3d, Securing a continuous and complete distillation of hydrocarbon oils
by causing the oil to flow over the surfaces of a succession of heated
pipes in different vacuum stills, the temperature of such pipes
increasing in each successive still, so as to drive off at first more
volatile ingredients, and then those less so, and so on till only the
residuum remains, substantially as hereinbefore described.
72,127.--GRAIN DRILL.--Joseph G. Yale, Cumberland Co, Pa.
I claim the quarti-elliptical shovel, B, with its base, E E', coming to
a point at E, the rod, C, the rod, H, with thereon the balls, D and D',
together with the funnel, A, all constructed and operating in the manner
and for the purpose described.
72,128.--WINDOW-SASH STOP.--George R. Vanderbilt (assigner to himself,
J. J. Lindstrom, and D. W. Stidolph), Mount Vernon, N.Y.
I claim, 1st, The two clamping plates, and the tightening bolt, combined
and operated substantially as and for the purpose specified.
2d, The springs, arranged in relation to the plates, c d, substantially
as and for the purpose specified.
72,129.
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