US1993968A

US1993968A - Branch electrical cable connecter

Info

Publication number: US1993968A
Application number: US711897A
Authority: US
Inventors: Lee Marvin
Original assignee: Burndy Engineering Co Inc
Current assignee: FCI USA LLC
Priority date: 1934-02-19
Filing date: 1934-02-19
Publication date: 1935-03-12
Anticipated expiration: 1952-03-12

Description

March 12, 1935. LEE

BRANCH ELECTRIQAL CABLE CONNECTER Filed Feb. 19, 1934 ATTORNEY Patented Mar. 12, 1935 UNITED STATES PATENT OFFICE Marvin Lee, Brooklyn, N. Y., assignor to Burndy Engineering 00., Inc., New York, N. Y., a corporation of New York Application February 19, 1934, Serial No. 711,897

2 Claims.

The object of the present invention is to provide a plural-way connecter or cable terminal for connecting a branch cable to a main cable or feeder, which eliminates the necessity of con- 5 tracting sleeves or soldering, the construction being such that clamping of both cables is effected simultaneously by turning two nuts through the use of an ordinary wrench or pliers, irrespective of the relative diameters of the cables.

A characteristic of the invention is that the planes of operation of the nuts are parallel to the plane passing through the center line of the two cables, which greatly simplifies the clamping operation, particularly where the installation is required between closely spaced adjacent cables.

A further characteristic of the invention is that the device provides a very short and direct path for the flow of current from one conductor to the other, avoiding a multiplicity of parts for 20 the current to flow through. This is important in that where a multiplicity of parts are provided for the current to flow through, a marked decrease of efficiency results.

A further characteristic of the invention is that the greater the turning effort applied to the nuts, the greater the pressure between the two primary connecter elements.

Another advantage of the device described in this invention is the fact that the hole or socket 30 receiving the tap conductor is made considerably larger than the diameter of the tap conductor, so that even in cases where the tap conductor has not been carefully cut, allowing the strands to fray, it is a simple matter to insert the end of the tap cable into the receiving hole or socket. In other types of solderless T-connecters or cable taps, the corresponding hole has a diameter that is so close to the diameter of the tap conductor that it becomes a difiicult matter to slip the tap conductor into place when the ends of the strands are burred or frayed.

The invention will be described with reference to the accompanying drawing, in which:-

. Fig. 1 is a plan view of an embodiment of the invention applied to a feed cable.

Fig. 2 is a longitudinal section on the line 2--2, Fig. 1, looking in the direction of the arrows.

Fig. 3 is a transverse section on the line 33, Fig. 2.

Fig. 4 is a perspective view of the elements separated, showing in dotted lines a cable and tap conductor in position for application to the device.

Referring to the drawing, 1 indicates the main body portion of the device which is formed with a transversely extending arched saddle 1a: and a longitudinally extending saddle 19:01, the saddles providing contact faces, each adapted to extend longitudinally of a cable. Integral with saddle member 1am: is formed an overlying 'eye member 2 carrying threaded stem 3. At the opposite 5 end of body member 1 is disposed a second threaded stem 32:.

For co-operation with the main body member 1, there is provided a cap member 4 having a transversely extending arched clamping area 4.1: and a longitudinal extension 4m: formed with a chambered area at 5 adapted to receive the eye 2 of member 1, the chambered area also being apertured to receive threaded stem 3. A second aperture is formed in member 4 to receive threaded stem 39:- At opposite ends of chambered area 5, member 4 is provided with longitudinally extending arched clamping faces 6.

In use, the stripped area a of cable A is placed upon saddle 1x and the stripped end I) of the branch conductor B is slipped through eye member 2. Thereupon cap member 4 is placed in position, the threaded stems 3 and 3a: entering the appropriate apertures, and eye 2 being accommodated by the chambered area 5. Lockwashers 7 are placed on the stems and the nuts 8 are engaged with the threaded stems and turned down to force heavy pressure on member 40:, and in turn on the two cables. Thegreater the tuming effort applied to the nuts, the greater the pressure between the clamping elements and the conductors. It will be noted that the saddle-like faces 1a: and 1m merge into each other, providing a very short path for the flow of current from one conductor to the other. Furthermore, the device as a whole is of minimum area relatively to the relative sizes of the connected cables, enabling the adjacent cables to be closely spaced, the threaded stems and nuts being placed as they are in a plane passing through the center line of the two clamping faces and greatly simplifying the operation of making the tap connection. and enables uniform distribution of the clamping stresses.

Referring to the embodiment of the invention illustrated in the drawing, it will be noted that although thedevice affords relatively large contacting and clamping areas, it is exceedingly compact which facilitates taping of the device after it has been assembled and clamped in position upon a plurality of cables and/or taps. It will be understood that various modifications may be made in the form of the device illustrated in the drawing without departing from the spirit of the invention. For example, plural tap connecting members may be employed in lieu of the single tap connecting elements illustrated in the drawing and the saddle 1mm and eye 2 may be formed parallel with the saddle 12:, if desired.

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

1. An electric cable connecter comprising two cable engaging members each having a saddlelike contact face adapted to extend longitudinally of a cable, and a second saddle-like contact face extending angularly of the first-named face, one of said members having an eye intermediate the ends of said second saddle-like contact face, said eye having a projected stem, and said member also having a projected stem adjacent the first named saddle-like contact face, the second cable engaging member being formed with an internal chamber adapted to receive said eye and with spaced apertures through which the stems pass, the chamber being disposed centrally of the underlying contact face of said second member, the

stems being threaded to receive nuts by which the two members are moved together in clamping relation to two angularly extending cables received between them and abutting said contact faces.

2. In a device of the character described, a main body member having a cable-saddle and a cablesocket disposed at an angle to the saddle for making a branch connection for a tap cable, threaded stems integral with the body member, a clamping cap having a saddle similarly disposed to the saddle of the main body member and saddle sections held spaced by an arched portion of the clamping cap and thereby adapted to embrace the cable-socket and also openings adapted to receive the threaded stems in such manner that when suitable nuts are threaded down over the stems, pressure is applied against the cap, and, in turn, is transmitted through the cap to main and tap cables, thus pemiitting current to 20 flow from one conductor to the other.

MARVIN LEE.