Benjamin, Charles Henry, 1856- [from old catalog], Hoffman, James David, 1868- [from old catalog] joint author · New York, H. Holt and company · leaf 316
ng and adjusting the tools.Double machines avoid the necessity of such changes. Machines such as are here represented require more work thanshould be expected of one assignment. They may, however, beassigned to two men. This is especially true of the doublemachines, in which case the frames may be… … Fig. 145.
Machine design
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