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  • All fields: Tractors--Testing
(188 results)



Display: 20

    • Larsen Tractor Museum, Records

    • Farm tractors--Testing
    • Title: "An early tractor test with a truck used as a load unit." An unidentifieds tractor on a dirt track towing the test car and a specially modified truck. Unfortunately there is no record of this type of load truck. Its towing resistance was...
    • Larsen Tractor Museum, Records

    • Farm tractors--Testing
    • Drawbar Test of Minneapolis Moline 12-25, Test # 13, 1920. The test car shown is the first one (the bathtub with a roof!) used. The interesting thing is the "fifth-wheel steer" system which must have made for difficult steering with the wide axle.
    • Larsen Tractor Museum, Records

    • Farm tractors--Testing; Case Corporation; Case tractors
    • From the photograph it is not clear which Case model this is, but it is one of a series tested track prepping runs used at that time to prepare the track surface for the Drawbar test.
    • Larsen Tractor Museum, Records

    • Farm tractors--Testing
    • Deawbar test of Allis Chalmers "U". They use truck as load unit. No information available on the truck. Side view of the tractortowing the second test car and the load truck. This test was performed at Hoffmann Estates in Illinois
    • Larsen Tractor Museum, Records

    • Tractors--Testing
    • "Dynamometer during a test. Carlton Zink, Chief Engineer from 1930 till 1942, is running the test. The dynamometer's generator is at front left and the load control board is on the right. Carlton is adjusting the load rheostat.
    • Larsen Tractor Museum, Records

    • Farm tractors--Testing
    • John Deere L drawbar test with the oldest NTTL test car and a load generating trailer. The two-wheeled load vehicle used a hydraulic pump and a valriable restriction to generate resistance on the trailer wheels. The resistance generated heat and...
    • Larsen Tractor Museum, Records

    • Farm tractors--Testing; Tractors--Testing; John Deere tractors; Deere & Company
    • Drawbar Test of John Deere L, Test#313, 1938. Tractor test on the dirt track. Th test car is the number 2 generation with the resistance trailer at the back. Apparently the Adams test car had a problem at the time.
    • Larsen Tractor Museum, Records

    • Deere & Company; John Deere tractors; Farm tractors--Testing
    • "Checking the time clock on a John Deere tractor." Every tractor on test was provided with a mechanical time clock which recorded a time log of operating and stopping times during the test, This recording was made by a pen on a pressure sensitive...
    • Larsen Tractor Museum, Records

    • Tractors--Testing --Inspection
    • Left to right: C.W. Smith, Carlton Zink, E.E. Brackett, Hurlbut, Jack Snitter and Merlin Hansen." Examination of a John Deere tractor, which is positioned vertically in order to better examine the engine which has a horizontal engine.
    • Larsen Tractor Museum, Records

    • Tractors--Testing; Allis-Chalmers Manufacturing Company; Allis-Chalmers tractors; Crawler tractors
    • "Harold Mizner, a test technician, measuring drive belt pulley speed. It might be Carlton Zink at the dynamometer." On the left of the image, the rear half of an Allis-Chalmers HD-14 Diesel crawler is visible. The belt extends from the tractor...
    • Larsen Tractor Museum, Records

    • Engine parts; Tractors--Testing
    • Two technicians inspecting a tractor engine and examining the cylinder and pistons. The man on the left wearing a tractor lab uniform may be Carlton Zink. He is holding a micrometer to measure cylinder bore.
    • Larsen Tractor Museum, Records

    • Crawler tractors; Tractors--Testing
    • Large crawler tractor (TD 24?) being testd on the dirt test track towing the Adams test car and five other tractors. The buildine on the left is the Agricultural Engineering building (L.W. Chase Hall today) and on the right is the Campus...
    • Nebraska Tractor Test Laboratory, Records

    • Tractors; Garden tractors; Tractors--Testing
    • An unidentified garden tractor on the drawbar test. This was an unofficial test with a proprietary report providd only to the manufacturer. A driver on the Oliver test car was necessary at all times during the Drawbar tests, because the tesat car...
    • Nebraska Tractor Test Laboratory, Records

    • Tractors; Tractors--Testing; John Deere tractors; Deere & Company; Rollover protective structures; Farm tractors--Safety measures
    • Side impact test on a ROPS on a John Deere tractor. The photograph shows the lateral deformation at the moment of impact. The amount of deformation is important because it is not allowed to intrude into a "Safety Zone" around the operator. The...

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