4899687 A abstract a device for coating a web of material traveling around a backing roller with a flexible doctor having a foot secured in a clamping beam and a point supported by a supporting strip and with pressure adjusting mechanisms positioned above the width of the doctor and acting independently of each other on individual points on the doctor the pressure adjusting mechanisms below the supporting strip act on the doctor in another embodiment the pressure adjusting mechanisms consist of several adjacent chambers that extend over the operating width and can be independently pressurized each with an elastic wall that faces the doctor application_number US 23948188 A description with reference now to fig1 and 2 the embodiment includes a flow control system consisting of a pivoting doctor beam 1 in which a clamping beam 2 that is flexible across the web is mounted in such a way that it can be shifted toward a backing roller 3 secured in clamping beam 2 in such a way that it can be released at its foot is a doctor 4 the point 5 of doctor 4 rests against backing roller 3 below the point a supporting strip 6 engages doctor 4 and is secured to doctor beam 1 in such a way that it can move back and forth more or less parallel to clamping beam 2 supporting strip 6 extends over the operating width and the side of the strip opposite the line of support is slotted at regular intervals and is accordingly flexible to a certain extent uniformly distributed setscrews 7 engage the same side and allow manual establishment of a locally.