Eisenhuth Horseless Vehicle Company
Eisenhuth Horseless Vehicle Company was a manufacturer of Brass Age automobiles who were originally based in New York City. In 1902 the company purchased the Keating Wheel and Automobile Company and established manufacturing operations in Middletown, Connecticut. During 1903, the company merged with the Graham Fox Motor Car Company, absorbing that firm and expanding operations in Middletown.
In 1904, the company was sued by Colonel Frank A. Fox of the Graham Fox Motor Car Company, who claimed that he had "invented certain essential features of the motors now being made by the Eisenhuth company," and went bankrupt in 1907. In 1909, the Eisenhuth factory was sold to the "Noiseless Typewriter Company."
Their automobile was an unusual model called the Compound with three cylinders. Two were working cylinders, the larger middle one further expanded the exhaust gases of the outer working cylinders, this concept received later the name: '5-Stroke engine'.
The 1904 Compound was a touring car model. Equipped with a tonneau, it could seat 7 passengers and sold for $6000 to 8000. The vertical-mounted straight-3, situated at the front of the car, produced 35 hp (26.1 kW). A 3-speed sliding gear transmission was fitted. The car weighed 3100 lb (1406 kg).
- "KEATING PROPERTY SOLD; Purchased by the Eisenhuth Horseless Vehicle company". The Hartford Courant. January 17, 1902. p. 2.
- "MIDDLETOWN FIRM WILL CHANGE NAME; Motor Vehicle Concerns in Merge". The Hartford Courant. November 25, 1903. p. 15.
- "Eisenhuth Company Sued". The Hartford Courant. November 23, 1904. p. 12.
- "EISENHUTH CO.'S PROPERTY APPRAISED; MIDDLETOWN CONCERN'S TOTAL ASSETS $117,500". The Hartford Courant. March 13, 1907. p. 17.
- "TO TAKE OVER PLANT OF EISENHUTH CO.; TYPEWRITER CO, TAKES POSSESSION TODAY". The Hartford Courant. July 1, 1909. p. 17.
- Suzuki, Ph.D., Takashi (1997). The Romance of Engines. SAE. pp. 87–94. ISBN 1-56091-911-6.
- Frank Leslie's Popular Monthly (January, 1904)
- Patents ES0156621; ES433850; ES0249247; ES0230551, on related engine designs (see: Espacenet)
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