THE MINNEAPOLIS THRESHING MACHINE COMPANY


| March/April 1997



Minneapolis

Top ViewShowing Construction of MINNEAPOLIS Double Cylinder Engine on Direct Flue Boiler

Sent to us by Larry Creed, R.R. # 13, Box 209, Brazil, Indiana 47834. Taken from advertising material of Minneapolis Threshing Machine Co.

This is the only photograph I have seen of a Minneapolis double cylinder two stack steam engine. The picture was taken by a Mt. Olive, Illinois, photographer. (Mt. Olive is about 40 miles northeast of St. Louis, Mo.) The threshing machine also appears to be a Minneapolis. The flywheel of the steam engine is almost shiny from constant use. The twin stack concept did not function as well as Minneapolis Threshing Machine Co. intended, and the double stack engines were refitted with a single stack. Thanks to Andy Craig of Vandalia, Illinois, for the use of his photograph. I have some factory information on the Minneapolis double stack engines that I think you will find interesting.

The Minneapolis Double Cylinder Engine, mounted on Direct Flue Fire Box Boiler, is built in five sizes, viz., 18, 22, 26, 30 and 35 Horsepower. They are built to burn wood, coal or straw, as desired.

Each cylinder and guides are made in one solid casting, and set parallel to each other. They are attached to a heavy bed plate and heater frame (cast in one piece) which is securely bolted to the top of the boiler.

It is equipped with a very heavy, forged steel crank shaft, carefully turned and nicely fitted in bab bitted boxes. On the right end of this crank shaft is fastened a very heavy flywheel, with our own patent Friction Clutch, one of the most essential features on any traction engine. Those who do not equip their double cylinder engines with a friction clutch should tell why an engine is better without a friction clutch than with one.

On the opposite end of the crank shaft we have the simplest and most positive and only eccentric pump attached to any double cylinder engine built. This eccentric pump is our own device, and is guaranteed to do the work, under all circumstances. It can be regulated to feed the amount of water required, and can be adjusted to pump continuously, thereby feeding the water to the boiler as fast as it is evaporated. This will allow the heaters to heat the water to a high temperature before entering the boiler. The water is fed into the boiler on both sides, by first passing through a separate heater on each side. Every engineer who has examined this device pronounces it without an equal and the best pump ever adopted.