Early this year, I received a call from Nick Kallas who was planning seminars and workshops for the Association of Tourist Railroads and Railway Museums convention, held this past year at the Illinois Railway Museum. Nick wanted ideas that would utilize some the specialized machines and facilities there. Knowing the IRM possesses a number of "McCabe Pnuematic Flangers", I immediately suggested a demonstration of one by the leading authority on their use: Gary Bensman of Diversified Rail Services. And oh, by the way, he could demonstrate the machine by making the firebox door sheet patch that we will need for No.97.
I asked IRM's Steam Department Foreman, Tom Schnieder if this was possible and Tom thought it was a fine idea. Now, for those of you who don't know, a McCabe is a machine designed to bend the edges of parts for boilers or fireboxes in either straight or curved shapes. They could be used to manufacture new boilers or make repair parts for old ones in odd shapes with steel thicknesses ranging from 3/8" to 1". It consists of a frame to which is attached a large air cylinder, which operates a straight rack, which engages a curved rack, to which is attached a die (straight or curved in a variety of sizes). A corresponding die is mounted on the frame. The steel to be shaped is held on frame with clamps. When the piston in the cylinder moves, the die bends the steel. Of course, many small bends are made rather than a few big ones.
|Gary Operating the McCabe Flanger|
For the demonstration, Gary explained how to lay out the part to be made (his layout lines can be seen on the patch), how to set up, and how to operate the machine.
|Section of No.97 Door Sheet Removed For Replacement|
Special thanks to Gary Bensman, Tom Schneider and Kjell Benner (who removed the old sheet from No.97 and transported everything from Connecticut to Illinois).
J. David Conrad
Chief Mechanical Officer