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A man engine is a mechanism of reciprocating ladders and stationary platforms installed in mines to assist the miners' journeys to and from the working levels. It was invented in Germany in the 19th century and was a prominent feature of tin and copper mines in Cornwall until the beginning of the twentieth century.
The wooden parts of the structure have been replaced over the years however remains of ladders, platforms and the rest of the pumping rod may remain within the capped mine shaft. [4] The wooden bucket on the eastern end of the beam has long since rotted however the 2m deep stone lined pit, once draining into the Wanlock Burn, still survives.
If the ladder is parallel to the ship, it has to have an upper platform. Upper platforms are mostly turnable. The lower platform (or the ladder itself) hangs on a bail and can be lifted as required. [citation needed] To prevent damage to boats going under the ladder as the water level rises and falls, a boat fender is fitted to the end of the ...
Hoist atop an elevator. A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium.
A rotating, power-operated (usually hydraulically) ladder mounted on a self-propelled automotive fire apparatus. [1] Aerial ladder platform A hydraulic aerial device which combines an aerial ladder with a personal carrying platform supported at the end of a ladder. [1] Air monitoring meter
The company produces mid-mount aerials as either a tower ladder platform (with a bucket/basket) or in a ladder tower form (no bucket) plus industrial application aerials today. On April 21, 2016, at FDIC International, the company debuted its first ever rear-mount aerial with the Sutphen SLR 75. The following year Sutphen previewed a 108-foot ...