Patent GB-190310487-A (GB)
Title: Improvements in Apparatus for Delivering Sheets from Printing Machines, Printed Side Up.
Inventor: LOCK WILLIAM HENRY
Filed: 1903-05-08
Granted: 1904-03-10
Abstract: 10,487. Lock, W. H., and Hoyt, G. L. May 8. Delivery apparatus.-The sheets are delivered from printing- machines, printed side up. The carriage 5 consists of a pair of cheeks 16 held together by rods 18, 19 and having rollers 17 running on a pair of rails 4. The carrier tapes 20 are fast at one end to a clip 21 on a rod 22 supported by the carriage, and at the other to pulleys 23 on a shaft 24 turning in the machine frame 1. Helical springs on either end of the shaft 24 wind up the tapes as the carriage moves forwards. The delivery tapes 30 are fast at one end to a bar 31 carried by brackets 32 on a shaft 33 and at the other end to pulleys 34 on a shaft 35 carried by the cheeks 16. They are also wound up by springs on the shaft 35. Sheet stops 38 are attached to a rod 39 carried by the cheeks 16. The carrier tape rod 22 is carried by a pair of arms 40 pivoted on a shaft 41, so as to allow the fixed ends of the carried tapes 20 to be moved above or below the delivery tapes 30. The rods 22 carry rollers 50, which engage with cams 51, 52 on the rails 4 towards each end of the stroke, and raise or lower the tapes 20. A rod 43 is pivoted to each arm 40 and works loosely at the other end in a hole in a lug 45. A spring 47 on the rod 43 holds the arm 40 in either its upper or lower position. The lower position of the arm 40 is fixed by a lug 48 meeting a pin 49. When the printed sheet is ready to be taken from the feeding-tapes 25, the carriage 5 is in the forward position, both carrier and delivery tapes are wound up and the sheet stops are in contact with the front edge of the sheet. The fixed ends of the carrier tapes have been raised above the delivery tapes by the action of the cams 52 on the rollers 50. The tapes 20 carry on the sheet until the cams 51 force down the rollers 50 leaving the sheet on the delivery tapes 30. As the carriage moves forward, the tapes are wound up and the sheet falls on to the delivery table 6. In a modification, Figs. 7 and 8, the rod 22 is replaced by a bar 55 having at each end a stud 56 engaging a slot 57 in the carriage cheek 59. A pair of levers 60 turning on a rod 61 raise and lower the bar in the slots. Rollers 62 on the levers 60 engage with cams 8, as before, to raise and lower the bar 55. The cams, in this case, are fixed to the machine frame below the rollers. Sheet stops 66, carried by a shaft 67, are raised and lowered at the ends of the stroke by arms 69, 70 connecting them to the levers 60. The bar 55 is held in each position by a spring device, as before, acting on the swinging ends of the arms 69. To keep a constant tension on the carrier and delivery tapes, the winding-spring 29 of the tapes 20 is fixed to a tape pulley 71 loose on the shaft 24, and the spring 37 of the delivery tapes 30 is made fast to a spur-wheel 72 loose on the shaft 35 and engaging with a rack 73 on the underside of the rail 4. A tape 74 is fast to the pulley 71 and to a pulley 75, loose on the shaft 61 but fast to a spur-wheel 76 on the same shaft gearing with the spur-wheel 72. The length of the tape 74 is such that any difference in the tensions of the carrier and delivery tapes will be corrected by the winding-up spring.