US1138074A - Connector. - Google Patents

Description

W. A. BUNNELL.

CONNECTOR.

APPLICATION FILED SEPT. 29, 1910v Patented May 4, 1915.

oLYi /Z gwvanfoz 2* V 9;) 01 um am M a n WILLIAM A, BONNELL, 0F BROOKLYN, NEW YORK.

CONNECTOR.

Specification of Letters Patent.

Patented May 4., 1915'.

Application filed September 29, 1910. Serial No. 584,554.

To all whom it may concern:

Be it known that I, WILLIAM A. BONNELL, a citizen of the United States, residing in the borough of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Connectors, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to improvements in connectors for electric conductors and are adapted for use in combination with such conductors and the outlet or junction boxes into which such conductors are led. To this end the connector is preferably cast in one piece of metal and is provided with a threaded neck or shank adapted to be intro duced through the wall of the junction box to which it may be secured by a suitable binding nut as shown more particularly in the drawings.

Referring to the accompanying drawings, Figure 1 is a plan view ofa junction box with eight outlets. the same looking upwardly. Fig. 3 an enlarged longitudinal cross section of one of the connectors. Fig. 4 an end view, and Fig. 5 a similar cross section showing the other side of the connector.

The outer end of the connector 15 is preferably provided with binding means such as the lips 6 and 7. The end of the conduit such as 8 is preferably introduced into the outer end 'of the connector after which it may be securely fastened therein by a binding screw, such as 9, the connector itself being securely fastened on inside of the box 12 by the binding nut 10 engaging the threaded neck or shank 11. The inside of the outer end of the connector is preferably provided with threads or ridges such as 13 and 14, the'threads or ridges on one side of the connector preferably being at an angle to the threads or ridges on the other side of the connector. These threads or ridges are preferably pitched at an angle to correspond with the pitch of windings of the usual Fig. 2 a side view of armored conduit so that which ever end of the conduit is inserted in the connector, one setof threads or ridges is sure to snugly engage and hold the same in position against withdrawal. If the conductor itself is inserted or a smooth surfaced conduit, the threads or ridges under pressure of the binding screw may be made to bite into the surface of and securely hold the same.

Of course it will be readily understood that various modifications may be made without departing from the spirit of the invention as set forth in the claim.

Having described my invention, what I claim as new, and desire to secure by Letters Patent is:

A connector for outlet boxes comprising a body portion having at one end means for detachably securing the connector to the box and having .adjacent said end an annular shoulder adapted to abut against the exterior wall of the boxto position said connector thereon, said shoulder also forming a shoulder within the connector adjacent the inner end thereof to form a stop for the armor when thrust into said connector, said connector having at its opposite end a pair of resilient clamping arms, each of said arms having a plurality of spiral ridges on its inner side of a pitch corresponding to the spiral armor of the conduit, said body portion between said shoulder and clamping arm, respectively, forming a pocket or socket for the free receptionof the end of the armor of the conduit, whereby the conduit may be gripped at a considerable distance from its inner end, and said ridges may firmlyengage the spiral grooves of said armor to aid the clamping effect ofsaid arms in holding the conduit securely in place:

'In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM A. BONNELL. Witnesses:

LOUISE 'ENDERLE, THOMAS A. HILL.

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