Transcription of MODEL BOILERS - Plans for Everything
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MODEL BOILERS - Plans for Everything
MODEL BOILERS A booklet devoted to the construction ofmodel BOILERS may well open with a fewcautionary words, as the dangers connectedwith steam -raisers are very real; and thoughmodel-boiler explosions are fortunately rare, ifthey do occur they may be extremelydisastrous. Therefore the following warnings:(1.) Do not use tins or thin sheet ironfor BOILERS . One cannot tell how farinternal corrosion has gone. The scalingof 1/100 inch of metal off a "tin" isobviously vastly more serious than thesame diminution in the thickness of,say, a 1/4-inch plate. Brass and copperare the metals to employ, as they donot deteriorate at all provided a properwater supply be maintained. (2.) If in doubt, make the boiler muchmore solid than is needed, rather thanrun any risks.
The steam-pipe is a circle of 5/16-inch copper tube, having one end closed, and a number of small holes bored in the upper side to collect the steam from many points at once. The other end is carried through the side of the boiler. Page 5
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