Scientific American Supplement, No. 623, December 10, 1887 by Various
page 29 of 143 (20%)
page 29 of 143 (20%)
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the wheel could be at its proper place. (See Fig. 25.) There were, of
course, many of the wheels with small dish and long axles still in use. Their treatment, however, when the day of change came, did not vary from that of the short axle. [Illustration: FIG. 24 and FIG. 25] It had been the rule for some years that all axles should be turned back 1½ in. further than needed; but unfortunately the rule had not been closely followed, and many were found not to be so turned. To make the matter worse, quite a number of the wheels were found to have been counterbored about ½ in. deep at the back end, and the axle turned up to fit this counterbore; a good idea to prevent the running in, in case the wheel worked loose, but bad from the standpoint of a change of gauge. In such cases the wheels had to be started off before the axle could be turned back, so that the wheels could be pushed on in their proper position. (Fig. 26.) [Illustration: FIG. 26] If the work was done where they had a lathe large enough to swing a pair of wheels, they were pressed off but half an inch, the wheels swung in the lathe, the axles turned back 1½ in., and the wheels then pressed on 2 in. or 1½ in. inside of their first position. Where no large lathe was in use, the wheels came entirely off before the axles could be turned back. The work in the former case was both the quicker and the cheaper. Where the large lathes were used they were either set down into the floor, so a pair of wheels would easily roll into place, or a raised platform was put before the lathe, with |
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