I found instructions with both of my tracker bar cleaners.  I'll para-
phrase the instructions which appear on the Ampico box and on a sheet
for the Kleernote device (same pump, different distributors).  The
Ampico box shows a patent date of April 16, 1918.

 [snip -- This is the same data as reported in Digest 961207. ]

The Kleernote sheet says "There are thousands of Kleernotes in use in
every State of the United States and also in foreign countries.  We have
NEVER received a complaint against the efficient working of the pump."

Regards,¶
Rob DeLand¶
(deland_robert@macmail1.csg.mot.com)