Patent GB-829382-A (GB)
Title: Improvements in addressing machines
IPC: B41L11/10
Filed: 1957-12-11
Abstract: 829,382. Adding machines. BRAUNSTAIN, J. A. Dec. 11, 1957 [Dec. 13, 1956], No. 38479/57. Classes 100(1) and 100(2) Copying documents. An addressing machine of the hectograhic type and in which the printing surfaces are carried by a band 48, the feeding device of which,is mounted on a tilting frame, is characterized in that the feeding of the copy sheets D into printing position is automatically actuated by the downward movement of the tilting frame. The tilting frame comprises two side members 18, 19 pivoted at 17 and connected by a transverse handle 21. Mounted between the members 18, 19 are two rolls 46, 47 upon which the band 48 is carried. The band 48 passes under an impression plate and over a pressing plate 53 having a window therein. When the handle 21 is depressed the impression plate presses the printing surface through the window in the plate 53 on to a copy sheet D which is supported on a rubber pad 52. The address band 48 is driven in known manner by two discs 49 which press against a cylinder 54 at points near the edges of the band 48. The copy sheets are fed into printing position by rollers 2, 3 the roller 2 being a dampening roller which is pivoted out of contact with a roller 3 when feeding is accomplished Feeding sheets. The frame members 18, 19, are integral with arms as 15, connected by a transverse rod 14. Between the arms 15 and in the path of the rod 14 is a lever 12, pivoted at 13 and one end of which is connected to a string 11 which is wrapped around, and secured to a shaft 10 on which the roller 3 is mounted by a conventional free wheel arrangement. When the frame members 18, 19 are depressed the rod 14 contacts the portion 12b of the lever 12 so that it rotates clockwise as seen in Fig. 5 and pulls the string 11 to rotate the shaft 10 and roll 3 in a direction to feed a copy sheet into printing position. The roller 3 co-operates with a moistening roller 2 carried between depending arms of levers 5, 6 pivoted at 7 (Fig. 2). The ends of the levers 5, 6 are connected by a bar 8 which co-operates with a portion 9a of a lever 9 pivoted at 23. A pin 26 on the arm 15 contacts a portion 9d of lever 9 when the copy sheet is in printing position and just before printing so as to rotate the bar 9 anti-clockwise as seen in Fig. 5 and then raise the roller 2. The lever 9 is held in this position, until the frame members are almost fully returned to the position shown, by a latch 25 pivoted to the arm 15 and connected by a biasing spring 25c to a portion 9c of the lever 9. After printing when the frame members are raised the shaft 10 is rotated anti-clockwise as seen in Fig. 2 by a string 20 connected thereto and wrapped therearound against the action of a tension spring, on the machine frame, to which the string is secured. The copy sheets are fed manually into the positionagainst the rollers 2, 3 and registered by means of a guide 45 adjustable transversely of the direction of feed for varying sizes of sheets The guide has a first part of L-shaped crosssection and a second part of U-shaped cross-section beginning adjacent the rollers 2, 3 and extending to and tapering towards the delivery side of the machine. Delivering sheets. The rod 14 also contacts a further lever 36 pivoted at 37 and connected to a string 35 on the shaft 34 of a delivery roller 32. The roller 32 is connected to shaft 34 by a pawl and ratchet mechanism so that it is free to rotate clockwise as seen in Fig. 2 with respect to the shaft. Clockwise rotation of the lever 36 (Fig. 5) by the rod 14 when the frame members 18, 19 are depressed causes the shaft 34 to rotate anti-clockwise as seen in Fig. 2 against the action of a spring on the machine frame connected to a string 38 which is wrapped around the shaft when it rotates anti-clockwise. Rotation of the roller 32 is prevented by a plate 41, normally held by rod 14 away from the roller 32 but which bears thereagainst when rod 14 is moved by depression of the members 18, 19. A co-operating roller 28 is provided on a pivoted arm 27 spring biased so that the roller is in contact with the roller 32, but normally held out of contact therewith by a projection 9e on the lever 9 which bears on the arm 27. When the lever 9 is rotated anti-clockwise by depression of the members 18, 19 the roller 28 is released so that it bears on the roller 32. After printing the members 18, 19 are raised but the lever 9 remains in its rotated position on account of the locking latch 25. Roller 32 remains held by the plate 41 until the rod 14 again makes contact therewith whereupon it is released to eject the printed sheet from the machine by virtue of the tensioned spring 28. At the end of the upward movement of the frame members 18, 19 the pin 26 contacts the latch 25 so as to release the lever 9 thus raising the roller 28 and again lowering the moistening roller.