Steam & Excursion > ORHC - turntable builder's plates

At some point these cleaned builder's plates will be re-installed on the turntable bridge.  Replicas may be used in an exhibit on the fence surrounding the pit.   Arlen



Edited 1 time(s). Last edit at 02/08/23 23:37 by asheldrake.

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Great to see these as my understanding of the history of the bridge is limited to a couple of dates in the 1920s.  It'll be insteresting to find out more information about the history.  You'd think that having volunteered at the ORHC since 2012, I would know more about the history of the TT but I guess I've always concentrated more on locomotive history.

Thanks for the picture Arlen.



Edited 1 time(s). Last edit at 02/09/23 08:56 by Jsporseen.

This project continues to be fascinating in this day and age. Thank you Arlen and JSP for keeping us current.

I would contribute to a fund that would cast a new, matching,
similar "date of Record Plate"  to commemorate the complete,
2023, reconstruction of the TT and the new TT pit.

it would be fitting to add the new plate, similar in style,
to these  existing plates, as they get attached to the TT.

What do you think?

Wes Camp



Edited 1 time(s). Last edit at 02/09/23 11:45 by wcamp1472.

The patent shown on one of the plates, "Continuous Turntable," refers to the concept of supporting the bridge at 3 or more points, not just at the center bearing as had been common with earlier turntables.

This concept is clearly described in the booklet Standard Railway Turntables, published by the American Bridge Company in 1923:

https://digitalarchives.powerlibrary.org/papd/islandora/object/papd%3Apcalo-ishc_2852?search=%2522standard%2520railway%2520turntables%2522
 

Elesco, thanks for American Bridge link.

It deserves a display board of it;s own with the porgression of pictures that have been posted. Quite an eye
opener to see a 1924 turntable being rebuilt and installed new in 2023.

Out