Browse Prior Art Database

Design Concept of a Dual-Stack Bin in a Storage Library

IP.com Disclosure Number: IPCOM000111488D
Original Publication Date: 1994-Feb-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Dimitri, KE: AUTHOR [+2]

Abstract

This is a design implementation concept of dual-stacking cartridges in a library storage bin, for doubling the storage library capacity.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 66% of the total text.

Design Concept of a Dual-Stack Bin in a Storage Library

      This is a design implementation concept of dual-stacking
cartridges in a library storage bin, for doubling the storage library
capacity.

      The design concept implementaton of a dual-stack cartridge in a
storage library is depicted in the Figure.

      The extension springs (5) on both sides of the cartridges (1
and 2) are connected to a strap (6).  This strap provides constant
force to the cartridge/s so that when the picker fingers (4) open up
the spring retention (3) that is molded in the storage bin walls,
cartridge (1) will slide into the picker and is retrieved for an
exchange or a drive mount.  When the picker retrieves cartridge (1),
the second cartridge (2) will slide and occupy the first cartridge
space.

      A compression spring can be used instead of the extension
springs (5), but this implementation occupies more of the library
real estate.  These extension springs should be housed in a plastic
tubing in order to avoid bulging.

      To improve the second cartridge retrieval access time, a
double-gripper picker assembly mechanism should be used.  When
cartridge (2) is required for a mount, one of the grippers will
retrieve the first cartridge (1) and the other gripper will retrieve
the second cartridge (2), then the first cartridge is inserted back
into the dual-stack bin and cartridge (2) will go to complete the
drive mount command.  The most-used access cartridges s...