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Scientific American, Vol. 43, No. 24 (December 1880) (1880)

leaf 14

An illustration from Scientific American, Vol. 43, No. 24 (December 1880), 1880, leaf 14
$tmttiiu %mtrian. December ii, 1880.] 381 … PROPOSALS FOR MAIL By their use a crooked file may be utilized as well as a straight one, and both are made to do better execution in SUPERIOR SUBSTITUTE FOR WOOD ENCRAVINC. filing broad surfaces than has hitherto been possible. LOCKS. No. 4 holds files 12 to 14 in. long. Price 75c. each. J. C.…

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