ScientificAmerican1901-11-02.jpg Rider-Ericsson Hot Air Pumps -1900'sAThumbnailsSwift's Brookfield Butter -1925ARider-Ericsson Hot Air Pumps -1900'sAThumbnailsSwift's Brookfield Butter -1925ARider-Ericsson Hot Air Pumps -1900'sAThumbnailsSwift's Brookfield Butter -1925ARider-Ericsson Hot Air Pumps -1900'sAThumbnailsSwift's Brookfield Butter -1925ARider-Ericsson Hot Air Pumps -1900'sAThumbnailsSwift's Brookfield Butter -1925A
Waste-heat auxiliary engine of 100 horse power at the Technical High-School, Charlottenburg, Prussia. Vaporizer and condenser. Berlin electrical power station. Vaporized sulphur dioxide gas being used expansively in a separate cylinder.



Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner