The Commercial Products of the Vegetable Kingdom: Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c.Simmonds, P. L. (Peter Lund)
Science
The Commercial Products of the Vegetable Kingdom: Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c.
Simmonds, P. L. (Peter Lund)
Botany, Economic
Choolahs. These are formed of kucha bricks, and are 10 inches high,
10½ inches deep, and generally about 2 feet in diameter.
Funnel made of bamboo to allow the heated air from the choolahs to
pass through the tea; it is seldom used; the Chinese tea
manufacturers preferring one made in the tea basket by the hand.
Oven for firing green tea made of kucha bricks. The pans are
inclined at an angle of 50. In front the oven is 3 feet 2 inches in
height, behind 4 feet 8 inches, length 5½ feet, breadth 3 feet. Door
10 inches from the base, 1 foot 2 inches high, and 7 inches wide.
Frames for placing baskets. The first being inclined.
Baskets for collecting leaves.
Shovel, &c., used in regulating the fire.
Winnowing machine. This is a common winnowing machine, with a box 2
feet 10 inches in length, 1 foot 2 inches in breadth, and 1 foot 3
inches in depth, attached to the bottom of the hopper, and closely
fitted into the middle of the circular apartment which contains the
fanners. This box is entirely closed above (unless at the small
opening receiving the hopper) and at the sides. At the base there
are two inclined boards which project from the side of the machine 6
inches, and are partly separated from each other by angular pieces
of wood. The end towards the fanners is open, the other is partly
closed by a semicircular box which is moveable.
I shall now give the dimensions of the different parts of this
machine, which may be useful to parties wishing to make up similar
ones to those employed in the manufactories.
External frame 7 feet 2 inches in length, 18 inches in breadth, and
5 feet 8 inches in height. Hopper 2 feet 10 inches above, and 1 foot
8 inches in depth. Frame of box for fanners 3 feet 9 inches in
diameter. Hopper frame 2 feet 7 inches. Semicircular box, in length
2 feet 5 inches and 7 inches in depth. Inclined plane at base, first
15 inches, second 13 inches.
I may briefly state how this machine acts. With the right hand the
fanners are propelled by the crank, and with the left hand the
bottom of the hopper is opened by removing the wood. The flat piece
of wood (the regulator) is held in the hand to regulate the quantity
of tea that passes down. An assistant then throws a quantity of tea
into the hopper which escapes through the apartment, and there meets
the air. The first kind of tea falls down the inclined plane into
one box which has been placed to receive them, the second are
propelled further on, and fall into another box, and the lighter
particles are propelled on to the semicircular end, and fall into a
third box.
Public-domain text, read in full here on John Shaqi.
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