. Engineering and Contracting . 1920 Mcdel Smith Simplex Paver. eration of the machine is controlled by four levers and tourcontrol wheels, all located within easy reach of a man stand-ing on the operators platform. Another feature is that ofconvertibility. It is possible to use the paver with either aboom-and-bucket or a chute delivery. The frame is so con-structed as to accommodate either equipment and the changecan be made quickly—right on the job if necessary. Thetraction may be the wheel or the caterpillar type. (84) Engineering and Contracting for March S, 1920. ?33 Portable High Pressur
. Engineering and Contracting . 1920 Mcdel Smith Simplex Paver. eration of the machine is controlled by four levers and tourcontrol wheels, all located within easy reach of a man stand-ing on the operators platform. Another feature is that ofconvertibility. It is possible to use the paver with either aboom-and-bucket or a chute delivery. The frame is so con-structed as to accommodate either equipment and the changecan be made quickly—right on the job if necessary. Thetraction may be the wheel or the caterpillar type. (84) Engineering and Contracting for March S, 1920. ?33 Portable High Pressure Pumping Outfitfor Road Builders A high pressure, horizontal, triplex pumping unit, speciallydesigned to meet the conditions met in road construction oper-ations, has been placed on the market by the Domestic En-gine & Pump Shippensburg. Pa. The units are built forhard and constant duty and for pressures up to and including300 lb. per square inch. It is claimed that the outfit will han-. \ew Domestic Road Builders Pumping Unit. die water containing a small percentage of sand or grit with-out damage to the pump. The plungers do not come in con-tact with the metal of the cylinders, being held in alignment>y a very liberal cross head and working back and forththrough stationary rings of waterproof hydraulic packingplaced in easily accessible stuffing boxes. The pinion gear onI he engine is engaged or disengaged by a friction clutch ofliberal friction area. This permits the starting of enginewithout load and then when engine is up to speed the start-ing lip of the pump gradually even against full load. The out-til is mounted pn an all metal low-wheel, broad face tiretruck, which makes unnecessary any other foundation forheld installations. The unit is made in three sizes: 40 per minute and total work head of 500 ft.; 50 per minute and total work head of 380 ft.; and 50gal. capacity per minute and total work head of 575 ft. A New 1-Ton Truck Th
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