US Patent: 78,565
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| Improvement in vises
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Patentee:
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| Quimby S. Backus (exact or similar names) - Winchendon, MA |
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Patent Dates:
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| Granted: |
Jun. 02, 1868 |
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Patent Pictures:
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Carl Matthews
"Vintage Machinery" entry for Union Vise Co.
"Vintage Machinery" entry for Backus Vise Co.
"Vintage Machinery" entry for Millers Falls Co.
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Description: |
| This vise was manufactured by the Union Vise Co., which lost their plant in an 1871 fire. They sold their vise line to the Backus Vise Co., who suffered their own fire in December 1871. Their landlord, the Millers Falls Manufacturing Co., rebuilt. The Backus Vise Co. found itself in the enviable position of demand considerably exceeding their ability to meet it. In January 1873 they merged with the Millers Falls Manufacturing Co. to form the Millers Falls Co., which continued manufacturing the vises for several years."When articles of wood, metal, or other material are held in place while being operated upon between the jaws of the various vises of the ordinary construction, the shavings or filings which result therefrom fall upon the screw-shaft by which the movable jaw is operated, and are carried forward into its screw-nut, thereby causing it to be speedily worn away, and frequently so obstructing both the screw-shaft and its nut as to require cleaning before the movable jaw can be made to slide in its grooves, as required."To overcome these difficulties is the object of my invention, which consists in one or more tubes, or one or more segments of a tube or tubes, or other covering for shielding the portion of the screw-shaft between the jaws, exposed to the shavings or filings, or for enclosing or covering the top only, or both the top and sides, of the portion of the screw-shaft thus exposed..."Compare this patent to 91,065, which further refines this design. |
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