Patent GB-495083-A (GB)
Title: Improvements in or relating to printing machines
IPC: B41L47/58
Filed: 1937-05-07
Abstract: 495,083. Perforating sheets. ADDRESSOGRAPH-MULTIGRAPH CORPORATION. May 7, 1937, No. 13078. Convention date, May 8, 1936. [Class 31 (ii)] [Also in Group XVI] In an addressing or like series-printing machine impressions are printed directly on sheets from printing-characters on devices fed sequentially through the machine, and additional records are produced on the sheets by punching-mechanism indirectly under the control of control means on the devices. Addressplate holders D, Fig. 2, provided with rows of perforations over which is mounted a control card perforated to represent a number according to a code are fed from a magazine M by chains C to a detecting position and then to printing position beneath a platen P. The detector comprises a frame 145, Fig. 14, rocked about a pivot 146 by a rotary cam 154 acting through levers &c. 149, 150, 152. The frame carries sensing-pins 158 adapted to pass through the perforations in the control cards to engage contacts 165 under the address-plate guideway. The frame also carries a detector pin 166 carried by an arm 168, which is rocked about a pivot 169 whenever the pin encounters a tab T on the address-plate holder, and first closes contacts 171, 173 to set the punches and then contacts 175, 176 to operate the punches. Ten rows of punches, each row consisting of ten punches 40, Figs. 5 and 9, representing 1 .... 9 and zero, are mounted in a stationary block 41 arranged above a guideway G for the record sheets. A selector bar 58 is provided for each row and is positioned so that an enlargement 59 is situated above one of the 1 .... 9 punches, or so that an enlargement 60 is above the zero punch, or, for suppressing the zero, so that both enlargements are clear of the punches. The bars 58 are arranged between the punches and a plate 48 connected by rods 50 to a plate 49 periodically depressed against the action of springs 57 by a rocking lever 118 whereby the selected punches pass through the sheet S into a die-plate 45. The lever 118 is rocked about a pivot 119 by a cam 116 fixed on a shaft 96 rotated through a one revolution clutch controlled by an electromagnet 115 energized by a circuit controlled by the contacts 175, 176. Each bar 58 is connected to an arm 68 pivoted at 65 and integral with a segment 73 provided with teeth 74. A cam on the shaft 96 rocks an arm 69 whereby springs 71 urge all the arms 68 to the left, and pawls 79 are rocked towards the segments 73 to arrest the arms and therefore set the bars 58 after a variable angular movement of the segments. The pawls 79 are actuated by rods 124 pushed to the left by the plungers 123 of solenoids 122. The arm 69 carries a gear 91 engaging a rack 92 which moves to the right as the segments 73 are swinging counterclockwise, whereby contact bars 87 are wiped over sets of contacts 82 arranged in ten rows of ten, each row being associated with one of the solenoids 122, which are energized at a time depending on the particular contacts 82 effective and arrest the segments 73 correspondingly. The circuits include the sensing-pins 158 and the contacts 165. Five pins represent nine digits, the contact 165e representing 9 being associated with the others to represent odd numbers and closing the circuit to a solenoid 203 to move a plunger 204 to the left to shift a bar 205 whereby contact pins permanently engaging contacts 210 are changed over from engagement with the pin 212 of each of four pairs to the other pin 211 thus connecting up to one of the contacts 82 when one of the contacts 165a .... 165d is engaged and to an adjacent contact 82 when the contact 165e is engaged in addition. No perforations are provided in the control cards to represent zeros, and a zero perforation is punched in the record sheet when the zero is to the right of the first digit in the number but is suppressed when it is to the left. Each pawl 79 has an integral arm 190 engaging an arm 224 of a rocker 191, and a lug on the underside of each arm 224 extends under the arm of an adjacent rocker, such that actuation of a pawl 79 raises all the arms 224 to one side and opens contacts 185, 186 thus preventing energization of the solenoid 122 and allowing the corresponding segment 73 to swing to its fullest extent. In the case of zeros to be suppressed, the pawl 79 engages the last tooth in the segment. This causes the contacts 185, 186 to be separated, but this is compensated for by the movement of the plunger 123 which allows contacts 198, 199 to engage to close a separate circuit to maintain the energization of the solenoid.