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US 4,154,268 AGranted
Reading device, in particular for a shed-forming machine
AssigneeStaeubli Ltd.
InventorRudolf Schwarz
Life of this patent
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AssigneeStaeubli Ltd.
InventorRudolf Schwarz
Estimating the term…
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.
In a method for operating a reading device of a control machine comprising a reading means which reads a patternlike perforated, foillike pattern card and a power amplifier means which acts in direction of the movement of said reading means, from which a draw hook movable between limit positions is controlled, the improvement comprising wherein said reading means is supported in at least one part of the power amplifier means and is moved therewith, and wherein a lock member is movably supported on said power amplifier means, said lock member being moved into a position transversely with respect to the direction of movement of said power amplifier means by said reading means reading said pattern card for a perforated part or a nonperforated part, both read conditions are power-amplified and are forwarded automatically in to simultaneously effect a tilting of a correcting element, said correcting element remaining tilted in the same position until a different condition is read on said pattern card so that depending on the read pattern part said correcting element, during a movement of said power amplifier means, effects a simultaneous movement of said draw hook between the limit positions thereof.
In a reading device of a control machine, comprising a pair of operating arms, a pattern card having a plurality of reading places with at least one of a nonperforated part and a hole per reading place, a reading means for reading said pattern card, and power amplifier means which acts in direction of the movement of said reading means, the improvement comprising wherein said means is movably supported relative to said power amplifier means in a direction toward and away from said pattern card, a lock member movably mounted on said power amplifier means and movable therewith in a direction transverse of the direction of movement of said reading means between first and second positions, a pivotally supported correcting element supported separate from said power amplifier means, said correcting element having means thereon defining a pair of operating arms, a draw hook movable between first and second positions in response to a pivotal movement of said correcting element wherein said lock member engages in both of said first and second positions one of said operating arms when said power amplifier means is moved relative to said correcting element to effect a pivoting of said correcting element and the simultaneous movement of said draw hook between said first and second positions.
In a reading device of a control machine, comprising a pattern card having a plurality of reading places with at least one of a nonperforated part and a hole per reading place, a reading means for reading said pattern card, and a power amplifier means which acts in direction of the movement of said reading means, the improvement comprising wherein said reading means is movably supported relative to said power amplifier means in a direction toward and away from said pattern card, a lock member movably mounted on said power amplifier means and movable therewith in a direction transverse of the direction of movement of said reading means between first and second positions, a pivotally supported correcting element supported separate from said power amplifier means and having means thereon defining a pair of operating arms, a draw hook movable between first and second positions in response to a pivotal movement of said correcting element, wherein said lock member engages in both of said first and second positions thereof one of said operating arms when said power amplifier means is moved toward said pattern card and relative to said correcting element to effect during said movement of said power amplifier means toward said pattern card a pivoting of said correcting element and the simultaneous movement of said draw hook between said first and second positions thereof.
Dependencies are inferred from the claim text.