US1508666A - Electric box - Google Patents

Description

Sept. "1.6, 1-924.

E. NIEDERMAN ET AL ELECTRIC BOX Filed Auz. 9, 1920 WITNESSES Patented Sept. 16, 1924,

STATES,

estates PATENT orric EDWARD NIEDERMAN, OF NORWICH. CONNECTICUT. MORRIS J.KRI1\TSKY, OF NEW YORK," N. Y. I

ELECTRIC BOX.

Application filed August 9, 1920. Serial No. 402,155.

To 4Z7 whom it may concern:

Be it known that we, EDWARD NIEDERMAN and Mourns J. KmNsnv, both citizens of the United States, and residents, respectively, of Norwich, in the county of New London and State of Connecticut, and the city of New York, Woodhaven, borough of. Queens. in the county of Queens and State of New York, have invented a new and useful Electric Box, of which the following is a full, clear, and exact description.

This invention relates to electric distributing boxes, and has for an object to provide an improved construction wherein the elec tric cable is firmly clamped in position against accidental disengagement or loosening, and with the parts so arranged as to permit a quick and easy disengagement manually.

Another object of the invention is to pro vide a box with bodily removable sections whereby the electric cables may be fitted in the box laterally and then clamped rigidly against movement so that a comparatively short end may be readily used.

In the accompanying drawing:

Figure 1. is a plan view of an electric box disclosing an embodiment of the invention.

Figure 2 is an edge view of the structure shown in Figure 1.

Figure 3 is a sectional view through Fig ure 1 on line 3-3;

Figure 3 is a fragmentary sectional view through Figure 1 on line 3 3 Figure 4 is a fragmentary top view of a slightly modified form of box.

Figure 5 is a view similar to Figure 4, but disclosing a further modified form of box.

Figure 6 is an edge view of the structure shown in Figure 5. c

Figure 7 is a fragmentary view of box showing a further modified form to that illustrated in Figure 5.

Referring to the accompanying drawing by numerals, 1 indicates the outer rim of the box and 2 the body, said outer rim 1 being cut at a number of points for receiving the various locking plates 3, and the body 2 is notched at the same number of points as the rim 1 is out forming the sockets 4. The sockets 4 merge into square shoulders 5 against which the ends of the sections 3 press, or may press if the parts are drawn close enough together. Ordinarily however, the cable at when arranged in any of the sockets 4 causes the clamping plate 3 to be spaced a short distance'from the shoulder 5 and as the exterior" surface of the sections 3' are substantially shaped as a continuation of the rim. 1. a substantially round box is provided; It is, of course, evident that thebox could be hexagon shaped, square or other shape and the outer.. surface of the sections 3 made to conform -to the particular shaped'box used- In order that the sections 3 may be quicklyapplied and removed slots 6 and 7 are formed in each of the sections, each slot being associated with counter-sunk portions 8 and Q whereb the sections 3 may slide easily over thescrews 12 and 13 and the screws extend through the slots into the threaded apertures in body 2. By tightening up the screws 12 and 13 the section 3 is clamped firmly against the cable 4'." or against the shoulders 5 as the case may be. When it is desired to move any section 8 the respective screws 12 and I 13 in thatsection are loosened and the sec tion moved downwardly from the position shown in Figure 2 until the screw heads have been disengaged whereupon the section may be moved to any point desired and the cable 1" removed. This construction also permits the cable or conduit 4 to be bodily applied or removed from the side of the box whereby short ends of cables may be readily used instead of several feet as now practiced.

The interior shape of the box may be arranged as desired, but to produce an even thickness throughout a depression 14 is provided on one face of the box and a plurality of depressions 15 on the opposite side. As shown in Figure 3 a thickened tubular member 16 is provided which projects into the depression 15 for receiving retaining screws 17.

In operation when applying the box the various cables or conduits 4 may be ex tending loosely through the hole in which the box is to be placed and the box may be readily connected thereto and'also secured to the wall, ceiling or other support, as for instance in the manner indicated in dotted lines in Figure 3. v

In Figure 4 a slightly modified form of the invention is disclosed inwhich the socket 18 is arranged as part of a circle and the removable section as an arc-shaped contact surface 20' fo-rclamping the Wire or conductor in place.

In Figures 5 and 6 a further modified 5 form oft-he invention is shown in Which the removable section 21 is held pivotally in place by the screws 22 so as to be swung downwardly out of the Way or back into position. When arranged in proper position for clamping a Wire a. second screw 23 is provided arranged extending through the slot QfivherebyQthiS screw and also screw 221nay be tightened-"for properly clamping a Wire in fthe socket.

Figure Tlan'ojther fforln of socket is provide n'alnelysockelt 25 which is fornjied h f .fa cirflcleinerginginto a straight I" h ugh Which th-e wirei'nay pass. ampmg e't 'i'25 and ,is actuated ,by clampin sothat it willlpress tightly against 1J1 Anjele ctric box comprising a body forrndw'vijth, apluralit of notches in the periphery Jthereof, extending from the top to "the'bottom of t-hebody, said notches havher 271 is arranged in the 7 ing a V-shaped section merging into a substantially rectangular, enlarged section, a clamping plate formed With adapted to fit against the inner Walls of said rectangular section arranged inxeach notch, said clamping plate being adapted to clamp in said V-shaped section cables passing therethrough and screw means passing through said plates adjacent the shoulder section thereof for clamping the same in position in front of the notches.

2. An electric box, comprising a body formed with a plurality of notches in the periphery extending from the top to the bottom, each of said notches having cable receiving section and anouter clamping plate receiving section, a clamping plate adapted to .bepositioned in said clamping;

platereceiving section for "clamping a cable in said cable receiving section, ,and scre\r means extending through said clamping EDWARD NIEDERMAN. MORRIS J. KRINSKY.

shoulders t

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