Harper's boating book for boys; a guide to motor boating, sailing, canoeing and rowing (1912)
Davis, Charles G. (Charles Gerard), 1870-1959, ed · New York, London, Harper & Brothers · leaf 287
ss the turning of the shaft causes heat, which willthin the grease. But with oil-cups one has to be contin-ually on the watch to see that they are open when the en-gine is running and closed when it is not. So many peoplehave forgotten to close or open these cups, and so manyengines have been…
Boats and boating
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