168,012. Haddan, A. J. H., (National Cash Register Co.). May 13, 1920. Number-printing apparatus.- Machines for issuing a. variable number of tickets of several different classes or values, as described in Specification 167,833 [Class 106 (iii), Fares &c.], are provided with consecutive-number printing-devices adapted to print on the respective tickets either the consecutive number for the particular class or the consecutive number for tickets of all classes, according to the set. ting of a coupling member. Date printing devices and total counter are also provided. The ticket strips pass between guide plates 451, 452, Figs. 5 and 6, having openings to accommodate type rollers 453 and impression rollers 454 for printing standard matter, date printing devices 466, and the consecutive-number printing devices 470. The rollers 454 may be raised by means of levers 456 extending out through the bottom of the machine tc facilitate the insertion of the strips. Upon the depression of one of the price keys 91, Fig. 5, a. corresponding broad pinion 329 is moved into gear with pinions 327, 328, Fig. 8, on a main driving shaft 85 and driving connection is established for the printing and feeding devices of the corresponding ticket strip. The rollers 453 are mounted in arms 492 on a rock shaft 493 and shortly after the commencement of an operation are all moved into feeding relation with the strips by the action of a cam 496 on an arm 494 on the rock shaft. but only the roller for the particular strip to be fed is driven. The type is inked from a roller 501. Each date printing device comprises a pair of circular members 505, Fig. 6, with feeding flanges 506 and two sets of printing wheels 514 for the two parts of the ticket. A date indicator 523 of similar character is located at one side of the machine, the printing wheels being set therefrom. Each consecutive-number device comprises two similar sets of type wheels 564, 565 for the two portions of the ticket, and a counter 566 visible through a reading aperture. Type plates 545, 546 for printing standard matter are carried by side plates 541 having feeding flanges 555, Fig. 12. A yoke 571 loose on the shaft 562 of the number wheels carries a four-stepped pawl 573 co-operating with ratchet wheels rigid with the number wheels, and receives a rocking movement at each rotation of the whole device 470 to add one to the number, the ratchet wheels having deep notches for transfer. The printing wheels have similar ratchets and yokes 577, 578 connected together. The yoke rods 572, 579, project at the ends through slots 591, 592, Fig. 7, in the end plate 541 and in the gear disc 475 into a, cam groove 593 in a disc 594 loose on the shaft 544, The disc 594 for each device has a notch 596 engaged by an arm 597, Figs. 5 and 6, fast on a shaft 598, which at one end of the machine carries an arm 599, Fig. 8, adapted to occupy either of two positions on the shaft. This arm is provided with a pin 600, Fig. 10, adapted in the position shown to engage a hole in a cam arm 601 on a sleeve 602 loose on the shaft 598, the cam arm engaging a groove 604 in a driven disc 605. The shaft 598 is thus rocked first in one direction and then in the other at the latter part of every operation, and all the cam discs 594, Fig. 7, are similarly rocked. The action of the cam discs 594 is such that all the yoke rods 579 receive a rocking movement to add one to the type wheels irrespective of the class of ticket issued, whereas only the yoke rod 572 of the particular device receiving rotation to issue a ticket is rocked to add one to the corresponding class counter. The pin 614, Fig. 8, securing the arm 599 to the rock shaft 598 may be removed to enable the arm to be displaced laterally out of driving engagement with the cam arm 601, the arm being secured by the pin in its new position. A projection 615 on the arm engages a hole in the machine frame to prevent movement of the shaft 598. The main cam 604 now rocks the sleeve 602 only, and the cam discs 594 remain stationary, with the result that only the printing wheels 564, 565 of the device 470 receiving rotation will be advanced. A counter 621, Fig. 8, is actuated at each operation of the machine by an arm 626 on the sleeve 602 to show the total number of tickets issued. The counters 566 of all the consecutive-number devices 470 and the counter 621 are screened from view by a plate 761 carried by side plates journaled on the shaft 544. By turning an external lock a plate 774, Fig. 5, is disengaged from a groove in the shaft and the screen is rocked rearwards to expose the counters.