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Elevating scraper: self-loading as it uses an elevator to load material; requires no push-cat. Tandem scrapers: separate tractor and scraper engines provide greater power, and better traction in steep or slippery areas; Tandem Push-Pull: concentrates the combined horsepower of two such machines onto one cutting edge.
The first known lawn mower had a cylinder cutting gear made of iron. [citation needed] It was used to mow sporting grounds and wide-ranging gardens.As manufacturers changed the design and structure of mowers, the cutting mechanism also developed and evolved into several varieties, including cylinder/reel blades, deck blades, mulching blades, and lifting blades.
These tractors had varied success but the trend going into the mid-1910s was toward "small" and "cheap". A 1911 one-cylinder 25 hp (19 kW) Type C Mogul. The company's first important tractors were the 10-20 and 15-30 models. Introduced in 1915, they were primarily used as traction engines to pull plows and for belt work on threshing machines ...
Blade mounting and drive system: The blade of a rotary mower is usually mounted directly to the crankshaft of its engine, but it can be propelled by a hydraulic motor or a belt pulley system. Mower blade: A blade that rotates in a horizontal plane (about a vertical axis). Some mowers have multiple blades.
This design was so revolutionary and economical that it influenced the design of modern bulldozer blades and earth movers.. Between 1884 and 1910, thousands of Fresno scrapers were produced at the Fresno Agricultural Works, which had been formed by Porteous and used in agriculture, land leveling, road and railroad grading, and the construction industry.
A hand scraper is a single-edged tool used to scrape metal or other materials from a surface. This may be required where a surface needs to be trued, corrected for fit to a mating part, retain oil (usually on a freshly ground surface), or be given a decorative finish. Surface plates were traditionally made by scraping. [1]