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The Beach Pneumatic Transit was the first attempt to build an underground public transit system in New York City. It was developed by Alfred Ely Beach in 1869 as a demonstration subway line running on pneumatic power. As the subway line had one stop and a one-car shuttle going back and forth, it was merely a novelty and not a regular mode of transport. It lasted from 1870 until 1873. ==History== Alfred Ely Beach demonstrated a model of basic pneumatic subway system, in which air pressure in the tube pushed the cars, at the American Institute Exhibition in New York in 1867.〔 After demonstrating that the model was viable, in 1869 Beach and his Beach Pneumatic Transit Company began constructing a pneumatically-powered subway line beneath Broadway. Funneled through a company he set up, Beach put up $350,000 of his own money to bankroll the full-scale test project.〔("Inventor of the Week - Alfred Beach" ) (MIT)〕 Built with a tunneling shield,〔 the tunnel was complete in only 58 days.〔(【引用サイトリンク】title=www.nycsubway.org )〕 Its single tunnel, long, in diameter, was completed in 1870 and ran under Broadway from Warren Street to Murray Street. However, one of the city's top politicians of the day, William "Boss" Tweed, would not support such a project. With no initial political support for the project, Beach started the project by claiming he was building postal tubes. The initial permit was to install a pair of smaller postal tubes below Broadway; however, Tweed later amended the permit to allow the excavation of a single large tunnel wherein the smaller tubes could reside.〔〔("The remarkable pneumatic people mover" on ''Damn Interesting'' )〕 The exact location of the tubes was determined during construction by compass and survey as well as verified by driving jointed rods of iron up through the roof of the tunnel to the pavement.〔("To excavate the Earth" ) (Columbia University)〕 The line was built as a demonstration of a pneumatic transit system, open to the public with a 25-cent fare per person.〔 Proceeds for the admission went to the Union Home and School for Soldiers' and Sailors' Orphans.〔(Beach Pneumatic Transit on capsu.org website )〕 It was planned to run about in total, to Central Park, if it was ever completed. For the public, the project was basically an attraction. It ran only a single car on its one-block-long track to a dead-end at its terminus, and passengers would simply ride out and back, to see what the proposed subway might be like. During its first two weeks of operation, the Beach Pneumatic Transit sold over 11,000 rides and over 400,000 total rides.〔〔("The Secret Subway" ) (PBS)〕〔 Although the public showed initial approval, Beach was delayed in getting permission to expand it due to official obstruction for various reasons. By the time he finally gained permission in 1873, public and financial support had waned, and the subway was closed down within the year. The project was shut down when a stock market crash caused investors to withdraw support. It is unclear that such a system could have been practical for a large-scale subway network.〔("Beach Pneumatic Transit - The Interborough Rapid Transit subway" ) (plrog.org)〕〔〔 After the project was shut down, the tunnel entrance was sealed and the station, built in part of the basement of the Rogers Peet Building, was reclaimed for other uses. The entire building was lost to fire in 1898. In 1912, workers excavating for the present-day BMT Broadway Line dug into the old Beach tunnel, where they found the remains of the car, the tunnelling shield used during initial construction, and even the piano in the subway's waiting room.〔〔 The shield was removed and donated to Cornell University, which has since lost track of its whereabouts. The tunnel was almost completely within the limits of the present day City Hall station under Broadway, but it is rumored that a small portion could still be accessed by a manhole on Reade Street.〔(【引用サイトリンク】title=Top 12 Secrets of the NYC Subway )〕 The New-York Historical Society commissioned a plaque honoring Alfred Beach to be placed in the City Hall station.〔〔 Although the Beach Pneumatic Transit lasted for only three years, the project gave way to the New York pneumatic tube mail system, which was based on the request that Beach had made to Tweed and which ran until 1953.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Beach Pneumatic Transit」の詳細全文を読む スポンサード リンク
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