. Water & sewage works . tohave two laborers handle the machine,putting one man on each side of the ma-chine, where they will be in the best po-sition to keep it moving along the workand sweep across. The power machinewith two men to handle it should do asmuch work as from eight to ten menusing the hand tampers, as the powermachine will not shorten the stroke orreduce the number per minute, for thisis automatically regulated, and the oper-ator can give his whole attention to mov-ing the machine over the work. The machine consists of a truck car-ried by two 36-inch wheels (and sup-ported at the
. Water & sewage works . tohave two laborers handle the machine,putting one man on each side of the ma-chine, where they will be in the best po-sition to keep it moving along the workand sweep across. The power machinewith two men to handle it should do asmuch work as from eight to ten menusing the hand tampers, as the powermachine will not shorten the stroke orreduce the number per minute, for thisis automatically regulated, and the oper-ator can give his whole attention to mov-ing the machine over the work. The machine consists of a truck car-ried by two 36-inch wheels (and sup-ported at the rear by legs), upon whichis a long frame or sweep which is pivotedover the truck axle and is composed of apair of 3-inch steel channels stiffened bytruss rods. It is swung to and fro hori-zontally to cover desired width. Thisframe carries a small gasoline engine atone end, while at the forward is a trainof gearing which gives a vertical recip-rocating motion to a long bar or timberfitted with a tamping head. The wheels. STALEY tamper uitJi attachment for cutting holes in concrete ,-. Wll 564 MUNICIPAL ENGINEERING and the shoes on the rear legs have a ver-tical adjustment of about 8 inches, so thatthe machine can be set level when work-ing close to the curb, with one wheeland shoe on the sidewalk. The vertical beam or lifter bar is hard-wood, faced on two sides with small steelchannels which slide in the channelguides supported by diagonal braces fromthe frame. The lifting mechanism con-sists of two rolls placed on opposite sidesof the lifter bar, geared together anddriven from the engine by a belt. Thefront roll is pressed against the tamperby coiled springs, and a portion of thecircumference of each roll is cut away soas to release the tamper the tamper is gripped, raised anddropped once with each revolution of therolls, the length of stroke being 2 number of strokes is from 50 to COper minute. When not in use. the tamperis held in th
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsewerage, bookyear191
