Browse Prior Art Database

Microfilm Storage and Retrieval System

IP.com Disclosure Number: IPCOM000073731D
Original Publication Date: 1971-Jan-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Bowman, CH: AUTHOR

Abstract

A random access microfilm chip system allows rapid retrieval of information from a large microfilm data bank. The microfilm chip storage device includes a wheel 10 rotatable about axis 12 by operation of stepping motor 14. Motor 14 drives a pinion gear 15 engaging ring gear teeth 16 on the periphery of 10, and is controlled by a digital addressing system, not shown. Wheel 10 is formed with an array of pockets around its rim portion for receiving unmounted microfilm chips, one per pocket. In order to maximize density of storage, the pockets may be defined simply by thin grooves 18, 20 cut in the central and rim portions 22, 24 of wheel 10, instead of by complete webs between the pockets. An occasional structural web, not shown, is provided to connect rim 24 to the remainder of the wheel.

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Microfilm Storage and Retrieval System

A random access microfilm chip system allows rapid retrieval of information from a large microfilm data bank. The microfilm chip storage device includes a wheel 10 rotatable about axis 12 by operation of stepping motor 14. Motor 14 drives a pinion gear 15 engaging ring gear teeth 16 on the periphery of 10, and is controlled by a digital addressing system, not shown. Wheel 10 is formed with an array of pockets around its rim portion for receiving unmounted microfilm chips, one per pocket. In order to maximize density of storage, the pockets may be defined simply by thin grooves 18, 20 cut in the central and rim portions 22, 24 of wheel 10, instead of by complete webs between the pockets. An occasional structural web, not shown, is provided to connect rim 24 to the remainder of the wheel. Operation of motor 14 brings a selected pocket in 10 into registry with a fixed reading station. This station includes a film chip ejecting blade 30, operable by a solenoid driven lever 32 to push a microfilm chip from the stored position indicated at 34 into registry with an optical reading window 36 in the read head 38 of the station. After reading has been completed, the chip is returned to storage position in wheel 10 by blade 40 operated by solenoid lever 42 as indicated.

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