Apparatus for maintaining a tension in an elongated continuously advanced flexible element
AssigneeStahlkontor Maschinenabau GmbH
InventorsRudolf Dreschau, Klaus Pack
Life of this patent
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Abstract
A device for maintaining a freely selectable speed-independent tension in a continuously advanced flexible element, has a double-arm rocker and respective deflecting rollers uniformly disposed on arms of the rocker with said element passing around the rollers in opposite senses. The rocker is mounted to enable pivoting about a pivot axis between the rollers and at least one counterforce member is operatively connected to the rocker to counter pivotal movement of the rocker about this axis and establishing a tension in the element which is a function of a pivotal displacement of the rocker.
Claims9
A device for maintaining a freely selectable speed-independent tension in a continuously advanced flexible element, the device comprising, between a source and a receiver of the element:
- a housing;
- a rocker having arms directed oppositely from a central rocker pivot axis;
- bearing means for mounting the rocker for pivoting on the housing about the axis;
- respective deflecting rollers uniformly disposed on the arms of the rocker with the element passing around the rollers in opposite senses;
- a pair of springs extending generally parallel to each other and each anchored at one end to the rocker at a respective location offset form the axis;
- and
- respective means at an opposite end of each spring for bracing the respective opposite end on the housing and for adjusting the respective spring force.
Dependencies are inferred from the claim text.