Engineering Innovations
Displaying 401 - 420 of 682
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Link C-3 Flight Trainer Binghamton, NY |
During the 1920s, Edwin A. Link was employed in his father's organ building and repair business. He obtained his pilot's license in 1927 and became convinced that a mechanical… |
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Liverpool Manchester Railway & Site of Rainhill Trials Merseyside, |
The Rainhill Trials were an important competition in the early days of steam locomotive railways. The Liverpool Manchester Railway was the first railway to rely exclusively on… |
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Ljungstrom Air Preheater Stockholm, |
The Ljungstrom air preheater is a regenerative heat exchanger, invented in the 1920s and soon used throughout the world. Dr. Fredrik Ljungstrom, then technical director at… |
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Lombard Steam Log Hauler Patten, ME |
This steam crawler-tractor emancipated horses from the killing work of hauling trains of sleds over iced roads in the winter woods of the United States and Canada. Designed,… |
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Lookout Mountain Incline Railway Chattanooga, TN |
At the mountain where the Civil War's Battle Above the Clouds was waged, tourist business has thrived from the building of its first toll road (Whiteside Pike) in 1857 to present… |
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Louisville and Portland Canal Locks & Dam Louisville, KY |
Chartered in 1825, the Louisville and Portland Canal Company was authorized to construct a canal around the rapids called the "Falls of the Ohio." Construction started on March 1… |
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Louisville Waterworks Louisville, KY |
In the 18th century, French architect Claude-Nichols Ledoux was known for forging architectural beauty with industrial efficiency. One hundred years later his vision was given new… |
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Lowell Waterpower System Lowell, MA |
Much of the sophisticated system of canals, dams, gates, and tunnels built to manage water power in 19th-century Lowell is preserved today as the basis of the Lowell National… |
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Luebben Round Baler Minden, NE |
Luebben Hay Baler - Historic Landmark of Agricultural Engineering. In 1892, Hugh Luebben from Sutton, Nebraska, with sons Melchior and Ummo built a mobile machine to produce round… |
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Lunken Field Cincinnati, OH |
Lunken Field, now also known as Cincinnati Municipal Lunken Airport, opened in 1925 on ground purchased from the Cincinnati Polo Club. The nation’s largest municipal airport at… |
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Machu Picchu , |
Machu Picchu represents the culmination of Inca public works building standards and technology, as well as 4,000 years of Andean community development. This landmark is the… |
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Mackinac Bridge St Ignace, MI |
The Mackinac (pronounced "Mack-in-awe") Bridge (1957) spans the Straits of Mackinac between Lake Michigan and Lake Huron, connecting the Lower and Upper peninsulas of Michigan.… |
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Magma Copper Mine Air Conditioning System , AZ |
The Magma Copper Mine AC system designed by the Carrier Corporation was the first underground mechanical air conditioning system in North America. The initial installation of… |
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Maine Turnpike , ME |
Maine's heavy snows led turnpike maintenance personnel to bring "left-handed" snow plows into prominence. By using left-handed and traditional right-handed plows in tandem, they… |
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Manhattan Bridge Brooklyn, NY |
When opened in 1909, the 1,470 foot long main span of the Manhattan Bridge was the third longest suspension bridge span in the world, after the nearby Brooklyn and Williamsburg… |
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Manitou and Pike's Peak Railway Manitou Springs, CO |
The Broadmoor Manitou and Pikes Peak Cog Railway (also known as the Pikes Peak Cog Railway) is a cog railway that climbs one of the most iconic mountains in… |
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Marlette Lake Water System Carson City, NV |
In the mid-1800s Virginia City was America's greatest producer of high-grade silver and gold ore. When mining activities began, natural springs provided water to the camps. As the… |
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Marshall Building Milwaukee, WI |
Designed by Claude A. P. Turner, a pioneer of reinforced concrete construction, the Marshall Building was constructed originally in 1906 as a five-story building. In 1911 the… |
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Mason-Dixon Line , |
The granite milestones marking the Mason-Dixon Line bear crests from the two parties involved in the land-grant dispute, the families of William Penn and Charles Calvert (also… |
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Massey-Harris #20 Combine Dearborn, MI |
Designated A Historic Landmark Of Agricultural Engineering The Massey-Harris No. 20 was the First Commercially- Successful Self-Propelled Combine Used to Harvest Small Grains… |
