Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 81
he boiler. Usually thesehand-holes and. their covers areround, a form which makes it neces-sary to put the cover outside theboiler where even a good joint, wellstayed, may leak or give way undera pressure which tends to forceapart the cover and its seat. Inthe Erie City boiler the covers… … Hand-hole plates.Erie City water-tube boiler. WHEELS AND BEARINGS 47 that each elliptical plate is large enough to give access to twotubes instead of one, lessening the lines of juncture along whichleakage may occur. It was a memorable day when first a round log or stick wasthrust under a burden,…
Inventions · Inventors
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