Radford's cyclopedia of construction; carpentry, building and architecture. Based on the practical experience of a large staff of experts in actual constrcution work (1909)
Johnson, Alfred Sidney, 1860-, Radford, William A., 1865- · Chicago Radford Architectural Co · leaf 183
ed near the heater.The thennostat employed usually consists of ametal frame holding some form of metal orother substance very susceptible to variationsof heat and cold. When expanded by heat, thissubstance is thrown against a pin, by this move-ment closing the electric circuit to the motor, 154…
Architecture · Building
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
