Draw-roll assembly
AssigneeRieter Machine Works, Ltd.
InventorsPeter Baertschi, Kurt Wetter, Felix Graf
Life of this patent
Estimating the term…
Abstract
A draw-roll assembly is movable downwardly on guide rods from a working position into a filament take-up position. A slightly heavier counter weight connected with the draw-roll assembly by means of a cable ensures that the draw-roll assembly stays in the upper position even upon failure of a pneumatic control and also that the movement forces are limited substantially to the difference between the weights. An electro-pneumatic control controls the movement speed of the draw-roll assembly from the filament take up position into the working position.
Claims16
In combination with a draw frame for filamentary material;
- a pair of draw-roll assemblies for drawing filamentary material;
- and
- a plurality of guides for guiding one of said draw-roll assemblies from an abutment defining a working position to a filament take-up position adjacent the other of said draw-roll assemblies to permit a laying on of filamentary material.
In combination,
- a frame;
- a first draw-roll assembly for drawing filamentary threads fixedly mounted in a lower portion of said frame;
- guide means mounted on said frame;
- and
- a second draw roll assembly mounted in said guide means for movement between a raised working position and a lowered filament threading-up position whereby said threads can be easily wrapped about each said draw-roll assembly.
In combination with a draw frame for filamentary material, a guide means for guiding a first draw roll assembly between an abutment defining a working position and a threading up position adjacent to a second draw roll assembly whereby said filamentary material can be easily wrapped around both draw roll assemblies.
In combination with a draw frame for filamentary material,
- a draw-roll assembly for drawing filamentary material;
- a plurality of guides for guiding said draw-roll assembly between an abutment defining a working position and a filament take-up position;
- means for controlling the movement of said draw-roll assembly between said positions, said means including a counterweight attached to said draw-roll assembly, at least one pressure cylinder connected with counterweight for selectively raising and lowering said counterweight, and control means for activating said pressure cylinder.
In combination with a draw frame for filamentary material,
- a draw-roll assembly for drawing filamentary material;
- a plurality of guides for guiding said draw-roll assembly between an abutment defining a working position and a filament take-up position;
- a heat insulating cabinet covering said draw roll assembly,
- a connector shaft communicating with an interior of said cabinet;
- and
- a vapor suction nozzle for engaging with said shaft in said working position to exhaust vapor from said cabinet.
Dependencies are inferred from the claim text.