Card counter

Abstract

Abstract 325,480. British Tabulating Machine Co., Ltd., (Assignees of Ford, E. A.). Nov. 19, 1927, [Convention date]. Divided on 300,909. Statistical apparatus.-In a record -card - controlled counting machine having units counters for the card-hole positions connected individually with the card-reading device, a reject counter has a connection (182), normally effective, which transmits at the end of each card cycle an impulse to the reject counter, there being controlling means (183) which operate, when a counter has been actuated by a hole being read, to disable the said connection to the reject counter. The apparatus described is the same as that described and shown in Figs. 3, 9, 15, 16, 18, 21, and 22 of Specification 300,909. When a card-hole is read by the brush a circuit is closed from positive line to 43, 44<1>, 181, 182, 183, 184, 185, card-lever contacts 186, to negative. Simultaneously, a circuit is made from 182 to common bar 188, a units counter magnet 107 and segment 179 corresponding to the hole under the brush, 180, 189, to 186. Energization of 183 unlatches 192 to open contacts 182. Late in the card cycle a cam rotated by the sorter motor restores part 192 to close contacts 182. Normally, therefore. reject counter magnet 107 is energized when the rear edge of the card leaves the brush and the latter meets the base contact roller 43. If a hole has been read, however, contacts 182 are open and the reject magnet is not energized. Hence this magnet will count all cards not counted on other units counters 9 - - 0, X, or E. Specification 284,241 also is referred to.

Inventors

• 👤 Eugene A Ford

Bibliographic Details