Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . orks. The massis taken out below, ]nit in baskets, and process is repeated. The details of the opera-tion are probablj- almost identical with those inrogue .3,000 years ago. In China, the [lestle ami mortar (;/) are used inreducing to powder the seeds of the oil-bearing tea-plant. The meal is boiled in bags and pressed toyield the oil. The lever is t


Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . orks. The massis taken out below, ]nit in baskets, and process is repeated. The details of the opera-tion are probablj- almost identical with those inrogue .3,000 years ago. In China, the [lestle ami mortar (;/) are used inreducing to powder the seeds of the oil-bearing tea-plant. The meal is boiled in bags and pressed toyield the oil. The lever is tripped by the cogs ofthe sprocket-wheel, ami falls by gravity. c shows the press used in China in crushing theseeds of the tallow-tree. The weighted wheel is sus-pended by a rod from a beam, and is oscillated toand fro by the workman, traveling iipon the seedswhieli are placed in the trough below. The oil pro-cured from the bruised seeds by heat and pressure isadded to vegetable oil and wa.\ to the required con-sistence for candles. OIL-OF-BRICK. 1554 OIL-PRESS. A (Fig. 3382) illustnitcs a mill for crushing seedspreparatory to the oil thcrelVora by press-ure. The seeds are led from the hopper a by a IoUer Fig Oil-Mills. b, the amount being regulated by an adjustable plate,and pass between the crushing-rollers c d, the smallerone of which has adjustable bearings, so that thedistance between them may be varied. Theroller is driven by belt and pulley, and has agear which moves the smaller one. £ shows a mill, heater, anil juess combined. Fig. 3383 is the olive-mill of Barbory. Fig. 3383. largerspur-


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