Your oil dispenser is a Tokehim 358 introduced around 1925. Similiar ones on wheels were prictured in my first edition of the Gas Pump Identification book, but they were removed in the Revised edition to make room for actual gas pumps.
Your pump and the ones on wheels can also be seen, in color, on this page of my website: http://www.petrolianacollectibles.com/tokheim%20341.htm
Email me if you are interested in any of the literature that is listed.
Jack Sim
Author, 1st & 2nd editions of Gas Pump ID book, 3rd edition is now available at
www.gaspumpbible.comAir Meter ID book also available