Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 726
MECHANICAL OPERATIONS. 703 ing bench consisting of a shallow partly covered box for con-taining the sand is desirable. A follow board is placed uponthe bench, and the pattern is laid upon it. The lower partof the flask—which is known as the nowel—is placed uponthe board. Sand is now sifted upon the… … Moulding in Sand. somewhat resembling a potato masher. The wedge-shapedend of the rammer is used flr compressing the sand at thesides and ends of the flask, while the cylindrical end isused in the central position. When the nowel is full of sandit is leveled by means of the scraper, then a Httlc…
Physics · Lantern projection · Electric apparatus and appliances
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![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer04inte-444-215.webp)
