Strange Oiler

Below are some pictures of an unusual (to me) oiler that I am trying to figure out what it was originally used for. There is a central plunger that appears to actuate a pump within the glass chamber and also a small cam action lever that seems to work like the on/off valve on a typical engine or machine drip oiler. The metal cylinder has a gauge with markings I have never seen before.  The metal parts all appear to be nickel plated brass.



Identification made - This has been determined to be a pump to operate a friction clutch to control the speed of a large fan in a building ventilation system.  The pump portion would adjust the pressure on the clutch plates to change the fan speed.


Clicking on a thumbnail will double its size and also bring up a link for the original high resolution (1 - 3 MB) image.
















Updated: April 2, 2010

laser 1710
laser 1710