Patent GB-143826-A (GB)
Abstract: 143,826. Haddan, A. J. H., (National Cash Register Co.). Feb. 21, 1919. Tickets, issuing; registering and recording number and value of; printing-arrangements. -A key-controlled motor-operated ticket printing and issuing machine is provided with two clutches ior operating different mechanisms, one clutch being rendered effective by depression of a number of keys, while the other is controlled by only one key. The invention is described in connexion with the machines set forth in Specifications 143,603 and 143,821, wherein one portion of the machine prints local tickets and the other portion coupon tickets, the values of the tickets in either case being registered and recorded. A single motor has two clutches, one for driving the local-ticket printing mechanism and the other for operating the coupon-printing mechanism. The "local" clutch is thrown in by depression of an issuer's key, and this results in one cycle of movement only for registering the value on the totalizers. When a coupon ticket is to be issued, however, amount and coupon determining keys have to be set before depression of the issuer's key and a number of cycles corresponding with a number of coupons is thereupon performed by the "validating" clutch. The motor and clutches employed are those of the kind described in Specification 17534/08, [Class 106 (i), Calculating, &c.]. The clutches are arranged co-axially on a spindle 741 and are controlled by locking-levers, one of which 747 is shown in Fig. 1. When a local ticket is to be issued, the issuer depresses his particular key 54 and rocks a lever 529 on a shaft 186, so as to disengage the rear end of the lever from a member 778 connected bv a link 777 with a spring-controlled sleeve 772, which consequently rotates and, through the arm 771, raises the lever 747 to release the local clutch and start the motor. When the local clutch has effected a half-cycle of movement, the validating-clutch is automatically released in order to effect the necessary operation of the registering-mechanism. A cam-disk inserted in the driving-connexions for the local-printing arrangements is adapted at the end of a half-rotation to move a link 797 and withdraw a spring- controlled pawl 790 from engagement with an arm 774 on a spring-controlled shaft 787. This shaft, being thus freed, rotates and through an arm 786 releases the validating- clutch so as to drive the main shaft 204 and the shaft 348 carrying the differential driving- cams and the detail-strip printing cams. Interposed in the driving-connexions to the shaft 348 is a coupling-pawl 808 pivoted on a member fast to the shaft and carrying a roller 809 normally engaging a notch in an adjacent driving-member loose on the shaft. The local clutch is thrown out at the end of the local printing cycle by means of the cam-disk above mentioned, and the link 797 through interengaging arms on the sleeve 772. The validating-clutch is also thrown out by means of a stud on a disk 824 on the main shaft 204. This stud causes an arm 821 to rock and so rotate the shaft 787 to throw out the clutch. The disk was rotated one step by the stud when the clutch was rendered operative, and its return to normal position at the end of the cycle effects the above-mentioned disengagement of the clutch. When operation of the local-printing mechanism is not required, the validating-clutch is liberated by the operation of the keys as described in Specification 143,603. The yoke 5051, rocked by the' depression of a validating-key, is connected with a lever 830 normally blocking a lug 831 on a member 832 pivoting about a sleeve 779 and linked with an arm 836 fixed on a shaft 723. A spring 837 tends to rock this shaft and the member 832; but this is normally prevented by engagement of a nose 839 on the member 832 with the rear edge of an arm 841 loose on shaft 186 and positioned by a spring 842 and a stop. When the shaft 186 is rocked by depression of an issuer's key, the arm 841 is moved, and consequently the member 832 is freed, and the clutch rendered effective by an arm on the shaft 723 engaging the pawl 790 and so releasing the shaft 787. If a validating-key has not been first depressed, however, the member 832, when freed as described above, is held against movement by engagement of the lug 831 with a lever 830. If the validating-key is depressed, the lever 830 disengages from the lug 831 and engages a lug 851 on the member 778, so that when the issuer's key is depressed, the member cannot advance, and consequently the local clutch is not affected. The validating-keys control the number of cycles of operation for printing the desired number of coupons as follows. The toothed disk 824 is differentially set according to the particular key depressed, and as each coupon is printed, the disk is returned one step towards normal. This intermittent drive is effected by pawl 860 pivotally mounted on a lever 862 loose on shaft 204 and operated by an adjacent lever 863 having a roller 866 riding in a cam-groove 867 rotated synchronously with a shaft 204. The lever 863 has a pin engaging a slot in the pawl, and the arrangement is such that the pawl is first rocked into or out of engagement with the disk 824 before it is bodily moved to drive the disk or return it idly to normal position. The lever 862 is locked between its oscillations by means of an alining-pawl 877 which engages teeth on the upper extension of the lever and also serves similarly to hold the disk 824 in its various positions. The registering-mechanism operated from the shaft 348 has to be disconnected at the end of the first rotation of this shaft, and this is achieved by the rocking of the coupling-lever 808 due to its engagement with a stud 888 carried by a bellcrank lever 889 pivoted on a bifurcated arm 891 linked to the member 832. When this member is liberated by depression of the keys and moves forward, the pin 888 is carried by the forward limb of the arm 891 into the orbit of the coupling-lever, so that at the end of one revolution, the required disconnexion occurs. When the member 832 is restored to normal at the completion of the whole operation, the stud 888 is carried forward again clear of the coupling-lever. Overthrow of shaft 348 is prevented by an arm 898 co-operating with a pin 899 on a pitman 847, which, by means of a cam-slot 901 and a roller 902 on an arm of the shaft 186, is moved near the end of the rotation of the shaft 348 to place the pin in position to be engaged by the arm 898. A spring-controlled roller 907 engages a snail-cam on the shaft 348 to ensure its complete return to the zero position. In total and sub-total printing operations which are effected in the manner described in Specification 8119/15, [Class 106 (i), Calculating &c.], the shaft 348 must receive two complete rotations, and it is necessary therefore to prevent it from becoming disconnected from its driving-gear at the end of its first rotation. When the total lever is positioned for total or sub-total printing, the shaft 502 is rocked clockwise and, through a lever 909 and link 912, causes a hook 913 to seize the pin 888 and prevent its rearward movement into the orbit of the coupling-lever 808. Furthermore, to stop the local clutch from operating, the lever 909, by means of a link 916, and pin 920, depresses one end of the lever 830 to bring the other end into the path of the lug 851 on the member 778. This rocking of the lever 830 also permits a second operation of the validating- clutch. The shaft 186 is restored to normal position near the end of the second rotation of the shafts 204, 348 by means as described in Specification 8119/15, and the arm 841 is then raised by its spring 842 to block the member 832 and so render the validating-clutch ineffective. Specification 142,156, [Class 56, Glass], also is referred to.