, thegreater changes of lengthby tension and compres-sion in such special brac-ings, which are, of course,weaker than the crossbeams, increases the later-al flexure and hence the os-cillation period. The matter of oscillation of bridges is of an electric car, for sweeping up and carrying off the AN… … ELECTRIC SELF-LOADING CAR FOR STREET SWEEPING. more appreciated ot late years than formerly, the con-viction gaining ground rapidly that horizontal vibra-tions are as injurious to durability as vertical ones are.(5) Loaded levers to counteract the push of an arch were applied to the street girder…
Patents · Kangaroo · Scientific American · Calumet · Trolley wire · Rapid fire · Paper feeding · East river · Cross beams · Type writing · Large number · Suspension bridges · Postal union
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