. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . available for other mobile or stationary work. It ib estimated 640 POTATO-DIGGER. at 70 horse-power. It performs the duty of forty actual horses in pulling, besides its self-propulsion. Driving-wheels 8 ft. x 28 in.; steering-wheel 5ft. xl4in.; capacity of water-tank 500 gallons; of fuel-boxes lbs. of coal. The boiler is a combination of the uprightand horizontal types, with a working pressure of 150 lbs. per
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . available for other mobile or stationary work. It ib estimated 640 POTATO-DIGGER. at 70 horse-power. It performs the duty of forty actual horses in pulling, besides its self-propulsion. Driving-wheels 8 ft. x 28 in.; steering-wheel 5ft. xl4in.; capacity of water-tank 500 gallons; of fuel-boxes lbs. of coal. The boiler is a combination of the uprightand horizontal types, with a working pressure of 150 lbs. per sq. in., driving twin engineshaving piston valves. It consumes about 250 lbs. of coal per hour. Wood may be used forfuel if desired It has two speeds, the plowing speed of about 3 miles, and travelling speedof 5 miles per hour. Fig. 11 illustrates Deercis arrangeniv^nt of steam-operated plows with anordinary farm traction engine, drawing a gang of five plows; duty, 1-| acres of land per horn-wit h engine geared to make a speed of 2^ miles per hour, cutting 14-in. furrows; or lA acresof land per hour if cutting l2-in. furrows. If the steering wheel of the engine is upon the. Fio. 11.—Traction engine and plows. right-hand side, right-hand plows are reciuisite (and vice verxa). to give the operator an unob-structed view of the work and enable him to preserve a uniform land. When once .set, theplows require no attention for depth and land, but are thrown out and in by one lever at theends of furrows. The outfit requires two attendants, besides a boy and team to supply fueland water. The land should be fairly free from obstructions and in condition for this subject it may be stated that steam-plowing has passed the experimental stage in theUnited States, but is still in its early period of application. Economy and practicability aredemonstrated. The introduction, though a fact, is not yet very general; but it is a merequestion of time when the plowing of large areas wil
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
