Browse Prior Art Database

Paper Roll Shaft Locking Arrangement

IP.com Disclosure Number: IPCOM000091930D
Original Publication Date: 1968-Jul-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Holovka, C: AUTHOR

Abstract

This locking arrangement permits insertion of a paper roll shaft into a hollow cardboard core. Such can be effected even if the core is dropped or for other reasons becomes quite elliptical. In A, paper roll shaft 1 is inserted into a hollow cardboard core 2 that supports a large diameter roll of paper. Longitudinally fluted cam roller 3 is rotatable in either direction relative to rack-type track 4 to lock core 2 firmly on the shaft. To enable use of hollow cores that are considerably out-of-round, flat surfaces 5 and 6 are machined on the sides of the shaft parallel to the center line of the inoperative or neutral position of roller 3 as shown in A. After shaft 1 is inserted into core 2, the latter is rotated relative to the shaft to create locking or clamping at the pressure points P shown in B.

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Paper Roll Shaft Locking Arrangement

This locking arrangement permits insertion of a paper roll shaft into a hollow cardboard core. Such can be effected even if the core is dropped or for other reasons becomes quite elliptical. In A, paper roll shaft 1 is inserted into a hollow cardboard core 2 that supports a large diameter roll of paper. Longitudinally fluted cam roller 3 is rotatable in either direction relative to rack-type track 4 to lock core 2 firmly on the shaft. To enable use of hollow cores that are considerably out-of-round, flat surfaces 5 and 6 are machined on the sides of the shaft parallel to the center line of the inoperative or neutral position of roller 3 as shown in A. After shaft 1 is inserted into core 2, the latter is rotated relative to the shaft to create locking or clamping at the pressure points P shown in B.

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