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US Patent: 4,941
Job Sheldon - New Haven, CT

USPTO Classifications:
144/122, 144/128

Tool Categories:
woodworking machines : cutter head machines : wood planers


Not known to have been produced

R. Fitzgerald
P. R. Law

Patent Dates:
Granted: Jan. 26, 1847

Patent Pictures: [ 1 | 2 ]
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"Vintage Machinery" entry for Job Sheldon
From the 1846-12-19 Scientific American: "Mr. Job Sheldon, of New-Haven, has invented, and taken measures for patenting a planing machine on an entirely new principle and that will probably supersede those on the Woodworth principle. The boards or planks to be planed, are carried forward by an endless chain carriage of peculiar construction, and the planning cutters—three in number,—are arranged to vibrate laterally, cutting with oblique edges across the surface, which is thereby reduced to a smooth and perfect plane. The cutters have double edges, and by slight alternate changes of position, cut in both directions; and the boards are tongued and grooved by another peculiar appendage of machinery, at the same operation. We purpose to give a more full description when we can conveniently procure a suitable engraving." No such follow-up has been found.

From the 1847-01-23 issue of "Dwight's American Magazine": NEW PLANING MACHINE.—Mr. Job Sheldon, of New Haven, Ct., has invented a machine for planing boards, in which is combined more originality of mechanical movement, with judicious proportion and application, than we have seen in any new invention within the year past. In this machine, the inventor has boldly struck out on entirely new principles of operation, and there appears nothing about the machine which bears any resemblance to those of Woodworth, Daniels, or any other in use. It carries a series of planing cutters, which work with a reciprocating motion, cutting transversely, but with oblique edges, in each opposite direction. Measures are already in progress for securing a patent, and the invention will, in some measure, relieve this branch of industry from the monopoly."

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