US Patent: 1,372 - Improvement in circular saws


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US Patent: 1,372

Improvement in circular saws

Patentee:

Jonathan Gove (exact or similar names) - Fayetteville, NC

USPTO Classifications:

83/841

Tool Categories:

woodworking machines : machine and tool cutters : cutters

woodworking machines : machine and tool cutters : insertable saw teeth

woodworking machines : circular saws : insertable saw teeth

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Edmond Maher

William P. Elliott

Patent Dates:
Granted:	Oct. 16, 1839

Patent Pictures:

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Description:

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 insertable 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 insertable teeth (see patent X3,183, issued 1820, for what is generally considered the earliest patent for insertable saw teeth).