Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 273
of this art, will be therefore noticed. Each complete set of types consists of fivealphabets, A, a, a, A, a, besides many other characters, in all about two hundred, and which are re-quired to be most strictly alike in every respect, except in device and width; the width is the greatestfor the W… … If the moulds for the rectangular shafts of the types were made as in Figs. 802 or 803, the usualforms of square moulds, they would not admit of alteration in width, as shifting a, Fig. 802, would pro-duce no change, and Fig. 803 would thereby produce the form b. The mould which is used, is made…
Mechanical engineering
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