. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . ibrations adash-pot is fitted inside the coils of one of the record the compression of the springs the arm ofthe dynamometer carries a set of three drums, from thefirst of which a roll of paper is gradually unwound as\\u- dynamometer revolves, and passing over the seconddrum is recoiled on the third. A pencil connected witiione of the two spiral springs marks tlie [lai^er as itpasses ov(!r the sceond drum
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . ibrations adash-pot is fitted inside the coils of one of the record the compression of the springs the arm ofthe dynamometer carries a set of three drums, from thefirst of which a roll of paper is gradually unwound as\\u- dynamometer revolves, and passing over the seconddrum is recoiled on the third. A pencil connected witiione of the two spiral springs marks tlie [lai^er as itpasses ov(!r the sceond drum. The method adopted forworking tiie drums is peculiar. A weiglited lever vi-brates on its center through a limited arc as the dvna-moiiieter revolves, thus actuating a ratchet, which inturn moves the drums forward step by step; this siin-I>Ie device has been found to act mostsatisfactorily upto a speed of () revolutions per minute. ?^-l*-.^l.• ^ Srachines, drain and Injectors. An apjmratus ff)r removing sewage used in the so-called•wai^c from a given district is finally collected into one pipe, shown atHows into the ejector at the 1. —Amslcrs rioordinijtlynainometer. KJK<TOI{, Slione system. Tthe left of Fig. 1. ancl ELEVATORS. 247 When the ejector is filled, an automatic action is established which admits compressed air,brought to the ejector from a central compressing station, which may be, as at Eastbourne,England, three miles away. The compressed air acts on the contained sewage in the air-tightejector with the requisite pressure,driving it out of the ejector into thesewage-main, no matter how high thelatter may be above the ejector sewage being ejected, the actionof the automatic gearing is reversed,which cuts oil the supply of compressedair, and permits the air in the ejectorto escape into the sewers, to aid intheir ventilation. The sewage thenflows in again, and the action is re-peated as often as is necessary,
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
