In 1942, University of California, Davis (UCD) biologist, Jack Hanna recognized the need for breeding tomato varieties that ripen uniformly and withstand the rigors of mechanical harvesting. In 1949, UCD agricultural engineer Coby Lorenzen and Hanna began developing a mechanical tomato harvester. Parallel efforts by others, notably those started in 1957 by agricultural engineer Bill Stout and horticulturist Stan Ries of Michigan State University, eventually resulted in several different harvesting mechanisms. In the late 1950s, UCD agricultural engineer Steven J.
CA
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2005
The Rain Bird horizontal action impact drive sprinkler head was invented in 1933 by Orton Englehardt, a citrus grower and native of Glendora. The design offered slow rotation and uniform watering, benefits long sought by local irrigators. Clement M. LaFetra, a friend of Englehardt, urged early patent application. A patent was awarded on December 18, 1933. Englehardt, with no entrepreneurial aspirations, assigned all rights to LaFetra and his wife Mary Elizabeth. Production began in the LaFetra family barn on October 13, 1935.
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1990
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Public domain
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The second prototype of a track-type tractor built by the Holt Machinery Company of Stockton, California in 1905.
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1982
The Sidehill Combine Developed By The Holt Brothers At Stockton, California In 1891, A Significant Milestone In Grain Harvesting And Agricultural Efficiency That Opened New Land For Wheat Farming, Is Designated A Historic Landmark Of Agricultural Engineering By The American Society Of Agricultural Engineers 1982
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1982
The Food Canning Industry Was Revolutionized In 1920, When The Continuous Rotary Pressure Sterilizer Was Introduced By Albert R. Thompson. Thompson Was Chief Engineer For The Anderson-Barngrover Co. Of San Jose, California, Now The FMC Corporation. The Sterilizer Cooked Canned Products Uniformly Under Pressure For Short Period At High Temperatures, Then Quickly Cooled Them Under Pressure To Prevent Swelling Or Bursting. It Operated Continuously At Speeds Of Up To 400 Cans Per Minute.
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The FMC Rotary Pressure Sterilizer
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1992
George Stockton Berry (1847-1917) of Lindsay, Tulare County, California designed, built, and in 1886, operated the first self-propelled combine. He was granted a U.S. Patent (# 374,339) in1887. The Berry design embodied the following "firsts":
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2007
Known as the birthplace of Naval Aviation, North Island was the site of the first successful seaplane flight and the first amphibious flight in the U.S., both made by Glenn Curtiss. The first Naval pilot, Lt. T.G. Ellyson, was trained here at the Curtiss Aviation Camp. A flight school established here by Ellyson trained the next Naval aviators as well as the Navy’s first aviation maintenance personnel. North Island was also the site of the first night flight, and the home of the first aircraft carrier, the USS Langley.
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USS George Washington and USS Ronald Reagan pierside at Naval Air Station North Island
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2002
On this site, which was the Dutch Flats Airport, Charles A. Lindbergh made the first flight of his Spirit of St. Louis airplane, constructed in 60 days by dedicated employees of Ryan Airlines, Inc. The 20-minute flight on 28 April 1927 was witnessed by those who built the aircraft. Lindbergh describes the flight:
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The instrument panel of the Spirit of St. Louis
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2000
On 15 November 1950, the SSFL conducted its first official test with a Rocketdyne-designed XLR43-NA-1 large liquid propellant rocket engine, which later became the Redstone engine. Encompassing 2558 acres, 18 large static test stands, 5 component test laboratories and an advanced test facility, the SSFL and its dedicated employees have provided significant contributions to U.S. rocketry and space programs for over 50 years.
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Rocketdyne's test stand for testing the J-2 engine in Santa Susana Mountains, 1963
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2001
This site, formerly known as Oakland Municipal Airport, served as the gateway to the Pacific during aviation’s pioneering age of trans-Pacific flight. Among other notable events, Albert Hegenberger and Lester Maitland departed from the airfield on 28 June 1927 on the first flight from the mainland to Hawaii, and Amelia Earhart landed here on 13 January 1935, completing the first-ever solo flight from Hawaii to the mainland.
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Modern Oakland Municipal Airport aerial view
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2002
Founded in 1957, Raychem Corporation was the first company to successfully apply the new science of radiation chemistry to commercial use. This accomplishment led to the creation of tough new materials and high-performance products such as irradiated polyethylene insulated wire and heat-…
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The articulated wheel-base steam locomotive represents the final phase of steam locomotive development in size and power. The cab-in-front feature was widely used by the Southern Pacific Railroad beginning in 1909 to alleviate smoke and heat problems for locomotive personnel en route through…
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The IBM 350 disk drive storage development led to the breakthrough of on-line computer systems by providing the first storage device with random access to large volumes of data. Since its introduction on September 4, 1956, it has become the primary computer bulk-storage medium, displacing…
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With its landscaped embankments, limited access, and depressed roadway, Arroyo Seco Parkway (now known as the Pasadena Freeway) became the prototype of the Los Angeles freeway system. Motorists enjoy a scenic drive featuring landscaped embankments lush with native chaparral. The curving…
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The Atlas E-2 Space Booster, or launch vehicle, is a modified intercontinental ballistic missile developed by the Convair Division of General Dynamics and the U.S. Air Force. The basic concept of the Atlas system was proven in its first flight on June 11, 1957, followed over the years by the… Read More
Soon after gold was discovered at Sutter's Mill near Sacramento in 1848, General John Bidwell found gold near the Middle Fork of the Feather River. His discovery brought hordes of miners to the scene and Bidwell Bar was born. The Bidwell Bar Suspension Bridge over the Feather River was one of…
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All building materials were made fire-resistant to protect against incendiary bombing. Treatment involved a vacuum process of salt impregnation. During construction, high winds caused a partial collapse of some members. The ruined materials were piled for incineration, but would not burn; so the…
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A product of the Northern California Gold Rush, the Bridgeport Covered Bridge is believed to be the longest, single-span, wooden covered bridge in the United States. Crossing the south fork of the Yuba River at a span of 233 feet, the bridge was built by the Virginia City Turnpike Company as…
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"SPICE (Simulation Program with Integrated Circuit Emphasis) was created at UC Berkeley as a class project in 1969-1970. It evolved to become the worldwide standard integrated circuit simulator. SPICE has been used to train many students in the intricacies of circuit simulation. SPICE and its… Read More
Stretching 242 miles from the Colorado River on the California-Arizona border to its final holding reservoir near Riverside, California, the Colorado River Aqueduct consists of more than 90 miles of tunnels, nearly 55 miles of cut-and-cover conduit, almost 30 miles of siphons, and five…
Disney engineers designed this monorail system based on the system developed by Axel Wenner-Gren of the Alweg Company in Cologne, West Germany. Wenner-Gren ran his experimental monorail in 1952 on a level track, and when adopted by Disney in 1959, it was designed to simulate the terrain typical of… Read More
Established in 1929, and owned by several different aviation companies through its history, the Downey site was the design, test, and production site for various airplanes and spacecraft that defined American aerospace accomplishments in the 20th century. Its rich legacy includes the P-51…
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The F&CH Cable Railway, which opened in 1887, was designed and built by civil engineer Howard C. Holmes (1852-1921). The line is an amalgamation of the Powell Street Railway and the Park and Cliff House Railway. It was one of the most complicated cable-car systems to run from a single station… Read More
"The State [of California] agreed to construct the dam using convict labor for which consideration the State received a grant of land for the construction of a prison and water power rights from the impounded water ...; The work progressed slowly during the dry season by disinterested convict…
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The historic Folsom Power House #1 marks one of the first successful uses of hydroelectric power in the world and the first successful transmission of power long distance (twenty-two miles to Sacramento). The old Folsom Power House still shelters the machinery generated to drive streetcars and…
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The Fresno scraper established the basis for the modern earthmoving scraper, being able to scrape and move a load of soil, then discharge it at a controlled depth. It quadrupled the productivity of manual labor, replacing hand shoveling of earth into horse carts.
James Porteous, a…
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Gilman Hall, built in 1916-1917, accommodated a growing College of Chemistry by providing expanded research and teaching facilities for faculty and students specializing in physical, inorganic and nuclear chemistry. Work performed at Gilman Hall helped advance the fields of chemical…
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Put in service in 1937, this world-renowned bridge, conceived by Joseph Strauss and designed largely by Charles Ellis, was the longest single span (4,200 feet) in the world for a quarter century.
As with many civil engineering projects in their conceptual stages, naysayers scoffed at the…
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The first practical demonstration of this tractor took place in a peat field on Roberts Island on November 24, 1904, and was patented and in production by December of 1907. The existing machine represents the earliest gasoline-powered track-type tractors that were to help revolutionize…
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When completed in 1888 to a height of 90 feet, Sweetwater Dam was once the tallest masonry arch dam in the United States, and it led to many others of the same basic design. The original construction began in November 1886 under the direction of Frank E. Brown (civil engineer for Bear Valley Dam…
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