Article on Jacobs-Shubert firebox test in NBIC Bulletin

Mike Tillger · **Posted:** Mon Dec 26, 2011 11:10 am

http://www.nationalboard.org/SiteDocume ... s/FA02.pdf
Article starts on page 10

Mike Tillger

whodom · **Posted:** Mon Dec 26, 2011 11:44 am

The entire report referenced by this report is available at google books:

http://books.google.com/books/about/Tes ... 9MAAAAMAAJ

Frisco1522 · **Posted:** Mon Dec 26, 2011 1:09 pm

For some reason the Frisco was a fan of the Jacobs-Shupert boiler in it's early days. They had some 2-8-0s, 10 4-6-2s and 60 2-10-2s.

whodom · **Posted:** Mon Dec 26, 2011 1:51 pm

The outcome of the testing is fairly amazing. Basically, the testers could NOT make the Jacobs-Shupert fail no matter how low the water level got.

According to the article, it was later found these fireboxes were susceptible to cracking due to scale build-up near the riveted joints. These cracks were virtually impossible to repair at the time which I suppose would require disassembly of the firebox and replacement of the entire cracked U-shaped segment.

Perhaps if they'd come along a few years later when good water treatment was available and electric welding was available for fabrication and repairs, they'd have been successful.

Bob Davis · **Joined:** Sat Aug 28, 2004 3:25 am **Posts:** 1025

And if a football fan friend asks, "Why is the Purdue team called the Boilermakers?" I'll have a ready answer.