Patent GB-190102942-A (GB)
Title: Improvements in Cash Registers
Inventor: HADDAN HERBERT JOHN
Filed: 1901-02-11
Granted: 1902-01-23
Abstract: 2942. Haddan, H. J., [National Cash Register Co.]. Feb. 11. Receipts, checking and recording.-Improvements in cash registers of the type described in Specification No. 5729, A.D. 1895. Two adders and two cash drawers are provided to one keyboard so that the instrument serves for two separate departments of a business, either counter and drawer being put into or out of action by a special key. The adders are on a common shaft and the toothed sectors for operating them are connected in pairs so as to be able to be operated together by the one keyboard ; the units pair is fast on its shaft ; the tens pair is loose on the shaft but is connected by a coupling-bar ; the hundreds pair, which is also loose, is geared to pinions on a parallel shaft. The adders are put into gear with the sectors by means of cams 13<a> on a shaft acting on arms 18<a>, 19<a>, but the following arrangement ensures that only one is in use at a time. The arms, pivoted on the frame and having wide holes about the shaft on which the adders rock, bear against undercut bolts 10, which spring out from the adders to arms 8, 9 on a push-rod 6. The arm 9 has a hole 16 to take a pin 15 on the adjacent adder when the other is put into action and a third arm on the push-rod bears a pin, which similarly locks the other adder and also, by occupying a hole in the main frame, prevents the push-rod from turning. The push-rod 6 is operated by a mitred push-key at one end and bears, at the other end. a bevelled button 23, which snaps past one end of a detent 22, Fig. 9, that is afterwards disengaged by a cam 24 on the main shaft 25 ; while the button is pressing the detent, the latter in turn prevents reversal of the cam. The adders are put out of gear by cams 13<b> acting on fixed arms 28<a>. A rocking piece 30, Fig. 6, for printing the distinguishing marks of the two departments, is set by the push-rod, and the name of the department, to which the counter in use at any moment belongs, is displayed by an indicator 4, which is rocked by a lever 40. Normally the name for the counter on the right of Fig. 4 is shown but, when the counter on the left is brought into use, a rigid arm 52 upon it displaces a hanger 46 on the fulcrum shaft of the indicating-lever into the path of the key coupler 50, so that motion is transmitted to the lever and the indicator is rocked into its other position, where it is held by the latch-bar 39 of the tablet rods. The mechanism for operating the cash drawers which are superposed is as follows, Figs. 7 and 8 :- One of a pair of vertically-sliding hooks 59 is disengaged from its corresponding drawer by one of a pair of cams 69, 70 on a shaft 67, which is shifted longitudinally with the push-rod 6 and is rocked by an eccentric on the main shaft 25. The drawer is then thrown open by one of two levers 90, which are connected by links 94 to springs 102. The connection between links and springs is not direct but the springs pull on a yoke 99 and the links are jointed to adjacent bell cranks 95, 96, while a latch 104 on the yoke engages pins 105 on the bell cranks. Both these latches are disengaged by the key coupler 50 striking them, and, when pressure on the keys ceases, re-engagement occurs only with the bell crank of the released drawer, which has been moved to some extent by the springs. The full effect of the springs pulling the yoke is then exerted to open the drawer. Should the drawer be improperly held in, so that the reengagement does not take place, the yoke alone is operated by the springs and the next operation of the keys will be necessarily against the tension of the springs. Thus the springs which open the drawer also draw the key coupler with them, but the described devices relieve the keys of the work of putting the springs in tension and throw it upon the cash drawer except when the latter is held closed.