LOCKING CASING FOR A WIRE PART

Abstract: Locking casing intended for locking a free wire part (7) to a stay wire (5), including a pipe-shaped casing (9), which is intended to be attached so that it surrounds as well the wire part (7) as the stay wire (5) and which is provided with a closable opening (10) which extends between its fully or partly open ends (11). The opening (10) extends along a generatrice parallel to the center line of the casing. The casing (9) preferably consists of a sheet-metal which, along one side of the opening (10), is provided with a fold (12) directed out from the casing (9) and which along the other side of the opening (10) is provided with an inward directed fold (13). One or several stop parts (14) are arranged so that they partly cover one half of the cross section at one end (11) of the casing (9).

Description: LOCKING CASING FOR A WIRE PART The present invention concerns a locking casing aimed for locking a free wire part to a stay wire, preferably a stay wire which constitutes a steel wire, but also other stay wires as for instance of solid steel. Posts for electrical cables, telephone cables and so on, masts for illumination and similar are usually kept in place by stay wires, preferably in form of hot zinc-li n ed steel wires, which extents from the top of the post respectively mast down to a foun¬ dation for respectively stay wire, to which respectively stay wire is fixed by using a stay screw including a U-shaped clamp, which is passed through for instance a ring-bolt at the foundation and the two shanks of which are furnished with screw threads. Bach shank is adapted in a hole in a bracket which is fixed with the clamp by a nut attached on each shank. The bracket is provided with a central aperture arranged between the holes for the shanks, through which as well the stay wire as the free wire part is passed through. Underneath the bracket, the wire is led around a socket key, whose front tip is placed in the aperture on the bracket. When loading the stay wire by pulling the nuts of the shank, the socket key depresses the stay wire as well as the free wire part in the aperture of the bracket. The free wire part is as a rule very rigid and tends to spring out from the pulled wire part and as a rule cutted with a hack saw,, by which its end has beco very sharp edges which can hurt as well wild animals as cattle which is pasturing by for example an electric line of force with a stay wire of this type. It has already been tried to reduce the risk for in- jurence on animals by tieing up the free wire part of the stay wire by help of zinc-lined steel wire, but thereby not effected any protection against the sharp end of the free wire part. It has also been tried to substitute the steel wire with a plastic tape, whereby this however have bursted after some time influence of sun light, weather and wind. It is of corse possible to tie up the free wire part with a steel wire an protect its end with a plastic tape, but this procedure is too timerecovering to be done. The purpose with the present invention is to produce a device which partly binds the free wire part to the stay wire and partly protects the free wire part against involuntary contact. The purpose has been reached by the present invention which con- sists of a locking casing which is characterized by a pipe-formed casing, which is to be arranged so as to surround as well the free wire part as the stay wire and which is provided with at least one closable opening that extends between its fully or partly open ends. The opening preferably extends along a generatrice that is parallel to the center line of the casing. The casing preferably consists of sheet-metal, especially of stainless steel or zinc-lined steel, which, along one side of the opening j is provided with a fold direc¬ ted out from the casing, and which, along the other side of the opening is provided with an in inward directed fold. One or seve- ral stop parts are arranged so that theyfully or partly cover one half of the crossection at one end of the casing to prevent the locking casing from sliding down against the stay screw and expo¬ sing the end of the free wire part. The locking casing is applied by threading it from the side over the stay wire and the free wire part through its opening along its length which is kept widen by the casings tending to spring outward at the opening. The wire part is pushed against the stay wire with one hand, while with the other hand, the locking casing is pulled down until its stop part is resting against the end of the wire part. After that, the locking casing is compressed so that the out-directed fold is brought in contact with the in- -directed fold. The wire part thereafter is let free while it springs out and causes a stretching load at the closed opening while the locking of the opening is increased. 3y not folding the stop part, several locking casings can be placed along the free wire part and further improve its connection to the stay line. In an alternative performance of the invention, the ca¬ sing is designed the way that it tends to spring inward at the ope¬ ning, while a locking is achieved without special arrangements. This performance does not admit that the free wire part springs out with a big force, while the casing can be opened by itself. In another alternative performance of the invention, the 'casing can be made of plastic in two halves which are connected to each other by help of locking parts and enclosing as well the stay wire as the free wire part. By the invention, an effective protection is achieved from hurting animals and also people by coming in unintentional contact with free wire parts on stay wires at their foundations. The invention has proved to be simpel to apply and is intended to have a long life. The invention is described below in respect of an embodiment and ' with reference to the attached figures. Figure 1 shews a stay screw with a stay wire whose free wire part is fixed by a lockning casing in accordance with the invention. Figure 2 shows the stay screw in accordance with fi- gure 1 in a view along " the line A-A in figure 1. Figure 3 shews the locking casing in accordance with figure 1 and 2 from one end. Figure 4 shows the locking casing in accordance with figure 3 from one end opened. Figure 5 and 6 shows alternative performances of the locking casing in accordance with the invention from one end. Figure ~ shows another alternative locking casing made of plastic from one end. Figure 8 shows the locking casing in accordance with figure 7 from one side. The stay screw in accordance with figure 1 and 2 in¬ cludes an TJ-shaped clamp 1 with two shanks 2 supplied with threads which extend from each of their ends and a bit against the bottom of the clamp 1. Each shank 2 is thread in a borehole in a bracket 3 which is attached to the clamp 1 by nuts 4 adapted on each of the shanks 2. The bracket 3 is supplied with a central aperture arranged between the boreholes for the shanks through which a stay wire ~ is passed throughwhich_, nderneath the bracket ~ } is led around a socket key 6, whose front tip is placed in the aperture on the bracket 3» and up through the aperture in a free wire part 7. When loading the stay wire by pulling the nuts 4 on the clamp 1, the socket key 6 depresses the stay wire 5 as well as the free wire part ~ in the OMPI aperture of the bracket. The free wire part ~ is attached to the stay wire 5 by a locking casing 8 in accordance with the invention, which surrounds as well the free wire part 7 as the stay wire ~ and protects the free wire part 7 against unintentional contact. The locking casing 8 consists of a pipe-formed casing 9, in accordance whith figure ~ and 4, which is provided with a closable opening 10 that extends between the ends 11 of the casing 9 along a generatrice that is parallel with the center line of the casing 9. The casing 9 consists of sheet-metal of stainless steel and is provided with a groove along its center line on each side so that two partly circular spaces are formed for the stay wire 5 and the free wire part ~, F ther or the casing 9 along one side of the opening 10, is provided with a fold 12 directed out from the casing 9 and along the other side of the opening 10 provided with a inward directed fold 13. A stop part 1 s arranged at one end of the casing 9 against which the end of the free wire part ~ is in¬ tended to support. The stop part consist of a folded sheet which is a part of the casing 9 and which is folded against the end 11 of the casing. The opening 10 is closed by compressing the casing so that the out-directed fold 12 is brought in contact with the in-directed fold 13» An alternative performance of the invention in accor¬ dance with figure ~ shows a casing 9 provided with two sheet-metal folds 14 which is a part of the casing 9 and wich has been folded against the end 11 of the casing. The casing 9 has two flat sides allowing the stay wire ~ and the free wire part ~ a relative angel inside the locking casing 8. In another alemative performance of the invention in accordance with figure 6, the casing 9 is so designed that it tends to spring inward at the opening. In that respect, the casing 9 s provided with folds 15 who are overlapping each other when the ope¬ ning is closed. In another alternative performance of the invention in accordance with figure 7 and 8, the casing 9 is made of plastic in two halves . One half of the casing 9 is in that respect provided with projecting taps 16 who secure the two halves together by push¬ ing in into corresponding holes in the other half of the casing 9. _QMPI < - iPo

Claims: PATENT CLAIMS 1. Locking casing intended for locking a free wire part (7) to a stay wire (5), including a pipe-shaped casing (9), which is intended to be attached so that it surrounds as well the wire part (7) as the stay wire (5) and which is provided with at least one closable opening (10 ), through which the casing (9) is threaded, which extends between the fully or partly open ends (11) of the casing (9) along a generatrice parallel to the centre line of the casing (9), c h a r a c t e r i s e d in that one side of the opening (10 ) is provided with a fold (12) directed out from the casing (9) and the other side of the opening (10 ) is provi¬ ded with a inward directed fold (13) and that the folds (12, 13) can be brought to hook each other by an elastic compressing of the casing (9) while the opening (10 ) is closed. 2. Locking casing in accordance with claim 1, c h a r a c t e r i s e d in that one or several stop parts (14) are arranged so that they partly cover one half of the cross sec¬ tion at one end (11) of the casing (9). 3. Locking casing in accordance with claim 1-2, c h a r a c t e r i s e d in that the wires (5, 7) consist of one or several strings of metal. BUREA OMPI - '

Inventors: OEHMAN ARNE, OEHMAN, ARNE
Applicants: OEHMAN ARNE, OEHMAN, ARNE
Application year: 1983
Main classification: F16G11
IPC codes: F16G11