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Pin-Ticketing Machine
Society: ASMEMain Category: MechanicalSub Category: RetailEra: 1900-1909DateCreated: 1902Monarch Marking SystemsMiamisburgState: OHZip: 45342Country: USAWebsite: http://www.asme.org/about-asme/history/landmarks/topics-m-z/retail/-150-pin-ticketing-machine-%281902%29, https://www.asme.org/getmedia/46f6b343-2c49-45b9-b18e-ee8784c1b49b/150-Pin-Ticketing-Machine-1902.aspxCreator: Kohnle, Frederick

This was the first successful machine for mechanizing the identification and price marking of retail merchandise. At a single stroke of the operating handle, the machine formed a tag from a roll of stock, imprinted it with price and other information, formed a wire staple, and stapled the tag to the merchandise. This means for dispensing with handmade and written tags amounted to a minor revolution in the then rapidly expanding retail industry.

YearAdded:
1990
Image Credit: Courtesy ASMEImage Caption: Pin-Ticketing MachineEra_date_from: 1902
Philadelphia Municipal Water Supply
Society: ASCEMain Category: CivilSub Category: Water Supply & ControlEra: 1800-1829DateCreated: 18012600 Benjamin Franklin PkwyPhiladelphiaState: PAZip: 19130Country: USAWebsite: http://www.asce.org/Project/Philadelphia-Municipal-Water-Supply/Creator: Graff, Frederick , Latrobe, Benjamin

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. 

YearAdded:
1974
Image Credit: Public Domain (National Park Service)Image Caption: Philadelphia Municipal Water SupplyEra_date_from: 1801
Philadelphia City Hall
Society: ASCEMain Category: CivilSub Category: BuildingsEra: 1900-1909DateCreated: 19011 Penn SquarePhiladelphiaState: PAZip: 19107Country: USAWebsite: http://www.asce.org/Project/Philadelphia-City-Hall/Creator: McArthur, John , Walter, Thomas

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:
2005
Image Credit: Courtesy Flickr/elPadawan (CC BY-SA 2.0)Image Caption: Philadelphia City HallEra_date_from: 1901
Pennsylvania Turnpike (Old Section)
Society: ASCEMain Category: CivilSub Category: Roads & Rails, TransportationEra: 1940-1949DateCreated: 1940Abandoned Pennsylvania Turnpike
Breezewood
HarrisburgState: PACountry: USAWebsite: http://www.asce.org/project/pennsylvania-tunpike-(old-section)/Creator: Pennsylvania Turnpike Commission

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 transportation system design and served as a model for the Interstate Highway System.

YearAdded:
1988
Image Credit: Courtesy Flickr/Doug Kerr (CC BY-SA 2.0)Image Caption: Pennsylvania Turnpike (Old Section)Era_date_from: 1940
Pelton Impulse Water Wheel
Society: ASCEMain Category: CivilSub Category: Power GenerationEra: 1870-1879DateCreated: 1878CamptonvilleState: CACountry: USAWebsite: http://www.asce.org/Project/Pelton-Impulse-Water-Wheel/Creator: Pelton, Lester

Water wheels have been used to power mills and pumps for centuries. However, the traditional water wheel was inefficient: water hitting a bucket would splash back against the next bucket, slowing the wheel. This is especially true when water is delivered to the buckets under very high pressure.

YearAdded:
1973
Image Credit: Public Domain (Author's Choice)Image Caption: Pelton Impulse Water WheelEra_date_from: 1878
Peavey-Haglin Concrete Grain Elevator
Society: ASCEMain Category: CivilSub Category: BuildingsEra: 1900-1909DateCreated: 19005505 Minnesota 7 Service RdSt. Louis ParkState: MNZip: 55416Country: USAWebsite: http://www.asce.org/project/peavy-haglin-concrete-grain-elevator/Creator: Peavy, Frank , Haglin, Charles

No image dominates the Midwestern landscape like the monolithic grain elevator, whose present shape and construction owe much to grain company operator Frank Peavy and architect-builder Charles Haglin.

Wanting to improve on the flammability and cost of traditional wood-cribbed construction, Peavy speculated that reinforced concrete, in its infancy at the turn of the century, would outperform other materials. But critics feared that the elevator would collapse due to the vacuum created when grain was emptied from the air-tight structure.

YearAdded:
1983
Image Credit: Courtesy Wikipedia/Original Uploader was Elkman (CC BY-SA 3.0)Image Caption: Peavey-Haglin Concrete Grain ElevatorEra_date_from: 1900
Discovery of Organic Free Radicals by Moses Gomberg
Society: ACSMain Category: ChemicalSub Category: Frontiers of KnowledgeEra: 1900-1909DateCreated: 1900University Of MichiganAnn ArborState: MICountry: USAWebsite: https://www.acs.org/content/acs/en/education/whatischemistry/landmarks/freeradicals.htmlCreator: Gomberg, Moses

In 1900, Moses Gomberg, Professor of Chemistry at the University of Michigan, confirmed the existence of a stable, trivalent organic free radical: triphenylmethyl. In so doing, he challenged the then prevailing belief that carbon could have only four chemical bonds. Gomberg’s discovery made a major contribution to theoretical organic chemistry and fostered a field of research that continues to grow and expand. Today, organic free radicals are widely used in plastics and rubber manufacture, as well as medicine, agriculture and biochemistry.

YearAdded:
2000
Image Credit: Public Domain (Copyright Exp.)Image Caption: Discovery of Organic Free Radicals by Moses GombergEra_date_from: 1900
Society: ASABEMain Category: Agricultural & BiologicalSub Category: Equipment, Harvesting and BalingEra: 1940-1949DateCreated: 1943National Museum of History & TechnologyWashingtonState: DCZip: 20560Country: USAWebsite: http://www.asabe.org/awards-landmarks/asabe-historic-landmarks/old-red-cotton-picker-10.aspxCreator: Rust, John, Rust, Mack
"The development of the cotton picker was the most important single factor which enabled the American cotton industry to stay alive," observed Dr. George S. Buck, Jr., director of research for the National Cotton Council recenty. Some 96% of the 1969 U.S. cotton crop was harvested by machines, points out J.W. Wegener, manager of International Harvester's Memphis Works manager. "Old Red" was built by International Harvester in 1943, retired in 1959, and restored in 1964.
YearAdded:
1978
Image Credit: Photo Courtesy of ASABEImage Caption: "Old Red" now resides in the National Museum of History & Technology, Smithsonian Institution, Washington, DC.Era_date_from: 1943
Nucleic Acid and Protein Chemistry Research at Rockefeller University
Society: ACSMain Category: ChemicalSub Category: Cradles of ChemistryEra: 1900-1909DateCreated: 1901Rockefeller UniversityNew YorkState: NYCountry: USAWebsite: https://www.acs.org/content/acs/en/education/whatischemistry/landmarks/rockefelleruniversity.htmlCreator: Rockefeller, John , Levene, Phoebus

For more than a century, scientists at Rockefeller University have enhanced our understanding of the molecular basis of life — specifically the relationship between the structure and function of nucleic acids and proteins. They showed that DNA transfers genetic information and that the sugars ribose and deoxyribose are the key building blocks of the nucleic acids RNA and DNA.

YearAdded:
2000
Image Credit: Courtesy Flickr/S Shepherd (CC BY 2.0)Image Caption: Nucleic Acid and Protein Chemistry Research at Rockefeller UniversityEra_date_from: 1901
NS Savannah
Society: ASMEMain Category: MechanicalSub Category: Water TransportationEra: 1960-1969DateCreated: 19624601 Newgate AveBaltimoreState: MDZip: 21224Country: USAWebsite: https://www.asme.org/about-asme/who-we-are/engineering-history/landmarks/87-ns-savannahCreator: New York Shipbuilding Corporation, Babcock & Wilcox Company

The N.S. Savannah was the first nuclear-powered cargo-passenger ship, built by the New York Shipbuilding Corporation at Camden, New Jersey. The 74 maximum-power thermal megawatt pressurized-water reactor was supplied by the Babcock & Wilcox Company. Nearly 600 feet long with 22,000-tons displacement, the ship at top speed surged along at 24 knots, with more than 22,300 shaft horsepower to a single propeller. A joint venture by the U.S. Maritime Administration and the Atomic Energy Commission to the design of George G. Sharp Inc.

YearAdded:
1983
Image Credit: Public Domain (U.S. Government)Image Caption: NS SavannahEra_date_from: 1962
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Innovations

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UC-Blackwelder Tomato Harvester

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Vegetated Waterways

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