Patent GB-190406971-A (GB)
Title: Improvements in Machines for Feeding Sheets of Paper or the like to various Machines.
Inventor: HADDAN HERBERT JOHN
Filed: 1904-03-22
Granted: 1904-04-28
Abstract: 6971. Haddan, H. J., [American Paper Feeder Co.]. March 22. Feeding sheets.-Relates to sheet-feeding machines in which the top sheets of the pile are fanned or feathered out by means of two combing- wheels thrown out of action independently when the corresponding side of the front edge of the sheet is advanced into proper position. (1) The action of the combing-wheels 2, 3, Fig. 2, is equalized by means of retarding-fingers 6, 7 on the clamps 4, 5, which retain the lower sheets as the top sheet is withdrawn after the combing-wheels have been thrown out of action by controlling- mechanism such as described in Specification No. 21,641, A.D. 1901. The fingers 6, 7 depend on opposite sides of the pile, and the clamps 4, 5 remain in engagement with the pile and are operated by pressure devices. The clamps are loosely mounted on sleeves 10, 11 on a rocking shaft 12, and pressure is applied by adjustable screws 14, 15 in yokes 8, 9 on the sleeves, which are under the action of springs 16, 17 and are rocked by means of a collar 18 on the shaft 12. This shaft is mounted in carriages 27 adjustable on rack bars 28 by means of pinions on a shaft 30, and is rocked by means of an arm 20 and a bar 21 mounted in arms 22 of a cam-actuated rocking shaft 23. A continuous contact between the sheet and the rolls 31, Fig. 5, of the combing-wheels is obtained by mounting the rolls in pivoted frames 32 held in normal position in a groove on the wheel by springs 33. (2) The pile table 1<a>, Figs. 7 and 8, is supported on a rod 37 and a shaft 38 in side frames 39 moved vertically at intervals by screw rods 41, and is adjusted laterally by means of racks 44, 45 and spring pawls 46, 47, either of which is operated by means of a handle 55 and arms 58, 54 connected by a link 59 pivoted on the arm 58 and having a pin- and-slot connection with the arm 54. The table 1<a> is guided laterally and adjusted backwards and forwards by means of racks 63 engaging long pinions on the shaft 38, which is turned by means of a handle 65 hung on the shaft and carrying a spring pawl for engagement with the adjacent pinion by pressing a thumb-lever. The advanced sheets are supported by front guides 68 on strips 69 loose on a transverse rod 70. (3) A means for pushing the sheets against the front gauges is shown in Fig. 11. The sheets are supported upon a stationary table 1<b>, and are arranged in a feathered bank which is gradually fed forward ; or the sheets are fed as shown in Figs. 2, 7, and 8. The top sheet is advanced to delivery rolls 71, 72, by which it is advanced over guide-bars 78 to supplemental delivery rolls 79, 80, which advance it to the front gauges 81. Fingers 86 push the sheet against the gauges 81. The rolls 72 are mounted in arms 73 on a rocking shaft 74 actuated by a cam 75 on a shaft 77. The rolls 80 are carried by bars 82 on a rocking shaft 83 actuated by a second cam on the shaft 77. The fingers 86 are adjustably secured to bars mounted on blocks 88, 89. The blocks 88 are provided with a cam surface resting upon a stationary rod 91. The blocks 89 are provided with yokes embracing a rod carried by arms 94 on a rocking shaft 95 actuated from a cam 96 on the shaft 77. The finger-bars lift the sheet from the bars 78. A side register device is shown in Fig. 17. The sheet is drawn on the table 101, Figs. 11 and 17, against a side gauge on a plate 103 adjustable in a slut in the table 101, by means of a gripper 107, 109 carried by a block 110 adjustable on a reciprocating bar 111. The part 107 consists of a rigid finger sliding in a groove in the plate 103. The part 109 consists of a roll on a lever 112 pivoted on a stud 113 and connected to a spiral spring adjusted by means of a collar notched to receive a pin on the stud 113. On the forward stroke, the lever 112 is held up by the engagement in a recess 119 of a roll 117 on a lever 118, which is tripped by an adjustable stop 121. On the rearward stroke, the lever 118 is swung forward by a fixed stop 122, and the roll 117 acts against an incline 123 on the lever 112, and re-engages in the recess 119. In the case of thin sheets, the jaw 107 is recessed to form a transverse bend in the edge of the sheet, and a buckling-plate is secured to the lever 112 behind the roll 109. For register at either side, two sets of grippers are provided on the bar 111, the set which is not in use being turned up out of the way.