Patent GB-535665-A (GB)
Title: Improvements in or relating to a transfer or copying machine
IPC: B41L11/00
Filed: 1939-10-14
Abstract: 535,665. Copying documents. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 14, 1939, No. 27900. Convention date, Nov. 5, 1938. [Class 100 (ii)] [Also in Group III] In a machine for copying line by line matter from an original, having a mirror script image on its back, on to a copy sheet, the original, copy sheet and a moistening ribbon are brought closely adjacent to, but out of contact with, each other, are then momentarily pressed together along the line to be copied, and are then rapidly separated to prevent smudging of the copied line. The copy sheet 63, Fig. 11, is laid on the table 21, Fig. 2, of the machine with one edge against a guide bar on a reciprocable carriage 66 and is moved longitudinally until the line on which the copy is to be made registers with a guide line on an adjustable transparent register member 64. Upon starting the machine into operation, clamps 65 are first lowered to clamp the sheet against the carriage 66 and the chassis is then advanced to bring the selected line of the sheet under a presser bar 124. The original 153 passes over a guide 154, between a guide bar 155 and guide plate 156 and between feed rollers 137, 139. The rollers .139 are carried by pivoted arms 140 which may be lowered against spring action by finger-levers 164 to separate the rollers 137, 139 to allow of initial threading of the original. This movement of the arms 140 also lowers the guide plate 156 away from the guide bar 155 by the engagement of pins 166 on the arms 140 with the plate 156 which is fixed to a shaft 160 on which are pivotally mounted arms 159 carrying the bar 155. The initial positioning laterally and longitudinally of the original is facilitated by a pair of spaced and adjustable indicator fingers 51 and the levers 164 are then operated to cause the rollers 137, 139 and bar and plate 155, 156 to return to the position shown in Fig. 11. In this position the members 155, 156 are slightly spaced to allow feed movement of the original by the rollers 137, 139. The moistening ribbon 99 is held stretched between a pair of side arms 110 fixed to a shaft 111, and is normally held in contact with a moistening pad 103 by a pivoted cover plate 113. As the carriage 66 moves forward the cover 113 is raised and the shaft 111 rocked to bring the ribbon over into position beneath the presser 124 but still spaced from the original 153. When the presser bar 124 descends arms mounted thereon contact the upper edges of the arms 110 turning these arms farther downwardly so that projections on their lower edge contact the arms 159 and cause the bar 155 to grip the original against the plate 156 and lower this plate into contact with the table 21. In this position the copy 63, original 153 and ribbon 99 are brought closely adjacent to one another, actual contact being effected by the presser bar at the end of its downward movement. On the upward movement of the presser bar, the parts return to normal position, the clamps 65 are raised to release the copy sheet and a ratchet mechanism turns the roller 137 to advance the original one line space. The actuation of the clamps 65, carriage 66, cover plate 113, ribbon arms 110, presser bar 124 and feed roller 137 is effected in proper timed relation by cams on a shaft 38 actuated by a co-axial motor-driven shaft through a one-revolution ratchet clutch the movement of which is initiated by the depression of either of two levers 49, Fig. 2, one at each side of the table 21. Moistening device. The moistening ribbon 99 is normally pressed by the plate 113 against the pad 103 comprising an upper layer of pile fibre, intermediate layers of blotting paper and a lower layer of wick. The pad is supported on an inclined plate 104 and the wick layer contacts with a wick 105 in the bottom of the container 100. A liquid container 106 is mounted so that its exit pipe 107 contacts with the wick 105 which thus controls the flow of liquid from the container. In Fig. 11 the parts are shown turned through an angle from the actual inclined position which is shown in Fig. 2.