Oil Field Engine News

Bessemer by the Book


| January/February 2004



Bessemer-Duplicate Parts

The information in the table below comes from Bessemer-Duplicate Parts. This undated manual lists specifications 1 thought would interest readers, as it applies to all regular Bessemer engines. Bessemer cylinder outfits (the kit to make what is commonly known as a half-breed engine) were only built in 8, 12 and 15 HP models. All measurements are in pounds and inches.

Another undated Bessemer manual, A Manual on the Care and Operation of the Bessemer Gas Engine, had this to say about the company's cylinders.

'Cylinder outfits 8, 12 and 15 HP, are used to convert steam engines of 12-inch stroke into gas engines by replacing the steam cylinder with a Bessemer gas cylinder of 6-, 7- or 9-inch bore, 12-inch stroke, and using the steam bed cross-head, crank and parts and substituting a Bessemer clutch for one flywheel.'

The Bessemer parts manual lists the Judson class 'A' governor as Bessemer's standard-issue governor for its engines.

'Used on open case oil field engines standard for 8, 10 and 12 HP ... standard for 20 and 22 HP ... standard for 25, 30 and 35 HP engines.'

Many collectors find that oil field engines flood easily if a rich mixture of gas is used when starting. The operator's manual sheds some light on this subject: