Abstract:
In a warehouse having horizontal rows and vertical columns of bins in which packages are stored by a positive address code controlled courier (stacker crane), different size bins vary in height and are divided into zones of small, medium and large size bins. This system is arranged to check the size of the package. Subtraction of the read code from zone boundary codes provides information indicative of the zone of arrival. And comparison of the sizing information with the zone information will either allow the action to proceed or will return the package. Shelf error is handled by providing a code for each hoist address that defines the validity of the address for the several zones of different size bins. The integrated circuits send the package back to the pickup station if the validity code indicates that there is no shelf at the hoist address. In the event of a power failure, upon restoration, the integrated circuits automatically program for a large package sizing indication.
Abstract:
A digital pulse deleter for use with digital control systems of electric motors driving work stand rolls in processing lines to afford selective adjustment of motor speeds calibrated in terms of percentages of elongation between successive work stands. The deleter can be adjusted by readily made changes in electrical interconnections to be determinative of what percentage of input pulses will and what percentage of such pulses will not be subject to deletion by selector switches. Operation of the selector switch permits selection of the increments of pulses subject to deletion that will be actually deleted with such increments being calibrated as a percentage or a per unit value of elongation or draw. The percentage of total deleter input pulses not subject to deletion is determinative of the maximum elongation or draw ratio to which the deleter will be so calibrated.