Patent GB-522512-A (GB)
Title: Improvements in statistical machines
IPC: G06K19/04
Filed: 1938-11-07
Abstract: 522,512. Record-controlled statistical machines. REMINGTON RAND, Inc Nov. 7, 1938, No. 5327/40. Convention date, Nov. 13, 1937. Divided out of 523,532. [Class 106 (i)] In decoding mechanism for a record-controlled statistical machine in which differential members (type bars 176) are arrested by stops 225 controlled by code bars 232 less in number than the stops, the code bars are selectively moved a uniform amount according to code representations (holes) in the records, each stop responding to two code representations including in each instance a root (or common) combination which latter, by itself, allows a twostep advance to the stop and which when accompanied by a further hole allows only a one-step advance to the stop. The invention is illustrated applied to a pin-box machine in which the twelve-position card column is divided into two six-position code columns. For each code column the card reading raises one or more of six pins 254 which coact with a set of six code bars 232. These bars are of thin sheet metal and lie closely side by side, their lower ends 255 being offset to coact with the row of six pins 254. Each set of six code bars controls a vertical row of stops 225 which have lateral pins 257 entering the spaces 256 in the code bars and which vertical row controls a vertically rising type bar 176. This bar 176 also has rack teeth for controlling one denomination of an add and subtract totalizer as described in Specification 523,532. Rigid with the type bar 176 is a block 185 slidable on rods 177 and having a shoulder 226 and tooth 227 to coact with the stops 225. The teeth 239 and 229 coact only with two special zero and erasing stops 228, 230 respectively. The code bars 232 of a set are shown separated in Fig. 12, the pins 257 being repeated for clarity and the stops 225 being represented by dot and dash lines. The code bars have (1) two-step holes 2561 so that when a bar with such a hole is. raised, it permits the corresponding pin 257 and stop 225 to move two steps to the left to arrest the shoulder 226 of block 185, (2) locking holes 2562 so that a raised bar locks the corresponding pin 257, (3) one-step holes 2563 which, when a bar is raised permit the coacting pin 257 and stop 225 to move only one step to the left to arrest the tooth 227 of the block 185, and (4) "indifferent" holes 2564 which allow the coacting pin 257 to move one or two steps to the left whether the bar is raised or not. In the code shown at the left of Fig. 12 it will be noted that each stop 225 controls two type and in each pair the code representations contain one or more holes in common called the root combination ; e.g., for stop No. 1 printing " O " and " E," " O " is represented by an "A" hole and " E " by "A" and " C " holes, so that the "A" hole is the root combination. For stop No. 13, " D " and " E " holes are the root combination. The arrangement of holes in the code bars 232 is such that when a root combination is read the appropriate stop 225 moves two steps left to hold shoulder 226 and if another card hole is also present, the movement is restricted to one step to hold tooth 227 and print off the next type. For example, for an " A " hole in the card column, only the "A" bar 232 is raised and its two-step hole 2561 for No. 1 stop 225 permits the coacting pin 257 to move two steps to the left to print " O." The other bars 232 are not moved and their holes coacting with this pin 257 permit the latter to move freely. But if a " C " hole is also read, the " C " code bar is also raised and its half-step hole 2563 restricts the movement of the same pin 257 and stop 225 to one step to print " E." Raised code bars are subsequently returned downwards by the spring- pressed pins 272 shown at the top of Fig. 8. Stops 225 which have been moved left are restored to the right by a bar 277 which engages pins 276 on the stops and is operated by upper and lower links 280 from shafts 282. U.S.A. Specification 2,044,119 also is referred to.