. 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. 748. EASILY MADE STEAM WHISTLE. A, a brass casting into which the bell stem may be screwed. B, a tube of the same diameter as the bell, soldered tothe casting. A, leaving an annular opening ^jxoo of an inch. C, the bell which may be cast or made of the sametubing as a
. 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. 748. EASILY MADE STEAM WHISTLE. A, a brass casting into which the bell stem may be screwed. B, a tube of the same diameter as the bell, soldered tothe casting. A, leaving an annular opening ^jxoo of an inch. C, the bell which may be cast or made of the sametubing as at B, with a headpiece, D, soldered in. MILL AND FACTORY APPLIANCES AND TOOLS, ETC. 289 749. GASOLINE - HEATED SOLDERING COPPER. Thecentral chamber is half filled with gasoline ; the asbestos wick drawsthe gasoline toward the needle valve, where the surrounding hot metalvaporizes and discharges the vapor through the small nozzle to be burned. SOLDERING IRON by the air drawn in through the holes in the tube. The flame impinges onthe solid head of the copper and is exhausted through the holes in theheadpiece. To start, a Httle gasoline is poured into the cup under thevalve neck and fired for a moment. The valve regulates the amount offlame. 750. PULLEY BALANCING MA-CHINE. A pulley poised on a centerpiece,F, is rotated at considerable speed by thearm, E, and studs, a, a. If unbalanced inthe plane of revolution, it will wabble, whenthe high points may be marked with chalkand balance pieces applied as at A and same machine, if set on rubbersprings, will show the general unbalancedcondition by the vibration of the spindleand the heavy side of the pulley markedwith chalk. 751. LUBRICATING DRILL. Holes through the length of thetwisted blades carry the oil to the cutting edges and with a constant flow clears the chips byfloating them upalong the twistgrooves. Watermay be used forcast iron or com-pressed air fedfrom a loose so
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
