A treatise on architecture and building construction (1899)
International Correspondence Schools · Scranton, The Colliery engineer co. · leaf 246
Each loop is com-plete in itself, and re-quires no base or supplychamber. They* are connected together, in any number desired, by means ofnipples a and c. When the connection at the top is notdesired, the loops are bound together by a bolt which passesthrough the space between them, shown in the… … Fig. 32. 81, Fig-. 32 shows an extended surface loop which is espe-cially designed for indirect heating. These loops, or ^^^//^;/.y, arecoupled together by nipples, as illustrated at a and c in Fig. 31. Another variety which is in extensive use for indirectheating is shown in Fig. 33. This is…
Architecture · Building
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