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A car ramp is a structure or device used to raise an automobile from the ground in order to access its undercarriage. [1] [2] An alternative method to using a jack or jack stands. Car ramps are simple to use and relatively inexpensive. Car ramps also offer safety for mechanics by providing vehicle stability during car maintenance and repairs. [3]
According to F. Lisheng and T. Qingjun, the hand-crank of the rotary quern was different from a crank, which was the combination of a hand-crank and a push-and-pull connecting rod by a hinge. [7] The Antikythera mechanism, dated to around 200 BC, [25] [26] used a crank as a part of its mechanism. [27]
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A jack which can lift a mobile home. A jack is a mechanical lifting device used to apply great forces or lift heavy loads. A mechanical jack employs a screw thread for lifting heavy equipment. A hydraulic jack uses hydraulic power. [1] The most common form is a car jack, floor jack or garage jack, which lifts vehicles so that maintenance can be ...
3-wheeled handcar or velocipede on a railroad track Preserved railroad velocipede on exhibit at the Toronto Railway Historical Association. A handcar (also known as a pump trolley, pump car, rail push trolley, push-trolley, jigger, Kalamazoo, [1] velocipede, or draisine) is a railroad car powered by its passengers or by people pushing the car from behind.
However, the rules do not prevent all potential injuries to a hand, finger, or even a child's head, if someone deliberately holds the switch when the window is closing. In 2009, the U.S. auto safety administration tentatively decided against requiring all cars to have automatic reversing power windows if they sense an obstruction while closing ...
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Car lift may refer to: Car elevator, a device which transports cars between different floors of a building. Car lift, car hydraulic lift, 2 post lift or 2 column lift, a device which mechanically lifts a car up, so that the mechanic can work underneath. Car ramp, a device which raises a car from the ground for access to its undercarriage.