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GB Patent: GB-185,601,628
An improvement in the manufacture of band saws and other endless bands or hoops of metal
Patentee:
Robert Thomas Eadon - Sheffield, England

USPTO Classifications:

Tool Categories:
woodworking machines : machine and tool cutters : sawblades

Assignees:
Moses Eadon & Sons - Sheffield, England

Manufacturer:
Moses Eadon & Sons - Sheffield, England

Witnesses:
Unknown

Patent Dates:
Applied: Jul. 09, 1856
Granted: Dec. 24, 1856

Patent Pictures:
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"Vintage Machinery" entry for Moses Eadon & Sons
Description:
"This invention consists in binding a bar or rod of cast steel, or other metal suitable for the purpose required, into a circular form, and welding the ends thereof in order to insure a perfect joint; then in reducing the bar to the thickness required between rolls, whereby an endless band, whether for bandsaws, casks, hoops, or for other use, is produced, of uniform strength.

"The exact manner of carrying out the invention is as follows:—A bar of welding cast-steel having been prepared, of length, width, and strength suitable to the size of the saw, band, or hoop required, and of sufficient strength and weight to enable a smith to obtain a perfect weld, the same is welded into a hoop. This hoop is put into such a furnace as is ordinarily used in the saw trade, and, when heated red hot, it is placed between a pair of open-end rolls. The pressure exerted upon the rolls is regulated by a screw made to act upon the top roll: the alternate heating and rolling are continued until the hoop or band is reduced to the extent required. If intended for a band-saw, it is toothed with a bed and punch with the common press or fly; The teeth and back of the saw are afterwards filed.

"The saw-band or hoop is now folded up into several coils and put into a saw hardening furnace: it is heated red hot and precipitated into a cistern containing fish oil; when removed therefrom, the oil is partially wiped off, and the coil again placed in the furnace until the requisite temper is obtained. The saw-band or hoop is afterwards smithed, planished, or hammered, until it is free from twist and bends, and straightened on both edges. The saw-band is then ground and glazed in the ordinary manner, except that in turning over from one side to the other, the saw-hoop or band is turned inside out, so that both sides may be ground and glazed. Any irregularities or bends that have been caused by grinding are afterwards straightened on a wood block of lignum-vitae or other hard wood, by a smooth-faced hammer, so as not to cut or mark the body. The band is afterwards tempered by "blueing" in an ordinary blueing stove, in sand; any elasticity that hammering, grinding, etc., may have deprived it of being thereby restored. When the teeth have been shaped in the ordinary manner followed in the trade, the saw is ready for use."

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