Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 893
on.and during the expanding of the globe, the workman rolls thisbullion along a straight edge. The piece of glass, after the above operation, is reheated, in the blowing-furnace, and expanded bythe workman blowing through the iron pipe, until it is so far cooled as to require another heat. Whenit… … GLASS. 801 gla68 globe, by a peculiar motion of the pipe, to assume the shape shown in the figure, 3. This lastoperation is technically termed bottoming the piece. It is then removed to a framing, Fig. 2150,■where it rests on its edge on some ground charcoal and cinders a. Another workman then…
Mechanical engineering · Mechanics · Engineering
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