Journal of the Franklin InstitutePergamon Press, 1872 |
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acid apparatus Baldwin Locomotive beds belt bolts bottom braces bridge carbon cast cast-iron cent centre chalcopyrite chemical clinker coal construction copper County curves cylinder depth diameter electrical experiments explosion feet flame force formula Franklin Institute furnace Gaston County gears gold heat hematite Henry Disston horizontal invention iron Journal limonite locomotive machine Machinery magnetic magnetite manufacture mass Mechanical metal miles Mill mines Mitchell County nearly needle North Carolina observations obtained Oliver Evans operation oxygen parabola pass PATENT Philadelphia pier pipe plates polarity portion pounds pressure produced Prof pulleys pump pyrite quantities quartz rafter Railroad river rivets rocks Sandy Hook SERIES.-No shaft side sin² slates square inch steam boilers steel stereoscope Stokes Counties Street sulphur surface temperature tion Transfer Tables truss tube upper valve veins velocity vertical weight wheels
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Էջ 78 - The Committee on Science and the Arts constituted by the Franklin Institute of the State of Pennsylvania, for the promotion of the Mechanic Arts, to whom was referred for examination a Solar Compass, invented by WM.
Էջ 211 - ... to the author of any important discovery or useful improvement in light or in heat, which shall have been made and published by printing, or in any way made known to the public, in any part of the continent of America, or any of the American islands ; preference being always given to such discoveries as shall, in the opinion of the Academy, tend most to promote the good of mankind...
Էջ 360 - ROEBLING (JA) Long and Short Span Railway Bridges. By John A. Roebling, CE Illustrated with large copperplate engravings of plans and views.
Էջ 288 - DRAWING. rilHE subscriber would respectfully inform his friends and the public, that he conJL tinues to give instruction in MACHINE, ARCHITECTURAL, TOPOGRAPHICAL, and LANDSCAPE DRAWING, and PAINTING in OIL and WATER COLORS. Day and Evening Classes at the office, and instructions given in Schools and Families.
Էջ 168 - The time will come when people will travel in stages, moved by steam engines, from one city to another, almost as fast as birds fly, fifteen or twenty miles an hour.
Էջ 216 - ... official examination. Inventors who desire to consult with us are cordially invited to do so. We shall be happy to see them in person at our office, or to advise them by letter. In all cases, they may expect from us an honest opinion. For such consultations, opinion and advice, we make no charge.
Էջ 360 - FOR PRACTICAL & ANALYTICAL CHEMISTRY, CHANT STREET, TENTH STREET BELOW MARKET, (Rear of St. Stephen's Church, Philadelphia.) ESTABLISHED IN 1636.