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US Patent: 9,431
Joseph Guild - Cincinnati, OH

USPTO Classifications:
144/75, 84/192

Tool Categories:
woodworking machines : joint making machines : mortising machines
woodworking machines : wood drilling and boring : mortising machines


James L. Haven & Co. - Cincinnati, OH
Lane & Bodley - Cincinnati, OH

Edward H. Knight
George H. Knight

Patent Dates:
Granted: Nov. 30, 1852

Reissue Information:
Reissued as RE333 (Dec. 11, 1855)

Patent Pictures:
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"Vintage Machinery" entry for Lane & Bodley
"Vintage Machinery" entry for James L. Haven & Co.
The inventor was partner in the large Cincinnati carpentry firm of Hinkle & Guild, innovators in pre-fabricated building. "Guild's Patent Mortising Machines, for Hubs and Square work" was listed in an ad for James L. Haven & Co. in an 1854 directory. The October 1890 issue of Industry says that Guild invented the "graduated stroke mortising machine", and the machine was subsequently manufactured by Lane & Bodley. The article also says that the graduated stroke mortiser design was widely produced by Cincinnati makers but no-where else as other failed to realize its advantages. Other (non-Cincinnati) makers used the "variable-stroke" design where the stroke must be equal both below and above the surface of the stock, whereas the graduated-stroke machine needs much less stroke above the surface.

According to the 1873 "Subject-matter index of patents for inventions issued by the United States Patent Office", this patent was granted an extension.

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