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US Patent: 1,372
Improvement in circular saws
Jonathan Gove - Fayetteville, NC

USPTO Classifications:

Tool Categories:
woodworking machines : machine and tool cutters : cutters
woodworking machines : machine and tool cutters : insertible saw teeth
woodworking machines : circular saws : insertible saw teeth


Not known to have been produced

Edmond Maher
William P. Elliott

Patent Dates:
Granted: Oct. 16, 1839

Patent Pictures:
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The improvement is the use of expansion slots in the circular-saw disk, running from the periphery inwards some distance towards the center. Also of interest is that the patent drawing shows insertible saw teeth. These were not claimed in the patent so they must have been an old idea at the time, but this is a very early mention of insertible teeth (see patent X3,183, issued 1820, for what is generally considered the earliest patent for insertible saw teeth).

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