26 and after the two halves 5 I0 and I I of the base member are firmly clamped together as shown in the drawing at Figs. 2 and 3, the annular rings become embedded in the rubber covering of the cable 26 such that it cannot be accidentally removed without releasing o the screws holding the base members together.

The outlet bars 23 and 24, one of which is shown in cross section in Fig. 3 comprises a strap body portion and a series of outlets disposed thereon oppositely. One half of the bar proper is em- 15 bedded in one of the grooves of the insulating block as at I9 or 20, and the top half being likewise embedded in similar corresponding grooves in the other half of the insulating block.

The outlet receptacles are indicated at 3|, the 20 construction of which is clearly shown in Fig. 3, there being provided slots 34 for the purpose of establishing spring contacts with the plug points of an electrical plug not shown.

The insulated members I2 and I3 are recessed 25 at 35 and 36 to provide openings in which the receptacle portions 3I are located together with the plug opening 36. The. bottom half of the casing I2 is further provided with a recess 31 and also a semi-recess 38 located in the suriace 30 I2 and I3 for the purpose of admitting a hooked member 39 which when assembled in the casing I3 as shown in Figs. 1, 3, and 4 becomes firmly embedded therein. The casings I2 and I3 are normally held together by means of screws 40 extending from side to side of the members I2 and I3.

While I have shown a particular application of my invention, it is to be understood that various modifications may be resorted to while still con- 40 tinuing to adhere to the original spirit 0! my invention.

Having thus described my invention, what I claim is:

An electrical plug receptacle comprising in combination, a symmetrical multiple electrical plug bar having a plurality of split bosses oppositely opposed to each other on either side of said bar, one end of said bar being provided with a hollow binding post boss, symmetrical casings enclosing said bar and being provided on their inner opposed sides with counterbored plug openings the counterbored portion being adapted tojreceive the said split bosses on said plug bar, symmetrical housings having locking bosses oppositely opcc posed on the inner sides thereof and adapted to with said plug bar, a recess located on the inside fit into counterbored recesses provided for the face of one of said casings, a hook member havpurpose on the outside and adjacent one end of ing one end bent at forty-five degreesi'or the said casings, a clamping screw adapted to pass pu p e 1 anchoring Said 11001! member n S d 5 through said locking bosses and casings for the recess in said casing. 5

purpose of binding said housing together about said casings and an electrical cable connecting WILLIAM F. McINTOSI-I.

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