Title:
STORAGE BARREL
Document Type and Number:
Japanese Patent JPS525326
Kind Code:
A
Abstract:
A storage drum adapted to have yarn wound thereon tangentially adjacent the rear end thereof for forming thereon a plurality of windings which advance axially toward the forward end thereof. The drum comprises a surface of revolution about the longitudinal axis thereof, which has a yarn loading section and a yarn winding accumulating section joined together at a point of inflection. The yarn loading section extends rearwardly of the point of inflection and the yarn accumulating section extends forwardly of the point of inflection. The loading section is shaped so that a tangent thereto immediately rearwardly of the point of inflection forms an angle with the drum axis whose tangent is greater than the coefficient of static friction between yarn and drum surface and so that tangents to progressively more rearward points along the loading section form progressively larger angles with the drum axis. The accumulating section is shaped so that a tangent thereto immediately forwardly of the point of inflection forms an angle with the drum axis whose tangent is less than the coefficient of dynamic friction between yarn and drum surface and so that tangents to progressively more forward points along the accumulating section form progressively smaller angles with the drum axis.
Inventors:
ROBAATO DABURIYU KUREMENSU
Application Number:
JP5337776A
Publication Date:
January 17, 1977
Filing Date:
May 12, 1976
Export Citation:
Assignee:
WESCO INDUSTRIES CORP
International Classes:
B65H75/14; B65H51/20; B65H51/22; D04B15/48; (IPC1-7): B65H75/14
Domestic Patent References:
| JP39002784A |
Foreign References:
| US3637149A | 1972-01-25 | |||
| US3782661A | 1974-01-01 |
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