Method of coating a cylindrical metal element

Claim 1

THE METHOD OF COATING A RELATIVELY HEAVY CYLINDRICAL METAL ELEMENT WHILE HEATED TO A HIGH TEMPERATURE WITH A LAYER OF GLASS-LIKE MATERIAL HAVING A RELATIVELY WIDE RANGE OF MELTING TEMPERATURE BELOW BUT APPROACHING THE TEMPERATURE TO WHICH THE CYLINDRICAL ELEMENT IS HEATED, COMPRISING THE STEPS: SPREADING A SUBSTANTIALLY CONTINUOUS LAYER OF SUCH GLASS-LIKE MATERIAL IN LOOSE PARTICULATE FORM ON A FIXED SHEET OF YIELDABLE HEAT RESISTANT MATERIAL DISPOSED ON A SATIONARY SURFACE OVER AN AREA OF SAID SURFACE HAVING A LENGTH WHICH IS LONGER THAN THE CIRCUMFERENCE OF THE CYLINDRICAL ELEMENT AND A WIDTH AT LEAST EQUAL TO THE LENGTH OF THE CYLINDRICAL ELEMENT; AND ROLLING THE HEATED CYLINDRICAL ELEMENT OVER THE LAYER OF LOOSE PARTICULATE MATERIAL TO PICK UP LOOSE PARTICULATE MATERIAL FROM THE SHEET ONTO THE EXTERNAL CIRCUMFERENTIAL SURFACE OF THE HEATED CYLINDRICAL ELEMENT; YIELDABILITY OF THE SHEET TENDING TO EFFECT ARCUATE CONTACT OF BETWEEN THE LAYER OF MATERIAL AND THE CYLINDRICAL ELEMENT DURING ITS TRAVEL THEREOVER, THE LENGTH OF THE LAYER MATERIAL BEING COORDINATED WITH THE TEMPERATURE OF THE CYLINDRICAL ELEMENT SO THAT THE INITIAL COATING OF PARTICULATE MATERIAL IS MELTED SUFFICIENTLY TO PICK UP ADDITIONAL PARTICULATE MATERIAL TO BUILD UP THE THICKNESS OF THE COATING TO THE DESIRED VALUE; AND THE LENGTH OF TRAVEL OF TE CYLINDRICAL ELEMENT BEING SUFFICIENT TO MELT THE PICKED UP MATERIAL TO A SUBSTANTIALLY CONTINUOUS UNIFORM VISCOUS LAYER ON THE CIRCUMFERENTIAL SURFACE OF THE CYLINDRICAL ELEMENT.

Claim 2

THE METHOD OF COATING A RELATIVELY HEAVY CYLINDRICAL METAL ELEMENT WHILE HEATED TO A HIGH TEMPERATURE WITH A LAYER OF GLASS-LIKE MATERIAL HAVING A RELATIVELY WIDE RANGE OF MELTING TEMPERATURE BELOW BUT APPROACHING THE TEMPERATURE TO WHICH THE CYLINDRICAL ELEMENT IS HEATED, COMPRISING THE STEPS: SPREADING A SUBSTANTIALLY CONTINUOUS LAYER OF SUCH GLASS-LIKE MATERIAL IN LOOSE PARTICULATE FORM ON A FIXED SHEET OF YIELDABLE HEAT RESISTANT MATERIAL DISPOSED ON A SATIONARY SURFACE OVER AN AREA OF SAID SURFACE HAVING A LENGTH WHICH IS LONGER THAN THE CIRCUMFERENCE OF THE CYLINDRICAL ELEMENT AND A WIDTH AT LEAST EQUAL TO THE LENGTH OF THE CYLINDRICAL ELEMENT; AND ROLLING THE HEATED CYLINDRICAL ELEMENT OVER THE LAYER OF LOOSE PARTICULATE MATERIAL TO PICK UP LOOSE PARTICULATE MATERIAL FROM THE SHEET ONTO THE EXTERNAL CIRCUMFERENTIAL SURFACE OF THE HEATED CYLINDRICAL ELEMENT; YIELDABILITY OF THE SHEET TENDING TO EFFECT ARCUATE CONTACT OF BETWEEN THE LAYER OF MATERIAL AND THE CYLINDRICAL ELEMENT DURING ITS TRAVEL THEREOVER, THE LENGTH OF THE LAYER MATERIAL BEING COORDINATED WITH THE TEMPERATURE OF THE CYLINDRICAL ELEMENT SO THAT THE INITIAL COATING OF PARTICULATE MATERIAL IS MELTED SUFFICIENTLY TO PICK UP ADDITIONAL PARTICULATE MATERIAL TO BUILD UP THE THICKNESS OF THE COATING TO THE DESIRED VALUE; AND THE LENGTH OF TRAVEL OF TE CYLINDRICAL ELEMENT BEING SUFFICIENT TO MELT THE PICKED UP MATERIAL TO A SUBSTANTIALLY CONTINUOUS UNIFORM VISCOUS LAYER ON THE CIRCUMFERENTIAL SURFACE OF THE CYLINDRICAL ELEMENT.