General Category > Chatterbox
Penn Valve Gear???
Jasonb:
The first image of the 1890 engine looks promising
https://gracesguide.co.uk/John_Penn_and_Sons
Michael S.:
Hello Paul,
Here are a few pictures of the engine.
Google tried to translate the description.
There is a Netherlands blueprint and I think it is a similar control of the cylinder. I only have the blueprint on paper.
Greetings Michael
paul gough:
Thank you Michael S. There are some confusing attributes in all the information flowing to me. Your drawing appears to be two eccentrics and something similar to Stephensons valve gear, the stationary engine in the video shows one eccentric but I am not sure it is reversable but there is another sheave on the left side of the crankshaft without gear attatched, maybe for setting up for opposite rotation. The 'Diesbar' engine I assume is reversable but has one eccentric per cylinder, though there is an eccentric disc next to the actual eccentric. The valve drive seems on the engines seems similar to the McOnie engine, but it is the reversing/variable cut off part of the gear that I am finding difficulty in coming to grips with. As it is now 5am here I need to go to bed, my brain is hurting.
Chris, I placed an order for the book, thanks again for passing on the details. Regards, Paul Gough.
Michael S.:
Yes, now I notice it too. The engine of the "Diesbar" has an eccentric and the other engine has 2 eccentrics.
http://www.youtube.com/watch?v=YZVwQVIXlh8
http://www.youtube.com/watch?v=gRT1-WICJUc
crueby:
Yes, the Diesbar uses a slip eccentric to do the reversing, which makes it a little harder to understand just from the drawings. That book shows the version just like the Diesbar. Michael, glad you posted those videos, I was still looking for them again.
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