Smaller and cheaper than a triple-expansion vertical engine, the horizontal cross-compound pumping engine, Pump No. 2, ran at relatively slow revolutions and was considered the height of engineering from the 1890s to World War I. This pumping engine at the York Water Company was built by the Worthington Pump & Machinery Corporation, Snow-Holly Works, Buffalo, New York.
PA
Society: ASMEMain Category: MechanicalSub Category: PumpingEra: 1890-1899DateCreated: 1890sYork Water CompanyYorkState: PAZip: 17401Country: USAWebsite: https://www.asme.org/about-asme/who-we-are/engineering-history/landmarks/77-worthington-horizontal-cross-compound-pumping, https://www.asme.org/getmedia/8943cdf5-6cab-4567-b165-42f489334684/77-Worthington-Horizontal-Cross-compound-Pumping.aspxCreator: Corliss, George H.
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Era_date_from: 1890s
1982
The structure has two segments: an East Channel bridge consisting of four 175-foot spans and three 240-foot spans crossing from Harrisburg to City Island; and a West Channel bridge, consisting of seven 175-foot spans crossing from City Island to Wormleysburg.
With 15 truss spans totaling 2,820 feet, the Walnut Street Bridge is the finest and largest surviving example of the standardized Phoenix wrought-iron truss bridges produced from 1884 to 1923.
YearAdded:
Image Credit: Courtesy Flickr/rjonesProject856 (cc-by-2.0)Image Caption: Walnut Street BridgeEra_date_from: 1890
1997
According to oral history, George Washington visited the canal diggings in 1792, and then again in 1794, while he was accompanying troops to suppress the Whiskey Rebellion in Western Pennsylvania.
YearAdded:
Image Credit: Courtesy Flickr/Ospreye (CC BY 2.0)Image Caption: Union Canal TunnelEra_date_from: 1828
1970
This majestic viaduct was built during the golden age of railroading. It was at the western end of a major readjustment in grade and alignment of the Erie-Lackawanna Railroad, and had double tracks to carry the trains across the valley of Tunkhannock Creek. The Hallstead cutoff (between Scranton, Pennsylvania and Hallstead, New Jersey) reduced passenger travel time by 20 minutes, and freight travel time by over an hour.
YearAdded:
Image Credit: Original Photo: Flickr/Jim Danvers (CC BY 2.0)Image Caption: Tunkhannock ViaductEra_date_from: 1915
1975
The Starrucca Viaduct of the Erie Railroad Company crosses Starrucca Creek in Lanesboro, Pennsylvania. It is one of the oldest and one of the longest railroad bridges in Pennsylvania. Its 18 slender, semicircular stone arches each span 50 feet and the structure rises 110 feet above the creek.
YearAdded:
Image Credit: Courtesy Flickr/Navin Rajagopalan (CC BY-SA 2.0)Image Caption: Starrucca ViaductEra_date_from: 1848
1973
Three rivers - the Allegheny, Monongahela, and Ohio - join in Pittsburgh, making the city a natural site for the building of bridges. But the Smithfield Street Bridge stands apart from other Pittsburgh bridges for several reasons: it replaced structures by two well-known bridge engineers, Lewis Wernwag and John A. Roebling; it was the first use in America of the lenticular - or lens-shaped - truss design; and it was one of the first major bridges in the U.S. built primarily with steel.
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Image Credit: Courtesy Flickr/RJ Schmidt (CC BY-ND 2.0)Image Caption: Smithfield Street BridgeEra_date_from: 1883
1975
ShippingportState: PAZip: 15050Country: USAWebsite: http://www.asme.org/about-asme/history/landmarks/topics-a-l/electric-power-production-nuclear/-47-shippingport-nuclear-power-station-%281958%29, https://www.asme.org/getmedia/c64a220f-030c-4384-8336-7d9857248322/47-Shippingport-Nuclear-Power-Station.aspxCreator: Duquesne Light Company
The first commercial central electric-generating station in the United States to use nuclear energy was the Shippingport Atomic Power Station of the Department of Energy and the Duquesne Light Company. In a dramatic high-tech display, ground was broken in 1954 during dedication ceremonies by President Dwight D. Eisenhower, who also opened it on May 26, 1958, as part of his "Atoms for Peace" program. Shippingport is located on the Ohio River about 25 miles from Pittsburgh.
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Image Credit: Public Domain (National Park Service)Image Caption: Shippingport Nuclear Power StationEra_date_from: 1958
1980
The third bridge built on the same site to carry railroad tracks across the Susquehanna River just north of Harrisburg, Pennsylvania, the Rockville Stone Arch Bridge, at 3,820 feet long and 52 feet wide, is believed to be the longest and widest stone-arch railroad bridge in the world. A central link in rail travel between New York City and Pittsburgh, the Rockville Stone Arch Bridge accommodates four lines of railroad tracks, today serving both the Norfolk Southern and Amtrak lines.
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Image Credit: Courtesy Flickr/John Mueller (CC BY 2.0)Image Caption: Rockville Stone Arch BridgeEra_date_from: 1902
1979
After an initial difficulty in attracting customers (who were used to getting their water from public pumps and private wells and cisterns), Philadelphia's waterworks soon couldn't keep up with demand. John Davis and Frederick Graff designed a complete remodeling of the system in 1811 so that it could supply the city's growing needs.
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Image Credit: Public Domain (National Park Service)Image Caption: Philadelphia Municipal Water SupplyEra_date_from: 1801
1974
Philadelphia City Hall was the largest masonry load-bearing wall building in the world at the time of its completion in 1901, stood as the tallest occupied building in the United States until 1909, and still is the largest city hall in the United States. The building covers 14.26 acres, originally contained 634 rooms with over 1 million square feet of space, and with its tower and statue of William Penn rises a total of 548 feet above the ground. The construction of Philadelphia City Hall began in 1872 and was completed in 1901.
YearAdded:
Image Credit: Courtesy Flickr/elPadawan (CC BY-SA 2.0)Image Caption: Philadelphia City HallEra_date_from: 1901
2005
Innovations
From 1956 to 1993, the GE Re-entry Systems facility was home to thousands of engineers and technicians who solved the problem of vehicles successfully reentering the Earth’s atmosphere. As described by aerospace pioneer Theodore Von Karman, “ Reentry… is perhaps the most difficult problem one…
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A curious child who dissembled the clocks in her parent's home, Grace Hopper graduated from Vassar College with a B.A. in mathematics and physics. She continued her education at Yale University by completing a masters and Ph.D. in mathematics. She then returned to Vassar to teach.
During World… Read More
This is one of several, similar inclines built in western Pennsylvania during the late 19th century. It was designed by Samuel Diescher (1839-1915) after the great flood of 1889, to provide an efficient means of transportation between Westmont and the Conemaugh Valley. (See also the Monogahela…
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When Joseph Priestley discovered oxygen in 1774, he answered age-old questions of why and how things burn. An Englishman by birth, Priestley was deeply involved in politics and religion, as well as science. When his vocal support for the American and French revolutions made remaining in his…
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This Kaplan turbine is one of the first three machines to be put into service in the United States. Named for its Austrian inventor, Viktor Kaplan (1876-1934), the turbine was an outstanding innovation, operating with a high, nearly constant efficiency over a wide load range. The machine was built… Read More
The workforce consisted of less than 100 men, yet they finished construction in just 94 days. Such speed was possible due to the elimination of scaffolding. Instead, iron rods were used to support construction of the trusses between the towers, and workers moved back and forth across the rods. A…
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As a practical conveyance during the horse-and-buggy era, the Monongahela Incline was one of seventeen built and operated in Pittsburgh in the last century. Of the seventeen, the Monongahela and the Duquesne are the only two remaining operating units. While the Mt. Washington Incline was known…
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The Pennsylvania Turnpike was the first American paved highway of the automobile era in which tolls alone were expected to pay all project costs. The 160-mile roadway, which cut an east-west path from Pittsburgh to the state capital of Harrisburg, was considered a revolutionary example of…
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Philadelphia City Hall was the largest masonry load-bearing wall building in the world at the time of its completion in 1901, stood as the tallest occupied building in the United States until 1909, and still is the largest city hall in the United States. The building covers 14.26 acres,…
Read More
After an initial difficulty in attracting customers (who were used to getting their water from public pumps and private wells and cisterns), Philadelphia's waterworks soon couldn't keep up with demand. John Davis and Frederick Graff designed a complete remodeling of the system in 1811 so that it…
Read More
The third bridge built on the same site to carry railroad tracks across the Susquehanna River just north of Harrisburg, Pennsylvania, the Rockville Stone Arch Bridge, at 3,820 feet long and 52 feet wide, is believed to be the longest and widest stone-arch railroad bridge in the world. A central…
Read More
The first commercial central electric-generating station in the United States to use nuclear energy was the Shippingport Atomic Power Station of the Department of Energy and the Duquesne Light Company. In a dramatic high-tech display, ground was broken in 1954 during dedication ceremonies by…
Read More
Three rivers - the Allegheny, Monongahela, and Ohio - join in Pittsburgh, making the city a natural site for the building of bridges. But the Smithfield Street Bridge stands apart from other Pittsburgh bridges for several reasons: it replaced structures by two well-known bridge engineers, Lewis…
Read More
The Starrucca Viaduct of the Erie Railroad Company crosses Starrucca Creek in Lanesboro, Pennsylvania. It is one of the oldest and one of the longest railroad bridges in Pennsylvania. Its 18 slender, semicircular stone arches each span 50 feet and the structure rises 110 feet above the creek.…
Read More
This majestic viaduct was built during the golden age of railroading. It was at the western end of a major readjustment in grade and alignment of the Erie-Lackawanna Railroad, and had double tracks to carry the trains across the valley of Tunkhannock Creek. The Hallstead cutoff (between Scranton…
Read More
According to oral history, George Washington visited the canal diggings in 1792, and then again in 1794, while he was accompanying troops to suppress the Whiskey Rebellion in Western Pennsylvania.
The Union Canal Tunnel was a crucial structure allowing the connection of the eastern and…
Read More
The structure has two segments: an East Channel bridge consisting of four 175-foot spans and three 240-foot spans crossing from Harrisburg to City Island; and a West Channel bridge, consisting of seven 175-foot spans crossing from City Island to Wormleysburg.
With 15 truss spans totaling…
Read MoreSmaller and cheaper than a triple-expansion vertical engine, the horizontal cross-compound pumping engine, Pump No. 2, ran at relatively slow revolutions and was considered the height of engineering from the 1890s to World War I. This pumping engine at the York Water Company was built by the…
Read More
The City Plan of Philadelphia is a seminal creation in American city planning in that it was the first American City Plan to provide open public squares for the free enjoyment of the community and a gridiron street pattern featuring streets of varying widths: wide main streets and narrower side…
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One of the earliest and most impressive of America's great railroad engineering feats, the Horseshoe Curve was built as a means of overcoming a straight-line grade over the geological feature known as the Allegheny Escarpment or Allegheny front, which separates the ridge-and-valley section of…
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