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Title: |
1911 Article-John Lang & Sons, Bench Straightening Press |
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Source: |
Machine Tools Commonly Employed In Modern Engineering Workshop, V1, 1911, pgs. 54-55 |
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Insert Date: |
7/9/2020 1:23:42 PM |
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In fig. 68 is illustrated a bench straightening press, made by Messrs. Lang & Sons, of Johnstone, for removing bends in rods of a maximum diameter of 2½ in. To locate the defects, the rod is mounted between the adjustable centres on the front of the machine, and is rotated by one hand, the other being free to mark the bent places with chalk. The rod is then removed and supported on the adjustable blocks under the press screw, by means of which it can be straightened. These operations are repeated until all the kinks and bends are removed. Rollers are sometimes provided, in addition to the centres, to accommodate uncentred work. Bar-working machines are generally fitted with automatic chucks capable of dealing efficiently with bars that vary slightly in diameter; but it is desirable to use bar stock free from scale, which otherwise chips off when gripped by the jaws, and wears the working parts of the machine. |
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1911 John Lang & Sons, Bench Straightening Press
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