US1822693A

US1822693A - Terminal connection

Info

Publication number: US1822693A
Application number: US328510A
Authority: US
Inventors: Dibner Abraham Bernard
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-12-26
Filing date: 1928-12-26
Publication date: 1931-09-08
Anticipated expiration: 1948-09-08

Description

p 8, 1931- A. B. DIBNER 1,822,693

TERMINAL CONNECTION Filed Dec. 26, 1928 Arm am ammo DIME/z 1 NVENTOR ATTORNEY Patented 2 Sept. 8, 1931 v UNITED STATES ABRAHAM BERNARD DIBNER, OF PEEKSKILL, NEW YORK TERMINAL CONNECTION Application filed December 26, 1928. Serial No. 328,510.

This invention relates to electrical equipment and particularly terminal connections for copper cable used in what is known com-' mercially as a jumper loop tap from a high tension transmission line to connecting high tension apparatus.

In extra high tension electrical WOIl it 1s necessary to attach the transmission llne to a structure such as a sub-station or feeder line. This condition makes it necessary to lead a cable from the transmission line to such structure' The cable as a consequence is required to be maintained at a clearance distance from all other materials, and particul'arly those of ground potential. Itcan be readily seen that it is difficult for a flexible cable to be so maintained in the air for sweeps which often reach a magnitude of fifteen feet in radius. Numerous ways have already been devised for attaching the transmission line cable of this character to sub-station apparatus, but invariably the means employed involved the use of much special equipment, and in addition because of the free end of the transmission line ter- .minus, connection has been made diflicult, since this free end is subject to considerable vibratory and swaying movements With the foregoing clearly in mind, it is the purpose of the present invention to provide a jumper loop terminal, which consists in an arrangement of very simple parts, and which provides for the flexibility and surety required of this particular type of electrical connection. I accomplish this urpose by means of the device hereinafter escribed in detail, set forth in the appended claims and illustratively exemplified in the accompanying drawings, in which, Figure 1 isva side elevational view of a jumper loop tap utilizing my improved connecting unit; Figure 2 is a side elevational view of the tap; and Figure 3 is a bottom plan View of the same. Referring to the drawings, the terminal 10 or tap comprises two main parts, the terminal proper and the clearance sleeve 12', the former being in the form of a terminal, i. e., a bracing arm 11 disposed longitudinally of the sleeve 12 and provided with spaced v oppositely disposed pairs of lugs 13 which accommodate the ends of U-bolts 14, the closed ends thereof embracing the sleeve 12 and the threaded free ends projecting through openings in the lugs 13 to, receive nuts 15. The nuts 15, when tightened, tend to draw the U-bolts 14 against the arm 12 and bind it to the bracing arm 11. The sleeve 12 constitutes a tubular member of any required length suflicient to maintain the transmission cable 16 at suflicient clearance beyond any other apparatus. The inner end of the sleeve 12 abuts a socket 17 integral with the bracing arm 11 and provided with a recess 18 into which the terminal end of the cable 16, projecting through and beyond the sleeve 12, is inserted and permanently aflixed by means of solder, clamping or other means. The contacting part 19 of the terminal comprises a plate integral with the bracing arm 11 and projecting beyond the socket 17, the plate being provided with a plurality of openings 20 to receive clamping bolts. 21 and fasten the terminal to the high tension equipment or sub-station apparatus 22.

Installation of my improved jumper loop tap or terminal is accomplished as follows: The sleeve 12 is slipped over the terminal end of the transmission line cable 16, the end thereof being thereafter inserted into the bore 18 of the socket 17 and securely soldered or otherwise fastened. An electrical contact is then established between the substation apparatus 22 and the transmission cable 16. The sleeve or tube 12 and the'ad jacent portion of cable 16 are elevated into position against the bracing arm 11 and the U-bolts 14 adjusted and tightened by the nuts 15 to rigidly secure the tubular sleeve 12 and terminal proper 10 together.

It might be mentioned that in the illustration of my invention I have shown the sub-station apparatus 22 mounted upon an I-beam 23 and from the lower flange thereof projects the dead ending insulators 24 terminating in a strain clamp 25, the strain clamp 25 embracing a portion of the transmission line cable 16 at a point remote from the jumper tap 10. i

The installation according to the present invention has the advantage of requiring no special tool or other construction device, is extremely simple and has the ability to maintain complete and any predetermined clearance. The invention insures complete flexibility at the swaying end of the dead 4 ending string of insulators, coupled with the gradual rigidity at the terminal end of the transmission line, this condition being necessary to prevent crystallization, It also permits the continuance of the transmission line cable unbroken into the final terminal point. v

What I claim as new and desire to secure by Letters Patent is:

1. A terminal connection for electrical cable installations, comprising an integral member having a bracing, arm, a socket and a contacting portion beyond the socket, a clearance sleeve throughwhich the cable is disposed, the end of the cable being secured in said socket, and clamping means spaced apart on the bracing arm and adjustable to clamp over the sleeve to attach it .to the bracing arm.

2. A- terminal connection, as claimed in claim 1', in which the clamping means include U-shaped-bolts, the closed ends thereof'embracing the sleeve at spaced points and the free ends projecting through openings in the bracing arm, and means on the free ends of the bolts to adjust the latter against the sleeve.

3. A terminal connector for electrical cable installations, comprising an angular shaped member having one arm provided with oppositely projecting pairs of spaced lugs, a U-shaped bolt adjustable in each pair of lugs and disposed transversely of the arm,

a socket in the other arm having a recess below, and axially alined withthe first arm, a contact plate beyond the socket, and a sleeve projecting through and clamped in position by said U-bolts and abutting the socket to receive a cable therethrough, the end of the cable being. disposed in the recess of the socket and secured thereto.

In testimony whereof he has afiixed his signature.

ABRAHAM BERNARD DIBNER.