Corliss steam engine valve overview

By the 1840's, Providence RI was the epicenter of steam engine manufacturing and development. From this flurry of activity came the most significant improvement since those of James Watt. In 1849 George Corliss of Providence patented the first version of his revolutionary valve gear. His technology went on to be licensed and adopted by steam engine manufacturers around the world as it more than doubled the efficiency of any previous designs. Here we take a brief overview of some of the details of what made it different from its predecessors. Soon we will have another video with a bit more technical information on this incredible leap forward.
newsm.org/
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[@mearalain3006]

Awsome explanation. We need more.

[@1943L]

Now I understand. Mind you in use they are clacking noisy valves compared to normal slide one.

[@ronblack7870]

i actually love the sound of the clicking valves

[@bobvines00]

Please increase the video resolution choices if at all possible. At least one of your earlier videos for the 2020 steam-up permits up to 1080p, which made it much easier to better understand what you were showing. (I understand that it takes a lot more time to upload the high resolution videos, but please do try to upload them!)
This morning was the first time that I had ever heard of your museum. I intend to "attend" your 03 Oct steam-up! :) I know of no museum or exhibit like you have down here in north-central Florida. The closest (small) steam engine to me (that I know of) is in Barberville, but is not run due to its boiler not being certified and no $$$$ to inspect & certify it. :(

[@newenglandwirelesssteammus4167]

Thank you Bob, I'm glad you found us. We've existed for over 50 years and are just making some changes to try and connect with a broader audience, particularly with the virus concerns this year. I'll check on the resolution issue, it wasn't something intentional. We're learning too! We're glad to have you on October 3rd this year for our virtual steam up and live chat!

[@peteengard9966]

Were any stationary engines built with poppet valves? I know of a few locomotives built with them.

[@newenglandwirelesssteammus4167]

Yes, that was another common type, particularly in the intermediate stages of large triple expansion pumping engines.

[@Raw774]

I believe those were called uniflow steam engines

[@nealblackburn8628]

i think there would be a lot of wear with all that snapping and banging of the corliss valve system ...how long did they last

[@blc6464]

The sawmill in our little town(Callander Ont) used the same engine for a 100 years

[@blc6464]

Please dont say stolen. Good thing G Corliss didnt meet T Edison it would be the Edison valve now

[@laaity]

The falve gear looks like a horse