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

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

From Practical Mechanics for Boys by Zerbe, James Slough

The magnetos are very accessibly located on a bracket on the spur gear cover.

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

As for the engine, had it been a delicate watch, Tom could not have scrutinized each valve, wheel, cam and spur gear more carefully.

From Tom Swift and His Sky Racer, or, the Quickest Flight on Record by Appleton, Victor [pseud.]

The crank shaft carries a large spur gear which meshes with a pinion in the end of the armature shaft, so that the user may cause the armature to revolve rapidly.

From Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. by Miller, Kempster

If the cam-shaft is parallel to the crank-shaft, simple spur gear or chain connection may be used to turn it.

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