A-Z engines



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Waterloo, Iowa

Company: Associated Manufacturers Co., Waterloo, Iowa

Model: Chore Boy

Year: Circa 1923

Horsepower: 2

Bore: 3-3/4-inch

Stroke: 5-inch

Flywheel diameter: 18 inches

Flywheel width: 2 inches

Governing: Hit-and-miss

Ignition: Low-tension igniter with rotary magneto

Unique features: This is a contract engine for the Wonder Cement Mixer Company. The gas tank for the this engine is mounted in the base. Wonder upgraded the horsepower from 1-1/2 to 2 HP before 1924 when Associated went to the Iowa Oversize rating.

Dean and Helene Suhr
3525 E. Hawser St.
Tucson, AZ 85739


Middleton, Ohio

Company: Middleton Machine Co., Middleton, Ohio

Horsepower: 6

Bore: 6-inch

Stroke: 8-inch

Flywheel diameter: 28-1/2 inches

Flywheel width: 2-13/16 inches

Governing: Hit-and-miss

Ignition: Battery and buzz coil, and auto sparker

Unique features: Electric starting

Michael Perry
2497 Sue Ann Lane
Flint, MI 48507


Milwaukee, Wis.

Company: Worthington Pump & Machinery Corp., Milwaukee, Wis.

Year: 1923

Serial number: B39925W

Horsepower: 2-1/2

Bore: 4-inch

Stroke: 5-inch

Flywheel diameter: 20 inches

Flywheel width: 2-1/8 inches

Governing: Throttle-governed

Unique features: Sold by Agar Cross & Co. Ltd. in Argentina, Buenos Aires; all original paint, Argentine decal, cast iron muffler and pulley.

Boris Heshka
53080 Range Road 223
Andorossan, Alberta, Canada
T8E 2M3


Freeport, Ill.

Company: Ziegler-Schryer Co., Freeport, Ill.

Year: 1909-1911

Serial number: 40548

Horsepower: 1-1/2

Bore: 3-1/2-inch

Stroke: 4-1/2-inch

Flywheel diamter: 17 inches

Flywheel width: 1-1/2 inches

Governing: Hit-and-miss

Ignition: Low-tension coil (igniter)

Unique features: Dual tags - Duplex Mfg. Co. tag was never stamped with serial number, speed or HP; one of two 1-1/2 HP known

Jim White
7821 Dewberry Lane
Cedar Hill, MO 63016

You'll notice that we've reached the end of the alphabet but we'd like to go from A-Z again. If you have an engine manufactured in a state or country beginning with letters A-C, and would like it featured in A to Z, please send it to Gas Engine Magazine, 1503 S.W. 42nd St., Topeka, KS 66609 • cwilliams@gasenginemagazine.com