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
Open Type. Enclosed Type. Fig. 114. Beckam Thermostat. reverse of the above occurs. Fig. 114 shows twotypes of the Beckam thermostat. The motor may receive its power from aspring wound up within it; or, as in the Beckamtypes, the force to drive the motor may be gen-erated by a weight wound up daily…
Architecture · Building
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
