US982563A - Terminal or lug for electrical conductors. - Google Patents

Description

C. R. BAIRD. TERMINAL 0R LUG FOR ELECTRICAL connucroas. I APPLIOATIDN IILIID MAB 19,1910. 982,563.

Patented Jan. 24, I 911 CHESTER R. BAIRD, OF NEW YORK, N. Y.

TERMINAL OR LUG FOR ELECTRICAL CONDUCTORS.

Specification of Letters Patent.

Patented J an. 24., 1911.

Application filed March 19, 1910. Serial No. 550,545.

To all whom it may concern:

lie it known that I, OlH'ISIER It. BAIRD, a citizen of the United States, residing in the city. county, and State of New York, with post-oiiicc address at. No. I LS) Broadway, have inventtal certain new and useful Iml'nfovt-nients in 'lerminals or Lugs for Electrical (.emluctors, 0t which the following is a specification.

This invention relates to terminals or lugs il ul' electrical conductors and especially to terminals :L'or stranded eom lnctors covered with asbestos or other insulation.

The invention has for its object the pro vision of, a terminal or lug which may be quickly and securely attached to an electrical (.(illtlllCtOl comprising a plurality of strands.

The invention also contemplates the pro vision of a tern'iinal or lug for conductors of the character mentioned which can be readily secured upon the conductor so as to ati'ord good electrical contact.

Other objects oi the invention will appear in the course oil the following description in which reference is had to the accompanying drawings.

in the (,lrawings Figure 1 is a view in longitudinal section through the terminal and a portion ot a stranded insulated con ductor to which the terminal is secured. Fig 2 is a top plan View of the terminal or lug and the adjacent portion of the conductor to which it is secured. Fig. 3 is 'a view part y inside elevation and partly in section showing a slightly modified form of terminal and the conductor to which it is secured. I

ltelln'ring to thc drawings by reference chzn'acters, l de ignates an electrical conductor consisting of a plurality of strands 2' and an insulating covering 3 0t asbestos or other material. The terminal lug conn'n'ises a main member -t and a clamping member 5. 'lhemain member provided with a socket to receive the end of the conductor and at [the inner end of the socket a conical boss 6 is provided. The outer portion of the socket is internally threaded :torengagement with the clamping member which is externally member is tubular in fOI'lYLflIlCl. of suitable bore to permit the passage of the stranded conductor when stripped-of itsinsulation. Near its outer end, the clamping member 5 is provided with an internal threadcution a taper and adapted to engage the insulation on the exterior of the conductor. The'm ain member of the lag is provided with a flattened extremity 7 with an eye for engagement with the binding post. It will be understood, however, that the form of the extremity may be altered for connection with other types of electrical connectors than binding posts without departing from the spirit of the present invention.

In the modified form of terminals shown in Fig. 3, I provide, in addition to the sethreaded to correspond. The clamping I curing devices shown in Fig. 1, a pointed screw 8 which extends through the outer portion of the clamping member 5 and engages the conductor, thus afi'ording more effective fastening for the insulation upon the conductor.

It will be noted on inspection of Figs. 2 and 3 that the two members of the terminal are both of octagonal form to facilitate the gripping oi the members with a wrench, but this .t'orm may be altered if desired.

In using the terminal, the insulation is stripped from the conductor to the extent shown in Fig. 1 and the bare strands of the conductor passed through the bore of the clamping member 5 which is then screwed onto the insulation as shown in Fig. 1 leaving the end of the conductor exposed at the forward end of the clamping memben The main member of the tern'iinal is then screwed onto the clamping member, thus forcing the boss (3 in the end ofthe conductor and spreading the ends of the strands against the sides of the socket in the main member and against the annular shoulder presented by the forward end of the clamping member. When the conductor is gripped in this way, it is practically impossible todetaeh the terminal without loosening the clamping member in the main member and satisfactory electrical contact of the conductor with the terminal is assured.

Having thus described my invention, What and also hailing a tapered I claim as new and desire to secure by-Letters Patent is:

A terminal or lug for electrical conductors comprising a main member having a boss at its, inner end and a tubular clamping member adapted to force the end of the conductor into clamping engagement with the boss and adjz cent portions of the main member internally 10 threaded chamber at its outer end for engagement with insulation on the conductor. In testimony whereof, I have signed my nsjune hereto in the presence of witnesses. CHESTER R. BAIRD. Witnesses Orro MUNK, SIDNEY SU'lI-IERLAND.

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