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Refrigeration Machines
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Air Conditioning Machine 1881
Scientific American February 19, 1881
Refrigerating called cold air machine or vapor compression method
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Air Refrigerating Machine 1881
IMPROVED AIR REFRIGERATING MACHINE.
Scientific American February 19, 1881
We illustrate a machine constructed by Messrs. Hall (John Hall and Edward Hall or J & E Hall), of Dartford, (England) for use in the Australian meat trade. The engraving is very nearly self-explanatory.
Development of the Telescope from 1561 to 1896
DEVELOPMENT OF THE ASTRONOMICAL TELESCOPE IN FIFTY YEARS.
source: July 25, 1896 Scientific American
Replogle's Rotary Water Wheel Governor 1896
source Scientific American August 8, 1896
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Prideaux's self-closing Furnace-Valve Back View
Prideaux's self-closing Furnace-Valve To Prevent Smoke
Source: New York Journal 1856
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Prideaux's self-closing Furnace-Valve To Prevent Smoke 1855
Prideaux's self-closing Furnace-Valve To Prevent Smoke