Patent GB-386968-A (GB)
Abstract: 386,968. Load-handling machines ; pulley-tackle, CAMERON MACHINE CO., 61, Poplar Street, Brooklyn, New York, U.S.A. July 16, 1931, No. 20441. Convention date, April 22. [Classes 78 (iii) and 78 (v).] Apparatus for delivering heavy rolls from winding machines of the kind in which the roll is wound by resting upon a winding drum, comprises means for moving the roll up over the crest of the drum while still in contact with the drum and then controlling its further downward movement beyond the crest of the drum on to a supporting surface at the other side thereof. In one form, Fig. 2, the roll 5 is removed from the winding drums 2, 3 by flexible members 8 which are connected by hooks 7 to the ends of the roll shaft 4 and which can be shortened or lengthened by means of chain-operated hoists 15 attached to rings 6 which are supported above and to one side of the drum 3 by flexible members 9, 11, 13. By operating the hoists 5, the roll 5 can be moved beyond the crest of the drum 3 while still in contact therewith and then on to skids 17 provided with a carriage 20 connected by a cable 22, Fig. 3, to a counterweight. The roll rests upon the carriage 20 and upon a flexible apron 21 carried thereby and frictionally engaging the skids to assist in the control of the downward movement of the roll. The skids 17 may be mounted on pivots 25 to enable them to be turned into a vertical and inoperative position, and are provided with holders 29 to receive a spare winding roll 30. In a modification the pivots 25 of the skids are carried by a horizontally slidable member to allow the skids to be turned into a horizontal and inoperative position. In another form, Fig. 11, the chains 43 carrying the hooks 46 are wound on sheaves 44 on a shaft 45 and pass round idlers 41, 42 on arms 38 mounted on pivots 39. The arms 38 normally rest against stops 40. When a roll is to be removed the hooks 46 are engaged with the shaft 47 and the shaft 45 is turned by suitable means such as toothed and chain gearing operated by a hand-wheel, to wind up the chains 43. The arms 38 are thus turned into engagement with stops 56 and the roll is moved on to the crest of the drum 3. The chains are then paid out to control the descent of the roll down the skids 57 while resting upon the carriage 63 and friction apron 64. In another form Fig. 15, the roll is thrust out of the machine by rigid arms 72 pivoted to the lower ends of arms 70 depending from a shaft 71. The arms 70 are provided with rollers 79 engaging cams 78 secured to a shaft 77 on which are also fixed sheaves 90 on which are wound chains 88 passing round guide rollers 91 on the pivots of the arms 72 and provided with hooks 89 for engaging the shaft of the roll. The shaft 77 may be turned in either direction by toothed and chain gear actuated by a hand-wheel 80. The arms 72 are normally in a vertical inoperative position but when a roll is to be removed they are turned into engagement with the roll shaft, the hooks 89 are also engaged with the shaft and the shaft 77 is then turned to cause the cams 78 to thrust the arms 72 forward to move the roll on to the crest of the drum 3. At the same time the chains 88 are unwound. Upon further movement of the shaft 77, the roll passes on to and down the skids 94 under the control of the chains. Fig. 21 shows a construction in which the roll ejecting means are associated with the means for raising and lowering the usual riding roller 98 resting upon the roll. The roller 98 is mounted in carriages 108 connected by chains 112 passing over sprocket wheels 113 to counterweights 115, and the carriages are caused to move in unison by pinions mounted on a shaft 110 and engaging racks on the frame. The carriages are raised or lowered by turning a hand-wheel 125 fixed to a sleeve which is loose upon a shaft 124 and operatively connected by a chain 120 to a shaft 118 geared to the shaft of one of the sprocket wheels 113. A pair of arms 128 hung on the shaft 110 are provided with idler sprockets 131, 132 over which pass chains 130 carrying hooks or rings 133 to engage the shaft of the roll, and wound on sheaves 134 on a shaft 135 which is connected by toothed and chain gear to the shaft 124 which is provided with a hand-wheel 143. By turning the wheel 143 first in one direction and then in the other the roll is lifted on to the crest of the winding drum 95 and then lowered down the skids 155 while under the control of the chains 130. In a modification (Figs. 27 and 28 not shown), the carriage comes against stops near the bottom of the skids, and the skids then turn about pivots to deliver the roll from the carriage to a truck or platform. In another construction, Fig. 29, the chains 171 pass over pulleys 170, 169, 168, mounted on fixed arms 167, to winding sheaves 172 operable in any suitable manner.