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Drive Band Pulley Attachment for Magnetic Head

IP.com Disclosure Number: IPCOM000083269D
Original Publication Date: 1975-Apr-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Bailey, EL: AUTHOR

Abstract

A flexible steel band 10 carrying a magnetic head 12 is fixed with respect to a drive roll 14 by a pin 16 fixed to and extending outwardly from roll 14. pin 16 passes through a hole 18 only slightly larger than pin 16 in each end of band 10, so that attachment screws 20 extending through band 10 into roll 14 do not cause nicks or scratches to band 10.

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Drive Band Pulley Attachment for Magnetic Head

A flexible steel band 10 carrying a magnetic head 12 is fixed with respect to a drive roll 14 by a pin 16 fixed to and extending outwardly from roll 14. pin 16 passes through a hole 18 only slightly larger than pin 16 in each end of band 10, so that attachment screws 20 extending through band 10 into roll 14 do not cause nicks or scratches to band 10.

Roll 14 is fixed on the output shaft 22 of a motor 24 of the electrical stepper type. Band 10 is in the form of a loop and extends around roll 26 disposed on the end of a cantilever leaf spring 28, which keeps a predetermined tension on band 10 between rolls 14 and 26.

Head 12 includes magnetic transducer 30 located in close proximity to the surface of a magnetic disk 32 that is rotatable along with a drive shaft 34. Motor 24 moves head 12 by roll 14 and band 10, so that transducer 30 moves radially across the surface of disk 32 for a reading or writing action by the transducer 30.

Each end of the band 10 is provided with a hole 18 which extends over pin 16 for attaching the band 10 to roll 24. Screws 20 extend through a clamp 36 which overlies the ends of band 10, and extend through holes 38 in the band into the roll 24 for holding the band ends on pin 16.

Holes 18 are closely tolerant with respect to the diameter of pin 16 and holes 38 are oversize with respect to the diameter of screws 20 passing through them. Oversize holes 38 are positioned accurately by pinholes 1...