Textiles: weaving – Warp manipulation – Shedding
Patent
1986-11-05
1987-12-29
Jaudon, Henry S.
Textiles: weaving
Warp manipulation
Shedding
D03C 1300
Patent
active
047154098
ABSTRACT:
One coupling element secured to a heddle frame has a pivotally mounted bolt latch for interlocking with another coupling element connected to a drive member when the another element is inserted in an opening of the one element to couple the heddle frame with the drive member. Toothing on the bolt latch and toothing on the another coupling element come into the locking position by a toggle lever pivotally mounted on the one element. The toggle lever has a manual operating lever, and a further lever element hinged thereon and comprising a bolt-shaped part surrounded by a tensioned helical compression spring which is supported between two abutments which are constructed as hinges for connection of the lever to the manual operating lever and to the bolt latch. One abutment is fixed to the bolt, and the other abutment is slidable relative to the bolt to a limited longitudinal extent determined by stops formed by an over-sized bore in the hinge receiving a pin carried by the bolt. In the over dead-center position of the toggle lever, in which the bolt latch is urged into the locking position, a cam-shaped projection on the manual operating lever abuts against an angled end of the L-shaped bolt latch. This mutual support is also present when, as a result of wear of the toothing, the bolt latch allows itself to be pressed slightly further, and the manual operating lever modifies its pivoting end position accordingly under the action of the spring. Thereby self-adjustment is ensured and the occurrence of play between the coupling elements is prevented.
REFERENCES:
patent: 4083385 (1978-04-01), Pfarrwaller
patent: 4365653 (1982-12-01), Freisler et al.
patent: 4369815 (1983-01-01), Gehring et al.
patent: 4541459 (1985-09-01), Palau
Grob & Co. Aktiengesellschaft
Jaudon Henry S.
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