Apparatus for coating cylinders with urethane

Claim 1

APPARATUS FOR COATING A CYLINDER WITH URETHANE OR LIKE MATERIAL COMPRISING, A FRAME, A PAIR OF CYLINDER SUPPORTING SPINDLES ON THE FRAME ON A GENERALLY HORIZONTAL AXIS; MEANS FOR DRIVING ONE OF SAID SPINDLES AT A RELATIVELY SLOW RATE TO ROTATE A CYLINDER SUPPORTED THEREON; ONE OF SAID SPINDLES BEING AXIALLY ADJUSTABLE TO ACCOMMODATE CYLINDERS OF DIFFERENT LENGTHS; HOPPER MEANS FOR CONTINUOUSLY APLYING COATING MATERIAL AT A CONTROLLED ARTE TO SUBSTANTIALLY THE ENTIRE LENGTH OF THE CYLINDER; SAID HOPPER BEING RADIALLY MOVABLE WITH RESPECT TO SAID CYLINDER TO THEREBY ACCOMMODATE CYLINDERS OF DIFFERENT DIAMETERS; THE HOPPER OUTLET BEING JUXTAPOSED TO AND ABOVE THE CYLINDER AND COMPRISING A MATERIAL FEED SLOT TO WHICH IS SUBSTANTIALLY AS LONG AS THE LONGEST CYLINDER WHICH CAN BE COATED IN THE APPARATUS; MEANS FOR SELECTIVELY RESTRAINING THE LENGTH OF THE SLOT TO COINCIDE WITH THE LENGTH OF THE CYLINDER; A COATING MATERIAL GUIDE COEXTENSIVE WITH THE SIDE OF SAID SLOT TOWARDS WHICH THE CYLINDER TO BE COATED FIRST APPROACHES; SAID GUIDE EXTENDING TO THE CYLINDER SURFACE AND EXTENDING IN THE DIRECTION OF CYLINDER ROTATION; A DOCTOR BLADE ON THE FRAME FOR CONTINUOUSLY SMOOTHING THE COATING MATERIAL ALONG THE ENTIRE LENGTH OF THE CYLINDER AS IT IS APPLIED; A PRESSURE ROLLER ON THE FRAME FOR CONTINUOUSLY COMPRESSING THE SMOOTHED COAT OF MATERIAL ON THE ROTATING CYLINDER; SAID BLADE AND ROLLER BEING EACH MOUNTED FOR MOVEMENT WHICH IS GENERALLY RADIAL WITH RESPECT TO THE CYLINDER; AND MEANS TOEFFECT RADIAL MOVEMENTS OF THE BLADE AND ROLLER.