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US Patent: 4,856,153
Spindle Mechanism
Patentee:
Nagle V. Gusching (exact or similar names) - Sidney, Shelby County, OH

USPTO Classifications:
29/26A, 29/27A, 29/27C, 409/144, 409/231

Tool Categories:
metalworking machines : metalworking machine mechanisms

Assignees:
Monarch Machine Tool Co. - Sidney, Shelby County, OH

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Oct. 26, 1988
Granted: Aug. 15, 1989

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Monarch Machine Tool Co.
Description:
Abstract

A spindle mechanism is capable of rotating for a rotative tool and is capable of being locked for mounting a nonrotative tool. First and second curvic couplings may be forced into engagement by a large hydraulic force which concurrently unloads a combined thrust and radial bearing at the outboard end of the support. This permits the spindle, when mounting a nonrotative tool, to be rigidly supported in a nonrotative condition. A smaller hydraulic force may be utilized to move the spindle axially inwardly which disengages the first and second curvic couplings and preloads the combined thrust and radial bearing providing a properly preloaded rotational mode of support when the spindle is mounting a rotative tool. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.

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