Patent GB-364715-A (GB)
Title: Improved means for interprinting minutely punctured record cards or strips such as statistical cards or jacquard loom cards
Filed: 1930-10-22
Abstract: 364,715. Interpreting peforated records, such as jacquard cards. PARIS, R. E., 521, West 57th Street, New York, U.S.A. Oct. 22, 1930, No. 31756. [Class 142 (i).] Perforated records such as statistical cards or jacquard loom cards wherein the data are represented by minute punctures, are read by passing only an electrical discharge through the punctures. Except for the method of reading the record cards and operating the magnets 62, Fig. 1, the statistical apparatus is generally similar to that shown in Specification 346,413, the stops 53 for the adding or printing mechanism being selected and raised by denominational fingers 54 carried by slides 55 which are moved by springs to the right to follow a universal bar 56. The slides have teeth 58 which are intercepted by stops 57 on the armatures 61 of magnets 62, according to which magnet has been energized by the card-reading. The universal bar 56 is operated by members 63, 64 from cam 59 actuated from the main shaft of the machine. When all the fingers 54 have been positioned differentially they are lifted to raise the correct stops 53 by a frame 65 actuated by bell crank 66 and cam 67. The cards 10 are read in motion, synchronously with the movement of bar 56, in a passage 68 between two plates 69, 70 of insulating material ; bedded in those plates are strips 71, 72, Figs. 1 and 5, having each a central point 73, 74. Each pair of coacting strips 71, 72 are in the same vertical plane and their points are opposite each other. Insulating discs 75, Fig. 3, between adjacent pairs of strips 71, 72 and contacting with the card, prevent cross-sparking from column to column. Strips 72 are connected by leads 76 to a corresponding number of secondaries 77 of a coil, the other side of each secondary being connected by a lead 79 to a high resistance relay 80, the circuit of each relay being completed by a lead 81 to connection box 82, 84, 85 (similar to that described in Specification 346,413), a lead 83 and a strip 71. There is a lead 83, rod 84, rod 82, and lead 81 for each strip 71. When, therefore, a puncture is read by an electric discharge passing therethrough between points 73, 74, the corresponding relay 80 is energized to attract its armature 91 and closes contacts 92, 93 at a differential time corresponding to the position of the puncture in the card column. This closes a circuit +ve, 88, 62, 94, 92, 91, 90, -ve to actuate the corresponding magnet 62 and finger 57. The positive and negative are energized from a source 86, through lines 87, 89, the latter being broken at 98 by the universal bar 56 near the end of the cycle. When a relay 80 is energized as above contacts 93, 91 provide a holding circuit+ve 96, 80, 95, 93, 91, 90, -ve. The circuit of the primary 99 of spark coil is 86, 100, 99, 101, 102, 104 (whilst magnet 103 is de-energized), 105, 108, 109, 110, 86. Member 105 has a tooth 106 which is oscillated by a toothed disc 107 driven from the main shaft, so that vibrating contact occurs at 108, 109. At each end of the reading apparatus a contact blade 112 contacts with a strip 72 but normally the edges of the card separate these contacts. When, however, there is no card, contacts 112, 72 are closed to energize the magnet 103, this lifting its armature 102 and breaking the circuit of the primary 99.