Patent GB-190120363-A (GB)
Title: Improvements in Paper Feeding Devices.
Inventor: THOMPSON WILLIAM PHILLIPS
Filed: 1901-10-11
Granted: 1902-01-30
Abstract: 20,363. Thompson, W. P., [Loewenbach, H.]. Oct. 11. Feeding sheets.-The pile of sheets 2 is placed on a platform 1, which is gradually raised to keep the top of the pile at the proper level. At one end of the pile is a continuously - driven roller 3, which is lowered on to the top sheet and separates it, buckling it towards a bar 4 which is lowered on to the pile with the roller 3. When the end of the top sheet is separated, a presserfoot 5 is lowered en to the remainder of the pile, and a roller 6 at the other end of the pile is lowered to engage and feed the top sheet to a pair of feed-rollers 8, 9, by which it is fed on to the tapes 25. The roller 3 is driven by a train of gearing, and its supporting-arms 80, on the shaft 81, are rocked by a cam on the shaft 74. Rollers 95 on the arms 80 engage the arms 92 carrying the bar 4. The feet 5 are raised and lowered by a cam on the shaft 74. The roller 6 is in arms 58, pivoted at 59, and is driven by a train of gearing. The arms 58 are raised and lowered by an arm 56 engaging an adjustable piece 57 on the arm 58. The shaft 55 of the arm 56 is rocked by an arm 54, rod 53, lever 52, and cam 13 on the shaft 41. An extension 63 of the arm 56 operates an arm 64 by which the roller 9 is raised and lowered. The cams for raising and lowering the rollers 3, 6 are so formed that the rollers fall gradually, and not suddenly, on to the top sheet. The shaft 36 of the roller 8 is driven by a sprocket &c. gear, and the tapes 25 are driven therefrom by the gearing 161, 162, 163. The movement of the tapes is stopped, while they deliver the sheet to the printing or ruling &c. machine, by means of a clutch operated by the clutch lever 168 on a shaft 167 having an arm 166 engaging a cam 165. A guide-wing 21, normally in vertical position against the end of the pile, is shifted into an angular position to facilitate the feeding of the sheet. An arm 154 on the pivot shaft 155 of the wing 21 is pivoted to a rod 153 operated by a spring 156, and a lever and cam 152, 150. The upward feed of the table 1 is effected by screws operated by bevel gearing from a shaft 106 driven by a ratchet and pawl 105, 104, the pawl arm 103 being rocked by a crank-pin 102. The upward feed is sligbtly more rapid than is required by the removal or the sheets, and, when the top sheet comes into contact with a finger 30, the feed is temporarily stepped. The finger 30 is rocked by the removal of the top sheet, and operates through the arm 127, lever 128, rod 129, lever 130, and rod 131 to move a block 132 into the path of the tail 133 of the pawl 104. This engages a hook 136 with a catch 135 which holds the pawl out of engagement during its next forward movement. A stop 138 engages the tail 137 of the book, and releases the pawl at the end of the forward movement In order to adjust the machine for feeding sheets of different lengths, change gearing is provided to vary the speed of the required parts, and the bracket 175, carrying the roller 3, bar 4, and feet 5, &c., is adjustably mounted on rack-bars 176.