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1 - There are dozens of patents on this subject. We can go back to 1899 in U.S. patents where J. J. A. Morath, of Swiss origin, invented an 'Agricultural Machine, propelled by Archimedes screw. US635501 patent.
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2 - ' Screw Locomotive ' of C.E.S. Burch patented in 1901. Screws seem adjustable to provide steering. US669210 patent.
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3 - Ira Peavey, in 1907, patented a screw articulated vehicle in yaw : the 'Locomotive Snow' for timber industry. Driven by an internal combustion engine, it was ahead of his time in the first decade of the 20th century. Tested around Bangor, Maine, it worked well but presented nevertheless challenges on rough roads and could not compete with the 'Lombard Log Hauler' crawler. US864106 patent.
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4 - George Arthur Bloxam also filed a patent in England in 1914 for ‘Improvements on tractors’, agricultural. It is unfortunately not easy to search online older European patents. GB18674 patent.
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5 - Armstead Snow-Motor kit, Snow-Motor Co. Inc., Detroit, 1926, fitted on a Fordson Tractor, on which the tracks gave way to cylinders surrounded by a spiral shape. The advertisement claimed it could pull 20 tons of logs.
http://fountainheadauto.
blogspot.fr/2010/02/more-snow-motors.html
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6 - This copy of Snow-Motor, now at the Hays Antique Truck and Heidrick Antique Tractor Museums, Woodland, CA, was used by the U.S. Post between Truckee and North Lake Tahoe in the 20s. Orders came from Canada, Norway, Sweden, Alaska and was widely tested in Russia.
http://en.wikipedia.org/wiki/Screw-propelled_vehicle
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7 - We can see 'Armstead Snow-Motor’ used by Wilkes expedition in Nenana, Alaska in 1926. Today, the Museum of Valdez, Alaska, has a tractor of the expedition, but it is not sure, it could come from the Kennicott Mine, AK.
Geoffrey Pike, wilkes expedition inventor, thought he could build a vehicle propelled by screw on the model of Armstead Snow-Motor for moving armies in snow covered areas. From 1941, Lord Mountbatten, Chief of Combined Operations, planed to build this vehicle and Pike moved to Canada to oversee the project, which failed. However, it leads shortly after to the tracked M29 Weasel, more universal, built at 16000 units in the Studebaker factory in the USA during WWII.
http://vilda.alaska.edu/cdm/singleitem/
collection/cdmg2/id/3415/rec/1
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8 - The Motobob sleigh in Russia with skis at the front was built in 1927.
Pict from book of Alain Dupouy, Auto-éditeur : 'Les véhicules tout-terrain N° 13 Tome III'. 1995.
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9 - Johannes Raeder, a veteran of the Eastern Front in Germany, designed a prototype of screw-propelled vehicle in 1944, and tested it in Tyrol. Very slow, it could still pull 1 t and had good capabilities in the snowy slopes in which he sank 30 cm.
http://patentpending.
blogs.com/patent_pending_blog/automobile/
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10 - Emmitt Tucker Sr. designed many prototype vehicles for snow that led to the creation in the late 30's of his company later internationally renowned : Tucker Sno-Cat Corporation, Medford, Ore., which produced in the beginning half-tracks vehicles with front skis. He tried many prototypes propelled by screws from the early 20 (photo) until about 1935 without success. Finally, E. Tucker, like his contemporaries J. A. Bombardier and later Bruce Nodwell in Canada and other researchers choose in the mid-30s for caterpillars. Those of Tucker rolled on 2 articulated pontoons very distinctive of the brand and then 4 pontoons from the late '40s.
Tucker Sno-Cat Corporation, Oregon, produces 5 vehicles per fortnight with about 35 people, and still belongs to Tucker family. Pict from 'Mechanics Illustrated', Jan 1957.
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