Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 404
nly those provided with stop-pins are safe.Various forms of cocks with stop-pins are shown in Figs. 11.5, 116,and 117. All key joints should be examined and tightened upoccasionally to prevent them becoming seriously loose and leaky. Poor illumination is frequently caused by ill-designed or… … Fig. 120. Plain Type of Two-BurnerGaselier. 331 108 PLUMBING Fixtures having too many scrolls or spirals may, in the case of imper-fectly purified gas, accumulate a large amount of a tarry deposit,which, in time, hardens and obstructs the passages. Another fault
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