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US Patent: 1,692,705
Clutch Actuating Means for Machine Tools
Patentee:
William L. Schellenbach - Wyoming, OH

USPTO Classifications:
82/135

Tool Categories:
metalworking machines : metal lathes : engine lathes

Assignees:
American Tool Works Co. - Cincinnati, OH

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Mar. 03, 1927
Granted: Nov. 20, 1928

Patent Pictures: [ 1 | 2 ]
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"Vintage Machinery" entry for American Tool Works Co.
Description:
The present invention relates to clutch actuating means for machine tools, and is shown employed for actuating clutches in a lathe apron concerned in the feeding movements of the tool-holder. In machines of this character it has been usual to clutch and unclutch the clutch by means of a hand-wheel, usually of star form, and serving as a nut or bolt to draw the clutch elements together or to separate the same. It has been found in practice that sufficient clamping force cannot be exerted conveniently by mechanism of this character, especially when the feeding movement of the tool is resisted by great forces required in modern machine tool practice for taking heavy cuts, and under the modern practice of high cutting speeds, and it has also been found that release of the clutches by such means has also been difficult and inaccurate for definite limits of cutting movements, due, in part, to the fact that such hand-wheels turn during the feeding movements of the tool, making it difficult to properly grasp and to turn the same in clamping and in unclamping directions. It is the object of the present invention to provide simple means capable of exerting great power for operating a clutch, further, to provide such means with a control part which is relatively stationarily positioned, further, to provide improved clutching means wherein the clutch is normally in clutching relation, and a hand-lever normally stationary on its support and pivoted in such manner that the operator may conveniently exert great power for changing the clutch relations, and, further, to provide novel means whereby a cam-operating lever may be independently mounted in coactive relation with the clutch actuating part.

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