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Machinery Photo Index
Manufactured/Badged by:
Ashton Valve Co.
Boston, MA; Cambridge, MA

True Manufacturer:
Ashton Valve Co., Boston, MA; Cambridge, MA
Machine Specifications
Machine Class: Steam and Gas Engines
Machine Type: Other
Machine Size: 5"
Submitted By: Rick Ashton
Machine Specifications
Description/Model: Ashton quadroplex air brake gauge
Date of Manufacturer: possibly 1930's
Serial Number:
Last Updated 5/2/2020 10:20:14 PM

Comments:
This quadruplex gauge allowed 4 different train pressures to be observed at the same time. It was available with or without a built in light.

Photo 1:

Comments: Quadruplex air brake gauge
Source: personal collection
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Photo 2:

Comments: 1920's catalog
Source: personal collection
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Photo 3:

Comments: 5" quadruplex air brake gauge
Source: Proceedings of the Air Brake Assoc 1922
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Photo 4:

Comments: Train shed cyclopedia #40 part 1
Source: personal collection
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Photo 5:

Comments: 1930 mechanical drawing
Source: Norfolk and Western Historical Society
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Photo 6:

Comments: patent 2,137,972
Source: google patents
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