Patent GB-191315291-A (GB)
Inventor: BANNEHR LEONARD WILLIAM
Filed: 1912-05-09
Granted: 1913-08-11
Abstract: 15,291. Bannehr, L. W., Dolton, J. H., Gilbert, J. B., and Watson, G. May 9, 1912. Machines for summing and subtracting positive and negative items; error - keys etc.; transfer mechanism.-Relates to the totalizing- counter of machines for summing series of corresponding gross and tare values, and computing and summing the net values for each pair of values, of the type described in Specification 11,076/12, and also to the mechanism necessary for transferring between the net item printing or representing members when a tare digit exceeds the corresponding gross digit. The apparatus is described as applied to the avoirdupois system. Fig. 2 shows the transfer parts for the net members in tripped position. Manually-adjusted net setting-wheels c engage, for the purpose of transferring, with pinions 202, the transfer-tooth 203 of which is adapted to displace a spring-controlled projecting member 204 upon a pivoted carrier 198, which is thereby rocked so as to bring a transfer-pawl 196 into the path of transfer operating-tappets 195. These tappets are in staggered arrangement upon a shaft 187 which is rotated subsequently by the main operating-mechanism, whereupon any such tripped transfer-pawls are restored, together with their carriers 198, to normal position, and move the next higher wheel through a unit during return. The positions of the pawl-carrier are defined by a spring detent as shown. If, in the course of setting, one of the wheels c is moved accidentally beyond the desired position, thereby tripping corresponding transfer parts, upon setting the wheel back to the correct position, an additional correcting-tooth 201, carried by the pinion in a path parallel to that of the transfer-pinion, is adapted to strike and thereby restore to normal position a projecting extension of the transfer-pawl carrier 198. In this way, the projecting-member 204 upon the carrier is also reset. The transfer mechanism for the numeralbearing totalizing-counter is of similar construction, but without provision for correcting errors. Zeroizing-mechanism.-The totalizing-counter is composed of numeral drums in three sections, corresponding to gross, tare, and net, and mounted upon a common spindle 213, Fig. 7, carried by a frame consisting of longitudinal outer bars 212 and end pieces 209. The numeral drums have hollow bosses 225 fitting the spindle and provided with a slot for the projection inwards of the point of a spring-controlled leverpawl 220 which is pivoted to the drum. When the drums are at zero position, a stud 222 upon the other end of the lever-pawl is pressed inwards hy a stationary hump 224 upon a transverse plate 223 secured to the lengthways outer bars 212. The counting-drum spindle 213 is provided with a milled knob for manual rotation, and has a stud 219 for each drum, whereby, upon rotation of the spindle, the pawls are engaged and the drums rotated until the pawls are disengaged by the projecting humps. During the zeroizing-movement, the transfer teeth engage the projecting members 204 while moving in the opposite direction, and in order to prevent tripling of the transfer parts, the rear edge of each transfer tooth is bevelled, and the projecting member 204 is in the form of a blade spring applied to the face of the carrier. whereby lateral displacement thereof takes place without tripping.