Patent GB-450410-A (GB)
Title: Improvements in or relating to record-controlled statistical printing machines
Filed: 1935-01-16
Abstract: 450,410. Statistical machines. BRITISH TABULATING MACHINE CO., Ltd., Victoria House, Vernon Place, Southampton Row, London. Jan. 16, 1935, No. 1504. Convention date, Jan. 17, 1934. Addition to 409,373. [Class 106 (i)] Total-taking.-In a record-controlled statistical printing machine according to the parent Specification, the printer magnets (11) are operable directly from the card-reading (LB) and each printer magnet, when energized, closes associated contacts to complete the circuit of the corresponding counter magnet (10). According to the present invention, the printing mechanism includes reciprocating typecarriers 20 arrested differentially when the printer magnets 11 are energized and the contacts 50 for each counter magnet 10 are closed by relative movement between the corresponding type carrier and a part 43 which moves with the carrier whilst the latter is in motion and continues to move after the carrier has been arrested differentially. The heavy lines in Fig. 1 show the circuits, added to the normal circuits, for carrying the present invention into effect, using Hollerith type cards. The lower brushes LB are plugged by wires such as 12 to the sockets 13, so that when a hole is read a circuit continues through contacts 18<a> to energize the printer magnets 11. The latter arrest their type bars 20 by pawls 35 and cause contacts 50 to close, as described below, and complete parallel circuits from sockets 13 through counter magnets 10. A cross-head 21 has pivoted to it spring-pressed arms 23, the free ends of which abut the lower ends of the type bars so that the latter rise with cross-head 21 until arrested by pawls 35. A depending link 44 is carried on each arm 23. A shaft 28, rocked by cam 26 on shaft 24 for listing or by cam 27 on shaft 25 at total-taking, raises the cross-head 21 through parts 30, 31. At the same time shaft 28, through linkage 42, 41, 39 raises a second cross-head 37 in unison with the first cross-head 21. Part 37 carries an adjustable cam 43 for each type bar link 44. At first, for any one card column, parts 43, 44 rise together. When, however, the bar 20 is differentially arrested, part 44 rises at a much slower rate and cam 43 causes it to force to the left a link 45 pivoted to the ends of two bell-cranks 46, 47 which latter are also connected for parallel motion by a link 48. Movement of nose 49 on link 45 to the left closes the corresponding counter contacts 50. For convenience, alternate links 45 have their noses 49 at opposite ends and the contacts 50 are similarly staggered. Each counter wheel is geared to a reading-out brush pair 70, coacting with digital segments 69 and common segment 72. At total-taking a magnet 18 closes contacts 18b and brushes 75 of emitter 74 rotate to pass a timed impulse to printer magnet 11 according to which segment 69 the brush 70 is standing upon. Magnet 18 also opens the contacts 18<a> in the counter magnet circuits. If printing of an amount is effected in several columns of the record simultaneously, the contacts 50 for these columns are connected in series by plug wires 82, and by plug wires 80 and 83 to sockets 81 and a double wound relay 85. For a two or three denominational number, two or three relays 85 would be used. The unused relays 85 are plugged by wires 86 to their sockets 81. If the type bars have correctly printed the same amount, they will close their contacts 50 simultaneously to energize the relay 85 (left-hand winding). The other relays 85 are energized over lines 86 so that for complete agreement in the multiple-printed amount, all contacts 85b are closed to give a series circuit which energizes magnet 100, the latter opening its contacts 100<a>. For disagreement, the series circuit through contacts 50 is not made, the top relay 85 remains de-energized, and magnet 100 remains de-energized. Contacts 100<a> remain closed and a circuit 19, 101, 104, 103, 100<a>, 14 energizes relay 103 which opens its contacts 103<0> to stop the machine. Relay 103 also closes contacts 103<a> so that a circuit 19, 101, 104, 103, 103<a>, 105, 14 lights a lamp 105 to indicate disagreement.