1862 London Exhibition: Catalogue: Class VIII.: Francis Wise
From Graces Guide
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2028. WISE, FRANCIS, 22 Buckingham Street, Adelphi, W.C.
Feed water regulator, indicator, and alarm for steam boilers.
FEATHERSTONHAUGH and WISE'S PATENT BOILER GUARDIAN, OR SELF-ACTING FEED-WATER REGULATOR, GAUGE, AND ALARM.
By a simple arrangement connected with a float within the boiler, and without the use of stuffing boxes, cocks, or other complexities, this little apparatus regulates the action of the feed pump, indicates the water level, and should the latter from any cause fall below a certain point, it sounds an alarm, which calls timely attention to the fact. It is thus self-testing of its own efficiency and that of the pump.