Patent GB-484911-A (GB)
Title: Improvements in or relating to record card controlled tabulating machines
Filed: 1936-11-09
Abstract: 484,911. Statistical machines. BALDWIN, R. E. Nov. 9, 1936, No. 30580. [Class 106 (i)] A record card controlled statistical machine comprises two (or more) counters (A1, A2) each having a set of actuators provided with type carriers 52, which sets are normally disconnected from each other, means 120, 125 for connecting the actuators of one counter A2 to those of the other counter A1 only when a total-taking operation is to occur and means for conditioning said other counter A1 to receive the total through the connected actuators from said first mentioned counter A2. The references A1 .. A3, G1 .. G3, used below, are not on the drawings but are used to distinguish between the counters. In the machine described there are three front counters A1, A2, A3 and three corresponding rear, grand total counters G1, G2, G3. When a counter A1 .. A3 prints its total, the latter is normally transmitted to the corresponding rear counter G1 .. G3. The change of designation control mechanism is of the kind set out in Specification 371,849. When a. sub-group change occurs, counter A1 prints its sub-total, and the latter is transmitted to counter G1 and also restored to counter A1. Counter A2 then prints its sub-group total, and this total is transmitted to counters G2 and A1, and counter A2 is left at zero. Next, counter A3 prints its sub-group total and the latter is transmitted to counters G3 and A1, counter A3 being left at zero. Counter A1 now holds the sum or cross-total of the totals printed by counters Al, A2, and A3. A fourth totaltaking operation then occurs during which this cross-total is printed from the counter A1 and the latter left at zero, but this cross-total is not transmitted from counter Al to counter G1. When a main group change occurs, the above four total-taking operations are followed by grand total-taking, during which the grand totals on counters G1, G2, G3 are printed simultaneously by means of the printing elements of the front counters A1, A2, A3. This latter is effected by lowering a grand total link 195, Fig. 10B, (not shown) to actuate the grand total taking mechanism described in Specification 388,413. Specification 426,054 also is referred to. In Specification 371,849 a lever 73 normally rocks at each rotation of the mainshaft and is prevented when the designation changes. In the present invention this lever, when arrested, trips a device which allows a clutch to engage. These means also ensure five revolutions of shafts 1, Fig. 1 and 41, Fig. 6. Five-cycle control. A five-toothed ratchet 3 secured to shaft 1 coacts with a pawl 5 pivoted to a plate 4 freely mounted about shaft 1. A finger 7, pivoted at 6 to plate 4, is held against spring 8 by a latch 9 pivoted at 10 to plate 4. A bell-crank 11, 12 loose on shaft 1 has a lug 13 normally just below block 14 on latch 9. Pivoted at 15 to arm 11 is a trip 16 with a curved part 17 at one end and pivoted at 18 to link 19. An arm 21 secured to the main driving shaft 20, has two rollers 22, 23 on opposite sides. Arm 21 turns continuously. At the other end, link 19 is pivoted at 19a to a plate 24, loose on the double - total shaft 25, and having pivoted to it a link 26 the upper end 26a of which lies under a lug 27a on a lever 27 secured to a shaft 28. Rod 26 is held in this position by a bellcrank 29 pivoted to 26 at 30 and to a control lever 31 at 32. By moving lever 31 downwards and removing end 26a quite clear of lug 27a the present mechanism is prevented from acting and the machine operates in a normal manner. Shaft 28 is the same as the shaft 72 in Specification 371,849 and when either a sub-group or main group designation changes the shaft 28 is held from rocking at each card cycle. As shaft 20 rotates, roller 22 meets the curve 17 and tries to rock the trip 16 counterclockwise but normally lug 27a has just been rocked clear of the end 26a. The trip 16 moves link 19 to the right and rod 26 rises freely. When a designation changes, however, lug 27a obstructs the end 26a and the trip is moved bodily to the left by roller 22 so that arm 11 moves counterclockwise, raising arm 12, lug 13 and block 14 to release finger 7. Spring 8 rocks finger 7 counterclockwise. The roller 23, which normally passes clear of finger 7, now rocks the finger 7 and causes pawl 5 to rotate shaft 1 one-fifth of a revolution for each rotation of shaft 20. A cam 34 (not shown) on shaft 1 and coacting with pins on an arm 36 pivoted to plate 4, prevents, for five cycles, the plate 4 from being completely restored to relatch the finger 7. A cam shaft 41, Fig. 6, is similarly driven through five steps by having its actuating pawl connected by a link 45 (not shown) to plate 4. Of the five cycles, the first two are used for adding and spacing and are idle as far as total-taking is concerned : the next three cycles are used for printing the total A1, A2, A3 as set out above. Total-taking ; sub-total-taking.-The wheels 47, Fig. 6, of the front counter A1 (or A2 or A3) coact with adding sectors 52 and printing sectors 54 which are coupled by rods 55 to the sectors 56 controlling the wheels 57 of the rear, grand total counter G1 (or G2 or G3). The wheels 47 are free on a spindle 48 carried in cam slots 49 of a pair of arms 50 pivoted at 51 to the machine frame. Wheels 47 and 57 are engaged and disengaged with their sectors for adding and totalling as described in Specification 388,413. In order to restore the sub-total A1 to the first front counter, one of the arms 50 of this counter is controlled by a link 61 having upper and lower recesses 62, 63 cooperating with pins 66, 67 on a member 65 secured at 64 to a shaft which rocks at each machine cycle. For adding, the plate 61 is raised and pin 66 controls the engagement of wheels 47. For sub-totalling, the plate 61 is lowered by known means so that its lower edge rests on pin 67. Thus when shaft 64 rocks clockwise, arm 50 would be unaffected and wheels 47 remain in engagement with sectors 52 to zeroize the wheels. Pin 67 passes into recess 63 and when shaft 64 returns counterclockwise, wheels 47 would be disengaged, leaving them at zero. To prevent this, a finger 68 pivoted to a, shaft 69 and controlled by a cam 71, Fig. 10, on the shaft 41, overlies an extension 72 of the control plate 61. During the first total-taking cycle (the third, of the above-mentioned five cycles) this cam lowers the end 68a and obstructs the movement of plate 61 so that the latter can only move down to bring the recess 62 clear of pin 66. Further downward movement is prevented by the engagement of parts 72 and 68a and the plate 61 remains in midposition, clear of both pins 66 and 67. The wheels 47 thus remain engaged with their sectors 52 on both outward and return movement, so that the sub-total Al is printed and left on the wheels 47. During the return movement the grand total wheels 57 are enmeshed, with their sectors 56 so that, through link 55, the sub-total is also entered into wheels A front total shaft 75, Fig. 4, and a back total shaft 99, Fig. 5 (not shown), coupled to it are together rotated one revolution when a designation changes. Shaft 75 is the same as shaft 63 in Specification 371,849 and has a cam 76 controlling a lever 78, pivoted at 79, and a link 82 which actuates mechanism for locking the sectors 52 and 56 in their set positions to prevent accidental movement whilst the counter wheels 47 and 57, Fig. 6, are being engaged. To allow printing of the totals A1, A2, A3 in the correct sequence and their successive transmission to counter A], the following means are used. A cam 110, Fig. 4, on shaft 1 coacts with a roll 111 on a link 112 pivoted at 113 to the lever 78. The lower end of link 112 is hinged to a short arm 114 pivoted at 115 to the machine frame. At a designation change, total shaft 75 rotates once and before cam 76 affects arm 78, plate 4 has been operated twice by shaft 20 (adding and spacing cycles). At the third action of plate 4 and shaft 1, cam 76 moves lever 78 (sub-total cycle as set out above). During the fourth and fifth cycles cam 110 engages roller 111 and, through link 112, prevents lever 78 from returning, thus holding the machine for two more total-taking cycles. During the next cycle, the parts are restored. During the two additional cycles the totals are printed from counters A2 and A3 and transmitted to counter A1. Coupling the front counters together, Figs. 6 and 15. Pivoted at 119 to each denominational sector 52. 54 of the three front counters A1, A2, A3 is a coupler link 120 connected by a link 121 to a frame 122 rockable about a fixed point 123. There is a frame for each counter and each frame is controlled by a toggle, as 132, and cam, as 128, on the shaft 41 which moves synchronously with the shaft 1. Recesses 126 in the links 119 coact with the ends 127 of arms 125 on shafts 124. Each shaft 124 carries rigid on it the three corresponding denominational arms 125 of the three front counters. The arrangement for two front counters (with two rear counters) is shown in Fig. 15. Cams 128, and 128a (not shown), and 128b (not shown), on the shaft 41, which is given five steps of 72‹, raise the couplers 120 of the three front counters A1, A2, A3 respectively by straightening the toggles 132. The arrangement is such that the couplers of counter A1 are raised during the third, fourth and fifth cycles (the three total-taking cycles) ; those for counter A2 during the fourth cycle only ; and those for counter A3 during the fifth cycle only. During the fourth cycle, for instance, counters A2 and A1 are coupled together since their frames 122 both raise their links 120 to meet the ends 127 of the two corresponding sets of arms 125 so that when the counter A2 is zeroized to print its total the latter is transmitted to counter A1. In order that the sectors of the second and third front counters A2 and A3 shall be released only during the fourth and fifth cycles respectively, cams are provided o