Inside Out Library · Explore

Scientific American, Vol. 74, No. 21 (1896) (1896)

leaf 7

An illustration from Scientific American, Vol. 74, No. 21 (1896), 1896, leaf 7
ceive it in the body of the vertical bar. The device for reducing the friction of the toolof a slotting holder with its tool can be rotated by means of the machine on the return stroke across a piece of work. writing and adding machines, It is the property of As ordinarily made, the tool flap is of… … TOOL HOLDER ATTACHMENT, cent of argon, while the presence of helium in this gas without printing or to print without adding. Mis- in very small quantity was probable, but not certain. takes, if made, can be seen at once, and corrected as The interesting question concerning the existence of easily…

Internet Archive · Public domain (published before 1931). Free to use for anything.

More pictures from Scientific American, Vol. 74, No. 21 (1896)

More like this