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Publication numberUS899639 A
Publication typeGrant
Publication dateSep 29, 1908
Filing dateJun 4, 1908
Priority dateJun 4, 1908
Publication numberUS 899639 A, US 899639A, US-A-899639, US899639 A, US899639A
InventorsWheeler H Vibber
Original AssigneeGillette Vibber Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Box-connector for electric installation.
US 899639 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)


Patented Sept. 29, 1908,

7/4 wwzQrQd ends 8 thereof.




No. scenes.

Specification of Letters Patent.

Patented Sept. 29, race.

To all whom it may concern:

Be it known that 1, WHEELER H. VIBBER, a citizen of the United States, residing at New London, in the county of New London and State of Connecticut, have invented a new and useful Improvement in Box(lonnectors for Electric installation; and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1 a view-in side elevation of my improved box-connector. Fig. 2 an end View thereof. Fig. 3 a detached view in longitudinal section of the bushing. Fig. 4: a detached view of the yielding binding-strap and binding-screw. Fig. 5 a detail view of the binding-strap as developed.

My invention relates to an improved boxconnector for use in electric installation, the object being to secure a superior grip upon a cab e or a conduit and to avoid crushing or deforming the latter in so doing.

With these ends in view my invention consists in the construction and combination of parts to be hereinafter described and pointed out in the claims.

in carrying out my invention as herein shown, I employ what for want of a better term i shall call a bushing 2 which is formed at what i may call its bushing-end, with a reduced externally threaded stem 3 provided with a binding nut 4, it being understood that the said stem 3 is passed through a suitable hole in the outlet-box or cabinet (not shown) after which the nut i will be applied to its projecting inner end for firmly seating the shoulder 5 at the base of the stem 3 upon the outer face of the said box or cabinet which may be of any construction. I The opposite, or what i shall call, the conduit-end of the bushing, is formed with a transverse slot 6 for the reception of a yielding binding-strap '7 oval in general form and having widened ends 8 formed with perforations 9 for the reception of a binding-screw 10 having a slotted head 11, the screw being furnished with a nut 12 interposed between the inner faces of the ends 8 and that portion 13 of the bushin 2 lying between the strap 7 and the widens Shoulders 1 1 formed between the strap proper and its widened ends engage with the outer face of the bushing near the ends of the slot 7, and prevent the -der 15 formed within the strap from turning far enou h to carry the screw 10 out of the rangeof the portion 13 of the bushing as described. An annular shoulbushing forms a contracted opening 16 for the wires which are thus centered in the bushing.

It will be understood that after an armored cable or a conduit is introduced into the conduit-end of the bushing, the screw 10 is operated to move the strap 7 in the slot 6 and therefore transversely to the axis of the bushing, whereby the. cable or conduit is gripped by the strap and drawn by the same against the art 13 of the bushing; VJhen the strap is t us put under tension by means of its bindingecrew 10, it not only draws the cable or conduit against the inner face of the part 13 of the bushing, but the strap itself tends to conform to the shape of the cable or conduit, and thus secures a firm grip thereupon. Furthermore, in case a fibrous conduit is used, the stra by yielding and conforming thereto, will dimly hold it without crushing it and deforming it, and s0 closing or contracting its interior space.

l/Vhile I have shown my improved yielding strap as applied to a straight box-connector, it may, if desired, be employed in conjunction with a box-connector of elbow form. I

1 claim 1. in a box-connector for use in electric installation, the combination with a bushing formed with a transverse slot, of a yielding binding-strap entering the said slot and furnished with a binding-screw which'engages with a bushing to function the strap.

2. in a box-connector for use in electric installation, the combination with a bushing provided with a threaded stem furnished with a nut and formed with a transverse slot, a yielding binding-strap entered into the said slot and having perforated ends wider than the bodyof the strap, and a binthng-screw passing .through the perforated ends of strap and carrying a nut which is interposed between the said bushing and the perforated ends of the strap.

in testimonyrwhereof, i have signed this specification in the presence of two subscribing witnesses. I

WHEELER ii. vrEEEn. Witnesses: M. B.- LEwis, N. d. Nnniiss.

Referenced by
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Cooperative ClassificationH02G3/0683