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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 diagram of the MB-5's foam turret. The roof-mounted turret was designed by Cardox Ltd and fed by a 14 pounds per square inch (97 kPa) rotary vein pump (also built by Cardox Ltd). [3] It was manned by one firefighter, who would stand in a roof hatch. This hatch was positioned to the rear of the cab and would latch shut.
A trapdoor or hatch is a sliding or hinged door that is flush with the surface of a floor, ceiling, or roof. [1] It is traditionally small in size. [ 2 ] It was invented to facilitate the hoisting of grain up through mills, however, its list of uses has grown over time. [ 3 ]
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The cabin flips for repairs and maintenance and has a manual-hydraulic flip mechanism. Oil and liquids are checked via a front service hatch. The engine is the Mercedes-Benz OM352 A , a water-cooled six-cylinder in-line diesel with turbocharger and integrated compressor, producing 127 kW/172 hp at 2,800 rpm from a displacement of 5,675 cc. Max ...
An elevator (American English) or lift (Commonwealth English) is a machine that vertically transports people or freight between levels. They are typically powered by electric motors that drive traction cables and counterweight systems such as a hoist , although some pump hydraulic fluid to raise a cylindrical piston like a jack .
1953 Ford Motor Company spent an estimated US$2 million (US$22,776,119 in 2023 dollars [16]) to engineer a Continental Mark II with a servo-operated retractable roof. The concept was rejected for cost and marketing reasons. [5] Engineering work was used by Ford for the retractable mechanism in their 1957 through 1959 flagship Ford Fairlane 500 ...
For lifting structures such as houses the hydraulic interconnection of multiple vertical jacks through valves enables the even distribution of forces while enabling close control of the lift. The screw version of the bottle jack works by turning a large nut running on the threaded vertical ram at the neck of the body.
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