San Francisco : Architect and Engineer, Inc · leaf 296
tformswill travel to any level or difference in levels. Theywill then operate synchronously and automatically.This electric operation eliminates all gearing previouslyrequired to accomplish this result. Any lift may also he operated individually at the will of the operatorFull details of this… … JOHNSON DUAL SYSTEM of AUTOMATIC TEMPERATURE CONTROL For the season of 1931-32, without automatic temperaturecontrol, the group of buildings at Columbia City, Indiana, re-quired 8,070,000 pounds of steam condensate for heating.The Johnson Dual System was installed in the fall of 1932,and 3,152,000…
Architecture · Building
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