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Title: |
1895 Article-George Richards & Co., Ltd., Anglo-American Lathe |
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Source: |
Modern Mechanism 1895 pgs 462-463 |
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Insert Date: |
6/20/2011 2:22:05 PM |
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Richards' Anglo-American Lathe.—Figs. 9 to 11 illustrate a lathe made by George Richards & Co., Limited, of Broadheath. near Manchester, England, and exhibited by them at the Paris Exhibition of 1889. It is called an Anglo-American lathe, and is intended to combine the best features of American and English practices. Figs. 9 and 10 show the machine in elevation and plan, while Fig. 11 is a detail section of the fast head-stock. This, it will be seen, has an arrangement of back-gearing giving an extra set of speeds by equal pinions on the spindle and back-shaft. The spindle has parallel necks, hardened and ground true, in which run taper bushes as shown, and wear can thus be compensated for. The thrust is taken up at the back end of the spindle, which is surrounded by a metal cap intended to be filled with oil, and thus the thrust-bearing is efficiently lubricated. The feed is taken from the spindle by the sliding-pinion shown below it, and the rate of feed can be changed by causing this pinion to gear either with that on the spindle or that on the cone. The tool-carriage is moved by a rack and pinion in ordinary work, and by a screw in screw-cutting. All the feed-motions of the carriage can be reversed. The guiding surfaces, both back and front, are square. The sliding head-stock is arranged to set over slightly, and thus allow long tapers to be turned. |
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1895 George Richards & Co., Ltd., Anglo-American Lathe
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