Also spur wheel. [SPUR sb.1] A gear-wheel that has cogs or teeth on the periphery, projecting radially from the center; a cog-wheel.
1731. Phil. Trans., XXXVII. 10. The Spur Wheel.
1764. J. Ferguson, Lect., 78. A cog or spur-wheel may be placed upon each side of the water-wheel.
1805. R. W. Dickson, Pract. Agric., I. Pl. xiv. On the axle of this water-wheel is fixed a large spur-wheel … of 160 cogs.
1861. Smiles, Engineers, III. 97. The power of the two cylinders was combined by means of spurwheels.
1884. W. H. Greenwood, Steel & Iron, xi. 215. A spur-wheel, gearing into a pinion which is connected with a train of gearing driven by a small steam-engine.
fig. 1870. Mrs. Riddell, Austin Friars, iv. Love sets in motion the spur-wheel which turns all the other wheels of existence.
