Here's one I don't think was ever built, has a rotary pump.

coldspaces 27 Cubic Foot Posts: 3,091	Here's one I don't think was ever built, has a rotary pump. Jan 8, 2021 3:41:36 GMT ckfan likes this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by coldspaces on Jan 8, 2021 3:41:36 GMT patents.google.com/patent/US2102391A/en?inventor=Steenstrup+Christian&page=3
	I don't own too much old stuff,I just temporarily take care of it for its next owner. "Hell, there are no rules here--we're trying to accomplish something!" Thomas A. Edison We never really grow up, we just learn how to act in public.

ckfan Administrator Posts: 2,872	Here's one I don't think was ever built, has a rotary pump. Jan 9, 2021 13:14:40 GMT via mobile Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by ckfan on Jan 9, 2021 13:14:40 GMT Looks kinda sorta similar to the CA.
	I have to keep telling myself that this is a healthy addiction! It is all in the name of preserving and enjoying these wonderful machines.

turbokinetic 27 Cubic Foot Posts: 3,157	Here's one I don't think was ever built, has a rotary pump. Jan 10, 2021 3:49:28 GMT ckfan likes this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by turbokinetic on Jan 10, 2021 3:49:28 GMT Two vane pump. Interesting. Would probably have been for a low pressure system; maybe if methyl formate hadn't had so many drawbacks?