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Parshall Flume
Society: ASABE Main Category: Agricultural & Biological Sub Category: Era: 1920-1929 DateCreated: 1922 Lory Student Center Fort Collins State: CO Zip: 80521 Country: USA Website: Creator: Parshall, Ralph L.

Since the beginning of irrigated agriculture, it has been important to measure flows of irrigation water. Accuracy of early water measurement methods often suffered because of trash or sediment in the water, or unusual flow conditions. Ralph L. Parshall saw this problem when he began working for the USDA in 1915, as an irrigation research engineer. In 1922 he invented the flume now known by his name. When this flume is placed in a channel, flow is uniquely related to the water depth.

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Davidson Hall Iowa State
Society: ASABE Main Category: Agricultural & Biological Sub Category: Education Era: 1920s DateCreated: 1922 Sukup Hall Ames State: IA Zip: 50011 Country: USA Website: Creator:

Designated an Historic Landmark in Honor of J. Brownlee Davidson a Founder of Agricultural Engineering First President of American Society of Agricultural Engineers Organizer of the First Professional Agricultural Engineering Curriculum July 1905 by American Society of Agricultural Engineers

Image Credit: Courtesy (CC BY-SA 3.0) Image Caption: Era_date_from:
LeTourneau "Mountain Mover" Scraper
Society: ASME Main Category: Mechanical Sub Category: Era: 1920-1929 DateCreated: 1922 LeTourneau University Longview State: TX Zip: 75602 Country: USA Website:, Creator: LeTourneau, Robert G.

 When Robert G. LeTourneau started moving earth in 1919, he thought that land leveling should require only one man. In 1920, by installing a generator and electric motors, R.G. was able to control the scraper blade from the tractor seat while driving the tractor.

 In June 1922, LeTourneau developed his “Mountain Mover” with a telescoping bowl. He incorporated a floor behind the cutting edge taken from his previous designs, and employed welding instead of riveting to save weight.

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Society: ASME Main Category: Mechanical Sub Category: Minerals Extraction & Refining Era: 1920-1929 DateCreated: 1922 Cameron World Headquarters Houston State: TX Zip: 77041 Country: USA Website: Creator: Abercrombie, James, Cameron, Harry
This mechanism allowed the manual closing of a well, saved lives and prevented surface oil accumulation at drilling sites, quickly becoming an industry standard. In the early days of oilfield operations, there was no way to control the underground pressures encountered during drilling. When an oil or gas reservoir was tapped, wells were allowed to "blow out" until pressure was reduced sufficiently to allow capping. Many inventors attempted to develop a device to control such blowouts. In 1922, oil wildcatter James Smither Abercrombie (1891-1975) and machinist Harry S.
Image Credit: Original Image: Flickr/Ed Schipul (CC BY-SA 2.0) Image Caption: A modern Blowout Preventer (BOP) Era_date_from: 1922
Columbia River Scenic Highway
Society: ASCE Main Category: Civil Sub Category: Roads & Rails Era: 1920-1929 DateCreated: 1922 Columbia River Hwy Cascade Locks State: OR Zip: 97014 Country: USA Website: Creator: Lancaster, Samuel , Hill, Samuel

A project that combined great engineering ambition and burgeoning civic pride, the Columbia River Highway was built at the dawn of the automobile age out of a desire to bring greater attention to the growing population and natural beauty of the Pacific Northwest. By the time of its completion in the 1920s, the 73.8-mile highway had become a textbook example of modern highway construction and an important commercial and recreational link between Oregon's coastal Willamette Valley and the inland areas of eastern Oregon and Washington. 

Image Credit: Courtesy Flickr/Doug Kerr (CC BY-SA 2.0) Image Caption: Columbia River Scenic Highway Era_date_from: 1922
Miami Conservancy District
Society: ASCE Main Category: Civil Sub Category: Water Supply & Control Era: 1920-1929 DateCreated: 1922 Taylorsville Dam (One of 5 Dams) Huber Heights State: OH Zip: 45424 Country: USA Website: Creator: Flood Prevention Committee, Morgan, Arthur Ernest

The Miami Conservancy District flood control project was the direct result of the disastrous flood of 1913, when waters from the Miami, Stillwater, and Mad rivers flooded Dayton and surrounding communities in the Miami Valley. More than 400 lives were lost and property damage exceeded $100 million. When Dayton flooded, great fires raged, adding to the devastation. Many believed that the area would never recover. 

Image Credit: Courtesy Flickr/bobosh_t (CC BY-SA 2.0) Image Caption: The Taylorsville Dam, one of the five dry damns to come out of the Miami Conservancy District Era_date_from: 1922
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