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


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US Patent: 6,363,822

Parallel arm scroll saw and drive mechanism with visual speed indicator apparatus

Patentee:

Xun Lei (exact or similar names) - Cheswick, PA

USPTO Classifications:

83/58, 83/662, 83/783, 83/DIG.001

Tool Categories:

woodworking machines : reciprocating saws : scrollsaws

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:

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

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.