Speed reducer gear box with flywheel

Claim 1

A speed reducer gear box comprising, a housing means having an input shaft rotatably mounted therein and adapted to be connected to a power source, said input shaft having a toothed gear means thereon, an output shaft rotatably mounted in said housing means and extending therefrom, said output shaft being adapted to be connected to a driven member, an intermediate shaft mounted in said housing means and having a first toothed gear means mounted thereon which is in mesh with said toothed gear means on said input shaft, said intermediate shaft having a second toothed gear means thereon, said output shaft having a toothed gear means mounted thereon which is in mesh with the said second toothed gear means of said intermediate shaft, said toothed gear means on said input, intermediate and output shafts being of relative sizes such that said input shaft is rotated at a higher rate of speed than said intermediate shaft and said intermediate shaft is rotated at a higher rate of speed than said output shaft, a flywheel, means for mounting said flywheel on said input shaft for rotation of said flywheel in unison with said input shaft, said input shaft being adapted for connection to a power source independently of said means for mounting said flywheel on said input shaft, and said housing means comprising an enclosure for said flywheel, said toothed gear means, said intermediate shaft and at least portions of said input and output shafts, said housing including first and second bearing means into which opposite ends of said input shaft are rotatably mounted, said flywheel being mounted on said input shaft at a position between said first and second bearing means, and said housing including third and fourth bearing means into which opposite ends of said intermediate shaft are rotatably mounted and means for supporting said third and fourth bearing means on the same side of said flywheel and in radially overlapping relation thereto.