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Publication numberUS2198841 A
Publication typeGrant
Publication dateApr 30, 1940
Filing dateSep 11, 1939
Priority dateSep 11, 1939
Publication numberUS 2198841 A, US 2198841A, US-A-2198841, US2198841 A, US2198841A
InventorsPittman Ralph R, Walsh Carroll H
Original AssigneePittman Ralph R, Walsh Carroll H
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Conductor-tapping device
US 2198841 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Ap1 il30, 1940.

R. PITTMAN ET AL CONDUCTOR-TAPPING DEVICE Filed Sept. 11, 1959 INVENTORS Patented Apr, 30, 1940 N-ITEDSTATES PATENT OFFICE oonnooroa-mrrme nnvrolt RnPit tman and Carroll H. Walsh,P inc Bluff, Arkq Application September 11, 1939 Serial No. 294,300 r 6 Claims. c ne-F273) This invention relates generally to clamps adapted for electrically connecting a tap wire to an energizedconductor, such devices being often referred to as hot line clamps.

Among the objects of the present invention may be noted (1) the provision of means for attaching and electrically connecting a clamp to a conductor, together with means for connecting and disconnecting a tap wire respectively to and i from: the clamp, such an arrangement assuring that the conductor to which the clamp is attached will be unaffected by any arcing which may attend the connection or disconnection of the tap wire; (2) the provision of a clamp which is attached to the conductorthrough resilient engagement therewith, so that a weight which is rigidly attached to the conductor is avoided, for the purpose of preventing embrittlement of; l the conductor atthe point of attachment of the clamp;;(3) and the provision of means for initially) connecting the tap wire and subsequently disconnecting the tap wire in response toa predetermined downward movement of a contact member to which the tap wire is secured.

{ t These and other objects will appear as the description proceeds, and thescope of the invention will be set forth in the appended claims. In the drawing, Fig. 1 is a side elevational viewof theinvention; Fig. 2 is a front elevational view, shown partly insection. M

Referring in detail to the drawing, the con ductor-clamp I is preferably formed of a single piece" of; an inherently resilient conductor, such as a'bronze wire, or a steel wire covered by a i layerof copper. The clamp l0 consists broadly of two portions, an upper conductor-clamping portion, and a lower contact-engaging portion.

The upper conductor-clamping portion originates at the respective ends of the single wire forming the clamp, which are formed together by the copper sleeve 20. From the latter, the resilient wire extends upwardly in the form of the loops l2 and 26, above the conductor 25, to provide a coil which continually urges the portions l4 and 13 against the conductor 25, positioned therebetween, and in this manner the device is resiliently attached to the conductor to be tapped.

The loops. l2 and 26 also provide an eyeinto which a manipulating tool may be inserted, for the purpose of placing the clamp on the conductor bymeans of an insulated tool. V The, lower contact-engaging portion of the clamp ID is formed by two spaced portions of the wire which extend below the conductor 25 initially in spaced relation, the portions l5 and i6 the contact member H.

opening formed by the outwardly bent portions and it of thec1amp,for frictionally engaging the adjacent and opposed surfaces of the con- 15 tact-engaging portions l1 and H3, and for slidably moving downwardly between the latter portions to the, loop H], the latter being somewhat larger than the contactor 2| to permit easy release of the contact member from the clamp. The con- 0 tactmember is provided with a vertically BX- tending aperture for receiving atap wire 23, and a screw 24 threadedly engages an opening in registry with the tap wire opening, to mechan icaily and electrically connect the tap wire23 to 5 Amanipulating eye 22 is integrally formed with the contactor 2|, for

ease in handling the contact member and connected tap wire.

The procedurefor applying and utilizing the conductor-tapping device will normally consist in first setting the clamp II] on the conductor 25, by means of a suitable insulated tool in cooperation with the upper loops l2 and 26. The tool is then removed from the loops l2 and 26, inserted through the lower loop 19, and the clamp l0 pulled downward until it firmlygrips the conductor 25 between the portions l3 and 14. The clamp is now in position to receive the contact member- I l, to which the tap wire 23 has been previously attached. The insulated tool is now inserted through the eye 22, and the contactmember pulled downwardly through the opening formed by the outwardly bent portions l 5 and I6 andinto frictional and resilient engagement with the juxtaposed spaced portions l1 and I8. This is the normal connected position of the conductor-tapping device. Should it be desired to electrically disconnect the tap wire 23 from the conductor 25, the manipulating tool may again be inserted through the eye 22, and the contact member ll again pulled downwardly through the juxtaposed portions ll and I8, until the contactor 2| is released by passing into the opening of the loop H), from which it may be removed.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2519300 *Jun 25, 1945Aug 15, 1950Westinghouse Electric CorpCircuit interrupter
US2606949 *Apr 29, 1950Aug 12, 1952S & C Electric CoFuse guiding and mounting means
US5432690 *Dec 14, 1993Jul 11, 1995U.S. Philips CorporationLuminaire
U.S. Classification439/828
International ClassificationH01R11/14, H01R11/11
Cooperative ClassificationH01R11/14
European ClassificationH01R11/14