Answers to December 2009 Mystery Tools

What-Is-It?

Lubricating device for leaf springs
C. Lubricating device for leaf springs, as identified by Gailey Henderson, Williamstown, W.Va.; Buck and Cathy Evans, Greenville, Ill.; and Alan Duffield, Browns Valley, Minn. See patent 1,084,181 for a similar piece (next image). 
Photo submitted by Edward Sindt