. Machinery and processes of the industrial arts, and apparatus of the exact sciences. but two exceedingly large teeth. Theserevolve in pretty close contact, within a box to which they are fitted, soas to run as close as possible without friction. The wings being abouttwo feet long, with a considerable length of axis, this machine iscapable of delivering a large volume of air with a moderate velocity ofrotation. Driven at the rate of two hundred and fifty turns per minute,it was stated to produce a pressure equal to one-third of an atmosphere,or five pounds per square inch. thirions hydraulic
. Machinery and processes of the industrial arts, and apparatus of the exact sciences. but two exceedingly large teeth. Theserevolve in pretty close contact, within a box to which they are fitted, soas to run as close as possible without friction. The wings being abouttwo feet long, with a considerable length of axis, this machine iscapable of delivering a large volume of air with a moderate velocity ofrotation. Driven at the rate of two hundred and fifty turns per minute,it was stated to produce a pressure equal to one-third of an atmosphere,or five pounds per square inch. thirions hydraulic pressure blower. Still a third compression ventilator appeared in the Exposition, which, for its simplicity and its originality, seems to merit notice. It is called by the exhibitor, Mr. Thirion, of Mirecourt, France, a machine soufflante a colonne cVeau, but the water referred to in the name served no other 13 I A 194 PARIS UNIVERSAL EXPOSITION. purpose but to pack the moving parts and prevent friction,annexed will serve to render the construction intelligible. Fig. 59. The figure. Thirions Hydraulic Pressure Blower. Three cylinders are here seen, side by side. The two lateral ones arethe compressors, and the middle one the regulator. One of the com-pressors is shown in section. A is a cylinder of wood or sheet metal,as may be convenient, bolted to the base which sustains the this is another cylinder, and between the two is an annularspace which may be filled to any level desired with water. The waterlevel in the figure is shown at O. Between these two cylinders is sus-pended an inverted cylinder, or cylinder open downward but closed attop, which enters the annular space between the two cylinders firstnamed, without touching either. In the top of this suspended cylinderare two valves, E and E, which open inward. A cap is placed on thecentral cylinder within, and in a valve-box beneath this are two othervalves, F and F, which open outward as shown. From the closed
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Keywords: ., bookcentury1800, booksubjectmachinery, booksubjectscientificappa
