US1165756A - Cable-terminal. - Google Patents

Description

F. B. COOK.

CABLE TERMINAL. APPLICATION FILED FEB. 25, 1910.

1,165,756. Patented De0.28,1915.

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UNITED STAT S PATENT OFFICE.

FRANK B. COOK, OF CHICAGO, ILLINOIS, ASSIGNOR TO FRANK B. COOK COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

CABLE-TERMINAL.

Specification of Letters Patent.

Patented Dec. 28,1915.

To all whom it may concern:

Be it known that I, FRANK I3. Coon, a citizen of the United States of America, residing at Chicago, in the county of (look and State of Illinois, have invented a new and. useful Cable-Terminal, of which the following is specification, reference being bad to the accompanying drawings, illustrating same.

My invention relates to terminal heads for electrical cables, such as are used for holding the wires of the cable in distributi n and protecting them from injurious electricity.

The principal objects of my invention are, to provide an improved cable terminal as will be hereinafter more fully described; to provide improved means for mounting the terminal head to a suitable base; and to provide dural ility, serviceability, simplicity, and cheapness of manufacture, in such cable terminals.

Other objects will be apparent from the following specification.

In the accompanying drawings illustrating the preferred form of my invention, Figure 1 is a side elevation of a cable terminal of the invention, with portions removed or broken away; Fig. 2 is a plan view of portions of the cable terminal shown in Fig. 1, with the terminal head shown in cross-section taken on plane cc-m of Fig. 1. Figs. 3, 4e, 5 and 6 are enlarged detailed views illustrating the means for attaching the individual protector units to the terminal head. Fig. I is taken on line a of Fig. 3, and Fig. 6 on line 6 of Fig. 5.

Like characters refer to like parts in the several figures.

In this invention the main portion of the terminal head is made of a single piece of porcelain, which provides a very rigid and substantial head, and at the same time simplifies the construction of such heads. Then again where porcelain terminal heads are used, it has been the custom to mount the head direct to the base portion of the whole so that the head supports the fanning strips and other portions and is therefore under considerable stress, but in this invention these stresses are taken away from the porcelain head because the latter is not mounted direct to the base portion of the terminal, as will be more fully hereinafter described. In

this manner the porcelain head is greatly protected from injury.

I will now describe my invention more in detail by reference to the drawings, in which 1 is a single piece of porcelain forming the top, bottom, and three sides of the terminal head, this piece of porcelain being substantially U-shaped in cross-section, as shown in Fig. 2. Series of hollow metallic terminal posts 2 2 extend through the side walls of the head 1, preferably as shown, these posts being preferably riveted over at their inner ends to rigidly hold them in place.

3 is the base plate for the cable terminal, and 4 41 are the fanning or distributing strips for the cable terminal, the strips 4 1 being mounted to the base 3 by bolts 5 5 arefcrably as shown, and carrying the porce lain head 1 therebetween by means of bolts 6 6 preferably as shown. On the front of the porcelain head 1 is placed a metallic cover or lid 7, the latter being mounted to the base 3 by bolts 8 S, and being removably secured to the head 1 by bolts 9 9, preferably as shown. The lid 7 may have a suitable gasket between it and the head 1 if desired, and the head 1 may also have a suitable gasket between it and the base plate 3, as at 10. The nozzle 11 for the cable, is secured to the base plate 3. Thus it will be seen that the head 1 is not mounted direct to the base 3 as is usually the case, but that it is carried by the portions 4 1 and 7 which are mounted to the base 3 as described. The outturned edges 12 12 of the metallic strips 1: a, and the front springy member 13 which is preferably carried by the base 3, serve as guides and supports for a cylindrical cover for the head, as well understood.

The terminal posts 2 2 are adapted to receive and hold individual protector units 14 on each side of the head 1, preferably as shown, the inner free ends of the springs 15 15 of each protector unit 1 1 being adapted to spring over and clamp the posts 2 2 as shown, and the rear end 17 of the metallic base plate of the protector unit being adapted to slide under and engage a tongue portion 16 formed out of the strip 4:- WVhen the protector units are mounted, the rear ends are slipped under the tongues and the springs 15 are then forced onto the posts In this manner the protector units is may be rigidly and readily mounted in place. Such a mounting electrically connects the springs 15 15 with the corresponding posts 2 2, and also electrically connects the me tallic base plate 17 of the protector unit 14., with the metallic strips 4 1 and base plate 3, to provide an earth connection for the lightning arresters 18 18 when the base plate 3 is grounded. The inclosed fuses 20 20 of course electrically connect the corresponding springs 15 15 with the corresponding springs 19 19, in a manner well understood.

The cable conductors leading to the cable terminal extend up through the nozzle 11 into the interior of the head 1, and then out through the respective hollow posts 2 2 to which they are preferably soldered. The aerial conductors leading to the cable terminal extend up through the opening 22 in the base plate 3, and then through the fanning strips 4c 4- and the hollow bushings 21 to the respective springs 19 19.

In the lower end of is a hole 23 through which the cable conductors extend from the nozzle 11 into the interior of the head 1. At the top of the porcelain head 1 is a hole 24 through which the head may be filled with an insulating compound if desired.

In connecting a cable with the terminal head, the cable conductors are all extended through the nozzle 11 into the head 1, and then are all distributed out through the respective posts 2 2 and soldered thereto, regardless of Whether or not the individual protector units 14 14 are attached to the head 1. After this When it is desired to connect up any of the cable conductors for service, the corresponding protector units 14 may be attached to the head as desired, as hereinbefore described. IVith this ar rangement there are no protectors supplied unlless they are to be put in service immediate y.

I desire it to be understood that when it is desired to have access to the interior of the head 1, the lid 7 may be removed by simply removing the bolts 9 9, and 8 8.

Of course I do not wish to limit this invention to all of the particular details herein Copies of this the porcelain head 1 2. A cable terminal comprising an integra-l head of insulating material, a removable lid secured to the front of said head, fanning strips secured to and supporting said head, and a base, the lower ends of said lid and said fanning strips being secured to said base, the weight of said head being sup ported by said fanning strips and lid.

3. A cable terminal comprising a head of insulating material, a fanning strip secured to each side of said head, protector units, tongues in said fanning strips engaging the rear ends of the protector units, terminal posts mounted in the sides of said head, said terminal posts alined vertically with each other, two of said posts being opposite each of said tongues, said posts engaging protector units.

A. A cable terminal comprising a head of insulating material, a fanning strip secured to each side of said head, tongues in said fanning strips, terminal posts mounted in said head, and individual protector units removably attached to said head and strips by said tongues and terminal posts.

5. In a cable terminal, the combination of a rigid base, a head of insulating material, and yieldable means mounted on said base and supporting said head, whereby the head will be non-rigidly connected to the base.

As inventor of the foregoing I hereunto subscribe my name, this 16th day of February, 1910.

FRANK B. COOK. Witnesses FREDERICK R. PARKER, MICHAEL J. STARK.

patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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