Textiles: weaving – Warp manipulation – Shedding
Patent
1977-01-26
1979-05-15
Jaudon, Henry
Textiles: weaving
Warp manipulation
Shedding
139331, D03C 100
Patent
active
041542681
ABSTRACT:
A method for controlling the heddle movement in a shed-forming machine and apparatus for performing the method. Reading needles are moved into and out of engagement with a pattern card having perforated and nonperforated portions therein actively cooperating with the needles which are adapted to move toward and away therefrom. Power amplifying structure is provided for converting the control operations noted by the reading needles into mechanical movements effecting selected control of the heddles dependent upon the position of the reading needle relative to the pattern card. A lock member is movably supported on a bar and its movement is controlled by whether the reading needle is received into a perforated portion of the pattern card or whether it engages a nonperforated portion of the pattern card. A shifting of the locking member will result in a selected and simultaneous control of a correcting element to either lift a draw hook or lower same into and out of engagement with a draw knife.
REFERENCES:
patent: 748028 (1903-12-01), Szczepanik
patent: 2085459 (1937-06-01), Wiget
patent: 3665972 (1972-05-01), Hoenig
Jaudon Henry
Staeubli Ltd.
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