?proved System of Damping Dust in Trains of Trams or Tubs in Coal and other Mines, and Apparatus therefor.

摘要

5056. Evans, A. C., and Richards, D. L. Feb. 29. Laying dust.-In apparatus for damping dust in trains or journeys of laden trams in coal and other mines, of the kind in which the water spray is turned on and off by the moving vehicles, strikers k secured to the leading and the rearmost or other predetermined trams are arranged to contact with the upraised arm of a series of arms h1, h2, h3, &c., and so open or close the valve c through which water is admitted to the spraying-pipe l. An adjustable sleeve e is interposed between the valve spindle d and the wheel of arms h1, h2, h3, &c