The D.C. & U.
(Page 2 of 2)
While studying the patents, I noticed some interesting facts. To
begin with, the two patents that were registered show slight
differences in design. The first patent shows the engine, although
a 2-cycle, using an exhaust valve working off of the cross-head.
The second patent shows a traditional ported exhaust, which appears
to have been the more common of the two. The D.C. & U. cylinder
also was built in a rotary steam valve configuration. An old price
list is my only evidence to prove that this design once
Last, I noticed an interesting difference from the earlier
design of the cylinder. The patent design shows a D.C. & U.
patented carburetor. In later designs, and in Tillinghast sales
flyers, you can easily notice that the carburetor that was used was
one of B.D. Tillinghast's own design, one he used on his
Tillinghast gas cylinders.
The attached photo is a 1964 picture of a D. C. & U. This
picture was probably taken somewhere near McDonald, Pa., when the
engine was most likely pulled from service. The second picture is
from a Tillinghast sales flyer.
This has been an interesting and exciting project. Over the next
several months, I will continue to do research on two other
companies in my hometown of Washington, Pa. Interestingly enough,
these other companies were also builders of convertible engines. I
would love to hear from anyone who has a convertible engine, and
especially anyone that has or knows of a D.C. & U. or
Tillinghast engine. Feel free to contact me at the address below.
Also, if you have Internet access, be sure to log on to the OFES
web site at www.oilfieldengine.com. I will post additional
information and pictures of these great convertible engines.
Contact engine enthusiast Bill Tremel at: (724) 484-0311 or
e-mail at: firstname.lastname@example.org.
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