461:. However, this early thresher, called the "ground hog," was quite unlike the conventional thresher/separators that developed since that time. For instance, the ground hog's separating unit was largely a slatted apron which pulled the grain across a screen. John Nichols and David Shepard realized that the apron style separator was not a technology that was going to work. Consequently, in 1857, the Nichols and Shepard Company developed the first "vibrator" separating unit for the small grain thresher. This vibrator-style of separator soon became universally adopted by all other thresher/separator manufacturers. The Nichols and Shepard Company received a patent from the United States government for their "Vibrator" grain separator on January 7, 1862. The company also obtained a number of other patents for other advances in the thresher/separator technology, for original improvements in steam engine traction technology. During the 1920s, the Nichols and Shepard Company developed a successfully functioning
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The ownership considered leaving South Bend in the wake of the destruction of parts of the plant, with newspapers stating that they feared "the
Socialistic influences operating among the foreign elements at South Bend...probably emanating from Chicago." Many workers employed in plow factories died from grindstone consumption. This is the result of the dust from emery wheels and grindstone in the grinding and polishing rooms. āIn South Bend, the āgrinderā is either a Pole or a Belgian; so when he dies, society knows nothing about it.ā Upon the death of his father in 1908, Joseph D. Oliver, the only son of James and Susan (Doty) Oliver took over the management of the Oliver Chilled Plow Works. By 1910, the company was manufacturing a wide variety of farm tillage implements in addition to the chilled plow. Production had reached the point that, in 1910, the company purchased over 40,000 tons of
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mounted engine operating at 400 RPMs. Each cylinder has an 8-inch bore and a 12-inch stroke. The centerline of the crankshaft is offset from the cylinder by 2-3/4 inches to increase torque on the power stroke. The engine is oil-cooled rather than water-cooled. The engine runs either gasoline or a mixture of kerosene and water as the water helps eliminate the knock that occurs when burning kerosene. The tractor had two forward speeds, either 2.2 or 4 MPH. The 20-40 was considered a road-building and maintenance tractor as well as a farm tractor. To help reduce shock, the front and rear axles were spring mounted, a rarity for the time. The name "Steel King" derives from the fact that most of the parts were made from steel or semi-steel, except for some engine parts. It used a
Centrifugal governor rather than the older hit-and-miss governors.
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along with an oil-cooled engine. It ran on either gasoline or kerosene. It is 14,000 pounds and a copy at the
Smithsonian is the oldest surviving internal combustion engine tractor in the United States and is held by the Smithsonian's National Museum of American History. It produced 18 horsepower at the drawbar and 30 at the belt. The tractor at the Smithsonian was used at the George Mitchell farm near Charles City Iowa for twenty-three years. Following this, the Oliver Tractor Corporation bought it back and donated it to the Smithsonian in 1960. It was fully restored in 2003, with funding provided by the Hart-Parr/Oliver Collectors Association.
266:. Also, the vapors which arise as the molten metal comes in contact with the mould are expelled through a spout. Had these vapors been trapped in the mould, they would have caused impurities and would have weakened the plowpoint at the place where it should have been the hardest. To harden the plowpoints, Oliver arranged his moulding apparatus in such manner that the surface of the chill was in a position so that the melted metal first came into contact with the chill at the edge of the plowshare. This insured a hard plow cutting point.
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engine. It used forced feed lubrication and open gears used to drive the rear wheels. As required by law in the state of
Nebraska, it was tested at the University of Nebraska and re-rated at 15-30. The 15-30 design was upgraded in 1924 to become the 16-30. The Desing was again upgraded in 1926 to become the 18-36. Hart Parr built the 18-36 till 1930.
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could not be found for his tractor project. "There's money around here that might be interested," replied the elder Hart, admitting for the first time that his son's ambition was not folly. They then found another investor in
Charles D. Ellis, a local attorney, who invested $ 50,000 in additional capital.
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executives. The executives took over Deutz-Allis and then purchased the White tractor line in 1991. The White tractor line was produced by AGCO from 1991 through 2001 when the White line was merged with AGCO-Allis to create the AGCO brand. The White name continues on under AGCO with the White
Planter
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and other events. Hart was patient. "We can't force it," he said. "We have to let it simmer into the market." Hart-Parr No. 1 featured a unique oli-cooled system that used expansion bulbs on oil-cooling radiators. It used two horizontal cylinders with a bore of 9 inches and a stroke of 13 inches. The
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Company, almost immediately after a transitional period when virtually identical tractors and combines were marketed under different trade names. A few models were sold as Oliver, Minneapolis, or
Cockshutt, the major difference being the paint colour. As the transaction continued, the White name was
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IXB3 engine. In late 1957 (diesel) and early 1958 (gas) OC-4's came equipped with 3 cylinder
Hercules 130 engines. Most noticeable was the change to a 'beefier' more industrial front grill. In 1962 at the new Charles City, Iowa, crawler production line, the last incarnation of the OC-4 was produced.
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In 1900, as the engine business expanded, Hart and Parr decided to move their company from
Madison to Charles City. Hart-Parr Company was organized on June 12, 1901, at Charles City, Iowa. Ground was broken for the new factory on July 5 that year. By the following December, the Hart-Parr Company was
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During the war years of the 1940s Oliver
Corporation expanded rapidly into non-agricultural production, most notably in the defense sector. By 1947, the Oliver Corporation employed 9,000 with 37% of Oliver's production for defense contracts. Product lines included graders, forklifts, road rollers,
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pulley. The tractor produces over a thousand pounds of torque. It employs a unique elliptical reverser to allow it to reverse. Ignition impulse is provided by a battery during start-up and a dynomo once the flywheel gains speed. It contains 200 quarts of light oil for coolant, so it never freezes.
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Following their graduation from the University of Wisconsin in 1897, Hart and Parr gathered $ 3000 in capital and formed the Hart-Parr Gasoline Engine Company. Towards the end of 1899, Charles Hart paid a visit to his parents in Charles City, Iowa. He complained to his father that development funds
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White Motor Corporation shut down the original Oliver Chilled Plow Works factory (factory no. 1) in 1985. The Oliver buildings remained vacant until 2002 when most were demolished to make way for an industrial park. The Oliver powerhouse is now restored and occupied by Rose Brick & Material.
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Following the 1929 merger of the four companies into the Oliver Farm Equipment Company, several other corporate acquisitions were made by the new company over a period of years. The first of these post-merger acquisitions occurred a mere year later, in 1930, when the Oliver Farm Equipment Company
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By 1915 the sod-busting or āPrairieā style tractor tractors were becoming obsolete as they were far too big and clumsy for the average farmer of the time. The need for smaller tractors led to the two-stroke āLittle Devilā which was a complete failure and the tractors were recalled. It was rated at
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covered 58 acres (230,000 m) with 25 of those acres under roof. In January 1885, the plant's mostly Polish workers went on strike in protest of cuts to wages and hours in response to a glut of stock. Veterans of the Civil War with fixed bayonets finally ejected the strikers from the premises.
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Another problem common to cast iron plow bottoms was the lack of soundness and uniformity in the metal's molecular structure, which meant that some cast iron bottoms would have soft spots in the hardened surface, reducing the wearability of the plow bottom. Improvements made by James Oliver to his
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of Canada in February 1962, and it was made a subsidiary of Oliver Corporation. Cockshutt had also previously, in 1928, marketed tractors made by Hart-Parr, and again from 1934 through the late 1940s it marketed tractors made by Oliver, only changing the paint color to red, and changing the name
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The Hart Par Model 3 was released in 1903 and is recognized by the American Society of Mechanical Engineers as the first successful farm tractor in the world powered by an internal combustion engine. Fifteen tractors were produced in total. The two horizontal cylinders use a hit-and-miss governor
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The Hart-Parr 30-60 "Old Reliable" is a 2-cylinder Kerosine burning that weighed 10 tons that was built from at least 1913. The engine displaces 2356 cubic inches The tractor is a dual front-wheel style. The 30-60 is so named as it generates 30 horsepower at 300 RPM. at the drawbar and 60 at the
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The Hart-Parr 20-40, also called the "Steel King" is a tricycle tractor produced by the Hart-Parr company at their facility in Charles City Iowa, starting in 1911 and going till 1914. Approximately 197 were produced: 99 in 1912, 49 in 1913, and 49 in 1914. The 20-40 has a two-cylinder vertically
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In 1918, Hart-Parr released the āNew Hart Parrā 12-25 model. This tractor was significantly smaller than the old āPrairieā style tractor tractors. The 12-25 model formed the basis for all subsequent Hart-Parr tractors and was equipped with a two-cylinder, slow-speed, un-pressurized water-cooled
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Thus, James Oliver's chilled plow bottom became a practical success and on July 22, 1868, the Oliver's business was incorporated as the South Bend Iron Works. In 1871, the company sold 1,500 plows per year. By 1874 this figure had increased to 17,000 plows a year. At the time of death of James
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from the United States government for his chilled plow shares and in February 1869, he obtained another patent for his process. What Oliver accomplished by this invention is sometimes referred to as chill hardening, or simply chilling. The purpose of chilling is to produce an extremely hard and
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bought the business and enlarged it during the Civil War as the Pennsylvania Agricultural Works. In 1889, the A. B. Farquhar Company began building threshing machines and other farm machinery. Later, the company started the production of cultivators for farm use (especially potato harvesting
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The Cleveland Tractor Company was created by Rollin H. White in 1916. In 1918 the name was switched to Cletrac. Later they became a part of the Oliver family in 1944. At the October 3, 1944 stockholders meeting, with approval of the stockholders, the corporate name was changed to "The Oliver
415:", a combination of the words "traction" and "power", instead. For this reason, and because the Charles City plant was the first to be continuously and exclusively used for tractor production, Hart-Parr often used the slogan "Founders of the Tractor Industry" in their advertising.
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Four companies merged on April 1, 1929, to form the Oliver Farm Equipment Company: The Oliver Chilled Plow Company, dating from 1855; the Hart-Parr Tractor Company from 1897, and the American Seeding Machine Company and Nichols and Shepard Company, both dating from 1848.
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By 1929, each of these companies had reached a point where continuing operations independently would not be feasible. For most of them, the market had some time earlier reached a saturation point, and in some instances, their machines were dated and rapidly approaching
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more and more applied to the tractor line, with the Oliver 2255, also known as the White 2255, being the last purely "Oliver" tractor. With the introduction of the White 4-150 Field Boss in 1974, the White name would be used, henceforth to the exclusion of all others.
441:/separator in 1852. The business was successful from the start, so successful that some time in the 1850s he took on a partner by the name of David Shepard. Together they formed a partnership known as Nichols, Shepard and Company which manufactured farm machinery,
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became a wholly owned subsidiary of White Motor Corporation in 1963. The Cockshutt production line was dropped and went back to using Olivers painted red. The Minneapolis-Moline and Oliver lines were blended until there was virtually no difference between them.
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in 1945, but the result turned out to be ahead of its time, and its small-scale production was discontinued in 1948. The agricultural Cletrac HG gradually evolved into the more industrial Oliver OC-3 which was produced from 1951 through 1957.
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broadened the line of farm equipment offered by Oliver to include potato diggers which were then sold under the "Oliver" name. However, following the 1930 merger production of the "Oliver" potato diggers moved out of La Crosse, Wisconsin to
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Hart-Parr No. 1 was completed in 1902 and is recognized as one of the first practical tractors built. However, customers did not immediately beat the proverbial path. However, Hart-Parr was able to field one salesman to run demonstrations at
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Corporation". In 1962 White Motors bought Oliver, thus bringing Cletrac back to the White Family. Unfortunately, they didn't seem to miss Cletrac at all, and only three years later, crawler tractor production ended at Charles City in 1965.
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durable exterior of the object. This is done by including "chills", pieces of metal, into the sand mold, such that when the molten iron is poured into the mould, the portion next to the chill cools rapidly, hardening in a way akin to
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surface on the metal plow bottom had been attempted. All of these processes failed because the hard surface created was very thin and would soon wear through to the soft iron under the heat-treated surface. James Oliver developed his
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E Reconnaissance planes at a Battle Creek, Michigan aviation division set up exclusively for defense contracts. The Charles City, Iowa plant assembled transmissions for the 25-ton crane carriers and built and assembled 106 mm
144:. Accordingly, the American Seeding Machine Company established its corporate headquarters at Springfield in the facilities formerly operated by the Superior Drill Company. Other companies which formed the 1903 merger include
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had a long history of truck manufacturing. On November 1, 1960, White Motor acquired Oliver, changed the name to Oliver Corporation, and made it a wholly owned, separately operating subsidiary of the White Motor Corporation.
223:, the cast iron plows would not "scour"; that is, the sticky soil would cling to the plow, disrupting the flow of soil over the plow's surface, making plowing impossible. Thus, when settlement of North America moved over the
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process to include rapid chilling of the molten iron near the outside surface of the casting, which resulted in a bottom that had a thick hardened surface with far greater wearability than competing plow bottoms.
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For the first couple of years, the tractors carried the Oliver-Hart-Parr designation, but the Hart-Parr essence soon disappeared, just as an entirely new line of purely Oliver tractors made their appearance.
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It was a sturdier industrial model named the Series B. They were powered with the same 3 cylinder Hercules GO-130 and DD-130 engines of the mid-series models. The OC-4 product line was discontinued in 1965.
625:, although very few were sold. However, in the 1950s, Oliver was an industry leader through their promotion of diesel power. Oliver led the industry in the sale of diesel tractors for several years.
326:. It was here that he met Charles H. Parr, and the two young men quickly became friends. Together they worked on their Special Honours Thesis and from that thesis they built three working
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into the Midwest, there was a need for a new plow that would be able to scour in the soils of the Midwest. To allow a cast iron bottom to scour in sticky soil, various methods of
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gun mounts for the Army. The Cleveland, Ohio plant built the MG-1 crawler for the Army as well as tank parts. The Gilroy, California plant produced the 76 mm guns for the
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Little by little, the Hart-Parrs began to gather defenders. Some of the first tractors delivered were gaining a reputation of usefulness that far surpassed that of the steamers.
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262:. This chilled area forms the exterior of the plowpoint. This metal cools more quickly than the metal which forms the other portion of the plowshare, and effectively becomes
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160:. The Superior Drill Company name lived on for many years following the merger that created Oliver, in the "Oliver Superior" line of seeding drills and related equipment.
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In 1944 Oliver acquired the Cleveland Tractor Company (Cletrac). They continued production of the existing Cletrac HG model until 1951, and based on the experience with
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465:. Following the acquisition of the Nichols and Shepard Company by the Oliver company. This corn picker became the direct ancestor of the famous Oliver cornpicker.
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Oliver also produced larger crawlers: the OC-6 from 1953 to 1960; the OC-9 from 1959 to 1965; the OC-12 from 1954 to 1961; and the OC-15 and the large OC-18.
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FIAT tractors were marketed under the Oliver name in the mid 1970s, such as the Oliver 1465 tractor. Oliver tractors with FIAT gages were available in 1970.
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tractor was rated at 30 belts and 17 draw horsepower. The single example of the Hart-Parr No. 1 operated around Clear Lake until 1916 when it was scrapped.
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111:. By uniting their various and somewhat diverse product lines into a single company, Oliver Farm Equipment immediately became a full-line manufacturer.
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W.H. Williams, Sales Manager in 1907, decided the words "traction engine" were vague and too long to be used in press releases, so he coined the word "
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Meikle, Douglas Laing, "James Oliver and the Oliver Chilled Plow Works." unpublished thesis, June 1958. To learn more about the Oliver company visit
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Later Hart-Parrs were denoted with a two-number name, where the first number stood for horsepower at the draw bar and the pully, respectively.
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United States Patent Office, Letters Patent No. 17694, "Improvement in Chilling Plowshares," June 30, 1857, to James Oliver and Harvey Little.
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was an American farm equipment manufacturer from the 20th century. It was formed as a result of a 1929 merger of four companies: the
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tractors of the 1948 to 1954 period, marked an entirely new series of Fleetline models. The 77 and 88 could be bought with either
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In 1948, Oliver was ready with an entirely new line of tractors. These were built over the successes of the past, including the
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512:. Founded in 1885, the Ann Arbor Agricultural Machine Company became the leading manufacturer of "hay presses" or stationary
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922:. Personal Papers collection housed in the Archives of the Center for History, South Bend, Indiana: n/a. Archived from
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136:, corn planters and other "seeding machines." The leading corporate component among the seven merged companies was the
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or diesel engines. During 1954, the company upgraded these tractors with the new "Super" series models, and added the
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The American Seeding Machine Company was organized in 1903 from the a merger of seven different manufacturers of
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Oliver in 1908, the company had again changed names to the Oliver Chilled Plow Works, and their factory site in
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An artist's conception drawing of an aerial view of the Oliver Chilled Plow Works, South Bend, Indiana, c.1900.
437:. In the blacksmith shop, John Nichols began making various farm tools for local farmers. He built his first
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Sulky Plow (ca. 1870) by Oliver Chilled Plow works at the German Agricultural Museum, Hohenheim near Stuttgart
1126:"System and Sales in the Heartland: a Manufacturing and Marketing History of the HartParr Company, 1901-1929"
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equipment). Farquhar produced some steam engines early then moved onto the production of traction engines.
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casting process also overcame this problem. Consequently, on June 30, 1857, James Oliver obtained his first
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In 1943, the Oliver Farm Equipment Company purchased the Ann Arbor Agricultural Machine Company of
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Plaque for the Hart-Parr model 3 from the American Society of Mechanical Engineers (ASME).
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Classic Oliver Tractors: History, Models, Variations & Specifications 1855-1976
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In 1952 the A.B. Farquhar Company was sold to the Oliver Corporation. Founded in
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The Tractor Builders: The People Behind the Production of Hart-Parr/Oliver/White
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In 1960, the new four-digit tractor models appeared. Among them were the 1600,
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The entrance to the Oliver Chilled Plow Works in South Bend, Indiana, c. 1880.
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now ready to do business, and had an authorized capitalization of $ 100,000.
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30:"Oliver Corporation" redirects here. For the typewriter manufacturer, see
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tank. The Shelbyville, Ohio plant built 155 mm Howitzer gun parts.
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crawlers, and power units incorporated into products by other companies.
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In 1956 Oliver announced the slightly larger OC-4 with a four-cylinder
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1196:""The 1923 Hart-Parr Franchise Is Now Ready" [advertisement]"
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Hart Par No. 2 was a prototype machine with only one being built.
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Encyclopedia of Cleveland History | Case Western Reserve University
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537:, in the 1850s as W.W. Dingee & Co, in 1861 young businessman
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1166:""What does it cost to plow an acre?" [advertisement]"
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planting and potato harvesting equipment. Acquisition of the
916:"The Story of James Oliver and The Oliver Chilled Plow Works"
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in the eastern states of the United States since the time of
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and mill machinery. The first thresher/separator of small
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Hart-Parr 30-60 "Old Reliable" at the Floyd County Museum.
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Hart-Parr 20-40 "Steel King" at the Floyd County Museum.
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Encyclopedia of American Farm Implements & Antiques
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More information about Oliver Tractors can be found in
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Three Oliver-built crawler-type tractors on display at
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Former American farm equipment manufacturer (1929ā1960)
648:. It was the company's first compact utility tractor.
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Pictures of Hart-Parr No 1 at the Floyd County Museum.
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Iowa State College of Agriculture and Mechanical Arts
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Vehicle manufacturing companies established in 1924
318:in 1872. At the age of twenty, he transferred from
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43:1937-1948 era Oliver Model 80 agricultural tractor
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179:started the Oliver Chilled Plow Works in 1853 In
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483:purchased the McKenzie Manufacturing Company of
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742:models. In 1969 White Motor Corporation formed
94:, purchased the Oliver Farm Equipment Company.
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1033:"Locomotive Firemen's Magazine, Vol 23, No 1"
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1136:(4). State Historical Society of Iowa: 368.
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128:"Oliver Superior" grain and fertilizer drill
1170:Journal of the American Bankers Association
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717:Further mergers, acquisitions, and branding
590:All crawler production was halted in 1965.
1777:Tractor manufacturers of the United States
1772:Agriculture companies of the United States
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1064:Pripps, Robert N; Morland, Andrew (1994).
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761:brand. AGCO was formed in 1990 by former
679:Oliver also built airplane fuselages for
968:Oliver Chilled Plow Works online history
651:In 1958, Oliver began marketing the new
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504:Ann Arbor Agricultural Machine Company
330:right there on the campus at Madison.
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843:. Osceola: Motorbooks International.
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219:and various other portions of the
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621:The latter was even built with a
291:Hart-Parr Gasoline Engine Company
886:. Iola WI: Krause Publications.
120:American Seeding Machine Company
53:American Seeding Machine Company
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429:In 1848, John Nichols opened a
324:University of WisconsināMadison
1387:Oliver Hart-Parr 18-36 Model H
1382:Oliver Hart-Parr 12-24 Model E
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478:McKenzie Manufacturing Company
307:Hart-Parr 30-60 "Old Reliable"
199:had been successfully used by
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1767:Oliver Farm Equipment Company
1200:Tractor and Gas Engine Review
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49:Oliver Farm Equipment Company
1325:, Motorbooks International,
1312:, Motorbooks International,
1070:. Motorbooks International.
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1282:Culbertson, John D (2001).
986:"Labor Riots in Progress".
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419:Nichols and Shepard Company
328:internal combustion engines
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1375:Oliver Hart-Parrr tractors
880:Wendel, Charles H (1997).
837:Wendel, Charles H (1993).
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1288:. Sunrise Hill Associates
1031:Putnam, E H (July 1897).
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671:Non-agricultural products
211:. However, in the sticky
164:Oliver Chilled Plow Works
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86:On November 1, 1960, the
69:Hart-Parr Tractor Company
61:Oliver Chilled Plow Works
32:Oliver Typewriter Company
1394:Oliver Hart-Parr Model A
1310:Oliver Tractor Data Book
1143:10.17077/0003-4827.10210
1124:Finlay, Mark R. (1998).
973:August 25, 2009, at the
776:Oliver Heritage Magazine
723:Cockshutt Farm Equipment
667:, and other new models.
914:Davis, H. Gail (1908).
706:White Motor Corporation
88:White Motor Corporation
1416:Oliver Hart-Parr 18-28
1411:Oliver Hart-Parr 18-27
1406:Oliver Hart-Parr 28-50
1399:Oliver Hart-Parr 28-44
1103:americanhistory.si.edu
1099:"Hart-Parr #3 Tractor"
939:Cite journal requires
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571:modified it to run on
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539:Arthur Briggs Farquhar
435:Battle Creek, Michigan
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158:Bickford & Huffman
146:P. P. Mast and Company
138:Superior Drill Company
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81:Battle Creek, Michigan
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1655:White Oliver tractors
1018:Chicago Daily Tribune
1003:Chicago Daily Tribune
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569:M2 high-speed tractor
558:
529:A.B. Farquhar Company
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183:where he worked in a
171:
150:Hoosier Drill Company
127:
42:
1020:. February 20, 1885.
744:White Farm Equipment
721:White also acquired
485:La Crosse, Wisconsin
154:Empire Drill Company
1787:South Bend, Indiana
1423:Oliver Hart-Parr 70
1016:"Industrial News".
1005:. January 14, 1885.
990:. January 14, 1885.
926:on August 25, 2009.
726:tags to Cockshutt.
602:Oliver 1550 tractor
546:Product development
510:Ann Arbor, Michigan
425:Nichols and Shepard
312:Charles Walter Hart
299:Hart-Parr nameplate
280:South Bend, Indiana
225:Allegheny Mountains
77:Nichols and Shepard
65:South Bend, Indiana
1206:: 13. October 1922
757:Today White is an
728:Minneapolis-Moline
701:Oliver Corporation
604:
565:
535:York, Pennsylvania
469:Later acquisitions
397:
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316:Charles City, Iowa
309:
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181:Mishawaka, Indiana
174:
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73:Charles City, Iowa
45:
18:Oliver Corporation
1749:
1748:
1331:978-0-7603-3199-6
1318:978-0-7603-1083-0
1176:: 569. March 1920
561:Antique Powerland
498:Chicago, Illinois
459:Buffalo, New York
152:(est. 1857), the
142:Springfield, Ohio
57:Richmond, Indiana
16:(Redirected from
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493:McKenzie Company
209:Thomas Jefferson
189:South Bend, Ind.
115:Merged companies
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1226:"CLETRAC, INC"
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1290:. Retrieved
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1178:. Retrieved
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1036:. Retrieved
1026:
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987:
981:
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932:cite journal
924:the original
919:
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681:Boeing RB-47
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314:was born at
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238:sand casting
217:North Dakota
195:bottoms and
177:James Oliver
175:
134:grain drills
131:
109:obsolescence
105:
101:
85:
48:
46:
36:
1292:December 7,
1264:January 27,
1236:January 27,
1210:January 19,
1180:January 19,
1083:December 7,
899:December 7,
856:December 7,
788:Oliver OC-9
763:Deutz-Allis
563:, in Oregon
463:corn picker
191:Plows with
79:Company of
1756:Categories
1463:Oliver 500
1109:January 3,
794:References
766:division.
618:tractors.
431:blacksmith
197:moldboards
1544:Oliver 90
1512:Oliver 80
1490:Oliver 70
1468:Oliver 60
1152:0003-4827
630:Oliver 66
608:Oliver 60
449:(largely
322:, to the
260:quenching
193:cast iron
1554:Super 99
1527:Super 88
1500:Super 77
1478:Super 66
1451:Super 55
1369:tractors
971:Archived
782:See also
642:gasoline
594:Tractors
581:Hercules
551:Crawlers
439:thresher
433:shop in
285:pig iron
233:hardened
205:planters
520:Cletrac
413:Tractor
404:15-22.
287:alone.
221:Midwest
201:farmers
185:foundry
1367:Oliver
1329:
1316:
1150:
1074:
890:
847:
770:Legacy
614:, and
514:balers
489:potato
447:grains
255:patent
156:, and
98:Merger
75:; and
451:wheat
213:soils
1741:2655
1736:2455
1731:2255
1726:2155
1721:2055
1716:1955
1711:1865
1706:1855
1701:1755
1696:1655
1691:1555
1686:1465
1679:1365
1674:1355
1667:1265
1662:1255
1644:2150
1639:2050
1634:1950
1629:1850
1624:1750
1617:1650
1612:1600
1607:1550
1602:1450
1597:1250
1576:1900
1537:1800
1327:ISBN
1314:ISBN
1294:2018
1266:2022
1238:2022
1212:2016
1182:2016
1148:ISSN
1111:2024
1085:2018
1072:ISBN
1040:2020
945:help
901:2018
888:ISBN
858:2018
845:ISBN
759:AGCO
740:1900
738:and
736:1800
636:and
628:The
455:oats
453:and
203:and
47:The
1592:600
1569:995
1564:990
1559:950
1532:880
1505:770
1483:660
1456:550
1444:440
1138:doi
708:of
665:990
661:880
657:770
653:660
215:of
140:of
90:of
71:of
63:of
55:of
1758::
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1042:.
947:)
943:(
920:1
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860:.
34:.
20:)
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