. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. h Hnes D and E soarranged that the spoutline was stopped at Hand the bucket raised toautomatically empty thewater into the conveyingtrough. Spiral wings on a conical drumact as a gradual feeder to themain wings at the large endof the cone. The two sets of wings orblad
. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. h Hnes D and E soarranged that the spoutline was stopped at Hand the bucket raised toautomatically empty thewater into the conveyingtrough. Spiral wings on a conical drumact as a gradual feeder to themain wings at the large endof the cone. The two sets of wings orblades are inclined at oppo-site angles to counteract endthrust. Wenzel patent. 290. Longitudinal section, showing both sets of wings. 291. VALVELESS ROTARY PUMP. The piston has a heli-coidal form. It is fixed upon an axle, which, running in stuffing boxes, passes through a cy-lindrical pump chamberclosed at both ends. Tworollers enter this chamber atright angles with the axleand bear against the obliquefaces of the piston. It re-sults from this that if thelatter is revolved, a back-ward and forward motionwill at the same time begiven which will have the effect of producing on each side a suctionand compression. Two tubes are placed upon the pump chamber ata slight distance from the rollers. If we examine the operation of the.
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
