Cog-wheel Small 320×200 Medium 640×400 Large 1024×640 Download Tiff Original 2400×1500 | (391.5 KB) Description "A small projection in machinery, used to impart motion. C. wheel, a wheel having cogs on its circumfrence." — Williams, 1889 Keywords cog, machine, projection, wheel Galleries Gears Source: H. L. Williams The World's Cyclopedia (New York: World Manufacturing Co, 1889) 120
