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

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

From Practical Mechanics for Boys by Zerbe, James Slough

The properties of a hypocycloid were recognized by James White, an English engineer, in his geared design which employed a pivot located on the pitch circle of a spur gear revolving inside an internal gear.

From Kinematics of Mechanisms from the Time of Watt by Ferguson, Eugene S.

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

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 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