All of the images here are in the public domain in the USA, with sources as indicated.
Often the originals are too large to present online. Click (or right-click to download) on each image for a larger (if not as large as possible) version.
The images which serve as links to other documents on this site are described on the "About the Images" pages for those linked documents.
This is a photograph of some of the pump levers on the machine, showing the lack of relieving mechanisms in the linkage. These parts may break if you cycle the machine with the pot cold and swung in.
