Browse Prior Art Database

Roller Engagement Slip Clutch Mechanism

IP.com Disclosure Number: IPCOM000043528D
Original Publication Date: 1984-Sep-01
Included in the Prior Art Database: 2005-Feb-04
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Alexander, DE: AUTHOR [+3]

Abstract

A pivoting document feed roller mechanism has an energy-storing, anti- backlash torsional friction clutch for engaging or disengaging the drive roller with a paper form depending upon the direction of rotation of a primary drive motor. In the figure, a foam roller 1 rotates with a drive shaft 7 driven by a motor (not shown). The surface of the foam roller 1 rides against the undersurface 4 of a link mechanism 9 and causes the link to rotate in the direction of arrow 5 depending upon the direction of rotation of the shaft 7. This rocks the mechanism 9 back and forth as the drive motor operates the drive shaft 7 and will cause the paper feed roll 2 to engage the paper 6 if the shaft 7 drives counterclockwise, as shown, and will disengage the drive roller 2 from paper 6 if the shaft drives clockwise in the figure.

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Roller Engagement Slip Clutch Mechanism

A pivoting document feed roller mechanism has an energy-storing, anti- backlash torsional friction clutch for engaging or disengaging the drive roller with a paper form depending upon the direction of rotation of a primary drive motor. In the figure, a foam roller 1 rotates with a drive shaft 7 driven by a motor (not shown). The surface of the foam roller 1 rides against the undersurface 4 of a link mechanism 9 and causes the link to rotate in the direction of arrow 5 depending upon the direction of rotation of the shaft 7. This rocks the mechanism 9 back and forth as the drive motor operates the drive shaft 7 and will cause the paper feed roll 2 to engage the paper 6 if the shaft 7 drives counterclockwise, as shown, and will disengage the drive roller 2 from paper 6 if the shaft drives clockwise in the figure. The paper feed roller 2 has a shaft 8 journaled in the link mechanism 9 which is integrally formed with the base of the link mechanism 3. The base 3 can be supported on a bearing (not shown) mounted on shaft 7 to allow it to rotate freely on the shaft. Because the foam roller 1 is of a compressible nature, it will store energy as shaft 7 is driven. When the drive motor stops driving shaft 7, motor detent torque will keep the shaft from backing up. The foam, having been twisted slightly in the direction opposed to rotation, will exert a restoring force against the linkage mechanism 3 and 9, tending to maintain contact...