Patent GB-215010-A (GB)
Abstract: 215,010. Shipley, B. M. April 27, 1923, [Convention date]. Cash registers with operating-means; keyboards.-In a machine having a number of'control banks of keys and a release key or motor bar, a number of separate locking controls are imposed upon the release shaft and by the addition, omission or modification of one or more of the locking elements the machine can be adapted to different service requirements. Thus it may be partially released by depression of a key in one bank only or in each of two or or more banks, the motor bar in each case having to be subsequently depressed to complete the release of the operating- mechanism. The invention is shown as applied to a known type of machine having three control banks and a motor bar 45, Fig. 2, controlling the release shaft 25 constantly urged clockwise by a spring to start the machine. Radial depression of the motor-bar causes through pin 51, lever 52, pin 53 and hooked lever 54 the clockwise rocking of arm 58 connected by a yoke 60 with a bifurcated arm 59, Fig. 8, embracing a pin 61 on a pawl 34. This pawl is one of two neighbouring pawls 34, 35 normally in position to obstruct a pin 32 on an arm 33 fixed to shaft 25. Before the latter can turn therefore it is necessary to remove both pawls and as pawl 34 is shorter than the other the effective depression of the motorbar can only occur after the removal of pawl 35. This pawl is under the control of the control banks and in the particular embodiment shown in Fig. 1 is connected with the first control bank while the other control banks merely possess a locking effect upon the release shaft so that depression of a key in each of these two banks followed by depression of a key in the first control bank is necessary before the motor bar can be effective to start the machine. Each of the second and third banks controls, through its detent plate connected with arm 76, Fig. 5, bearing a pin 79, an arm 74 connected by a yoke 73 with a hook 71 (72 in Fig. 5) normally positioned to obstruct arms 68, 69 in Fig. 5, pinned to shaft 25. The detent plate for the first bank similarly controls the hook 72 which, however, is also connected by a yoke 83 with the pawl 35. To provide for the case in which it is desired that the third control bank should not control the release shaft, it is only necessary to remove the hook 71 with its yoke 73 and arm 74 appertaining to that bank and so leave only the locking control by the second bank with release by the first bank and the motor bar When it is preferred that the machine should operate after depression of a key in any of the control banks, a single yoke connects the arms 74 of all three banks and is also pinned to the yoke 83 secured to the pawl 35. Printing totals and sub-totals. - For these operations it is necessary to remove the above separate controls by the various banks and for this purpose a shaft 95 is rocked clockwise, by movement of the total lever plate 91 out of adding position, through the action of a cam slot 92 on a pin 93. Arms on this shaft are thus caused to rock levers on shaft 36 and by means of pins on these levers to remove the hooks 71, 72 and pawl 35 out of effective position. Interlocking.-To prevent release of shaft 25 unless the keys have been fully depressed, a detent plate 101, Fig. 3, controlled by the keys is provided for each bank and is adapted, when a key is only partially depressed, to rock an arm 107 into the path of movement of an arm 108 fixed to shaft 25. Similarly when the shaft has been released these arms prevent depression of keys. An arm 109 which may be integral with arm 108 is provided to displace the detent plate 101 at the end of the operation in order to release the depressed key.