US1497420A - Ellctrical connecting and supporting plug - Google Patents

Description

.Fune 10, 1924.

E. C. WHITE ELECTRICAL CONNECTING AND SUPPORTING ILUG v Filed March 28.

' IIWE/VTOR ATTORNEYS latented dune 10, 1924. p I

STATES PATENT OFFICE.

memsr OANTELO WHITE, 01? NEW YORK, N. Y.,- ASSIGNOR TO ELECTRIC OUTLET COMPANY, INC., OF NEN' YORK, N. Y., A CORPORATION OF NEW YORK.

ELLCTRICAL CONNECTING AND SUPPORTING PLUG.

Application filed March 28, 1921. Serial No. 456,055.

To all whom it may concern: Figure 4 is a view in section taken on the Be it known that I, ERNnsT GAN'rELo plane indicated by the line 4-4 of Figure WHITE, a citizen of the United States, re 3 and looking in the direction of the arsiding in the borough of the Bronx of the rows, the outline of the intermediate insu- 5 city of New York, in the State of New lating ply being clearly shown. 55

York, have invented certain new and use- Figure 5 is a view in horizontal section ful Improvements in Electrical Connecting through the plug taken on the plane indiand Supporting Plugs. of which the folcated by the line 5-5 of Figure 3 and lowing is a specification, reference being had looking in the direction of the arrows.

t0 the accompanying drawing, forming a The body of the plug may be considered 60 part h eof. as a one-piece metal stamping a which in- In a copending application filed by the eludes at its upper edge a reduced section present applicant on March 5, 1920, Ser. a forming an upstanding lug. The plate No. 363,419, there is shown and described a in forming is reversely bent, terminating in some detail a suitable plug for use with in a channel piece (t at the back of the plug. 65 electrical connecting and supporting devices The web a between the front plate a and of the character claimed broadly in U. S. the back piece a is slotted. as at a to re- Patent No. 1,361,426, dated December 7, ceive the reduced lower edges of the insu- 1920. The present invention is concerned lating plies 7), c, d. In the preferred conwith a plug of the same general character, struction, there will be three such plies b. 70 but adapted for use under somewhat special 0, d, as illustrated, since this will afford circumstances and characterized by advanmaximum compactness and yet insure effectageous manufacturing details, such as simtive insulation against the metallic plates plicity of construction for assembling and a. (11?. Further, it enables the innermost ply disassembling, cheapness of cost and com- (Z to be inade in'very simple form as a one- 75 pactness. More particularly the invention piece sheet adapted to rest snugly against is concerned with an improved demountable the reverse face of the front plate a. In plug for use with wall brackets or sconces like manner the rearmost ply b may be having comparatively fiat back plates beformed of very simple shape but provided hind which, as is well known, remains very with apertures 7) through which pass the so limited space for electrical connecting and curved conducting and supporting members supporting devices. e of the plug. The intermediate ply c, which The invention wil1 be described with is shown in solid black in Figure 4, is so greater particularity with reference to the formed as to receive within openings therein accompanying drawing wherein is illusbearing flanges c with which the inner ends 85 trated, by way of example, a suitable emof the conducting members e may be bodiment. formed in accordance with certain improve- In the drawing: ments to be later described. Such openings Figure 1 is a view in side elevation of in the ply 0 will conform in general outline an improved plug in operative relation to to the inner flanges e and are indicated in the receptacle with which it cooperates, the the drawing by the reference character 0'. outline of the receptacle being indicated in The lead wires f from the fixture to be supdotted lines. ported may be carried into the improved Figure 2 is a view from the front and plug for protecting electrical connection in elevation of the improved plug. with the respective conducting members e,

Figure 3 is a view in vertical section through channels 0 provided in the interthrough the plug and showing particularly mediate ply a and extending from the respecthe relation of the insulation to the fixture tive openings 0' therein to the lower edge wires and the curved conducting and supthereof. porting member. By stamping and forming the front plate 1% a of the im roved plug with a rear channel section a, the insulating plies b, and d, no matter what their number or shape, may be readily slipped in place and held in pro er relation to one another and to the con ucting members 6 by the confining channel piece a. It will be understood that the conducting members e are assed through the respective openings b 1n the insulatin late I; and the fixture wires 7 connecte eectricall therewith before the insulating ply d is aid over the flanges e and the three plies then slipped into the channel section a in the manner suggested. In order to retain the parts against accidental dislodgment an angle piece 9 may be secured to the reverse face of the plate a as by means of a threaded stud h passing throu h the plate a and the angle piece. One angs of the angle piece 9 is adapted to engage the rearmost ply b and clamp all the parts in place. The other flange g of the angle fpiece 9 may be stamped in complementary orm to the lug a so as to coincide with it when the parts are assembled and afford a strong engaging hook for the fixture to be su ported. The upper edges of the lug a an the flange 9' may be beveled or otherwise formed for convenient engagement by the bridge of the fixture.

In addition to the features thus far described, particular attention is to' be invited to the conducting and supporting members e. As indicated hereinbefore, these curved members at their inner ends are stamped and formed with broad flanges e which may have substantial height and.

width and be generally channeled by opposed fianges e a bent up at the opposite side edges as shown most clearly in Figure 5. The fixture wires 7 may be led along the channels thus formed and have their bare ends passed through apertures e in the base of the curved members e proper before being reversely bent and twisted over upon themselves as most clearly indicated in Figure 4. The wiring connection secured in the manner described between the leads f and the conducting members e will be especially efiicient and at the same time the greatest possible protection is afforded to the wires through the channels in the flanges e and the overlying insulating plies b, d at opposite sides of intermediate plies 0 within whose confines the wires f rest. The mechanical strength afforded by the relation between the parts should be equally apparent. Compressive stresses alone are set up in the plug by the weight carried thereon and these compressive stresses are transmitted through the insulating plies to the broad flat flanges 6' bearing against the face of the outermost ply d.

- The detailed description given has been nae'neao devoted largely to manufacturing considerations in which cheapness, compactness and ease of assembling and disassembling are the outstanding characteristics. But aside from these advantageous features, it is to be emphasized that the improved plug will, in use, enter a field where compactness and simplicity are essentials. In cases where wall brackets or sconces having comparatively flat back plates are to be supported the space left behindthem for electrical connecting andv supportin devices is very limited. The improved p ug can be adapted to the smallest space now generally required for Wirin alone and no great space will be taken up by the wires f since they may be led straight out through the bottom of the plug. The manner of connecting and disconnecting the conducting arms a with the wires f of any particular fixture will be apparent to one unskilled in electrical practises. While the rewiring of plugs i1;

this art to diflerent brackets may not frequent occurrence, it is Well to have the construction so simple that all of the parts i may be readily removed or re laced. This is done in the plug described y removing the screw it and the angle piece 9 in a manner which is apparent from the foregoing description.

Rearrangements of parts and changes in form and dimensions are to be deemed within the spirit of the invention so long as the general objects are realized by means which fall within the scope of the appended claims.

I claim as my invention:

1. A plug for an electrical connecting and supporting device including curved conducting and supporting members, insulatin plies between which the inner ends of sai members extend, broad channeled flanges formed at the inner ends of said members to bear against the plies, and means to hold the plies in fixed relation to the members.

2. A plug for an electrical connecting and supporting device including curved conducting and supporting members, inner and outer insulating lies between which the inner ends of sai members extend, flanges formed at the inner ends of said members, an intermediate ply provided with recesses to receive said flanges and with openings to receive electrical wires for connection with said members, and means to hold the plies in fixed relation.

3. A plug for an electrical connecting and supporting device including curved conducting and supporting members and com rising a metal body stamped and reversely ent to form a channel, insulating means to carry the conducting and supporting members and a detachable flange secured to the metal body and opposed to said channel to confine the insu ation.

4. A plug for an electrical connecting and mounted in the channel and carrying the supporting device including conducting and conducting and supporting members, said supporting members and comprising a metal plies having their lower edges engaging the E body having a front wall formed with a slotted web of the channel.

5 hook and a reversely bent portion to form This specification signed this 25th day of a channel, the Web of the channel being March A. D. 1921. slotted and plies of insulating material ERNEST CANTELO WHITE.

Images