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The Curta was conceived by Curt Herzstark in the 1930s in Vienna, Austria.By 1938, he had filed a key patent, covering his complemented stepped drum. [3] [4] This single drum replaced the multiple drums, typically around 10 or so, of contemporary calculators, and it enabled not only addition, but subtraction through nines complement math, essentially subtracting by adding.
The twist-beam rear suspension (also torsion-beam axle, deformable torsion beam, or compound crank) is a type of automobile suspension based on a large H- or C-shaped member. The front of the H attaches to the body via rubber bushings , and the rear of the H carries each stub-axle assembly, on each side of the car.
In most piston engines, the camshaft(s) are mechanically connected to the crankshaft. The crankshaft drives the camshaft (via a timing belt, timing chain or gears), which in turn actuates the intake and exhaust valves. [1] These valves allow the engine to inhale air (or an air/fuel mixture) and exhale the exhaust gasses. [2]
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A quick-return mechanism is a subclass of a slider-crank linkage, with an offset crank. Quick return is a common feature of tools in which the action is performed in only one direction of the stroke, such as shapers and powered saws , because it allows less time to be spent on returning the tool to its initial position.
In July 2008, Guillermo del Toro expressed his interest in directing a third Hellboy film, saying that he would work on the film after finishing The Hobbit. [1] In 2010, during the production of the unmade At the Mountain of Madness, del Toro mentioned that he would direct Hellboy III after his next project, even though the script was not yet written.
However, they discover a way to save a lot of time and money. The slide is also an enormous project, at 30 ft (9 m). Meanwhile, a customer wants a 1940s gas pump converted into a coin counter for his bank. An LCD screen is added to the pump and the crank is removed.
Modern engines usually use a crank sensor directly connected to the engine management system. The term can also be used to describe the tick marks along the length of an optical mark recognition sheet, used to confirm the location of the sheet as it passes through the reader. See, for example, U.S. Patent 3,218,439 (filed 1964, granted 1965 ...