Patent GB-404950-A (GB)
Title: Improvements in paper mechanisms for printing calculating machines or the like
IPC: G06C11/04
Filed: 1932-07-23
Abstract: 404,950. Typewriters &c. BURROUGHS ADDING MACHINE CO., 2nd Avenue, Detroit, Michigan, U.S.A.-(Assignees of Racz, E. ; 3709, Richton Street, Detroit, Michigan, U.S.A.) July 23, 1932, No. 20861. Convention date, July 25, 1931. [Class 100 (iv).] Sheet feeding and guiding arrangements ; line-spacing mechanism.-In apparatus for facilitating entering the amounts on waiters' slips and the like by means of a calculating or like machine, the slip is inserted horizontally and is then moved into the vertical position to display a section for one item to the operator while the amount is set on the keys. The apparatus may include a roller-platen which is rotated backwards and forwards to move successive sections of the slip into the displaying and printing positions. The apparatus shown in Figs. 1, 2, and 3 is mounted as a unit on a frame 20 which is attached to the casing of a Burroughs machine and replaces the paper and ribbon feeding-mechanisms described in Specification 263,097, [Class 100 (iv), Typewriters &c.]. A platen 30 is secured to a shaft 63 mounted in a platen frame comprising arms 31, 32 pivoted on a shaft 33 and connected to a spring 34 which, on release of a latch 41, raises the platen frame. The platen, when in printing position, co-operates with feed-rollers 38 and an apron 58 formed with a vertical front having openings 58a, 58b. A table 52, trunnioned at 50, 51 on the frame 20, is connected to the platen frame by a pin-and-slot 56, 55 so arranged that when the platen frame is raised, the table is moved from the vertical into an approximately horizontal position. The platen shaft 63 is provided with oppositely toothed ratchetwheels 60, 61 co-operating with pawls 65, 66 which are mounted on a rocking arm 73 and co-operate with a tripping-pin 78. During backwards and forwards movement of an operating-arm 77 for the arm 73, the pawls 65, 66 turn the platen backwards and forwards through spaces equal to the depth of a section on the slip, and twice that depth respectively. In operation, the latch 41 is released, the slip is placed face downwards on the table 52 and pushed rearwards into contact with a stop 59, and the platen frame is depressed, the slip being thereby bent around the platen and into contact with the apron. The item, for instance " salad," in the first section of the slip is then displayed through the opening 58a, and the operator sets up the corresponding amount on the keys. On operation of the machine, the platen rotates backwards to move the first section of the slip from displaying into invisible printing-position, the amount is printed by the type-bars 16 and ink ribbon 27, and the platen rotates forwards to bring the second section of the strip into viewing position. On the next operation, the second section is printed and the third section is brought into displaying position, and so on until all the amounts have been printed. The amounts are accumulated by totalizers 14, 15, and the total can be printed on the slip by depressing the total key T. To permit backwards movement of the slip when in initial position, the stop 59 is mounted on a rod 81 on the apron, and on depression of the platen frame is moved backwards, in opposition to a spring 84, by means of an arm 88 pivoted on the platen frame. An interlock is provided for preventing release of the latch 41 during operation of the machine, and preventing depression of the motor-bar 12 when the latch has been released. In the interlock shown in Figs. 1 and 3, a yoke 112 depressible by the motor-bar is provided with an arm 114 having a lug 115 arranged to obstruct the latch by moving into the path of a shoulder 116 thereon. On release of the motor-bar, the yoke is retained by co-operation of a lug 111a on the arm 114 with a shoulder 123 on a spring-urged bellcrank 120. The bell-crank is released by means of the key-latching plate 124. When the latch 41 is in released position, the shoulder 116 cooperates with the lug 115 to prevent depression of the motor-bar.