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Access Mechanism for Magnetic Read/Write Heads

IP.com Disclosure Number: IPCOM000081511D
Original Publication Date: 1974-Jun-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Wheeler, SE: AUTHOR

Abstract

This access mechanism translates a magnetic read/write head 10 across a magnetic disk 20 utilizing a "Rolamite" roller assembly 22.

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Access Mechanism for Magnetic Read/Write Heads

This access mechanism translates a magnetic read/write head 10 across a magnetic disk 20 utilizing a "Rolamite" roller assembly 22.

"Rolamite" assembly 22 comprises two parallel fixed guide plates 24 and 26 providing facing parallel surfaces 1a and 1b. Assembly 22 also comprises a pair of rolls 2a and 2b having a thin sheet metal band 3 extending around them in S configuration, with the ends of band 3 being fixed to surfaces 1a and 1b at points 3a and 3b. Band 3 is under tension so as to lock rollers 2a and 2b against parallel guide surfaces 1a and 1b. Rollers 2a and 2b may then move against parallel guide surfaces 1a and 1b without slipping on band 3, with band 3 simply peeling away from one guide surface 1a or 1b and flattening out on the other guide surface 1a or 1b. This "Rolamite" construction is described in an article by
D. F. Wilkes entitled "Rolamite, A New Mechanism" in the magazine Mechanical Engineering, April, 1968, and in an article by Robert Diller entitled "Can Rolamite Smooth Out Your Next Electromechanical Design?" in the magazine Insulation, December, 1968, pages 27-32.

Rolls 2a and 2b are connected together by pins 8 extending through the rolls and through the legs of a yoke 7. A perforated belt 6 extends over a roller 9 rotatably mounted adjacent the upper end of plate 26 and over a sprocket 5, constituting the output element of an electric motor 4 of the stepping type. Read/write head 10 is carr...