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Scientific American, Vol. 91, No. 19 (1904) (1904)

leaf 4

An illustration from Scientific American, Vol. 91, No. 19 (1904), 1904, leaf 4
unching machine, where watch. A portable variation of the Webb speed indi- Building at St. Louis is an exhibit by the United cator has been arranged to give at a glance from a the blanks are punched out at the rate of 200 per min- States Mint of the complete process of coining money. ute for $20… … recently perfected and placed on the mar- A NOVEL AUTOMOBILE SPEED INDICATOR. ket by Mr. Hartwell W. Webb, a young in- ventor of this city, who is possessed of a number of revolutions, per minute. The blower and good technical education coupled with con- indicator are each provided with a handle,…

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