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Show OL APPLIANCE AN METHOD 13 or needing to be displaced. Also, they should be supple enough t adapt themselves to the work of the coucher, every intermediate point. As the felts have to resist the reiterate efforts of the coucher and the press, it is necessary that the warp o these cloths should be very strong and therefore made of combe and wellwisted wool. And as they should be clean and quickl absorb and give up again a certain amount of water, their wef should be of carded wool quite loosely spun and woven in abou the same manner as light cloth. It results from this that the wef abundantly fills the stuff and covers the warp in such a way tha texture is not marked upon the paper, which would injure it grain by the irregular impression of an uncovered warp and weft as is often observed in establishments where felts not woven upo these principles are used, and which does not denote a great dea of talent on the part of the papermaker. If the material were to closely woven, like ordinary. cloths, or even the finest Kinds, i would not absorb the water cnough to enable the sheets to adhere and assume a certain consistency. It is for this reason that Carcassonne cloths are very well adapted to this purpose, and that thos of Louviers, of which the texture is very close, would not take th leaves of paper couched upon them in experiments several time repeated, because the water could not sufficiently penetrate them It is very essential that the warp of the stuff intended to be mad into felts, should be strong and tough, so that they may be of goo service, and wear well. For pressing the water from the piles of paper and feltsa woode screw press such as s portrayed by Jost Amman in 1568 and Geor Andreac Bickler in 1662 was employed in the old mills. As thes presses had to yield an immense pressure they were massive an cumbersome, and constituted one of the most expensive appliance of the old paper mills. After the post had been placed under th Digital Imag © 2004 University of Utah. All rights reserved |