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or belt. The drive element of a pulley system can be a rope, cable, belt, or chain. The earliest evidence of pulleys dates back to Ancient Egypt in the...16 KB (1,975 words) - 03:37, 6 May 2024
is a system of two or more pulleys with a rope or cable threaded between them, usually used to lift heavy loads. The pulleys are assembled to form blocks...16 KB (2,226 words) - 16:46, 21 May 2024
The idea of using rope drives had arisen from his earlier, 1856, experiments in using a rope drive together with an expanding vee pulley, as part of a Van...6 KB (703 words) - 17:28, 26 November 2023- Elizabeth Rope (née Pulley) (1762-1837) was a First Fleet convict sentenced in 1783 at Thetford Norfolk to 7 years transportation for theft. She was transported...11 KB (1,433 words) - 11:39, 19 May 2024
Belt (mechanical) (redirect from Flat-belt pulley)pulleys and may have a twist between the pulleys, and the shafts need not be parallel. In a two pulley system, the belt can either drive the pulleys normally...37 KB (4,958 words) - 00:47, 29 May 2024
the Weston differential pulley evolved from the Chinese windlass, with an endless chain replacing the finite length of rope. He claimed that many engineering...9 KB (1,139 words) - 04:37, 10 May 2024- Pulley for the first time when the female convicts disembarked in Sydney Cove on the stormy afternoon on 6 February 1788. On 19 May, Rope and Pulley were...11 KB (1,475 words) - 08:27, 28 April 2022
effort. The single-pulley technique entails dropping a pulley attached to another length of rope, which the victim clips to the climbing harness. If the...4 KB (574 words) - 10:06, 18 April 2024
to fasten with rope, join ropes, and utilize rope to generate mechanical advantage. Pulleys can redirect the pulling force of a rope in another direction...37 KB (4,618 words) - 06:35, 19 May 2024
Mechanical advantage device (section Pulleys)single movable pulley has an MA of 2 (assuming frictionless bearings in the pulley). Consider a pulley attached to a weight being lifted. A rope passes around...6 KB (829 words) - 22:04, 16 March 2021
Overhead clothes airer (redirect from Kitchen maid (pulley airer))the middle of the 19th century they almost always benefited from a rope and pulley system to raise and lower the rack, and such systems began to be manufactured...6 KB (732 words) - 03:33, 26 May 2024- of weight a rope with a certain tension capacity can hold versus the amount of wraps around a pulley. Too many revolutions around a pulley make it inefficient...7 KB (1,034 words) - 21:24, 8 November 2023
sheaves – unpowered pulleys that simply allow the cable to change direction. While one car is pulled upwards by one end of the haul rope, the other car descends...27 KB (3,104 words) - 06:41, 16 May 2024
Brooksvale Park (redirect from Brooksvale Park Ski Tow Rope)slope, which attracted many recreational enthusiasts. In 1969 a ski tow rope was added to the slope. Although the ski slope is no longer operational,...9 KB (1,011 words) - 22:26, 25 April 2024
on the rope. They are used for lowering a load, a subject or oneself (rappelling). Pulleys can serve as a mechanical advantage, along with rope grabs,...6 KB (925 words) - 02:31, 4 January 2024- a gun tackle, which has a single mounted, or fixed, pulley and a single movable pulley. The rope is threaded around the fixed block and falls down to...20 KB (2,954 words) - 22:29, 20 May 2024
minimum diameter of the pulley is restricted by the ratio of the pulley diameter to the rope diameter, the strands of the wire rope being subjected to fatigue...8 KB (1,347 words) - 23:39, 27 April 2024
side-winds, which makes them suitable for shipboard use, even without a rope-pulley landing system. Marine and offshore helicopter decks on board offshore...4 KB (504 words) - 09:21, 2 October 2023
Surface lift (redirect from Rope tow)operating in North America. A rope tow consists of a cable or rope running through a bullwheel (large horizontal pulley) at the bottom and one at the...13 KB (1,595 words) - 05:06, 30 May 2024
- connector. A pulley carried on a rotating shaft and connected to another pulley on a second shaft by an endless band consisting of a flat belt, rope, chain
- the weight which has been, meantime, attached to a rope... passing from the piston rod over pulleys... The machine had a cylinder two and a half inches
- the knot, all of which use a loop in the standing part of the rope as a make-shift pulley in order to theoretically obtain a 3:1 mechanical advantage when