Loading patent…
OwnerJean-Claude Decauxinventor
Estimating the term…
The device compensates for the offset of a sheet element which is movably mounted on at least two parallel rollers which are alternately supply and receiving rollers. At least one (1) of these rollers is inclinable relative to the other and is controlled by means (17-20) for detecting the offset of the sheet element and acting on compensating means (3-12) which modify the angle of the inclinable roller. This device comprises an offset compensating member (3) which normally rotates with the inclinable roller when the sheet element is correctly centered. The rotation of the compensating member is temporarily interrupted and converted into a linear displacement by the action of at least one abutment (9) which is shifted by the detecting means when the latter detects an offset of the sheet element. The compensating means cooperates, in its linear displacement, with the profile of a cam (12) which modifies the position of one end of the inclinable roller and consequently the angle of the latter. The invention is applicable to the control of the offset of any element in the form of a sheet or band held taut on two rollers or reels.
A device for compensating for the offset of an element in the form of a sheet or band which is rollably mounted on at least two rollers which are normally parallel and are alternately supply rollers and receiving rollers, at least one of the rollers being inclinable so as to be angularly movable relative to the other roller, said device comprising means associated with the element for detecting the offset of the element, means associated with the inclinable roller for modifying the angle of the inclinable roller relative to said other roller, means connecting the compensating means to the inclinable roller and operative to normally cause the compensating means to be rotated by the inclinable roller but to displace the compensating means linearly when the compensating means is prevented from rotating, abutment means cooperative with the compensating means and movable between an inoperative position and an operative position in which operative position the abutment means prevents rotation of the compensating means, the detecting means being operatively connected to the abutment means to move the abutment means to said operative position thereof when the detecting means detects an offset of said element, and cam surface means cooperative with the compensating means when the compensating means is displaced linearly so as to change the angle of the inclinable roller relative to said other roller and thereby compensate for the offset.
Dependencies are inferred from the claim text.