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Title: |
1895 Article-F. H. Crafts, Turret Lathe |
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Source: |
Chicago Journal of Commerce, 13 Jun 1895, pg. 22 |
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Insert Date: |
10/29/2012 12:32:58 PM |
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F. H. Crafts of the Buffalo Wood working Machine Company, Buffalo, N. Y., is putting on the market a new turret lathe of which we present an illustration. This machine embraces in its construction many new features, the most important of which is the means employed to change the speed of the spindle and to regulate the tension of the belts. This is accomplished by the employment of four endless belts. These belts, when placed upon the steps of the cone, have considerable slack in them. Each belt is provided with a tightener. The tighteners are operated by levers having notchings planed in at regular intervals; by releasing one of the tighteners and engaging either of the others any change of speed may be instantly made and any tension of the belt may be secure, suitable to the character of the work being done. As the belts are pulling down on the spindle, more rigidity is secured and all chattering and trembling are entirely eliminated, thus insuring much better work than on the old style machines where the belts pull up. It is a well known fact that the spindle on all machines of this character hardly ever run at proper speed. This is mainly attributable to the imperfect means provided for shifting belts. Consequently the ordinary operator will not make the changes any oftener than absolute necessity compels him to. This involves a vast amount of lost time and absorbs money that ought to show as a part of the profits. The result is the manufacturer wants to know why it is he can not make a little money as well as the men. Now this is all changed. When the operator is placed in charge of this machine, it makes him feel proud. He imagines he is running a locomotive and is anxious to work the levers and give her more steam. The result is a maximum amount of work at a minimum cost, and large profits inevitably follow. With proper tools for the turret, the capacity of the machine over the ordinary engine lathe will be increased from one to two hundred per cent. The turret is hexagon in form and will carry six tools of different forms. The turret has automatic feed and trip and is made with set-over attachment if desired. The spindle has 1¾ inch hole with large bearings, running in carbonized phosphor bronze boxes. The counter-shaft has friction pulleys 14 inches in diameter, 6 inch face and should run about 175 R. P. M. Weight is about 5,000 lbs. |
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1895 F. H. Crafts, Turret Lathe
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