. 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. s inthe cut, can not be blown off by an air jet, butwill continue to roll around on the flange, asshown by the dotted lines. 334. PNEUMATIC DISK PUZZLE. A light circular plate withpin guides can only be lifted a small distance by an air jet from the flanged tube. The
. 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. s inthe cut, can not be blown off by an air jet, butwill continue to roll around on the flange, asshown by the dotted lines. 334. PNEUMATIC DISK PUZZLE. A light circular plate withpin guides can only be lifted a small distance by an air jet from the flanged tube. The theory is thatthe momentum of the air as itsuddenly spreads to a larger cir-cumference causes a partialvacuum near the outer edge, thusholding the plates so near together that their circumferential area cor-responds with the area of the central jet. 335. PNEUMATIC BALL PUZZLE. A light ball is held in ajet of air from a vertical to an angle of about 30° and revolves with considerable velocity. A light ball placed in a con-ical cup over a jet of air will beheld there and not driven offwhen the cup and jet are re-versed. A card placed on an invertedflanged jet of air, as at V, V,will not drop, even with a con-siderable weight hanging to it. ;^;36. Inverted nozzle andball. 337. Inverted nozzle withball attached to plate. 139. 140 AIR-POWER MOTORS AND APPLIANCES. 338. PNEUMATIC FAN. Compressed air is a ready means ofoperating a fan in shops where it is used for other purposes. By a simple air motor, as shownin the cut, with 60 to 80pounds pressure a highspeed may be obtained inthe fan which will throw acurrent of air 25 or morefeet, and if the exhaust airmingles with the current itscooling effect will be greatlyincreased. 339. Cross section, showing motor wheel and pipe connections.
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
