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A crash bar (also known as a panic exit device, panic bar, or bump bar) [1] [2] is a type of door opening mechanism which allows users to open a door by pushing a bar. While originally conceived as a way to prevent crowd crushing in an emergency, crash bars are now used as the primary door opening mechanism in many commercial buildings.
Carl Jacob Prinzler (June 6, 1870 – May 30, 1949) was an American engineer who invented the "panic bar" device for doors that allowed them to be opened from the inside despite being locked on the outside.
By 1965, with the involvement of the Boston investment banking firm of State Street Investments, Vonnegut Hardware Company was sold to the Schlage Lock Company, San Francisco. Around 1965–1966, Schlage resold the retail components of Vonnegut to Indianapolis developer Warren Atkinson and a few Vonnegut Hardware Company employees.
Of course, those sales are just one small slice of what you can find on sale right now. From toys to bedding, we've rounded up 15 sales going on this weekend that you'll probably want to know ...
Over a foot of snow fell in parts of the Northeast over Thanksgiving, and more snow is on the way Saturday and through the rest of the weekend in parts of the Upper Great lakes through the ...
The Dow's losses amount to roughly 3%, or more than 1,500 points, in the past nine trading sessions. The index has fallen from a record close of 45,014 on Dec. 4 to 43,499 as of Tuesday's close.
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