Patent GB-694881-A (GB)
Title: Improvements in statistical card controlled machines
Inventor: BRAUN KARL JOHN
Filed: 1950-12-19
Abstract: 694,881. Typewriters &c. BURROUGHS ADDING MACHINE CO. Dec. 19, 1950, No. 30961/50. Class 100(iv) [Also in Group XIX] In a statistical machine in which actuating bars are operated in accordance with data on record cards, control bars, arranged transversely in spaced relation to the actuating bars to define junction points therebetween, are operatively connected thereto by a transfer unit movable into and out of operative association with the bars and including elements (e.g. movable pins) located at the junction points, the movement of the control bars controlling the setting of recording members. General arrangement. The tabulating machine described comprises a card analyzing section, Fig. 9, which controls actuating bars 32 34, Figs. 16 and 17, which operate type-bar-control bars 33, 35 through pins 30, 31 of two transfer units 28, 29 respectively in a printing section, Fig. 18, separated from the analyzing section by a wall 20. Group control mechanism and accumulators for totaltaking (not described in detail) may be incorporated Transfer units. Each unit 28, 29 comprises a frame, Fig. 3, which may be slidably removed from the machine on release of spring-urged locking plates 65 by finger pieces 68. The vertically movable pins 30 or 31 are held in rows and columns, each corresponding respectively to a column of a card, Fig. 2, and a type bar 27, by apertured plates, of which the top plate 59 may be removed when a new set-up of the pins is required. Card feed. Punched cards, Fig. 2, in a magazine 23, Fig. 9, are fed by a reciprocating picker 81 and continuously driven rollers 88 to a sensing chamber 89 where they are arrested by a stop 117 controlled through linkwork including bell-crank 119 by a cam on shaft 78 geared to main shaft 72, Fig. 18. After sensing, each card is discharged by rollers 90, 91 into a compartment 26. Sensing and analyzing mechanism; control of transfer units. While a card is stationary in chamber 89, Fig. 9, a pin box 101 is moved upwards by an eccentric (not shown) on shaft 78 and the pins 102 which sense card holes raise corresponding pins 110, and shorter pins 111 corresponding to the " X " control positions, Fig. 2, in a stationary box 107, which pins have projecting studs engaging slots 114, 115 in lock plates 113 whose rightward movement, urged by springs acting on bell-cranks 131, is controlled by a bail 132 connected by linkwork to cam-following bell-crank 138. Subsequently, a scanning frame 142 including pawls 141, one for each column of pins 110, 111, guided by a comb 149, is reciprocated horizontally by cam 155 acting on linkwork 158-160.. When a pawl reaches a raised pin 110 it rocks into engagement with and thus carries along a toothed slide 164, Fig. 16, so as to rock a lever 168 whose roller 172 normally engages a recess 173, thus moving the corresponding bar 32 to the left through bell-crank 175. If the pin 111 is the only one raised in a column, the form of the associated slot 115 allows a greater movement of the lock plate 113 so that the pawl 141 is again rocked by movement of the associated bellcrank 131, Fig. 9, to operate the bar 32 at such a time that an " O " is printed, Also, extensions 112 on pins 111 rock interposer levers 178 into position to operate bars 34, Fig. 17, for lower transfer unit 29, on the subsequent cam-controlled rocking of bail 180. Type bar control. As a bar 32, Fig. 16, is moved leftward at a time determined by the position of a raised pin 110, 111 it is also raised by surfaces 201 co-acting with fixed rods 200; and as a bar 33 is raised therewith through a transfer unit pin 30 it releases a spring-urged pawl 205 which then engages a tooth 206 to arrest the associated vertically moving type bar 27. Each bar 33 is connected to links 203 pivoted at 204 and having notches 208 which are engaged by pins on a spring- controlled restoring bar 210, Fig. 18. The bars 34, Fig. 17, similarly cause bars 35 to release pawls 218 at such a time as to prevent any upward movement of the type bars. This spring-urged upward movement is controlled by a bail 187 operated through linkwork by a cam 195 connected through toothed gearing to the main drive shaft 72. Printing mechanism. A spring-urged hammer 242, Fig. 18, for each type bar 27, is normally held by a latch 246 connected to a pivoted lever 247 which is moved to hammer-releasing position, after the bars 27 have been raised, by a pivoted bail 248 controlled through linkwork by a cam 251 on a shaft 229 connected through gearing (not shown) to the shaft 72. The hammers are restored by a bail 250 similarly controlled by a cam 255. To prevent the release of a hammer, the associated lever 247 is manually raised to an inoperative position and held by a spring latch 249. Example of operation. Fig. 2 shows an example of setting the transfer pins 30, 31 for associating fields A, B, C of the record cards with fields A<SP>1</SP>, B<SP>1</SP>, C<SP>1</SP> of printed sheet 54. Field A is transmitted always in the same manner so that pins 30 only are used. Field B is transmitted to one or both (see card 51) of two positions in field B<SP>1</SP> according to whether an " X " hole appears in column 8 or 11 (see cards 52 and 53) to operate the type-barinhibiting pins 31 (indicated by broken lines). Field C contains items in two distinct portions which are transmitted to common type bars through the pins 30.