Country
Counties
2 Matching Results
Results open in a new window/tab.
Results:
1 - 2 of
2
Vacuum-Regulator for Oil-Pumps.
Patent for vacuum regulator for oil pump. This device is simply constructed and easy to operate. It is an automatic cut-off in the vacuum of the pipe line to the pump.
Date:
March 12, 1918
Creator:
Hobb, James W.
System:
The Portal to Texas History
Pump
This patent is for pumps. This patent allows for the pump barrel to be readily disengaged from its normal positive engagement with the well tube for removal from said tube for repairs or any other reason.
Date:
March 19, 1918
Creator:
Perry, Sherman V.
System:
The Portal to Texas History