US Patent: 973 - Grant's annular saw


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US Patent: 973

Annular saw for sawing timber
Grant's annular saw

Patentee:

Robert Grant (exact or similar names) - Baltimore, MD

USPTO Classifications:

30/389, 83/491

Tool Categories:

woodworking machines : circular saws : annular saws

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

C. H. Wiltberger

John W. Hubbard

Patent Dates:
Granted:	Oct. 08, 1838

Patent Pictures: [ 1 | 2 ]

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Description:

Invention is for a circular saw where all but the rim of the saw is cut away. The saw is driven and guided by beveled rollers. For a description of why someone might want a saw like this, see the description for patent 86,407.

Other annular-saw patents include patent 86,407, patent 108,370, and patent 112,156.