Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 245
ragm to escape. The pressure beingremoved, the valve opens and again admits steam to the radiator. Diaphragm Motors. Dampers are operated pneumatically ina similar manner to steam valves. A diaphragm motor, so called, isacted upon by the air-pressure; and this lifts a lever which is…
Architecture · Building · Carpentry
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