Cornell University Cornell Insignia
Cornell University Cornell University Library

Southeast AsiaVisions

  • Home
  • Collection
  • Project
for
| Search History
Book or page image
Read page 390
  • View print copy

The boy travellers in the Far East : part second, adventures of two youths in a journey to Siam and Java, with descriptions of Cochin-China, Cambodia, Sumatra and the Malay Archipelago Page 390

Author:
Knox, Thomas Wallace
Publication Info:
New York: Harper, 1880, pg 390

Text on page 390

390 THE HOY TRAVELLERS IN THE FAR EAST. the size of an English walnut; the bean is enclosed in a thick husk, and the great point in the preparation is to remove the husk without injuring the bean. Pounding by hand is likely to damage the bean by breaking it. and when this is done the market value of the coffee is considerably reduced. Inventors have studied the problem, and a good many machines have been devised to accomplish the desired separation. The most successful one thus far is the invention of an Englishman in Ceylon, and his machines are in use all over the coffee-producing world. He has called the principle of specific gravity to his aid, and made it DUTCH OVKUSKEUS. very useful. The coffee-berry floats on water, as the husk is very light, but the bean by itself sinks to the bottom. A stream of water floats the berries along a narrow channel, and feeds them automatically into a groove where two plates of copper revolve in opposite directions about half an inch apart. These plates crush the berry, but do not injure the bean ; the husk and bean together are carried to a trough, where the bean sinks and is caught in a tub, while the useless husk floats away to whatever distance the water is made to carry it. The coffee is then spread out on a platform and dried in the sun, and it is afterwards sorted, winnowed,very useful. The coffee-berry floats on water, as the husk is very light, but the bean by itself sinks to the bottom. A stream of water floats the berries along a narrow channel, and feeds them automatically into a groove where two plates of copper revolve in opposite directions about half an inch apart. These plates crush the berry, but do not injure the bean ; the husk and bean together are carried to a trough, where the bean sinks and is caught in a tub, while the useless husk floats away to whatever distance the water is made to carry it. The coffee is then spread out on a platform and dried in the sun, and it is afterwards sorted, winnowed,
  • Home
  • About the Collection
  • About the Project

©2014 Cornell University Library | Privacy | Web Accessibility Assistance

For feedback or questions, please contact us.