Browse Prior Art Database

Door Actuator for Tape Cartridge

IP.com Disclosure Number: IPCOM000094870D
Original Publication Date: 1965-Jun-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Barnard, CP: AUTHOR [+3]

Abstract

Tape cartridge 1 containing reels of magnetic tape is slidably inserted into cartridge housing 2. Cartridge 1 has a flexible closure member 3 which slides in arcuate grooves on the inner walls of 1. Connected to one end of 3 is a slidable block 5 having an outwardly protruding lug 6. As 5 slides to the right, it pulls 3 open.

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Door Actuator for Tape Cartridge

Tape cartridge 1 containing reels of magnetic tape is slidably inserted into cartridge housing 2. Cartridge 1 has a flexible closure member 3 which slides in arcuate grooves on the inner walls of 1. Connected to one end of 3 is a slidable block 5 having an outwardly protruding lug 6. As 5 slides to the right, it pulls 3 open.

Mounted beneath cartridge support surface 13 in groove 14 is horizontal shaft 7 which carries detent members 8, 9 and 10. Shaft 7 is rotatable about its longitudinal axis. Members 9 and 10 are rigidly attached to 7 while 8 is mounted to rotate about and to slide on 7. Leaf springs 11 resiliently bias the detents in an upward direction and compression spring 12 exerts a horizontal bias against 8.

As 1 is moved to the left for insertion, 8 yields downwardly, permitting 6 to pass over it. Continued movement brings 6 into contact with the right-hand side of 9, blocking forward movement of 5 and causing it to slide to the right relative to 1 as the latter's movement continues to the left. When the front end of 1 approaches the magnetic data head 4, 3 is fully open. At this point 10 is depressed by the lower edge of 1, causing 7 to rock 9 out of engagement with 6, allowing insertion of 1 to be completed without further door movement. When 1 is slid to the right for removal, 6 glides over 9 and is arrested by the left-hand edge of 8. Continued movement to the right closes 3. Spring 12 prevents 3 from slamming shut a...