A catechism of the steam engine and its various applications to mines, mills, steam navigation, railways, and agriculture (1876)
Bourne, John, civil engineer. [from old catalog] · New York, D. Appleton and company · leaf 387
o the shovel by the drum B and handle 8^and at the same time it is raised by the chains <?, o. These twomotions can be so adjusted to each other, as to give movementto the shovel to enable it to loosen and scrape up a shovelfulof earth. The handle 8 is now left free, and the shovel D israised… … POWER NECESSARY FOR THRESHING. 373 car. All these motions are performed by the aid of a steam en-gine, and are controlled by a man who stands on a platform at/. 692. Q.—Having now described the most usual and approvedforms of engines applicable to numerous miscellaneous purposesfor which a moderate…
Steam engineering · Steam-engines
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