Textiles: fiber preparation – Working – Carding
Patent
1987-03-12
1989-08-22
Rimrodt, Louis K.
Textiles: fiber preparation
Working
Carding
19106R, D01G 1526
Patent
active
048582760
ABSTRACT:
A carding machine is provided with two doffer units. Each doffer unit comprises a doffer roller and an intermediate roller coordinated thereto, which rollers are shiftable into two different operating positions. In a first operating position, the intermediated roller is out of operation and the doffer roller works in a usual manner in combination with the main cylinder. In the second operating position the doffer roller is out of operational contact with the main cylinder and the intermediate roller, which has the same direction of rotation as the main cylinder, is positioned so as to transfer the fibers from the main cylinder to the doffer roller. The fiber fleeces leaving each of the doffer units may be combined to form a compound fiber fleece. In order to form a thin single layer fiber fleece, one of the intermediate rollers in said second operating position is driven with the speed of rotation such that its circumferential speed is lower than the circumferential speed of the coordinated doffer roller, thus preventing the transfer of fibers from the main cylinder to the doffer roller.
REFERENCES:
patent: 4651386 (1987-03-01), Frosch
Dudek Wolfram
Frosch Werner
Hollingsworth GmbH
Rimrodt Louis K.
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