Reversible jacquard loom and reversing mechanism therefor专利检索-失速控制风能专利检索查询-专利查询网

Reversible jacquard loom and reversing mechanism therefor

阅读：534发布：2022-02-25

专利汇可以提供Reversible jacquard loom and reversing mechanism therefor专利检索，专利查询，专利分析的服务。并且A jacquard loom has a reversing mechanism which, on reversal of the loom drive in case of weft failure, causes the blades controlling the heddle-control rods to orbit backwardly (reverse sense) only until the loom is again in the open-shed or closedshed position, whereupon the blades are caused to orbit forwardly (forward sense). This apparatus has a single input connected directly with the drive and a pair of outputs, one of which is rigidly (no slip) connected to the input and is operatively connected to the card-reading device and the other of which controls the control-rod blades. The input shaft carries, in addition to the input sprocket and first-output sprocket, a rotatable element flanked by a pair of disks and defining a unidirectional lost-motion indexing clutch therewith. A pair of pins passing through the rotatable element can engage with their ends in either of the flanking disks which are themselves positively coupled (no slip or phase shift) together to rotate in opposite senses. Each disk is formed with notches having one straight and one inclined flank (or only the pins may have such flanks) and these notches only line up in the open-shed and closed-shed positions of the loom, or in at least one of these positions, so that the pins can only slide to change secondoutput rotation sense when the loom is in either of these positions.，下面是Reversible jacquard loom and reversing mechanism therefor专利的具体信息内容。

权利要求

1. A reversing apparatus for the heddle-control members of a double-stroke open-shed jacquard machine, said apparatus comprising: an element rotatable about an axis by the drive of said machine; a pair of disks flanking said element and rotatable about said axis, each of said disks being formed with at least one notch directed toward said element, said disks being coupled to said heddle-control members; at least one pin received in said element offset from said axis, said pin having a pair of ends each formed with a coupling flank and a camming flank, said camming flanks facing in opposite directions, said pin being axially slidable in said element between a position with one of said ends engaged in one of said notches and a position with the other of said ends engaged in the other of said notches, said pin being of an axial length greater than the spacing between said disks; and means pivotally coupling said disks to each other for rotation of said disks in opposite senses with said notches and said pin in alignment only in one of the open-shed and closed-shed positions of said machine.

2. The apparatus defined in claim 1 wherein said machine has a card-reading device operAble in a forward and a reverse direction, said element being positively coupled to said card-reading device.

3. The apparatus defined in claim 2 wherein said members are coupled to said disks and are rotatable in forward and reverse directions around a closed path.

4. The apparatus defined in claim 3 wherein said means includes a rotatable body, a chain drive connecting said body at one side of said disks, and a gear drive connecting said body at its other side to the other of said disks.

5. The apparatus defined in claim 3, further comprising spring means for urging said pin into a position with both ends projecting from said element.

6. The apparatus defined in claim 5 wherein said element is elongated and extends transverse to said axis.

7. The apparatus defined in claim 6 wherein said element has one such pin at each of its ends, each of said disks being formed with two such notches.

8. A jacquard machine periodically displaceable between an open-shed position and a closed-shed position and comprising: a reversible drive; a plurality of heddle control members; a plurality of elements engageable with said members and displaceable in a forward sense and in a reverse sense around a continuous closed path; means associated with said rods for advancing a succession of program cards through a reading station in a forward and a reverse direction; reversing means having an input connected to said drive and a first output connected to the card-advancing means for operating same in said forward direction on forward operation of said drive and in said reverse direction on reverse operation of said drive, and a second output connected to said elements for forward displacement of same on forward operation of said drive; and lost-motion means for displacing said elements in said forward sense on reverse operation of said drive only after displacement of said machine into one of said positions, and for displacing said elements in said reverse sense on reverse operation of said drive and only prior to displacement of said machine into one of said positions.

9. The machine defined in claim 8 wherein said reversing means includes a body connected to said drive and rotatable thereby about an axis, said body being operatively connected to said drive and to said card-advancing means, said reversing means including: a pair of disks flanking said body and each formed with at least one notch directed toward said body, said disks being coupled to said elements; at least one pin received in said body offset from said axis, said pin having a pair of ends each formed with a coupling flank and a camming flank, said camming flanks facing in opposite directions, said pin being axially slidable in said body between a position with one of said ends engaged in one of said notches and a position with the other of said ends engaged in the other of said notches; and means positively coupling said disks to each other for rotation of said disks in opposite senses with said notches and said pin in alignment only in said open-shed and closed-shed positions of said machine.

10. The machine defined in claim 9 wherein said means coupling said disks includes a rotatable connecting member, a chain drive connected between one side of said connecting member and one of said disks, and a gear drive between the other side of said connecting member and the other of said disks.

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Reversible jacquard loom and reversing mechanism therefor

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