Cog Wheel Small 320×110 Medium 640×221 Large 1024×353 Download Tiff Original 2400×827 | (513.7 KB) Description A wheel having teeth or cogs, used in ransmitting motion by enguaging the cogs of another similiar wheel or a rack. Keywords gear, spur wheel Galleries Gears Source: William & Robert Chambers Encyclopaedia - A Dictionary of Universal Knowledge for the People (Philadelphia, PA: J. B. Lippincott & Co., 1881)
