Spring tension relieving device for negative dobby
AssigneeS.A. des Etablissements Staubli
InventorsJean-Paul Froment, Andre Fumex
Life of this patent
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Abstract
A drawing device for actuating the heddle frames of a weaving machine of the negative type including rocking levers which guide cables extending from the heddle frame to a return spring system. The rocking levers are mounted on shafts which are shiftable within elongated slots to thereby relax tension on the cables and spring system.
Claims9
In a weaving machine including a drawing device for actuation of heddle frames of weaving mechanisms of the negative type which includes for each frame at least one control cable which extends from the frame over a lever mounted to oscillate on a support shaft carried by fixed structures of the weaving mechanism to a spring system which is normally under tension, the improvement comprising, the support shaft being guided inside spaced guide slots, adjustment means extending into said guide slots, said support shaft being displaceable along said guide slots by said adjustment means to thereby release tension on the spring systems.
In a weaving machine including a drawing device for actuation of heddle frames of weaving mechanisms of the negative type which include for each frame a spring system which is normally under tension and means for connecting the spring system to the frame and wherein the means for connecting the spring system includes a rocking lever mounted to a support shaft carried by fixed structures of the weaving machine, the improvement comprising, the support shaft being guided inside spaced guide slots formed within said fixed structures, adjustment means extending into said guide slots, the support shaft being displaceable along said guide slots by said adjustment means to thereby release tension on the spring system.
Dependencies are inferred from the claim text.