Patent GB-525819-A (GB)
Title: Improvements in mechanism for interpreting combinational code recordings, for instance of a punched record card
Filed: 1939-01-28
Abstract: 525,819. Typewriters &c. REMINGTON RAND, Inc. Jan. 28, 1939, No. 3046. Convention date, Feb. 15, 1938. [Class 100 (iv)] [Also in Group XIX] In mechanism for interpreting coded recordings, as in punched statistical cards, to set one or more members (differential type bars 86), a plurality of stops 85 for each member is settable under the control of code bars 67 to arrest said member differentially according to the coded record; and each stop 85 is settable to four active positions under control of three of said code bars, three positions being due to selective displacement of said three code bars in three combinations and the fourth position being due to auxiliary displacing means (pins and slots 156A -156F, 157) which are brought into action by a fourth combination of said three code bars 67. The invention is illustrated as applied to a record card-controlled tabulator in which cards pass from magazine 25, Fig. 1, to box 30 through a chamber 53 where they are halted and read by pins 57. Pins which rise through card-holes raise extension pins 59 and further pins 62 which through Bowden wires 63, raise upper pins 64 and corresponding code bars 67: The Figures show a section for reading one card column controlling adifferential rack 86 which carries type 122 and may operate totalizers 22. The full card column is cut into halves, each half functioning as a code column and operating the ends 70 of a set of six code bars 67. In each set the six code bars are one behind the other transversely of the column, Figs. 1 and 5, but are shown separated in Fig. 7 for clarity. For each full card column the two sets of code bars 67 coact with a vertical set of stops 85 having each two transverse lugs 89. Each lug is common to the adjacent set of code bars and stretches transversely across all six bars to coact with the notches shown in the edges of the bars 67. These lugs are represented by dot and dash lines in Fig. 7. Owing to the arrangement and size of notches and to the pins and slots 156A- 156F, 157, at any other time several stops of the vertically aligned set may move to the left and each may move one, two, three or four steps to coact with the four shoulders 870-873 on a plate 87 rigid with the rack 86. The appropriate stop 85 is, however, the lowest one moved and this one controls the plate 87. In this way four designations may be allotted to each stop 85, as shown in the code at the right of Fig. 7, and the amount of movement to the left is according to which of the four is represented in the corresponding half-column of the card, i.e., which bars have received full lift, and half-lift as set out below. The code bars are normally pressed downwards by spring-pressed pins 106. Each bar, e.g., the E bar, Fig. 7, has a pin 156E reaching into a slot 157 in the next lower bar D, the A pin 156A coacting with the F bar, through long slots 158 in the other bars. The length of each slot 157 is such that if a bar, e.g., D, is lifted by the pin 156E it is lifted half the amount it would rise if lifted directly by its upper pin 64. Each bar 67 has locking notches 160 and release notches 161. In each of groups Nos. 3-7, covering the numerals 0 ... 9, Fig. 7 (right), there is an invariable hole which is common to the four designations of the group so that each of the numerals (and the letters shown for these groups) is represented by not more than three holes. Group No. 8 uses the invariable hole in position F and groups Nos. 9-11 each use two invariable holes. Stop 85 in position 2 is used for erasure, whereby if the appropriate erase hole has been punched in a card column, that column is rendered ineffective. Stop No. 1 acts to prevent a bar 86 rising if the corresponding column is imperforate. One-step locking notches 171 in bars 67 permit this. In a modification, Figs. 10 and 11 (not shown), the code bars are notched to correspond to a numerical code already in use, so that this interpreting mechanism may be used with cards, sorters and punches already on the market. Specification 523,532 is referred to.