Apparatus and methods for crimping textile threads
DCFirst Claim
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1. A thread-crimping machine comprising:
- a. a first drive roll (i) configured for rotation about an axis and (ii) having means for defining a thread entrance into the machine, the thread entrance-defining means comprising a circumferentially grooved drive face oriented perpendicular to the axis; and
b. a second drive roll (i) paired with the first drive roll and (ii) having an ungrooved drive face.
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Abstract
Thread-crimping machines with enhanced throughput are detailed. One or more drive rolls forming parts of the machines may be grooved to group centrally the entering threads without materially adversely impacting driving and crimping operations of the machines. Thread-focusing components also may be employed upstream of the inlet areas.
27 Citations
15 Claims
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1. A thread-crimping machine comprising:
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a. a first drive roll (i) configured for rotation about an axis and (ii) having means for defining a thread entrance into the machine, the thread entrance-defining means comprising a circumferentially grooved drive face oriented perpendicular to the axis; and b. a second drive roll (i) paired with the first drive roll and (ii) having an ungrooved drive face. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A thread-crimping machine comprising:
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a. a drive roll defining an entrance for thread into the machine and having a circumferentially grooved drive face; and b. an eyelet; and in which (a) the groove in the drive face has a width, (b) the eyelet has a diameter equal to or less than the width of the groove, and (c) the thread encounters the eyelet before encountering the entrance. - View Dependent Claims (10, 11)
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12. A textile thread-crimping machine comprising:
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a. a chamber into which textile thread may enter; b. means for driving the textile thread into the chamber, the driving means comprising paired first and second rolls, the first roll configured for rotation about an axis and having a centrally circumferentially grooved drive face (i) oriented perpendicular to the axis and (ii) receiving the textile thread in the groove and the second roll having an ungrooved drive face; and c. means, positioned upstream of the driving means and having diameter equal to or less than the width of the groove, for focusing the textile thread toward the groove of the drive face.
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13. A method of crimping thread comprising:
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a. providing paired first and second drive rolls for the thread, the first drive roll (i) configured for rotation about an axis and (ii) having a drive face having a circumferential groove therein perpendicular to the axis and the second drive roll having an ungrooved drive face; b. passing the thread through the groove; and c. crimping the thread. - View Dependent Claims (14, 15)
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Specification