That's not a Buckmann? I've got one just like it, cork safety valve too.
So what do we call them? That picture of the Ryder Large Horizontal looks
like it but the description says its cylinder action is double and valve
action is slide. I thought these are oscillating cylinders. Correct me.
That's a mistake on my website. It's an oscillating cylinder engine, designed by Ryder. I'll make the correction as soon as my hosting company gets the website back on line. I had to convert paper records to an online database, so a few typo's were inevitable. Part one of
the article explains about Ryder. When it's ready, part two will cover Buckman.