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- A governor patent history book.
- Documenting governor contraption patents, one page at a time.
- How does a pneumatic governor operate?
- The latest governor project is...
- What is it?
- A pneumatic governor contraption!
- Ready to take out and document.
- A 1960's Davey Compressor Company's pneumatic engine governor.
- Name plate data.
- Engine side of the governor.
- Engine side of the governor.
- Right out of the box.
- Another view.
- How does this contraption work?
- Ready to degrease the unit and disassemble the contraption.