Patent GB-469028-A (GB)
Abstract: 469,028. Calculating - apparatus. THOMAS,A. Jan. 16, 1936, No. 1457. [Class 106 (i)] Multiplying-apparatus to deal with multiplicands in decimal, sterling or other notation, comprises an adding machine which repeatedly adds the multiplicand a number of times equal to the single or multi-digit multiplier when it is stopped automatically. The multiplicand may be set up by the normal keyboard of the adding machine and the multiplier by a separate keyboard in an adding cycle control device. Alternatively, both factors may be set up from perforations in a record card. The invention is described as applied to a key controlled punching machine for perforating record cards, e.g. as described in Specification 328,255, [Class 31 (ii)]; in which a single key bank is used to set up digit-by-digit punch bars in the punching machine corresponding to the multiplicand and then the multiplier, these two factors being entered simultaneously, with the setting of the punching machine, in a key set power operated adding machine, e.g. a Sundstrand machine, and in the adding cycle control device, comprising a unit counting device as described in Specification 434,722, [Group VIII], respectively, by means of Bowden cables. A control key on the punch machine keyboard is then operated to effect repeated addition of the multiplicand (the repeat key being permanently depressed) until stopped by the control device when a one revolution clutch causes by means of cams, depression of the correction, total and motor keys in the adding machine to effect printing of the product. This product is set up by the operator on the punching machine and the punch key depressed, to punch simultaneously on the record card the multiplicand, multiplier and product after which the punch machine is restored to normal and the cycle control device zeroized manually. Entering the multiplicand. The punch keyboard, of the type shown in Specification 350,518, comprises a single bank of keys 63, Fig. 6. Depression of any key 63 rocks a slide 64 through a bell-crank 65 until a lug 67 on the slide registers with a notch 68 in a corresponding lever 69 which rises under spring action until an eccentrically mounted wheel 70 thereon meshes with a constantly rotating wheel 71, whereby the lever 69 is depressed and actuates the corresponding punch bar in the punching machine through a Bowden cable 72. A link 73 pivoted to the lever 69 is also depressed. The link is pivoted at 75 to a lever 74 which rests on and rocks about a temporarily fixed pin 78. The other end of link 74 is pivoted at 74a to a lever 80, the other end of which rests upon a shaft 81 about which a lever 82 is pivoted. Lever 82 is actuated through a pin- and-slot connection 83, 84 by lever 80, and its free end 85 depresses a bar 87 through a pin 86 against the action of a spring 89 to set the corresponding stop in the adding machine through a Bowden cable 90. The multiplicand is thus set up digit-by-digit on the adding machine by depressing the appropriate keys 63 which through their respective bars 87 actuate the corresponding cables 90. Entering the multiplier. When the multiplicand has been thus set up a roller 104 on the travelling carriage 105 of the punching machine moves from under a cam bar 123, permitting a spring 124 to rock the cam bar counterclockwise through link 118, bell-crank 119 and links 120, 121 and to pull a bail 94 pivoted at 96 out of latching engagement with the bars 79, and to pull a bail 95 pivoted at 97 into engagement with recesses 99 to lock all the bars 87. Consequently, on the next depression of a key 63, the depression of link 73 rocks the lever 74 about the fulcrum 74a (now fixed as the corresponding bar 87 is locked) and depresses against the action of a spring 88, the corresponding bar 79 which through a Bowden cable 24 sets the corresponding digital stop pin 17, Fig. 1, in the adding cycle control device. Since the apparatus caters for a multiplier of three denominations only, three rows of stop pins 17 are provided, Fig. 2, and setting is effected through a single row of pins 21 mounted on a sliding carriage 19. Thus, as the key 63, Fig. 6, corresponding to the first digit of the multiplier is depressed, the corresponding Bowden cable 24 rocks its arm 23, Fig. 2, to depress the corresponding pin 17, through a pin 21, the depressed pin 17 being locked by a slide 17a, Fig. 1. The actuated arm 23 is returned to normal by a spring-biassed bail 26, as the escapement 20 permits the carriage 19 to be advanced one step by springs 19a so that the next two successively depressed keys 63 set stop pins 17 in the two lower denominational rows thereof. Multiplication. Depression of the control key on the punching machine keyboard rocks through a Bowden cable 47, Fig. 1, a pivotal lever 48, which is held in its operated position by a latch 50 pivoted thereto engaging over a pin 51, and through a Bowden cable 49 depresses the motor key of the adding machine, whereupon the multiplicand is added repeatedly. At each revolution of the main shaft of the adding machine, an arm 55 oscillated thereby advances through a resilient connection 57a, link 57 and pawl 45, the units wheel 44 of a counter 139 as described in Specification 434,722. As each denominational wheel of the counter is stepped, a corresponding rack 39 is advanced, the rack being quickly retracted to the zero position after advance beyond the 9 position by a spring 40 as the next higher denominational rack is advanced one step. Pivoted to each rack 39 is a bar 3 below which extends a bar 5 pivoted at 6 and normally held up in the position shown by a spring 10, the free ends of the three bars 5 corresponding to the three denominations of the multiplier when in their normal positions, retaining a latch 7 in its normal position. Each bar has a hump 30 lying under the zero stop pin 17 when the rack 39 is in its zero position. As the rack is advanced the depressed stop pin 17 engages the hump 30 and depresses the bar 3 which through a pin 32 on a lever 31 pivoted at 31a to bar 3, depresses bar 5. As the rack passes beyond the 9 position a pin 37 on the bar 5 rocks a latch 34, 35, also pivoted to bar 3 and connected by a spring 36 to lever 31, out of engagement with the lever 31 whereby the pin 32 is moved from engagement with the bar 5 so that on the rapid return to zero of the rack 39 and the bar 3, the depression of the bar 3 by the depressed stop pin 17 will not affect the bar 5. At the zero position the latch 34, 35 is reset, to the position shown, by the lever 31 engaging a stop 18a. Consequently, as the bars 5 can be depressed by the bars 3 only during advance of the racks' 39, all three bars 5 are depressed only when the adding machine has carried out the number of cycles corresponding to the operated stop pins 17. When this occurs the latch 7 is released and permits longitudinal movement of a clutch control rod 11 by a spring causing the engagement of a one revolution clutch 12, e.g. as described in Specification 360,911, connecting a driving motor (not shown) to a resetting shaft 13. Zeroizing ; total taking. A projection 52 on the rod 11 releases the latch 50 whereby the control key and motor key are released to stop the adding machine and the lever 48 through Bowden cable 47 is returned to normal. A projection 17d on rod 11 moves all the latching slides 17a, to release the depressed stop pins 17. During revolution of shaft 13, a cam 46 thereon resets the carriage 19, Fig. 2, through bellcrank 46a, cams on a shaft 54 driven by shaft 13 operate the correction, the total and the motor key of the adding machine, and, at the end of the revolution a cam 53 on shaft 13 resets the clutch control rod 11 to disengage the clutch 12. Actuation of the total and motor keys effect printing of the product and actuation of the correction key releases the repeat key to render the adding machine ready for entering a further multiplicand. During total-taking rotation of the main shaft is prevented from actuating the counter 139, by a cam 58 on a shaft 62 which rotates only during total-taking and permits a latch 59 to drop, a tooth 60 thereon moving into the path of a tooth 61 on the arm 57 so that the oscillatory arm 55 normally operating the arm 57 idly stresses the connecting spring 57a. Punching. The operator now sets up the printed product on the punching machine by depressing the appropriate keys 63, Fig. 6. During this setting the roller 104, Fig. 6, on the travelling carriage 105 of the punch machine having moved from under a cam bar 101, permits a spring 116, Fig. 8, to move a link 110 to the left to rock the cam bar 101 anticlockwise through lever 108 pivoted at 109 and links 107, 106. A pin 117 on the link rocks a latch 93 to release a bar 92 which is raised to the dotted position, Fig. 6. by a spring 115. Thus, when the link 73 is depressed as each digit of the product is set up on the punch machine through cable 72, none of the bars 79, 87 are actuated, the lever 74 rocking idly about the fulcrum pin 78 and the bar 80 rocking idly about the pin 83. After the product has been set up the punch key is depressed when the mutiplicand, multiplier and product are simultaneously punched in the card, the carriage 105 being returned automatically to its initial position as described in Specification 328,255. The counter 139 is then zeroized manually in known manner. Specification 26896/13, [Class 106 (i)], also is referred to.