Patent GB-269868-A (GB)
Title: Apparatus for inserting markers in piles of sheets delivered by sheet cutting machines
IPC: B65H33/04
Filed: 1927-03-18
Abstract: 269,868. Spiess, G. April 24, 1926, [Convention date]. Cutting-apparatus; delivery apparatus.-In a machine for cutting sheets from a web and delivering them to a pile 10 with means for deflecting a sheet to a waste pile 11 if it is defective, apparatus is provided for inserting marker-strips in the main pile 10 after a given number of sheets have been deposited thereon comprising a spring 66 which is tensioned by counter-operating mechanism and released when the required number of sheets have been deposited on the pile 10, for the purpose of feeding the marking strip on to the pile. The sheets are cut by a knife, Fig. 1, operated from a shaft 5 through a cam 6 and levers 4 and pass to one or other of the piles 10, 11 according to the position of deflectors 9 connected by links 12, 13, 15 to a shaft 14 which is rotated by the operator of the machine, so as to deflect defective sheets to the pile 11. A link 20 connects an arm 21 on the shaft 14 to a bent lever 19 carrying a roller bearing on one end of a finger 17 pivoted to a bell-crank lever 18, so that when the shaft 14 is in its normal position for delivering sheets to the pile 10 the other end of the finger 17 projects into the path of a cam 16 on the shaft 5, and the lever 18 is rocked once in every revolution of the shaft. A vertically-slidable bar 23 carrying a horizontal plate 24 rests on the end of the lever 18 and is reciprocated by it. The movement of the plate actuates a counter 65 through a rod 25 and also rotates a toothed disc 29 freely mounted on a shaft 27 through a pawl 26 pivoted to a lever 28 and having at one end a roller resting on the plate 24. A second toothed disc 31 is keyed to the shaft 27 and is of slightly less diameter than the disc 29 so that its teeth are not engaged by the pawl 26 except when a deep tooth 67 on the disc 29 passes the pawl. The discs 29, 31 are held by detents 30, 32 respectively. As the disc 31 turns, a steel band 34 attached to one end of a spring-controlled bent-lever 35 is wound on a drum 33 keyed to the shaft 27, until a lever 47 on the shaft 27 is moved to disengage the detent 32 by the engagement of a pin 48 thereon with the end of a slot 49 in the disc 31, whereupon the spring 66 moves the lever 35, drum 33, and disc 31 in the reverse direction until a stop 50 on the disc 31 meets the pawl 26. The same movement actuates a link 36 so as to rotate an arm 38, Fig. 3, having pivoted thereto a pawl 39 engaging a ratchet-disc 40 secured to a roller 44 which together with a spring-pressed roller 45 feeds forward from a roll 43 and along a guide 46 a strip from which a knife 51 cuts the markers. The feed movement inserts the marker in the pile 10 but the action of the knife 51 is delayed until a number of sheets have collected on the pile 10 so that the marker is not displaced bv the sheets being delivered on the top of it. The knife 51 is actuated from the knife 1 cutting the sheets by an abutment 56 fixed to the knife beam 55 engaging a pin 58 on a lever 57 one end of which operates the knife 51. In order to prevent actuation of the knife 51 during the normal movements of the knife 1 the pin 58 is retracted by a spring, and is forced outwardly a short time after the feed movement has taken place by a pivoted arm 62 actuated by a bolt 61 moved outwardly by a lever 60 when the lower end is engaged by a pin 59 on the arm 38. A pivoted piece 63 on the arm 62 is controlled by a spring 64 so that it slips over and holds the lever 57 depressed until the pin 59 passes beyond the lever 60 whereupon the controlling springs bring the devices back to their original positions. When the shaft 14 is in position for deflecting a defective sheet to the pile 11, the finger 17 is out of the way of the cam 16 and no actuation of the counter 65 or the marker-feeding mechanism takes place.