spur gear

American  

noun

Machinery.

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

---

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

---

Etymology

Origin of spur gear

First recorded in 1815–25

Example Sentences

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

In electric cranes the motor is connected to the barrel, either in a similar manner by spur gear or by worm gear.

From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 6 "Coucy-le-Château" to "Crocodile" by Various

The dynamo is placed in the center of the car, beneath the floor, and through intermediate spur gear drives by a steel chain on to one axle only.

From Scientific American Supplement, No. 388, June 9, 1883 by Various

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

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