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Scientific American, Vol. 69, No. 19 (November 1893) (1893)
leaf 4
tudinal stringers, a filling of loose earth, gravel or bers, which are designed to relieve broken stone being compacted between the planking the cylinder of exhaust steam by and the stringers to form the road proper and com- the proper action of the valve. pletely conceal the crib, the latter… … Press. PLATTEN'S UNDERGROUND TIMBER ROAD. dumb waiters, automatic hatch doors, etc. © 1893 SCIENTIFIC AMERICAN, INC.Exhibit · Apparatus · Valve · Munn · Adapted · Scientific American · Cross piece · Columbian exposition · Horse power · Live steam · Street railway · Electric railway · Live stock · Sewing machine · Brush electric
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