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Appleton's cyclopædia of drawing, designed as a textbook for the mechanic, architect, engineer, and surveyor (1866)

Worthen, William Ezra, 1819-1897, [from old catalog] ed, Appleton, firm, publishers, New York. (1866. D. Appleton & co.) [from old catalog] · New York, D. Appleton and company · leaf 179

An illustration from Appleton's cyclopædia of drawing, designed as a textbook for the mechanic, architect, engineer, and surveyor, 1866, leaf 179
140 DRAWING OF MACHINEEY. portioned to the weight it will be required to support, which will be in-versely as their distance from the centre of pressure. Fig. 228 represents the fly-wheel shaft of a stationary engine. Theparts of least diameter are the journals; their length is 1^ times the diam-… … .9 ^- Fig. 229. eter ; the centre of the shaft is enlarged to receive the hub of the fly-wheel,and for convenience in driving the keys. Shafts of this form are mostlyof wrought iron, the reduction being made by steps, as a convenience inswedging. Fig. 229 is a plan of the crank, from the wheel…

Mechanical drawing · Architectural drawing · Projection · Perspective

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