In culture




In 1949 the company Vitamix advertised their blender in one of the first television infomercials. The sales pitch lasted for 25 minutes, suggesting that the blender be used to make bread crumbs, potato pancakes, laxative spinach drinks, and a dessert beverage featuring entire raw eggs and their shells, which the host announced would be enjoyed like malted milk.

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Characteristics

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Different blenders have different functions and features but product testing indicates that many blenders, even the less expensive ones, are useful for meeting many consumer needs. Features which consumers consider when purchasing a blender include the following: large visible measurement marks ease of use low noise during usage power usage (typically 300–1000 watts) ease of cleaning option for quick "pulse" blending Countertop blenders edit Countertop blenders use a 1–2 liters (4–8 cups) blending container made of glass, plastic, stainless steel. Glass blenders are heavier and more stable. Plastic is prone to scratching and absorbing the smell of blended food. Stainless steel is preferred for its looks, but limits visibility of the food as it is blended. Countertop blenders typically offer 3–16 speed settings, but having more choices in speed settings is not an indication of increased utility for all users. In cases where the blades are removable, the container should h...
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Mechanical operation

A blender consists of a housing, motor, blades, and food container. A fan-cooled electric motor is secured into the housing by way of vibration dampers, and a small output shaft penetrates the upper housing and meshes with the blade assembly. Usually, a small rubber washer provides a seal around the output shaft to prevent liquid from entering the motor. Most blenders today have multiple speeds. As a typical blender has no gearbox, the multiple speeds are often implemented using a universal motor with multiple stator windings and/or multi-tapped stator windings; in a blender with electromechanical controls, the button (or other electrical switching device or position) for each different speed connects a different stator winding/tap or combination thereof. Each different combination of energized windings produces a different torque from the motor, which yields a different equilibrium speed in balance against the drag (resistance to rotation) of the blade assembly in contact with the...
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Development

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North America edit The Polish-American chemist Stephen Poplawski, owner of the Stevens Electric Company, began designing drink mixers in 1919 under a contract with Arnold Electric Company, and patented the drink mixer in 1922 which had been designed to make Horlicks malted milkshakes at soda fountains. He also introduced the liquefier blender in 1922. In the 1930s, L. Hamilton, Chester Beach and Fred Osius, produced Poplawski's invention under the brand name Hamilton Beach Company. Fred Osius improved the appliance, making another kind of blender. He approached Fred Waring, a popular musician, who financed and promoted the "Miracle Mixer", released in 1933. However the appliance had some problems to be solved about the seal of the jar and the knife axis, so Fred Waring redesigned the appliance and released his own blender in 1937, the Waring Blendor with which Waring popularized the smoothie in the 1940s. Waring Products was sold to Dynamics Corporation of America in 195...
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