What Is It?

| July/August 1972

We have an engine we are in the process of restoring for our show, August 19--20 at Butterfield, Minnesota. I'm looking for a little assistance on this engine. The following is on the nameplate: 'The Plunket Jr. mfg. by Gas & Gasoline Engine, J. E. Plunket, Chicago, III. No. 141 Patent Applied For'.

We wonder if anyone else has one. Does anyone have the idea of what color it was? Please help us if you can. Readers.

Engine which I acquired in fall of 1971. I have sent pictures of it to several sources in the United States. Some feel it may have been used on a railroad section gang 'jigger' car. I would like to know name and address of manufacturer, horsepower and speed, also if a pulley were used and on which side of engine was it fastened? Does not appear to have used a starting crank as there is no place for one to fit. Also was a cooling fan ever used to assist in cooling cylinder and head? I do not think it is an 'English' engine.

The Facts: Sheffield '39', 2 cycle, air-cooled, used buzz coil for ignition, equipped with mixing valve (not float type), Bore 4', Stroke 4', exhaust 1?' pipe, cylinder unbolts from block like on 'Lawn Boy' engine, flywheels 16' diameter with 2?' face width, uses advance & retard of spark to control engine speed. Engine was painted bright red on all parts except on fin area of cylinder and head; on that area it was painted black.

Casting Numbers: A415012 on Inspection hole cover plate for connecting rod cap, A21552 on advance-retard spark lever, A21547 on 1 flywheel, A1928 on underside of cylinder, A21550 on exhaust manifold, A21578 on mixing valve, A1930 on adjustable rails (sliding cast iron base). Does anyone know what company used these casting numbers? I will try and answer all letters.

I was told by an 87 year old man that when he was a boy, they needed to go to Sheboygan, Wisconsin and the people owned a hardware store and they sold this engine to power a sewing machine and victrola.


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