. The street railway review . CLOW S LOW WATER ALARM. The left hand cut shows the construction of the indi-cator. The center brass pipe runs from point whereindicator is inserted in boiler to the top of the air chamber,and by its use an immediate circulation of live steam issecured when water goes below the safety line. The stop cock is of an improved pattern, and will notset or expand, and can always be opened or closed lock is brass and furnished with two keys. The fusible metal is held in brass plug connecting the offsetand stop cock. When the metal fuses it is forced by thepress
. The street railway review . CLOW S LOW WATER ALARM. The left hand cut shows the construction of the indi-cator. The center brass pipe runs from point whereindicator is inserted in boiler to the top of the air chamber,and by its use an immediate circulation of live steam issecured when water goes below the safety line. The stop cock is of an improved pattern, and will notset or expand, and can always be opened or closed lock is brass and furnished with two keys. The fusible metal is held in brass plug connecting the offsetand stop cock. When the metal fuses it is forced by thepressure of escaping steam into upper part of the offset,and the steam, free of the metal, operates the whistle,thus securing an absolutely sure and safe low wateralarm. To connect it, tap hole in boiler, size of 54^-inch gaspipe, connect piece of ^-inch gas pipe in bushing andallow it to extend down in boiler so that it will be two orthree inches above the flues; screw bushing tightly intoboiler and the alarm is ready to give imm
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
