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US Patent: 6,363,822
Parallel arm scroll saw and drive mechanism with visual speed indicator apparatus
Patentee:
Xun Lei - Cheswick, PA

USPTO Classifications:
83/58, 83/662, 83/783, 83/DIG1

Tool Categories:

Assignees:
Delta International Machinery Corp. - Jackson, TN

Manufacturer:
Delta International Machinery Corp. - Jackson, TN

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 16, 1999
Granted: Apr. 02, 2002

Patent Pictures:
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"Vintage Machinery" entry for Delta Manufacturing Co.
Description:
An arm configuration used in a scroll saw that allows the two arms to move substantially independently of one another and having a retaining mechanism which isolates one of the arms if one arm becomes disengaged from the saw blade or the saw blade breaks. A speed indicator that allows the user to easily determine the speed of the saw visually. A drive assembly including a pulley system that provides for increased torque and the saw to have a wide range of speeds.

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