Engineering Innovations
Displaying 501 - 520 of 682
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Pickup Forage Harvester Madison, WI |
William J. Conroy Of Aylmer, Quebec, Received Patent No. 465,127 On The First Field Hay Chopper On 15 December, 1891. Its Sickle Cut The Crop, Which Was Elevated Directly Into A… |
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Pierce-Donachy Ventricular Assist Device Hersjey, PA |
This is the first extremely smooth, surgically implantable, seam-free pulsatile blood pump to receive widespread clinical use. In its use in more than 250 patients, it has been… |
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Pilatusbahn Alpnach, |
The Pilatusbahn—the steepest rack railway in the world—has operated successfully since its opening in 1889 over a route of 4.62 kilometers (2.87 miles) between Alpnachstad on Lake… |
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Pin-Ticketing Machine Miamisburg, OH |
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… |
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Pioneer Oil Refinery California Star Oil Works Newhall, CA |
The economic situation in the whale oil business (for lighting), coupled with the increased demand for lubricants, stimulated growth in the U.S. petroleum industry. The drilling… |
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Pioneer Zephyr Chicago, IL |
In the late 1920s, the automobile cut railroad passenger service by more than half. The debut of the Pioneer Zephyr heralded a comeback in 1934, touring the country and being seen… |
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Pioneering Work on the Quartz Electronic Wristwatch Neuchâtel, |
A key milestone in development of the quartz electronic wristwatch in Switzerland was the creation in 1962 of the Centre Electronique Horloger of Neuchâtel. The Centre produced… |
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Pit Silo Columbia, MD |
Designated a Historic Landmark of Agricultural Engineering at Oakland Manor In 1876 Francis Morris Built Brick Silos in His Barn and Introduced the Practice of Making Corn Silage… |
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Pit-Cast Jib Crane Birmingham, AL |
Used to lift molten iron to molds where it was cast into pipe, jib cranes were the sole means of conveyance in the pit-casting process. When pit casting was replaced by… |
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Pitcairn Field #2 Horsham, PA |
On December 18, 1928, Arthur Rawson, a factory pilot for the Cierva Autogiro Company, and then Harold F. Pitcairn, flew a Cierva C.8W Autogiro from Building #3 at… |
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Point Mugu Naval Base , CA |
Established in 1946 to provide a comprehensive test and evaluation site for tactical missiles, Point Mugu has been instrumental in the development, test, evaluation and in-service… |
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Point of Beginning, U.S. Public Lands East Liverpool, OH |
The "Land Ordinance of 1785" required that U.S. lands in the public domain be surveyed before sale, and that the surveys be made in accordance with a consistent, integrated system… |
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Pole Frame Buildings Lawrence, KS |
Pole Frame Building Historic Landmark Of Agricultural Engineering - In the mid 1940's, "B G" Perkins of Doane Agricultural Service introduced a new pole-frame construction along… |
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Polymer Research Institute Brooklyn, NY |
The Polymer Research Institute was established in 1946 by Herman F. Mark, a pioneer in the study of giant molecules. The Institute brought together a number of polymer researchers… |
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Ponte Maria Pia Bridge Oporto, Norte |
Built to cross one of the steepest valleys along the Douro River, the Ponte Maria Pia was the first major work to emerge from the French firm of Gustav Eiffel and Company,… |
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Port Washington Power Plant Milwaukee, WI |
The Port Washington Power Plant of the Wisconsin Electric Company was the most thermally efficient steam power plant in the world for many years following its opening in 1935. Its… |
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Portland Head Light Cape Elizabeth, ME |
The Portland Head Light was the first lighthouse to be constructed in Maine and the first one completed and put into service by the Federal government under the Lighthouse Act of… |
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Portland Observatory Portland, ME |
The Portland Observatory was built in 1807 by Captain Lemuel Moody to serve as a communication station for Portland Harbor. Portland Observatory was one of the earliest marine… |
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Portsmouth-Kittery Naval Shipyard , NH |
The Portsmouth Navy Yard is a United States Navy shipyard in Kittery on the southern boundary of Maine near the city of Portsmouth, New… |
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Potowmack Canal and Locks Fairfax County, VA |
These canals and locks are a part of the first extensive system of canal and river navigation works undertaken in the United States. The idea for the canal was proposed by George… |
