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The apron was doubled walled, with its shafts supported on ball bearing at each end and all the gears hardened and ground; the base was closed off to form an oil bath to splash lubricate the internals and at the top of the front face, just to the right of cross-feed screw, was a push rod for the hand-operated plunger pump that fed lubricant from the same supply to the bed, cross-slide ways and cross-feed nut.
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The Compound slide rest was machined all over and fitted with taper gib strips that allowed a very precise fit to be obtained whilst giving far superior support in comparison with the cheaper "loose-strip" type. The cross slide was especially wide and fitted with a cross-feed screw that could be adjusted to reduce backlash. Unfortunately, it was devoid of T slots, or even tapped holes, that might have been used to hold a parting-off or other special tool; however, the slide was of a sufficient thickness to allow a hydraulic profiling attachment to be mounted on it and so the possibility existed for an owner to safely make his own tapped holes to mount anything he thought necessary.
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The dual Metric/English screwcutting gearbox was totally enclosed, lubricated from an oil bath and fitted with hardened and ground gears running on ball-race supported shafts. Three conventional levers, and a 6-position joystick that moved into radial slots around a circle, swapped the ratios. The box was able to generate a wide range of pitches without dismounting or changing any of the changewheels; the range of threads comprised: 39 Metric from 0.2mm to 14.0mm; 18 Module from 0.3 to 3.5m; 45 English from 2 to 72 t.p.i. and 21 Diametral from 8 to 44 D.P. The range of sliding feeds varied from 0.001" to 0.040" (0.03mm to 1.0mm) and surfacing feeds at half those rates (and thus) from 0.0005" to 0.020" (0.015mm to 0.5mm) - all per revolution of the spindle.
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