Patent Model - Improvement in Machines for Cutting Files

Maker and role
James Jervis (b.1834, d.1909), Patentee
Production date
Oct 11 1864
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Object detail

Iron, brass, wood
11 x 12 1/4 x 6 3/4" (27.9 x 31.1 x 17.1cm)
Jervis's patent consists of "a new and useful Improvement in Machines for Cutting Files..." In the patent he said: "Files generally are either flat, round, half-round, or triangular, and have a taper both in their breadth and thickness. Whatever the width of the file the depth of each cut must be the same; and where files are cut by machinery the intelligence of the workman, which secures this uniformity where files are cut by hand, must be supplied by mechanical contrivances, and the great merit of my invention consists in the mode by which I make the form of the file itself regulate the force of the blow with unerring accuracy, while at the same time the solidity of the file for each successive stroke is secured." (Patent number 44,633)
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