OCR Text |
Show HUfflf MACHINE FOR ROAD BUILDING Useful for Applying Hot Bituminous Binder Under Pressure, Filling Spaces Eetween Stores. A recent addition to rrs-l IniiUlinp equipment is a gasoline driven machine ma-chine used for applying tho htit .it u ni-Inous ni-Inous binder under pressure i-o thai it will penetrate and fill the .-paces between be-tween the stones, says Popular lie chanics. After the lirst course of stone is laid this machine is run over the roads, discharging the bituminous binder through a series of vertical pipes at the forward end. As soon as the binder has hardened, a second course of stone is laid and roiled, the rolling forcing the two courses into one compact layer. The binder is then applied a second lime, and the proc- 1 " wcwMiMa--05 ' Road Building Machine. ess is repeated until the road is completed. com-pleted. This process makes it possible possi-ble to build a compact road with no openings into which water can pene-tra'.e. pene-tra'.e. The bituminous binder is carried car-ried in the large tank, which has a capacity of 750 gallons, it is heated by steam coils in the tank, the steam being supplied by a flash boiler which is fired by fuel oil. Steam supplied by this boiler is also used for running an air compressor by which the binder is forced into the spaces between the stones. |