DE359731C - Pulley for tensioning overhead lines etc. like - Google Patents

Description

GERMAN EMPIRE

ISSUED
ON SEPTEMBER 26, 1922

REICHSPAtENTAMT

PATENT LETTERING

- JYr 359731 CLASS 21c GROUP

(B 96084 VIIIl2

Ludwig Bünger in Essen, Ruhr. Pulley for tensioning overhead lines and the like. Patented in the German Empire on September 25, 1920.

When installing overhead lines, it is always necessary ^{to move the tension clamp (frog clamp) further forwards after the first move 1} in order to be able to effect the second move, often a repeated advance is necessary. In order to be able to advance and loosen the tension clamp, the tensioned wire must be temporarily held in its position. This is sometimes done by means of a

059781

loose tension clamp carried along especially for this purpose. In most cases however, if this is not at hand, the provisional fastening is then carried out by that you put the wire in a loop around the mast or insulator. This kind temporary fastening · requires great effort, especially with stronger pipes and a lot of time, the line is also damaged to a greater or lesser extent as a result.

The pulley block described below

is characterized by the fact that it is equipped with one or more terminals for provisional fastening of the lines to him is provided.

The drawing illustrates one embodiment such a perfected block and tackle in Fig., ι in · longitudinal section. Abib. Fig. 2 shows the clamping device in detail and Fig. 3 shows another embodiment of the device. Fig. 4 shows a special in association with idem pulley too using independent clamping device. So far, the pulley blocks for tensioning overhead lines, the middle one, the Bolts 1 carrying rope pulleys (Fig. 1), just like bolt 5, riveted laterally. In the Embodiment according to Fig. 1, this bolt is continuous on both sides! educated.

Two locks provided secure the bolt against rotation. The two pin journals are with slots 3 for receiving the wire to be tensioned, as well as with a Tension ring 2 and a screw wrench 4 each. After the wire is in a the slot 3 is placed, the key x 4 is pre-screwed, whereby! the .wire in the Pressed slot and a secure clamping of the wire, is effected.

In the embodiment according to Fig. 3 are instead of the slot and the clamping ring, two clamping jaws 6 and 7 and instead of the Wrench nuts 8 arranged. The jaw 6 is screwed onto the bolt 1 and the jaw 7 can be axially displaced on it. After the wire to be tensioned between the jaw is inserted, the clamping jaw 7 is screwed tight by the nut 8, whereby the attachment of the wire is achieved.

The clamping device as such can be attached in any manner and number.

For example, instead of on the bolt ι laterally · on the frame 9 of the Flasdienzuges be attached, etc. A multiple arrangement of the clamping device on 'the pulley has the advantage that the wires can be laid in such a way that two wires after tensioning in the clamping devices temporarily attached and the third tensioned by means of the pulley and is finally tied to the insulator, etc. Only one wire is temporarily attached to the pulley block! clamped so is also in In this case, the one-sided position of the clamp is not disadvantageous as this affects the pulley acting torque simply by 90 ° throws around so that the wire is in a vertical plane with the draw hook. In In this horizontal position, the pulley block is even more convenient to use than in the vertical position.

For tensioning the cables at any The stand-alone mast shown in Fig. 4 is used for long distances Clamping device, which is one-sided or «, like the pulley system, double-sided with Clamps of any type is provided and by means of the rod and the hook head can be attached to the intermediate mast. The long thread provided on the rod enables the wire to be re-tensioned if necessary.

Claims (3)

P ATENT DISCLAIMERS: ι. Pulley for tensioning overhead lines and the like., characterized in that he has a device which it allows one or more of the tensioned wires to be clamped to it. 2. An embodiment of the pulley block according to claim 1, characterized in that that 'the clamping device or clamping devices on one of the through bolts of the pulley system or at any point on its frame are. 3. Clamping device consisting of an attachable rod with clamping jaws for use with the pulley system according to claim 1 on intermediate masts. 1 sheet of drawings.