Patent GB-365246-A (GB)
Title: Improvements in rope-hauling apparatus
IPC: B66D3/02
Filed: 1930-11-15
Abstract: 365,246. Apparatus for hauling ropes ; rope grips. FAURE, S., 58, Rue Victor- Hugo, Firminy, Loire, France. Nov. 15, 1930, No. 34463. Convention date, Dec. 26, 1929. [Classes 78 (ii) and 78 (iii).] Relates to rope hauling apparatus of the kind in which one automatic one-way clip is reciprocated by a hand-lever with respect to a second similar clip acting in the same direction, and consists. in providing reversing means which when set in action automatically hold each clip open when its motion relative to the rope is such that it would normally grip. Means are also provided for releasing both clips simultaneously so that the rope may be freely paid out, or threaded into the device. In normal operation the rope 5 is hauled through the retaining-clip 8 by the clip 17 which is 'reciprocated by the handle 20. The casing of the apparatus may be anchored to a fixed point by the hook 7. Each clip 8, 17 comprises a U-shaped jaw 15 embracing a jaw 11 shaped to conform to the rope. The jaw 11 is attached to the side plates of the clip by pairs of pivoted links, 9, 10 and the jaw 15 by links 12. The pivot 13 between the links 12 and jaw 15 slides in a slot in the jaw 11. Since the links 9 and 10, and 12 are not parallel the clip closes if the jaws rise and opens if they fall relative to the frames of the clips, thus producing a hauling effect. When the handle 20 is oscillated a spring 16 urges the jaws into the gripping position. A reversing plate 26 is frictionally held on the outside of the casing by nuts 37 and springs 36 acting on slots 40 and 41. The slot 31 is engaged by a cam 32 attached to a handle 34 which may be moved to the right (chain-line position) for reversal. An extension 30 on the moving pivot of the links 10 of the fixed clip passes through an opening 29 in the plate 26 while a pin 47 mounted on the frame of the moving clip slides in a slot in the casing of the apparatus along the line 28 and carries a lever 43 by frictional engagement with a slot 46 therein. The lever 43 also has an opening 44 to receive the moving pivot 45 of the upper links 9 of the moving clip. The lever 43 slides in a large rectangular slot 27 in the plate 26. During normal operation the parts are as shown in continuous lines while for paying out the reversing plate 26 is brought into action as shown in chain lines. In the latter case during the downward movement of the lever 20 the lower clip is held open since the opening 44 has lowered the pivot 45 relative to the pivot 47 and the frame of the moving clip. Towards the end of the stroke the lever 43 strikes an abutment 50 on the plate 26 and the pivot 47 slides in the slot 46, thereby separating the pivots 45 and 47 and closing the lower clip. Further movement of the lever 20 carries the reversing plate 26 downward thereby drawing the pivot 30 down and opening the upper clip. During the upstroke the cable is paid out. Towards the end of the stroke the plate 26 is carried back bv the plate 43 (the pivots 45 and 47 being kept separated by the pull on the rope) and reversal again takes place. To free the cable from both clips the handle 20 is raised to open the lower clip and the handle 34 is pushed down beyond the reversing position, thus depressing the plate 26 and the pivot 30 and opening the upper clip. The lever 20 may be pivoted at different points 21, 25 for different ratios, the abutment 50 being turned through 180‹ to correspond.