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US Patent: 590
Saw for Sawing Ice
John Barker - Cambridge, MA

USPTO Classifications:
30/166.3, 56/164, 83/855

Tool Categories:


Not known to have been produced

James W. Fenno
Elisha Burbank

Patent Dates:
Granted: Feb. 03, 1838

Patent Pictures:
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Patented item is the design and construction of the teeth. The front edge of the tooth is longer than the rear edge and the rear angle is sharper than the front angle. The front edge of the tooth is thicker than the rear edge. Finally, the at the end of the saw is an "imperfect tooth" without a cutting edge and used to serve as a shoulder for the first cutting tooth.

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