Tractor Lubricating System the Cleveland Tractor Company (Triggs) Original Patent Lithograph 1932
On this original linen-backed lithograph from 1932 (includes original specification sheet), William Triggs, on behalf of The Cleveland Tractor Company, patented a lubricating system for tractors. CLETRAC, INC., a manufacturer of tractors for military and civilian use, was organized by ROLLIN H. WHITE as the Cleveland Motor Plow Co. in 1916, with capital of $6 million. White, a founder of the WHITE MOTOR CO., had 10 years earlier formed this new firm to produce the crawler-type tractor he had developed for general farm use. First located at Euclid Ave. and Lamb, the plant later moved to 19300 Euclid Ave. Renamed Cleveland Tractor Co. in 1917, the company sold 40,000 tractors in the U.S. and 70 foreign countries during its first decade. In the early 1930s, the needs of the Civilian Conservation Corps. and public works projects kept the plant open and by 1937 the firm, which employed 1,500 workers, enjoyed record tractor sales here and abroad. Two years later, the company introduced 3 new lower-priced tractors with 4-cylinder engines for use by the small farmer.
All patent lithographs sold by Maymont Group are 100% ORIGINAL.
These documents are NOT reproductions or posters (patent art).
These are the original lithographs found in books obtained from the Patent and Trademark Office directly.
In the 1800's and early 1900's, inventors would submit a detailed drawing of the invention and/or improvements to the patent and trademark office. Once received and if approved, the Patent office would then send a letter of confirmation to the inventor and begin to take that drawing and etch it into stone in order to create and print this linen-backed lithograph. These documents are the original hard copies that were created by the patent office's artists, and act as patent examiner reference material. With that being said, these are 100% original and are the only physical copies in existence.
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