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A modern hospital bed at public hospital at Hong Kong Hospital beds per 1000 people 2013 [1] A hospital bed or hospital cot is a bed specially designed for hospitalized patients or others in need of some form of health care. These beds have special features both for the comfort and well-being of the patient and for the convenience of health ...
The crank and connecting rod mechanisms of the other two archaeologically attested sawmills worked without a gear train. [13] [14] Roman crank handle from Augusta Raurica, dated to the 2nd century AD [31] A Roman iron crank of yet unknown purpose dating to the 2nd century AD was excavated in Augusta Raurica, Switzerland. The 82.5 cm (32 inches ...
A Norrahammars Bruk, model 3005-2, mangle from 1934. A mangle [1] is a mechanical laundry aid consisting of two rollers in a sturdy frame, connected by cogs and (in its home version) powered by a hand crank or by electricity.
Cell, with Prisoner at Crank-Labour, In the Surrey House of Correction, 1851 Crank machine model, from the Oxford Prison & Castle museum. The crank machine was a penal labour device used in England in the 19th century. It consisted of a hand-turned crank which forced four large cups or ladles through sand inside a drum, doing nothing useful.
The non-manual crank appears in several of the hydraulic devices described by the Banū Mūsā brothers in their Book of Ingenious Devices. [15] These automatically operated cranks appear in several devices, two of which contain an action which approximates to that of a crankshaft , anticipating Al-Jazari 's invention by several centuries and ...
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But dedicated alarm clocks have many ways to get you up and out of bed. “Alarms come with a variety of features such as vibration, lights, noises, puzzles,” Paruthi said. Your phone disrupts ...
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