 | John Arthur Phillips - 1852 - 698 páginas
...centre of this arrangement, and which is moved by an eccentric driven either by water or steam power, b made to alternately raise and depress the level of the water in the box and consequently also in the sieves, which are fixed watertight into the rings on the top of it. By this motion of the... | |
 | Aaron Snowden Piggot - 1858 - 404 páginas
...the centre of this arrangement, and which is moved by an eccentric, driven either by water or steam power, is made to alternately raise and depress the level of the water in the box and consequently also in the sieves, which are fixed water-tight into the rings on the top of it. By this motion of... | |
 | Aaron Snowden Piggot - 1858 - 394 páginas
...the centre of this arrangement, and which is moved by an eccentric, driven either by water or steam power, is made to alternately raise and depress the level of the water in the box and consequently also in the sieves, which are fixed water-tight into the rings on the top of it. By this motion of... | |
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... which, is a circular metallic trough, perforated with six holes, each about two feet in diameter, and into all these openings a sieve is closely fitted. A large piston working in a cylinder placed in the centre of this arrangement, and which is moved... 