achines, to performingonly the one operation of addition. The machine.engravingsef which accompany this article, is capable of performing thefour fundamental operations of arithmetic—addition, subtrac-tion, multiplication, and division being executed with equalfacility and accuracy. The engravings… … An external rim or hoop, A, is fastened to a bifurcatedhandle at B, the bifurcations, C, extending up on each side ofthe frame, and forming, with the pieces, D, crosses, to whichthe stationary disks, E, are fixed. Beneath these stationarydisks is a revolving disk which turns on a central pivot,…
Patents · Iron · Consists · Assignor · Tho · Scientific American · Tube · Patent issued · Letters patent · Varnish room · Specific gravity · Tartaric acid · Sewing machine · Iron wire · Revolving disk · Gaseous fuel
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