Abstract:
A continuously moving information-bearing article carrier and a selectively actuated article handler are in peripheral velocity synchronism for exchanging information-bearing articles. In a preferred form, the carrier is a rotating cylinder having a large plurality of information-bearing articles spaced about its periphery and extending outwardly of the outer periphery for facilitating dynamic article exchanges. Peripheral velocity and positioning synchronism between the article carrier and handler is achieved by incorporating the desired synchronism characteristics into a control tachometer on the handler and maintaining the carrier tachometer linear. Such characteristics result from variable spacing between tachometer marks representing the acceleration characteristics of the article handler.
Abstract:
RECORD STORAGE APPARATUS EMPLOYING ENHANCED TRANSDUCER POSITIONING SERVOMECHANISMS A sequentially operated machine employs two positionable members, a movable center selection piston member and a movable transducer member for accessing a record storage member selected by the central piston member. Making the record storage member available to the transducer requires a predetermined time delay. Accordingly, the servomechanism powering the selecting mechanism has a high response, while a following servomechanism transporting the transducer has a low response such that cost is reduced while not adversely affecting access time to the record member.