Patent GB-191116432-A (GB)
Title: Improvements in and relating to Registering Apparatus.
Inventor: HOLLERITH HERMAN
Filed: 1911-07-17
Granted: 1912-07-11
Abstract: 16,432. Hollerith, H. July 17. Counters with recording-apparatus; numeralbearing elements.-Relates to the terminal visual o r printing numeral - bearing elements o f counting- apparatus such as may be used in statistical calculating - machines, telephone - e x c h a n g e counters, &c., wherein these parts are normally detached from the totalizing - wheels and are positioned at will into agreement with the total carried by the totalizing-wheels by means of manually - energized spring parts. Each totalizing-wheel 7, 8 is actuated by a pawl 12, reciprocated by an electro - magnet 10, which engages the receiving ratchet-wheel 7, with which also engages the transfer - pawl 24 of spring - lever and pawl transfer-mechanism actuated by a snail cam 8 upon the next lower totalizing - wheel. The numerals 42 are upon segments 40, with stepped sectors 44, mounted loosely upon a shaft 41 and normally retained in the position of no-indication shown by means of a yoke 50 acting in opposition to springs 45, of which there is one for each segment, there being one segment with ten numerals assigned to each totalizing-wheel. When it is required to set the segments in accordance with the total standing on the totalizer, a handle 52 is thrown over, whereupon a pivoted controlling-bar 64 is moved away from spring-urged feeling-fingers 60, one for each denomination, which swing upon pivots 61 until projections 70 thereon are arrested by,the snail cams 8. The handle also withdraws the yoke 50 and allows the springs to rotate the segments until the stepped sectors are arrested by the extremities 71 of the feeling-fingers, in which positions numerals corresponding with the total upon the totalizing-wheels are presented to the reading-aperture or the printing point. To record the total, an impression roller 90 is mounted upon a block 91 adapted to move transversely in guide-bars 92. An inking-ribbon 80 passes between spools 81, 82 and a record sheet 85 is manually fed over a guide-plate 86 and between feed rollers 87, 88. In a modified arrangement, the transfer-pawls are placed upon the feeling-fingers 60 and the controlling-bar therefor is dispensed with, so that the pro- .iections 70 upon the fingers bear constantly against the snail cams. Alternatively, the numeral-bearing segments may engage the snail cams directly. Zeroizing-mechanism.-Upon the rotation of the main spindle 2, by means of an external handle, a recessed disk 33 fast thereon throws a spring plate 36 backwards so as to put the transfer levers out of action, and the rotation of the spindle effects engagement between grooves therein and spring-pawls 38 upon the totalizing-wheels, whereby the lowest wheel is returned to zero and the remainder to " 9." As the handle completes a half rotation, the spring plate releases the transfer levers, which then bring all the higher wheels to zero. Statistical machines.-The application of the apparatus to the Hollerith tabulating system is indicated diagrammatically in Fig. 10, wherein a punched record card 100 controls circuitclosing devices consisting of mercury cups 101 and spring pins 102.