Heddle frame levelling apparatus for a rocking lever cam drive
AssigneeS.A. des Etablissements Staubli
InventorsJean-Paul Froment, Jean-Pierre Pages
Life of this patent
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Abstract
In a weaving machine with a cam mechanism for forming the shed a heddle frame levelling apparatus includes rocking levers which are pivoted about a pin which is urged against a fixed bearing surface on the frame of the machine during weaving by elastically deformable elements. In a first embodiment the movement of the pivot pin is effected by the rotation of an eccentric bearing whereas in a second embodiment this movement is caused by a jack.
Claims10
In a weaving machine having a cam mechanism for forming a shed wherein the cam mechanism includes rocking levers connected to heddle frames, the rocking levers being supported on a pivot pin which is carried by eccentric assemblies so as to be shiftable relative to a frame portion of the machine from a first position wherein the rocking levers are engageable with cam means to a second position adjacent a stop, the improvement comprising said stop being defined by a fixed bearing surface associated with the frame portion, means for elastically urging the pivot pin against said fixed bearing surface when in said first position, and maneuvering means for controlling movement of the eccentric assemblies.
The weaving machine and cam mechanism of 9 in which said maneuvering means includes a jack having a cylinder and piston rod, means for connecting said cylinder relative to the frame portion and means for connecting said piston rod to said second end of said pivotable arm.
Dependencies are inferred from the claim text.