Buckles – buttons – clasps – etc. – Cord and rope holders
Patent
1983-06-14
1985-06-18
Kundrat, Andrew V.
Buckles, buttons, clasps, etc.
Cord and rope holders
403209, 174179, F16G 1112
Patent
active
045233551
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to elongate bodies, especially electric power supply cables, and is particularly concerned with providing a fitting for forming a joint between such a body and a support for example a supply cable insulator, adapted and intended for manual application to the cable in situ.
Hitherto, in many cases, electric power lines have been connected to supporting insulators by means of a generally U-shaped element which has its elongate arms twined about the cable to provide a loop fixed thereto, the loop thereafter being secured to the insulator by means of a shackle engaging the loop and a mounting post of the insulator.
This system, although it is an improvement over previous methods, has been found to be expensive as regards the cost of components.
By means of the present invention, a joint between a cable and an insulator may be made without the use of the shackle, and the resulting joint is at least as strong as the previously available joints. It is the object of the present invention, therefore, to provide a fitting capable of joining a cable to a mounting post of an insulator in a secure and inexpensive way.
According to the present invention, a fitting for connecting an elongate body to a support comprises a number of resilient strands twisted together in an open helical formation and formed into a U-shape having a central portion and two substantially parallel legs, and is characterized in that the central portion is given a greater degree of twist than the legs so that it has a rope-like appearance and is bent to form a pair of coaxial rings disposed one at either end of a midportion extending transversely of the fitting.
Preferably, the open helical configuration of the legs defines an internal cylindrical void of a diameter slightly less than that of the element to which the fitting is to be applied. The pitch length of the helix is such that the fitting may be applied without exceeding the elastic limit of the strands.
An embodiment of the present invention will now be described in contrast to a known cable fitting, with reference to the accompanying drawings, in which:
FIG. 1 shows the known cable fitting, in plan view;
FIGS. 2 and 3 illustrate the use of the known fitting;
FIGS. 4 and 5 show the fitting of the present invention;
FIG. 6 shows a retaining pin assembly used with the present fitting; and
FIG. 7 and 8 illustrate the use of the present fitting.
Referring to FIGS. 1 to 3, an existing cable fitting is shown which comprises a U-shape element 1 formed of three strands of wire 2, 3, 4, the three strands being twisted together in an open helical formation and then bent to form a U-shape. The strands are held together by a coating of varnish or lacquer or the like.
In use, the two legs 5 and 6 of the fitting are twisted round a cable 9, so as to wrap round the cable without overlapping. The curved part 7 of the fitting then forms a loop 8 attached to the cable 9 by means of the legs 5 and 6, as seen in FIG. 2.
A shackle 10 is then used to connect the loop 8 with a mounting post 11 of an insulator 12, the insulator being situated atop a supply pole or pylon.
The fitting of the present invention, as seen in FIGS. 4 and 5, is similar in appearance to the prior device, but has two important differences which significantly improve its operability and economy.
As can be seen, the fitting is generally U-shaped and has two elongated legs 13 and 14, joined by a transversly extending midportion 15.
The fitting is formed from three twisted wire strands 2a, 3a and 4a, and doubled to form the U-shape. Before doubling, however, the central part of the fitting is twisted further, so that the fitting has a central part 16 including the midportion 15 in which the three strands are tightly twisted, like a wire rope, and two extremities 17 in which the wire strands are in the form of a open helix. It is important also to note that the two helices are out of phase axially by half of their pitch when the fitting is in its doubled condition.
The second important difference is that, adjacen
REFERENCES:
patent: 3042745 (1962-07-01), Williams
patent: 3151437 (1964-10-01), Schlein
patent: 3406513 (1968-10-01), Butz et al.
patent: 3588316 (1971-06-01), Peterson
Kundrat Andrew V.
Preformed Line Products Company
LandOfFree
Fitting for joining an elongate body to a support does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fitting for joining an elongate body to a support, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fitting for joining an elongate body to a support will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-974241