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elevator, in machinery

(Encyclopedia)elevator, in machinery, device for transporting people or goods from one level to another. The term is applied to the enclosed structures as well as the open platforms used to provide vertical transpo...

elevator, in aviation

(Encyclopedia)elevator, in aviation: see airplane. ...

Otis, Elisha Graves

(Encyclopedia)Otis, Elisha Graves, 1811–61, American inventor, b. Halifax, Vt. From his invention (1852) of an automatic safety device to prevent the fall of hoisting machinery he developed the first passenger el...

Sprague, Frank Julian

(Encyclopedia)Sprague, Frank Julian sprāg [key], 1857–1934, American electrical engineer, b. Milford, Conn., grad. Annapolis, 1878. He was an assistant to Thomas Edison in 1883 and independently created a superi...

Yonkers

(Encyclopedia)Yonkers yŏnˈkərz [key], city (1990 pop. 188,082), Westchester co., SE N.Y., on the east bank of the Hudson, in a hilly region just N of the Bronx (New York City); inc. 1855. Manufactures include ch...

Hutchinson

(Encyclopedia)Hutchinson. <1> City (2020 pop. 40,006), seat of Reno co., S central Kans., on the Arkansas River; inc. 1872. It is a commercial and industrial ...

Evans, Oliver

(Encyclopedia)Evans, Oliver, 1755–1819, American inventor, b. near Newport, Del. He joined his brothers in a flour-milling business in Wilmington, and after studying similar earlier devices, he developed, install...

harrow, in agriculture

(Encyclopedia)harrow, farm implement, consisting of a wooden or metal framework bearing metal disks, teeth, or sharp projecting points, called tines, which is dragged over plowed land to pulverize the clods of eart...

In

(Encyclopedia)In, symbol for the element indium. ...

brake, in technology

(Encyclopedia)CE5 Shoe brake CE5 Disk brake brake, in technology, device to slow or stop the motion of a mechanism or vehicle. The vacuum brake system, or vacuum brake, depends upon the use of a vacuum to ...