Device for the selective actuation of the needle selection members in needles looms
AssigneeVerdol S.A.
InventorPaul Sage
Life of this patent
Estimating the term…
Abstract
A device for the selective actuation of the needle selection members in needles looms using a perforated paper pattern, of the kind comprising memory means for recording information which corresponds to the perforations of the paper, them for controlling, as a function of this information, the members it is desired to displace is characterized in that it comprises a memory having displaceable members lockable in position, means for applying this memory to the perforated paper in order to displace selectively the said elements as a function of the perforations and means for applying it then to the selection members in such manner that the elements displace the latter in accordance with the information they have registered.
Claims9
A device for the selective actuation of the needle selection members in a needles loom using a perforated paper pattern which is advanced at a speed controlled by the operating cycle of the loom, the loom having memory means for recording information which corresponds to the perforations of the paper pattern by positioning rod members of the memory means selectively in either their neutral positions or in displaced positions as a function of this information, characterized in that the device further comprises means for applying the memory means to the advancing paper pattern during a first portion of the cycle of the loom to move the rod members to said positions;
- means responsive to a second portion of the cycle of the loom to lock the rod members in said selected positions;
- means responsive to a third portion of the cycle of the loom to remove the memory means from the paper pattern and apply the rod member to said needle selection members to actuate said needles selection members in response to the locked positions of the rod members, means responsive to a fourth portion of the cycle of the loom to unlock the rod members;
- and means operative in response to the cycle of the loom to reciprocate the memory means so that it advances with the advance of the paper pattern and at the same speed during the first and second portions of said cycle and retracts during other portions of said cycle.
The device as claimed in claim 9, wherein said means operative to reciprocate the memory means comprises cam means attached to rotate with the shaft, said memory means having a case supporting said rod members;
- guide means limiting the case to tilting motion about an axis transverse to the direction of advance of the paper pattern and to reciprocating motion toward and away from the paper pattern;
- a first lever actuated by the cam means to tilt the case;
- a second lever actuated by the cam means to reciprocate the case toward and away from the paper pattern;
- and means coupling the levers to the case.
Dependencies are inferred from the claim text.