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Core Iron Press Room
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Speed presses stamp out core laminations for transformers at Thordarson Electical Manufacturing Company. Chester Thordarson was a Chicago inventor and manufacturer of electical apparatus, famous for inventing the electrical transformer in 1904. He was also known for his bequest of what was the core of the UW-Madison rare book collection and his estate on Rock Island in Door County.
circa 1910-1919
Thordarson, Chester Hjörtur , 1867-1945
Publication Information
Physical Description
Collection Information
Copyright Information
W0129G2
WHi 28523
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Shipping Room at Thordarson Electrical Manufacturing
circa 1910-1919
Workers get transformers ready for distribution in the shipping department at Thordarson Electical Manufacturing Company. Chester Thordarson was a Chicago inventor and manufacturer of electical ap...
Hand Winding at Thordarson Electrical Manufacturing
circa 1880-1945
Workers hand wind filament on transformers at Thordarson Electical Manufacturing Company. Chester Thordarson was a Chicago inventor and manufacturer of electical apparatus, famous for inventing th...
Sheet Metal Press Room
circa 1880-1945
The general press room is where sheet metal is made into housing for transformers, and fibre and bakelite insulators are formed at Thordarson Electical Manufacturing Company. Chester Thordarson wa...
1,000,000 Volt Coil
circa 1910-1919
Workers construct a 1,000,000 volt coil at Thordarson Electical Manufacturing Company.
Thordarson's Multiple Lighting Transformer
circa 1880-1945
Rendering of a Thordarson Electical Manufacturing Company product. Chester Thordarson was a Chicago inventor and manufacturer of electical apparatus, famous for inventing the electrical transforme...
Rhumkorff Coils
circa 1880-1945
Rendering of a Thordarson Electical Manufacturing Company product. Chester Thordarson was a Chicago inventor and manufacturer of electical apparatus, famous for inventing the electrical transforme...
