Patent GB-751931-A (GB)
Title: Improvements in or relating to record sorting apparatus
Inventor: BROIDO DANIEL
Filed: 1954-09-13
Abstract: 751,931. Statistical apparatus. BRITISH TABULATING MACHINE CO., Ltd. Sept. 13, 1954, No. 26428/54. Class 106 (1). Apparatus for sorting cards and the like comprises a data storage drum carrying a plurality of groups of storage members, each member being movable parallel to the axis of the drum between a set and reset position, means for rotating the drum in synchronism with the card feeding means, a group of setting members selectively operable under control of sensed data, and effective when operated, to set each group of storage members to represent data sensed from a different document, an operating member for each card sorting deflector, movable transversely to the axis of the drum by one storage member of each group, if the member is in the set position, to operate the related deflector, and means for resetting each group of storage members being so angularly spaced about the axis of the drum, in relation to the setting members, that each deflector is operated at substantially the time that the leading edge of the card reaches the correct deflector. The data is recorded by small holes punched in columns and sensed photoelectrically as described in Specification 729,892, [Group XVI], which also describes the feeding mechanism. As each cheque is fed from the stack it is aligned with respect to an aligning fence, not shown. The cheque is delivered to a plate 2, Fig. 2, where one of a series of pushers 5 engages the rear edge and carries the cheque along the sorter. As each cheque moves from left to right over the plate 2 it passes beneath a photoelectric sensing head 7 which in conjunction with a light source 8 senses the data recorded in a selected column of the cheque. After sensing, the cheque is carried over a series of deflector flaps 45 situated over the sorter pockets 51 until the appropriate pocket is reached and the open flap deflects the cheque into the pocket. A correctly sensed digit causes firing of two out of six gas valves, not shown, in circuit with an electromagnet 9, Fig. 5, mounted on the outside of the plate 6. Each magnet has an armature 10 secured to one end of a shaft 11 journalled in bearings in the plates 6. Each shaft 11 has secured to it two or more latch pawls, Figs. 3 and 6. These pawls engage notches in selector arms 14. There are ten arms 14, i.e. one for each pocket. Each arm is provided with six notches, but only two notches are engaged by the latch pawls 13. The pawls are normally held in the notches by the action of armature springs 52. This arrangement of pawls and notches serves to translate the two out of six coding into a selection of one out of ten. For example, if the digit five is recorded in the column being sensed then magnets 9A and 9C are energized. The movement of the armature of these magnets will rock shafts 11A, 11C. This will lift pawls from the selector arms for the pockets corresponding to the digits 1, 3, 5 and 9, Fig. 6, for the shaft 11A and digits 4, 5, 6 and 7 for the shaft 11C. The selector arm for the digit 5 is the only one for which both pawls are lifted and hence it is the only one which is released. A cam and linkage rocks the shaft 26 in a clockwise direction as viewed in Fig. 3 just after the magnets 9 have been energized. A selector arm which has been released by the pawls will follow the movement of the shaft 26. Each arm 14 is guided by a roller 19, Fig. 3. Each selector arm has a nose 53 which is tapered to form a cam face. When the arm is operated this nose lies in the path of travel of the associated storage rollers 20. After they have been reset the rollers pass in front of the noses 53 of the selector arms 14. If a selector arm has been released to operative position the nose 53 engages the side of the corresponding roller as it passes and shifts it to the set position. In order to provide different time delays between sensing a digit and operating the appropriate deflector ten cam follower arms 35, Fig. 3, are spaced around the circumference of a circle coaxial with the storage drum. Each arm 35 is coupled with a bell-crank 38 which is coupled with a pull-rod 41 connected to an arm 43. Each arm 43 is fixed to a spindle 44 which carries the pocket deflector 45 and an arm 47 which is spring-biased, 46, to keep the deflector normally closed. Specification 740,656 also is referred to.