Patent GB-190525156-A (GB)
Title: Improvements in Adding Machines.
Inventor: GINET JOSEPH HUGH
Filed: 1905-12-04
Granted: 1906-08-23
Abstract: 25,156. Ginet, J. H. Dec. 4. Calculating-apparatus; counting-apparatus.-In a single-bank key-set motor-operated adding-machine, the mechanism is divided into two groups, (1) including the spring - motor key-board with interlock, and differential setting-mechanism controlling the motion of the main operating-shaft, and (2) the totalizing-counter with its zeroizing, transferring, and associated locking-arrangements, the connexion between these groups consisting of a master setting-wheel splined upon the main shaft but moving, longitudinally with a small carriage, which can be brought to the position corresponding to any desired counting-wheel by means of a denomination key. Fig. II shows those parts arranged in a common casing and framework, the motor 13 driving the main shaft 23 through gearing and actuating a bell 18 when almost run down. Upon the shaft are nine pinions 25, one for each key, and these parts are normally held stationary by the detent 28, Fig. VII, which. engages the ratchet 26 until a key is depressed, when the following action results :-The shank 31 moves down against its spring 33, and rocks the locking- plate pivoted on the rod 48 so that its upper edge prevents the depression of the stud 35 on any other shank ; the control wheel 45 gears with the corresponding main-shaft pinion, a projecting tooth on the spring latch-plate 38 snaps into a slot on the shank and locks it down, and finally the arm 29 on the rock-shaft 27 is moved and throws the detent on the main shaft out of gear. The shaft then rotates until a pin 46 upon the engaged controlwheel strikes the projecting end of the latch-plate and forces it back, releases the shank which flies up, allows the main-shaft detent to re-engage, lifts the control wheel free so that it may be rotated to normal position by a spring, and simultaneously unlocks all the other keys. The pins on the control wheels are positioned according to the value of the keys..The master setting-wheel 59 on the main shaft forms the connexion between the setting and totalizing parts, and is mounted on a carriage 53, 61, controlled as to position by a cord and spring drum 57, 54, a rack bar 61 with restoring handle 62, and the denomination key 66, which controls a double armed pawl. The actuating-pinion 73 of each numbering-wheel engages with its own driving-wheel 76, Figs. IV and V with which the master setting-wheel may be brought to engage, and spring-controlled teeth 78 upon these transfer by engagement with transfer pinions 74, at the same time striking an arm which hangs loosely upon the counter-spindle 71 to bring the detent 87 into gear with the higher actuating - pinion and prevent overthrow. To zeroize the counter, the master setting-wheel is moved to the extreme right out of gear and the zero-key 101 depressed to rock the shaft 92 and swing the friction roller.97 mounted thereon into contact with the number wheels, which are themselves rotated when an external handle on the roller spindle is turned, the zero position being determined by a pin 72<a> upon each wheel striking the yoke 94.