Photo Index - Ashton Valve Co. - pop safety valve

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:	Engine, Steam - Traction
Machine Size:
Submitted By:	Rick Ashton

Machine Specifications
Description/Model:	pop safety valve
Date of Manufacturer:
Serial Number:
Last Updated	4/28/2020 3:40:14 PM

Comments:

The Ashton Valve Company was created as a result of Henry Ashton inventing the "pop safety valve" in 1871. Boiler explosions were a common hazard and many died because of the lack of a dependable safety valve. Another factor that made the vale so popular was that after it "popped", releasing excess steam, it would shut down again in a few seconds which prevented the loss of too much steam.

Photo 1:

Comments: circa 1874 safety valve
Source: gift from a friend

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Photo 2:

Comments: 1872 patent
Source: google patents

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Photo 3:

Comments: 1896 catalog page
Source: personal collection

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Photo 4:

Comments: 1896 catalog
Source: personal collection

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Photo 5:

Comments: 1872 Boston Directory advert
Source: google books

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Photo 6:

Comments: post 1907 advert
Source: google books

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