Device for increasing the specific weight of fiber material in a carding machine
AssigneeTrutzschler GmbH & Co. KG
InventorsFerdinand Leifeld, Bernhard Rübenach
Life of this patent
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Abstract
A carding machine includes a main carding cylinder and a doffer to which fiber material is transferred from the main carding cylinder and a fiber removing device positioned downstream of the doffer as viewed in an advancing direction of the fiber material through the carding machine. A gathering device including at least one gathering roll is disposed downstream of the doffer for effecting a negative draft on the fiber material between the doffer and the gathering roll.
Claims30
In a carding machine including a main carding cylinder, a doffer to which fiber material is transferred from the main carding cylinder and a fiber removing device positioned downstream of the doffer as viewed in an advancing direction of the fiber material through the carding machine;
- the improvement comprising a gathering device including at least one gathering roll disposed between said doffer and said fiber removing device for effecting a negative draft on the fiber material between said doffer and said gathering roll.
In a carding machine including a main carding cylinder, a doffer to which fiber material is transferred from the main carding cylinder and a fiber removing device positioned downstream of the doffer as viewed in an advancing direction of the fiber material through the carding machine;
- the improvement comprising a gathering device including first and second gathering rolls disposed downstream of said doffer for effecting a negative draft on the fiber material between said doffer and said first gathering roll and between said doffer and said second gathering roll.
In a carding machine including a main carding cylinder, a doffer to which fiber material is transferred from the main carding cylinder and a fiber removing device positioned downstream of the doffer as viewed in an advancing direction of the fiber material through the carding machine;
- the improvement comprising
- (a) means for driving said doffer at a first speed;
- (b) a first gathering roll disposed downstream of said doffer;
- (c) means for driving said first gathering roll at a second speed less than said first speed for effecting a negative draft on the fiber material between said doffer and said first gathering roll;
- (d) a second gathering roll disposed downstream of and cooperating with said first gathering roll;
- and
- (e) means for driving said second gathering roll at a third speed less than said second speed for effecting a negative draft on the fiber material between said doffer and said second gathering roll.
Dependencies are inferred from the claim text.