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US Patent: 200,218
File Cleaner
William T. Nicholson - Providence, RI

USPTO Classifications:
132/76.4, 15/105, 15/106

Tool Categories:
industrial tools : files
metalworking tools : files

Nicholson File Co. - Providence, RI

Not known to have been produced

I. Knight
Thomas F. Cosgrove

Patent Dates:
Applied: Dec. 06, 1877
Granted: Feb. 12, 1878

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for W. T. Nicholson
My invention consists, mainly, in a file cleaner provided with a bristle-clad surface on one side, a wire-toothed surface on the other side, a scoring-awl, and a convenient handle. It further consists in a file cleaner provided with a scoring-awl, which is housed and secured by a spring in the body of the cleaner, for affording a convenient and ready means, whereby on occasion such scores or cuts in a file as cannot be opened by the cleaner brushes may be thoroughly plowed or scored.

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