Flexible or portable closure – partition – or panel – Roll type – Shiftable position roll
Patent
1983-12-27
1986-11-18
Foss, J. Franklin
Flexible or portable closure, partition, or panel
Roll type
Shiftable position roll
160 84R, 160171, A47H 100
Patent
active
046230122
ABSTRACT:
A capstan based system for pulling and accumulating the pull-cords used to lift hanging window coverings from their bottoms. A cylindrical capstan is supported in bearings so that it is free to rotate and move axially. A splined connection to a holding device permits controlled rotation and locking of the capstan. Each of one or more cords is attached to the capstan by means of a clip which can be easily positioned to adjust the position and length of its cord. As the capstan is turned, the cords wind onto the capstan in a single layer due to the camming action of a specially configured camming surface. The capstan begins to move laterally when sufficient friction has developed between the capstan and the cord which has been wound onto it. This provides space for the cord to wind onto the capstan in a single layer. During unwinding of the cord, a guiding surface, over which the cord moves, pulls the capstan back toward its original position. The camming and guiding surfaces can be made symmetric so that bi-directional operation of the system is possible.
REFERENCES:
patent: 1068306 (1913-07-01), Boughton
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patent: 2250106 (1941-07-01), Lorentzen
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patent: 3487875 (1970-01-01), Shukat et al.
Nisenson Jules
Rude Edward T.
Waine Martin
Foss J. Franklin
General Clutch Corporation
Purol David M.
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