The Scientific American reference book; a compendium of useful information, containing the complete census of the United States by counties ... patent and copyright laws ... forms for patents, caveats, assignments, and licenses ... etc (1892)
New York, Munn · leaf 120
118 HOW TO COMPUTE HORSE-POWER. HORSE-POWEB, When Watt began-to introduce his steam-engines hewished to be able to state their power as compared withthat of horses, which were then generally employed fordriving mills. He accordingly made a series of experiments,which led him to the conclusion that…
Patents
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