Thermal Insulated Refrigerating Machine
A refrigerator is a cooling appliance comprising a thermally insulated compartment and a heat pump to transfer heat from it to the external environment. Refrigerators are extensively used to store foods which spoil from bacterial growth if not refrigerated.
GalleriesMiscellaneous Industrial Machinery
Government Printing Office The Official Gazette of the United States Patent Office (Washington, DC: Government Printing Office, 1895)