. 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. GEARING AND GEAR MOTION, ETC. 241. 628. VARIABLE SPEED GEAR. On driving shaft A are securedfour spur gears. Shaft B above also has four gears fast upon it. A frame or box C, whichis mounted in such away that it may beturned by handle D,carries four interme-diate gears
. 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. GEARING AND GEAR MOTION, ETC. 241. 628. VARIABLE SPEED GEAR. On driving shaft A are securedfour spur gears. Shaft B above also has four gears fast upon it. A frame or box C, whichis mounted in such away that it may beturned by handle D,carries four interme-diate gears whichmesh with the driv-ing gear on shaft frame C is turned,anyone of the drivinggears may be con-nected—by means ofits intermediate—with its mate on shaft B. The index plate on handleD shows how far it should be turned to obtain a certain speed, andwhen the gears are properly in mesh a spring pin E drops into a hole inthe frame and locks it in position. The vertical shaft F can be driven ineither direction by means of the bevel gears and clutch on shaft B, theclutch being moved by a lever. 629. Plan of intermediate gears and spring pin. 630. VARIABLE DRIVE MOTION. Two cone pulleys mountedwith differential spur gear on the driving shaft with a cross arm and bevel gears, give a varietySS| of speeds between the two1 i« cone pulleys. The arm, J,run
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
