Patent GB-319241-A (GB)
Title: Improvements in and relating to addressing machines and similar printing machines
IPC: B41L47/18
Filed: 1929-09-14
Abstract: 319,241. Adrema Maschinenbauges. Sept. 18, 1928, [Convention date]. Addressing and like machines; tripping-arrangements.-In an addressing or similar printing-machine comprising a rotatable platen head provided with two pads adapted to be moved alternatively into operative position and comprising also a listing-strip fed forward intermittently, the strip is moved longitudinally and transversely between the impressions printed with the two pads so that the two impressions are printed side by side on the list. As shown, the machine comprises an impression-arm 2 rocking about a pivot 3 and .forked at the end to receive a rotatable member 5 carrying platen pads 6, 7 arranged to print from different parts of a printing-plate 93. The forward end of a listing-strip 95 is gripped by a clamp 52 fixed by a bolt 51 to a slide 50 mounted on a guidebar 54 obliquely arranged on a saddle 49 mounted for transverse movement on a. base-plate 48 adapted to be advanced by means of a rack 46 engaging a pawl on the plate, the rack being reciprocated by a gear segment 44, which is rocked about a pivot 43 by means of an arm 41 having an adjustable connection with a rod 39 pivoted to an arm 38 adapted to be rocked about a fixed pivot 39<1> by a bell-crank 33 connected by a rod 32 to a crank 31 fixed on a sha.ft 13. The transverse movement of the saddle 49 is produced by a rod 40 also pivoted to the arm 38 and adjustably connected to an arm 42 fixed on the pivot 43, to which is also fixed a rod 68 which rotates through a universal connection a gear segment 64 engaging a pinion on a shaft 61 on which is slidably keyed a pinion 60 engaging a rack 59 on the saddle 49. The shaft 13 is intermittently rotated by a rack 20 engaging a pinion 19 loosely mounted on the shaft and carrying a pawl 17 engaging a notched disc 14 fixed on the shaft, the rack 20 being reciprocated by a bell-crank 22 pivoted at 24 to an extension 2<1> of the arm 2 and connected by a link 25 to a bar 26 slidably mounted in a block 27. A pin 29 is adapted to be moved into a notch hi the bar 26 by a bell-crank 84 connected by a rod 86 to an arm 89 on the pivot 3. Automatic selection mechanism (not described) comprises an electromagnet armature 89<1> moved into the path of the arm 89 whenever a printing-plate from which an impression is required is moved into printing position. Then, on the downward movement of the arm 2 to print, the pin 29 by engaging the notch in the bar 26 prevents movement of the bar so that, at the following upward movement of the arm 2, the bell-crank 22 is rocked, the rack 20 descends, the shaft 13 is rotated, the base-plate 48 is advanced to advance the strip 95, and the saddle 49 is moved sideways to position a different column of the strip under the impression head. At the same time, the slide 50 moves along the guide 54 so that the strip is moved back to its former longitudinal position. By varying the angle of the guide 54, the backward movement may exceed the forward movement where, for instance, the third line of the printing-plate is to be printed alongside the first line. The rotation of the shaft 13 also effects the rotation of the member 5 through a crank 12, rod 11, and arm 10 to move the pad 6 into operative position. When a printing-plate to be skipped arrives in printing position, the armature 89<1> does not lie in the path of the arm 89, which consequently turns with the pivot 3, and, during the downward movement of the arm 2, turns the bell-crank 84 and lifts the pin 85 out of the notch in the slide 26 so that the bell-crank 22 remains substantially stationary, and the strip is not advanced nor the head 5 rotated. The rotation of the bell-crank 84 is adapted through a, rod 80<1>, bell-crank 78, rod 77, and hand lever 76 to rock an arm 74 which has a forked end engaging a pin on an arm fixed to a cam 9 which is rotated and allows the pad to withdraw radially into an inoperative position so that no impression is printed. A similar cam 8 acting on the pad 6 is fixed to an arm carrying a pin which moves into the fork when the member 5 is rotated. A frame 105 connected to the clamp 52 engages under one edge of the strip 95. Specification 284,524 is referred to.