US Patent: 3,156,127 - Vibration reducing device and method


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US Patent: 3,156,127

Vibration reducing device and method

Patentee:

David D. Pettigrew (exact or similar names) - Pittsburgh, PA

USPTO Classifications:

403/362, 474/44, 474/8

Tool Categories:

metalworking machines : metalworking machine mechanisms : metalworking power transmission

Assignees:

Rockwell Mfg. Co. - Pittsburgh, PA

Manufacturer:

Rockwell Mfg. Co. - Pittsburgh, PA

Witnesses:

Unknown

Patent Dates:
Applied:	Aug. 02, 1962
Granted:	Nov. 10, 1964

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Delta Specialty/Delta Mfg. Co./Delta-Rockwell/Rockwell Intl.

Description:

The invention is intended to prevent chattering of the belt and pulley in a variable-speed belt drive system. Patents 2,233,822 and 2,604,794 are specifically mentioned from suffering from this chattering problem. The invention itself involves "fixing a resilient insert having a low coefficient of friction between the movable half of the drive pulley and the drive shaft. It has been found, surprisingly, this eliminates the chattering without restricting the movement of the pulley half along the drive shaft."