. Catalogue of agricultural and horticultural implements ... . Fig. 47. Machines to work pumps are generally made stationary, ami on a more simple plan than such as are movable. I^he circle for a horse to travel in, to work a power to , ought to be twenty-five feet diameter, and a horse will pass round on an average about three times a minute. In order to get twenty-five revolutions to the crank, the large wheel must be eight times the diameter of the small one, or eight feet to one foot, if of cast-iron. But if made on the plan represented in cut (fig. 47), the large wheel may be ma
. Catalogue of agricultural and horticultural implements ... . Fig. 47. Machines to work pumps are generally made stationary, ami on a more simple plan than such as are movable. I^he circle for a horse to travel in, to work a power to , ought to be twenty-five feet diameter, and a horse will pass round on an average about three times a minute. In order to get twenty-five revolutions to the crank, the large wheel must be eight times the diameter of the small one, or eight feet to one foot, if of cast-iron. But if made on the plan represented in cut (fig. 47), the large wheel may be made of wood with iron segments. In that case it would be well to make the large wheel twelve feet, and the pinions eighteen inches, as the friction is less when the wheels are Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Allen, A. B. & Co. [from old catalog]. New-York
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Keywords: ., bookcentury1800, bookdecade1850, bookpublishernewyo, bookyear1851
