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A Hills Hoist is a height-adjustable rotary clothes line, designed to permit the compact hanging of wet clothes so that their maximum area can be exposed for wind drying by rotation. They are considered one of Australia's most recognisable icons , and are used frequently by artists as a metaphor for Australian suburbia in the 1950s and 1960s.
Longer washing lines often have props holding up the mid-section so the weight of the clothing does not pull the clothesline down to the ground. More elaborate rotary washing lines save space and are typically retractable and square or triangular in shape, with multiple lines being used (such as the Hills Hoist from Australia).
Gilbert Toyne's final patented rotary clothes hoist design was in 1945 "Improvements relating to hydraulic clothes hoists" (Australian Patent No. 128009) [8] Hydraulic clothes hoists used fluid as a means of raising and lowering the clothes line frame. At least seven hydraulic clothes hoists had been patented in Australia prior to Toyne's design.
IEC 60309 (formerly IEC 309 and CEE 17, also published by CENELEC as EN 60309) is a series of international standards from the International Electrotechnical Commission (IEC) for "plugs, socket-outlets and couplers for industrial purposes".
Patent Model - Clothes-Pounder, 1878, [3] Hagley Museum and Library Of Colvin's four laundry improvements, her first one was the most important. It was for an improvement upon washing-machines and consisted of a rotating hollow cylinder inside a boiler which could clean a variety of fabrics including carpets and laces without rubbing and damaging them.
However, although the washing of laundry became mechanised and electrified in the twentieth century, even households that can afford electric clothes driers may also use a clothes airer, and its environmentally friendly qualities have led to a resurgence in its popularity, [4] with a number of new manufacturers springing up in recent decades.
Phase-to-phase transformer in Britain Primary line on the right toward the front and secondary lines in the back of this single-phase transformer. Both pole-mounted and pad-mounted transformers convert the overhead or underground distribution lines' high 'primary' voltage to the lower 'secondary' or 'utilization' voltage inside the building.
1909 500 kW Westinghouse rotary converter. A rotary converter is a type of electrical machine which acts as a mechanical rectifier, inverter or frequency converter.. Rotary converters were used to convert alternating current (AC) to direct current (DC), or DC to AC power, before the advent of chemical or solid state power rectification and inverting.