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A cylinder (reel) mower from 1888 showing a fixed cutting blade in front of the rear roller and wheel-driven rotary blades. Budding had the idea of the lawnmower after seeing a machine in a local cloth mill that used a cutting cylinder (or bladed reel) mounted on a bench to trim the irregular nap from the surface of woolen cloth and give a smooth finish. [2]
The all-gear walk-behind units were powered by a single-cylinder four-stroke engine, available in a one-wheel model D (1916−195?) and the two wheel model L (1936−1966) and the two wheel model C (1967–1976). Variations of all models included bodywork changes, mechanical changes and color changes throughout their production.
Larger lawn mowers are usually either self-propelled "walk-behind" types or, more often, are "ride-on" mowers that the operator can sit on and control. A robotic lawn mower ("lawn-mowing bot", "mowbot", etc.) is designed to operate either entirely on its own or less commonly by an operator on a remote control .
A stone rake is similar to a landscape rake, but with a narrower head of about 18 to 28 inches and is constructed from steel or aluminum. The head sits at a 90-degree angle to the handle. A thatch rake's primary function is to eliminate thatch—an organic layer situated between the lawn and the soil surface.
There were eleven models in four lines of lawn and garden tractors by 1974: the 8 hp (6.0 kW) "economy" A Series with standard 32-inch mower and electric or recoil start, the "compact" B Series with a four-speed or automatic transmission, the C Series offering four models (the C-120 and C-160 automatic, and the C-100 and C-160 8-speed and the ...
Bottom side of an electric lawn scarifier showing rotating metal blades. Scarification or de-thatching of lawns or turf is a mechanical process whereby the surface and subsurface of the lawn, green or sports pitch is rigorously abraded by penetrating metal blades, tines or prongs.
A hay rake may be mechanized, drawn by a tractor or draft animals, or it may be a hand tool.The earliest hay rakes were nothing more than tree branches, but wooden hand rakes with wooden teeth, similar in design to a garden rake but larger, were prevalent in the 19th and early 20th centuries, and still are used in some locations around the world.
In machining, the rake angle is a parameter used in various cutting processes, describing the angle of the cutting face relative to the workpiece. There are three types of rake angles: positive, zero or neutral, and negative. Positive rake: A tool has a positive rake when the face of the cutting tool slopes away from the cutting edge at inner side.
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