Patent GB-455331-A (GB)
Title: Improvements in or relating to recording apparatus for calculating machines
IPC: G06C11/08
Filed: 1936-01-02
Abstract: 455,331. Calculating- machines. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A. Jan. 2, 1936, No. 132. Convention date, Jan. 15, 1935. [Class 106 (i)] Recording apparatus for calculating-machines comprises register wheels 10, each for registering any of a plurality of digits, recording members (punches 106) associated with each wheel and less in number than the number of digits that can be registered by the wheel, an electric circuit operable under control of each wheel, and a selecting member 107, 94 controlled by each such circuit for selecting for actuation one or more of the recording members associated with its controlling register wheel, so as to record the digit registered by the wheel. The electrical means for entering the numbers into the wheels 10 may be of any known type. Each numeral wheel 10 is rigid with a switch disc 22 and a clutch member 21, and is loose on shaft 8 driven by motor 9. Slidably keyed on this shaft is a clutch member 11 for each member 21 which is normally urged to the left by a spring 14. At total-taking a magnet 20 is energized and rocks its armature lever 12 clockwise about pivot 13 so that members 11 and 21 engage and rotate the wheel 10. Each part 22 is insulated from shaft 8 and consists of two discs 24 and 25 of conducting material electrically connected together by rivets 26 and separated by an insulating disc 27. Brush 28 is always in contact with disc 24. Brush 29 contacts with disc 24 except at the " O " position, when it rests upon the insulating disc 27. Brush 30 rests upon the disc 27 except at the " 9 " position of wheel 10, when it rests upon a radial extension of the disc 25. Magnets 20 and discs 22 are connected to similar discs 60, 61 on a shaft 45. Each brush 30 is wired to a magnet 75 which, when energized, rocks its armature lever 79 anti-clockwise to move a bell-crank 97 clockwise about pivot 98, so that its lower end raises a rack 94 into mesh with a toothed sector 93 which is rotated clockwise at total-taking through wheel 91, rack 89, roller 90, cam 86, shaft 85 and a wheel 84 driven from shaft 45. The underside of selector bar 94 is cut away to rest normally upon a fixed common cross-bar 96. When a rack 94 is raised it is moved left bv sector 93 and its lower rim slides upon bar 96 so that it remains enmeshed with sector 93. On the return to the right a cam 104 on the rack 94 meets the inclined face of bar 96 and lowers the rack. The head 105 of bar 94 travels over the semicircular heads 116, Fig. 8, of four punches 106 and over the lower half of a circular head on a fifth, left-hand punch 106. A link 107 pivoted to the bar 94 has four lugs 136 ... 139 which coact only with the upper half of the circular head of the fifth punch. The pitch distance of the punches equals two steps. If member 94, 107 moves two, four, six, or eight steps to the left for the numerals 2,4, 6, or 8, the head 136, 137, 138, or 139 respectively, covers the head 116 of the left-hand punch and when the ram 126 is lowered, punches one of the lowest holes shown in Fig. 6. For the first and second steps, the head 105 coacts with the first semicircular punch head, so that " 1 " is represented by a single hole and " 2 " by two holes as shown in Fig. 7. If head 105 is moved three or four steps it coacts with the second semicircular punch head from the right and so on. When switch 52 is manually closed to zeroize the counter and punch the total in a statistical card, a magnet 50 closes a one revolution clutch 44 so that the shaft 45 is driven from motor 9 through shaft 41 and gears 40, and discs 60, 61 rotate. Brush 62 immediately connects earth 63 to brushes 28 and the circuit is continued through brushes 29, magnets 20, switch disc 61 and battery to earth 68. Magnets 20 close their clutches 11, 21 and rotate the numeral wheels 10 until they reach zero, when brushes 29 rest upon insulating discs 27 to break the circuits at various times according to the numbers accumulated. Also when clutch 44 is closed, sector 93 commences to rotate and disc 61 through brush 67 carries the circuit to magnets 75. Later as each wheel 10 reaches the " 9 " position, its brush 30 meets the radial extension of disc 25 in the switch 22 and the circuit of magnet 75 is completed to lift the corresponding rack 94 which is thereafter moved to the left for the remainder of the movement of sector 93. Subsequently a ram 126 is lowered by linkage 124, 129, 131 and a second cam 86 on shaft 85 to effect punching. Specification 345,324 is referred to.