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This photograph shows the power transmission machinery in the Ohio Malleable Iron Company, a Columbus-based subsidiary of the Jeffrey Manufacturing Company, Columbus, Ohio, 1919. Power was delivered to the machines by overhead drive shafts, pulleys and belts. Each drive shaft had its own power source, either water, steam or electrical
Twin bucket elevator made by the Jeffrey Manufacturing Company of Columbus, Ohio on display in the f...
Inside this power house located at the Ohio State University is a coal conveyor built and installed ...
This is a view of the chain shop of the Jeffrey Manufacturing Company of Columbus, Ohio, ca. 1895. A...
Saw shed of the Ohio Malleable Iron Company, a Columbus-based subsidiary of the Jeffrey Manufacturin...
A worker is using a lathe to turn a steel shaft at the Ohio Malleable Iron Company, 1919. This compa...
Interior view of the new Ohio Malleable Iron Company foundry, Columbus, Ohio, 1916. Ohio Malleable w...
Interior view of the Ohio Malleable Iron Company's foundry on May 9, 1919. The Jeffrey Manufacturing...
Reproduction of a photograph depicting an interior view of the Jeffrey Manufacturing Company's machi...
This power house at the Columbus Railway Power and Light Company used many conveyors that were made ...
This photograph depicts mechanical vibrating conveyors, or MV conveyors, made by the Jeffrey Manufac...
This photograph is a general shop view of the Jeffrey Manufacturing Company of Columbus, Ohio, ca. 1...
A conveying system built by the Jeffrey Manufacturing Company of Columbus, Ohio in use at the Kavy C...
This canning machine used conveyors made by the Jeffrey Manufacturing Company of Columbus, Ohio. The...
This photograph shows how newly-cast pulleys were finished smooth using lathes and grinders at the J...
This photograph depicts a 209-B portable loader produced by the Jeffrey Manufacturing Company of Col...
Twin bucket elevator made by the Jeffrey Manufacturing Company of Columbus, Ohio on display in the f...
Inside this power house located at the Ohio State University is a coal conveyor built and installed ...
This is a view of the chain shop of the Jeffrey Manufacturing Company of Columbus, Ohio, ca. 1895. A...
Saw shed of the Ohio Malleable Iron Company, a Columbus-based subsidiary of the Jeffrey Manufacturin...
A worker is using a lathe to turn a steel shaft at the Ohio Malleable Iron Company, 1919. This compa...
Interior view of the new Ohio Malleable Iron Company foundry, Columbus, Ohio, 1916. Ohio Malleable w...
Interior view of the Ohio Malleable Iron Company's foundry on May 9, 1919. The Jeffrey Manufacturing...
Reproduction of a photograph depicting an interior view of the Jeffrey Manufacturing Company's machi...
This power house at the Columbus Railway Power and Light Company used many conveyors that were made ...
This photograph depicts mechanical vibrating conveyors, or MV conveyors, made by the Jeffrey Manufac...
This photograph is a general shop view of the Jeffrey Manufacturing Company of Columbus, Ohio, ca. 1...
A conveying system built by the Jeffrey Manufacturing Company of Columbus, Ohio in use at the Kavy C...
This canning machine used conveyors made by the Jeffrey Manufacturing Company of Columbus, Ohio. The...
This photograph shows how newly-cast pulleys were finished smooth using lathes and grinders at the J...
This photograph depicts a 209-B portable loader produced by the Jeffrey Manufacturing Company of Col...
Twin bucket elevator made by the Jeffrey Manufacturing Company of Columbus, Ohio on display in the f...
Inside this power house located at the Ohio State University is a coal conveyor built and installed ...
This is a view of the chain shop of the Jeffrey Manufacturing Company of Columbus, Ohio, ca. 1895. A...
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