spur gear

American  

noun

Machinery.

1. a gear having straight teeth cut on the rim parallel to the axis of rotation.

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spur gear British  

noun

1. a gear having involuted teeth either straight or helically cut on a cylindrical surface. Two such gears are used to transmit power between parallel shafts

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Etymology

Origin of spur gear

First recorded in 1815–25

Example Sentences

The motion of the drum is transmitted by spur, gear, or otherwise as may be required, to give the requisite speed.

From Scientific American Supplement, No. 455, September 20, 1884 by Various

The boiler was of cast-iron, with a one-cylinder engine, spur gear and a fly-wheel on one side.

From Lectures on Popular and Scientific Subjects by John Sutherland Sinclair, Earl of Caithness

Now a spur gear, as well as a pinion, has three diameters; one measurep.

From Practical Mechanics for Boys by Zerbe, James Slough

There are two spur gear changes, either of which may be used and which give a very wide range.

From Illustrated Catalogue of Cotton Machinery by Company, Howard & Bullough American Machine

The flange and web have an average thickness of 4 mm. or 5⁄32′′ and the web is drilled full of holes interposed between the spur gear mounted on the cam-shaft and the cam-shaft gear.

From Aviation Engines Design?Construction?Operation and Repair by Pag?, Victor Wilfred