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William Robinson was born in Ireland on November 22, 1840. [1]: 59 He came to the United States as a boy and lived in Brooklyn, New York for much of his adult life.[2]He received his B.A. degree in 1865 and his M.A. degree in 1868 from Wesleyan University.
Edward F. Caldwell, a portrait painter originally from Waterville, New York, became part of an active community of designers in New York City during the early 1880s.By the end of that decade and into the 1890s, Caldwell worked for, and later became chief designer and vice president of, the Archer & Pancoast Manufacturing Company of New York, top designers of gas lighting fixtures.
A typical ceiling fan weighs between 3.6 and 22.7 kg when fully assembled. While many junction boxes can support that weight while the fan is hanging still, a fan in operation exerts many additional stresses—notably torsion—on the object from which it is hung; this can cause an improper junction box to fail.
James Warren York (more commonly known as J. W. York) was a musician, businessman, business owner and musical instrument innovator. York was born November 24, 1839, in Exeter, New Hampshire , and died February 9, 1927, in Los Angeles, California .
An axial belt-drive exhaust fan serving an underground car park. This exhaust fan's operation is interlocked with the concentration of contaminants emitted by internal combustion engines. Mechanical ventilation of buildings and structures can be achieved by the use of the following techniques: Whole-house ventilation; Mixing ventilation
In earlier days, birch bark was occasionally used as a flashing material. [7] Most flashing materials today are metal, plastic, rubber, or impregnated paper. [8]Metal flashing materials include lead, aluminium, copper, [1] stainless steel, zinc alloy, other architectural metals or a metal with a coating such as galvanized steel, lead-coated copper, anodized aluminium, terne-coated copper ...
The term disruptive technologies was first described in depth with this book by Christensen; but the term was later changed to disruptive innovation in a later book (The Innovator's Solution). A disruptive innovation is an innovation that creates a new market and value network that will eventually disrupt an already existing market and replace ...
The Clapper is a sound-activated electrical switch, [1] sold since 1984 by San Francisco, California based Joseph Enterprises, Inc. Joseph Pedott marketed the clapper with the slogan "Clap On! Clap Off! The Clapper!". [2] The Clapper plugs into a U.S.-type electrical outlet, and allows control of up to two devices plugged into the Clapper. [3]