Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 626
the screwj to the frame, and i- terminated by heads branching out for the bottom ipan to rest against, apon the inside. This is found to be indispensable when the work is much tlThe heads of this gage are provided with Bofl or smooth surfaces, to prevent them rubbing the tin -•• a-to mar or injure… … The piece k is a collar with a lever attached thereto; the collar part of it is fitt« d upon the arbor b, allowing the arbor to turn freely in it, while the upper end passes through a loop m in the frai «•■ j> u in an upright position; and below the collar, this lever passes through the little…
Mechanical engineering
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