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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).
bell adapters which are like mechanical joint adapters but contain a stainless steel backup ring to maintain a positive seal against the mating flange [9]: 347 flange adapters which attach to a polyethylene pipe with butt fusion to stiffen a junction and allow another flanged pipe or fitting to be bolted on [ 9 ] : 341
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.
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.
The cam can be seen as a device that converts rotational motion to reciprocating (or sometimes oscillating) motion. [clarification needed] [3] A common example is the camshaft of an automobile, which takes the rotary motion of the engine and converts it into the reciprocating motion necessary to operate the intake and exhaust valves of the cylinders.
A peristaltic pump, also commonly known as a roller pump, is a type of positive displacement pump used for pumping a variety of fluids. The fluid is contained in a flexible tube fitted inside a circular pump casing. Most peristaltic pumps work through rotary motion, though linear peristaltic pumps have also been made.
The company was founded by George D. Roper in 1890, primarily as a manufacturer of home appliances, pumps, and other industrial products. He entered part ownership in the Van Wie Gas Stove Company of Cleveland, Ohio. The Van Wie plant moved to Rockford, Illinois and passed into trusteeship in the early 1890s. George D. Roper became the sole ...