Kerseymere
Encyclopedia
Kerseymere is a fine woolen cloth with a fancy twill weave. In printing
Printing press
A printing press is a device for applying pressure to an inked surface resting upon a print medium , thereby transferring the ink...

 fine work during the mid-19th century, the blankets that lay between the tympan
Tympan
In hand-operated letterpress printing, the bruzer tympan is the taut cloth or paper mounted in a frame which is placed over the sheet of paper immediately prior to lowering the platen to make the impression....

s were either fine kerseymere or superfine woolen cloth (see A Dictionary of The Art of Printing by William Savage, Burt Franklin: New York, 1841.)
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