Browse Prior Art Database

Single Motor Tape Drive

IP.com Disclosure Number: IPCOM000049230D
Original Publication Date: 1982-Apr-01
Included in the Prior Art Database: 2005-Feb-09
Document File: 3 page(s) / 46K

Publishing Venue

IBM

Related People

Hu, PY: AUTHOR [+3]

Abstract

A single motor, through drive wheels and drive belts, can supply the rotary motion to the supply and take-up reels as well as activating a threading mechanism and providing rotary motion to a rotary head. Solenoids pivot a reel drive wheel into contact with the take-up reel or the supply reel according to the tape direction required. The reel drive releases a block brake from the driven reel while keeping the block brake applied to the other reel for keeping tension on the tape and also releases band brakes from both reels.

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Single Motor Tape Drive

A single motor, through drive wheels and drive belts, can supply the rotary motion to the supply and take-up reels as well as activating a threading mechanism and providing rotary motion to a rotary head. Solenoids pivot a reel drive wheel into contact with the take-up reel or the supply reel according to the tape direction required. The reel drive releases a block brake from the driven reel while keeping the block brake applied to the other reel for keeping tension on the tape and also releases band brakes from both reels.

As shown in the figure, the tape drive system includes a continuously rotating motor shaft 1 which in turn rotates s drive wheel 2 around a pivot point 3. The drive wheel 2 rotates a reel drive 4 through a belt 5. A drive arm 6 is also mounted to pivot around point 3. The reel drive 4 is journaled to the drive arm 6. The drive arm 6 has an extension 7 that is fastened to the pistons 8 and 9 of solenoids 10 and 11, respectively.

The reel drive 4 rotates in one direction and is actuated against a take-up reel 12 or a supply reel 13 depending upon which of the two solenoids is activated. The take-up reel is held against rotation by a band brake 14 which is activated by an arm 15 that pivots around point 16 when a pin 17 attached to the drive arm 6 enters into either slot 18 or 19 depending upon the solenoid actuated. Likewise, the supply reel 13 is held against rotation by a band brake 20 which is controlled by a brake arm 21. The brake arm 21 pivots around point 22 as controlled by its spring 23 and the positioning of pin 17 into either slot 18 or slot 19. Both the supply reel 13 and the take-up reel 12 also include a block brake 24 and 29, respectively. The block brake 24 is connected to an arm 25 that is pivoted around point 26 as controlled by a cam section 27. Tension spring 28 keeps the arm 25 and the block brake 24 in contact with the supply reel 13. Likewise, a block brake 29 resists the rotary motion of the take-up reel 12. The block brake 29 is fastened to an arm 30 which is...