. 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. 624. VARIABLE SPEED GEAR. In the engraving the shaft,driven direct or through back gears from the pulleys, is shown at a. This shaft carries at & a long c is a nest of spur gears securedon the shaft d, through which themachine mechanism is
. 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. 624. VARIABLE SPEED GEAR. In the engraving the shaft,driven direct or through back gears from the pulleys, is shown at a. This shaft carries at & a long c is a nest of spur gears securedon the shaft d, through which themachine mechanism is will be noticed in thisbank in the revolving gear box. ^^mm. ^^ Carried by a rotating frame eand meshing with pinion h areidler gears, which, as e is turnedthrough pinion and gear actuatedby means of crank-handle F, meshone after another with their mat-ing gears in cone c, thus giving for each gear so engaged a different rateof speed to shaft d. One turn of crank F suffices to swing one idler out of mesh with itsmate and throw the next into action. Hence it is an easy matter for theoperator to change the speed even with the machine in motion, as hehas only to spring the crank out of a notch which serves to lock it fastin the position indicated and revolve it until the required intermediateis engaged with the gear cone, when the handle is again locked fast bydropping into the notch. 625. Plan of the revolving gear box and handle, F. 240 GEARING AND GEAR MOTION, ETC. 626. VARIABLE SPEED GEAR, for automobiles. German gear is of the permanent mesh type, and is adapted to give four changes of speed and reverse mo--^^ \\ I ni \Dr\\ti!IS^ tio
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
