Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 681
quest, contains thenames of some of the best known and best posted users of mechanical refrigeration inthe country, and includes a number of machines in the Inited States go\ernment hos-pitals and army posts. Our Compressors, Class D (Fig. i), range in capacity from twenty tons tosixty-five tons… … Fig. I. COMPRESSOR, CLASS D The Class A Compressors are center crank machines made for belt drivingonly. This type of compressor is the first successful small machine that has been puton the market. Capacity three to twenty-five tons. The Class B Compressors are side crank machines; they difYer…
Building materials
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