. Machinery and processes of the industrial arts, and apparatus of the exact sciences. hollow of theother. This is what happens periodically in the Behrens engine, asheretofore described. The ends of the two Fig. 71. letter S rotaries which are not engaged witheach other, are at the same time in contactwith the outer wall of the enclosing follows, from these statements, that thereare extended junctures made by simple con-tact, on the tightness of which depends theprevention of the percolation of waterthrough the instrument without being mea-sured. And these joints cannot be packedwithou
. Machinery and processes of the industrial arts, and apparatus of the exact sciences. hollow of theother. This is what happens periodically in the Behrens engine, asheretofore described. The ends of the two Fig. 71. letter S rotaries which are not engaged witheach other, are at the same time in contactwith the outer wall of the enclosing follows, from these statements, that thereare extended junctures made by simple con-tact, on the tightness of which depends theprevention of the percolation of waterthrough the instrument without being mea-sured. And these joints cannot be packedwithout creating a friction which will beequally prejudicial to their satisfactory per-formance. The whole of the lateral surfacesof the rotary apparatus must move freelyover the plane surfaces of the ends of thebox; and the edges of the extremities of the Paytons Meter for must move in the same manner over the whole cylindricalsurface. Notwithstanding this apparent liability to leakage, the in-strument is asserted to perform without change of rate under all COCHRANE7S WATER METER. In the United States section was exhibited a water meter for measur-ing liquids flowing under pressure, which, from an error of classification,failed to come under the notice of the proper jury. Objects of thisdescription were assigned in the programme of the imperial commis-sioners to Class 53. Cochranes meter was entered in Class 12, where itwas out of place, and was passed without attention. As it embracesall the important elements of a good meter, an attempt will be made todescribe it here. The general appearance of the apparatus is shown inthe figure, and is that of a cylindrical or cylindro-conical vessel, glazedfor about one-half its altitude from the top, and constructed of metalbelow. The measurement is made by means of a vessel having some-what the form of a double scoop; this being divided in the middle bya partition, and balanced upon a pair of pivots in such a man
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Keywords: ., bookcentury1800, booksubjectmachinery, booksubjectscientificappa
