The 1893 Duryea Automobile in the Museum of History And Technology
The 1893 Duryea Automobile in the Museum of History And Technology
Berkebile Donald H.
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Mr. Mitman was, at the time, curator of engineering in the U. S. National Museum. ] The two pistons were first pinned together into a single unit which wasprobably ringless, since it is believed the walls of the outer pistonwere too thin to admit rings. Because the piston no longer struck theexhaust valve, a short rod had to be screwed into the pistonhead; thispushed the valve shut at the completion of the exhaust stroke. Theremaining problem, the opening of the exhaust valve, was solved byscre...wing a device to the side of the cylinder which operated from thesidewise motion of the connecting rod. This device shifted a smallspacer between the piston and the striker arm of the exhaust-valve rod, permitting the piston to push open the exhaust valve. On alternatingstrokes the spacer shifted back out of the cylinder; therefore, nocontact was made between piston and striker arm. Sometime in February1893, the altered engine was successfully started. At last the transmission could be tested. Will Russell had come upstairsto watch the trial, and according to a statement by him, given April 30, 1926, Frank, standing to the right of the engine and behind the rearaxle, reached forward and with the combination tiller-belt-shifter, moved the belt into driving position.
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