Mathematics Practically Applied To The Useful And Fine Arts By Baron C D Adapted To The State Of The Arts In England By G Birkbeck Geometry Of The Arts PDF Download

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1854 edition. Excerpt: ...we can construct cylinders, and conversely, with cylinders we can construct or make planes. Application of cylinders in husbandry.--By means of a cylinder, made to roll on a road, recently constructed or repaired, on a grass plat, or on a field lately ploughed up, the projecting parts are flattened down to a common level, and the earth is thus smoothed into a plane surface. Pastry cooks use a piece of wood, which is generally of the figure of a cylinder, and called a roller, to spread out their paste, which is done by rolling it, pressing on it, and pushing it with both hands. Thus, the paste is flattened and transformed into thin leaves, terminated above and below by plane surfaces. Combination of cylinders--Flattening rollers.--In place of using only a single cylinder to produce plane surfaces, it is found more advantageous to employ two combined 144 FLATTENING CYLINDERS. cylinders, the axes of which are parallel. Let AB, ab, fig. 15, pl. 8, be the axes of the two cylinders so placed, that of themselves they neither approach to, nor separate from each other, but may be made to do so to any degree, it is the pleasure of the workman. The two axes being placed parallel to each other, and the cylinders being made as true as possible, they are at the same distance from each other, at every point. If we now cause a plate of metal, or any other substance which can be flattened to pass between these two cylinders, it will be reduced to the thickness of the shortest distance, whatever that may be between the two cylinders. After having caused the metal to pass once between the cylinders, if they are made to approach each other a little, and the plate be again made to pass between them, it will be reduced in thickness by a quantity equal to the...