Locomotive speed recorder system
AssigneeChicago Pneumatic Tool Company
InventorsLivio F. Marcantonio, Marcel P. D'Haem
Life of this patent
Estimating the term…
Abstract
A locomotive speed recorder system having a gear train drive operable off the drive wheel of a locomotive, in which system a pneumatically operable cam bar is provided for disengaging the gear train drive so as to de-activate the recorder during dead-head engine runs. A changeable gear train is utilized to effect drive wheel wear compensation; and a right angle drive from the drive wheel incorporates reduction gearing to reduce wear of a flexible cable connecting the right angle drive with the recorder.
Claims12
A speed recorder system comprising a speed recorder assembly having a primary input shaft, a drive unit having an input drive shaft connectible to an axle of a drive wheel of a locomotive, an output shaft from the drive unit, speed reduction gearing connecting the input drive shaft with the output shaft at an angle of 90.degree., a flexible drive cable connecting the output shaft with the primary input shaft, means to operatively disconnect the output shaft from the flexible drive cable, speed recording mechanism in the recorder assembly, and changeable gearing drivingly connecting the primary input shaft to the recording mechanism at a gear ratio selected to compensate for the R.P.M. reduction at the drive unit and to correct for a specific wheel diameter of the locomotive.
A speed recorder assembly including an input shaft connectible with a drive wheel of a locomotive and adapted to rotate forwardly or reversely accordingly as the wheel rotates, an intermediate shaft for driving recording mechanism, and drive transmission means responsive to either forward or reverse rotation of the input shaft to translate such rotation into forward rotation of the intermediate shaft, the drive transmission means comprising an intermediate pinion on the intermediate shaft, an intermediate idler gear meshed with the intermediate pinion, a drive transmission gear fixed to the input shaft, a reverse frame swiveled upon the input shaft adapted to be frictionally carried angularly by the input shaft, a first idler gear mounted on the frame engaged with the drive transmission gear, a second idler gear mounted on the frame also engaged with the drive transmission gear, the frame having limited angular movement frictionally with the input shaft in a forward direction to carry the first idler gear into engagement with the intermediate gear, the frame having limited angular movement frictionally with the input shaft in a reverse direction to carry the second idler gear into engagement with the intermediate idler gear, and shiftable cam bar means for shifting the frame angularly relative to the input shaft to a neutral position in which the first and second idler gears are respectively clear of the intermediate gear and the intermediate idler gear and for simultaneously restraining the frame in such neutral position against being frictionally rotated from such position by the input shaft.
Dependencies are inferred from the claim text.