Ashton Valve pop safety valve 1871

In 1871 Henry Ashton invented the first successful safety valve for boilers. It was a tremendous help in preventing boiler explosions, a serious problem in the 1800's. For over 100 years, the company produced safety valves for locomotive, marine, and stationary boilers. Attached are a few pictures of the valve and it's history.

Here's a picture of an actual circa 1874 safety valve. It was a very generous gift given to me at a Steam show by a former Crosby employee.

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Here are a few ads featuring the safety valve.

Here's a locomotive safety valve article from 1917.

These are pages taken from an old Ashton Valve railroad instruction book.

A couple of pop valves from my collection. They were produced for over 100 years.

A few more safety valve advertisements.

ANd a few more.

Some catalog info.

More catalog info.

Yes, more.

These valves could be repaired along with most Ashton products.

Ashton safety valve circular 56A

And one more.

Train Shed Encyclopedia had an article about safety valves in a 1927 publication.