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Catalogue of the Niles Tool Works, Manufacturers of Iron and Steel Working Machinery, Railway, Car Boiler and Machine Shop Equipments - Softcover
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1891 Excerpt: ...of which are the result of an experience probably far greater than that of any other builder of Machine Tools. In its present state of perfection, the Boring Mill possesses several important advantages over the lathe for many classes of work. These advantages are as follows: 1. That its work-table is supported by the bed at its perimeter as well as at its center, whereas in a lathe the weight of the chuck plate, as well as that of the work, overhangs a journal of comparatively small diameter, and is therefore, more subject to spring, deflection and vibration. 2. It will carry two slide rests more readily adjustable to an angle, and more easily operated than a lathe slide rest. 3. It is much more easy to chuck work on a boring mill table than on a lathe chuck, because on the former the work is more readily placed upon the table, and rests upon it so that in wedging up or setting any part of the work circumference to the table, there is no liability to move the work at the other points of support upon the table; whereas in a lathe, the work standing vertical, is apt, when moving it at one part to set it, to move at another part and become unset, and furthermore requires to be held and steadied while first being gripped by the chucking dogs, plates, or other holding devices. The great range of work that a. Boring and Turning Mill is capable of performing is not fully appreciated by some who are not sufficiently familiar with its uses. Many are deterred from considering the purchase of these machines, looking upon them as involving a heavy investment upon a tool not often used. As a matter of fact, the Boring Mill never stands still. A twelve-foot mill will work on small work, of the kind to which it is adapted, to such an advantage over a lathe as to justify i...
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- PublisherRarebooksclub.com
- Publication date2012
- ISBN 10 1130474879
- ISBN 13 9781130474879
- BindingPaperback
- Number of pages56
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