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    • "Putting gas in tractor."

    • "Putting gas in tractor."

    • Farm tractors

    • "Putting gas in tractor. An auto with 1954 plates is on the right side." Three men watch as another man pours the contents of a can into a funnel that is in the tractor engine. The men are shown from behind, and the tractor is shown in a side...
    • Larsen Tractor Museum Collection
    • Twin City tractor, belt test

    • Twin City tractor, belt test

    • Farm tractors--Testing; Minneapolis-Moline Company; Twin City tractors

    • "Doing a belt test on a Twin City tractor." The tractor is tested with a "Prony Brake" dynamometer, which is a friction based type and very unstable in maintaining a constant load. This test was probable set up for a demonstration, because the much...
    • Larsen Tractor Museum Collection
    • Farmall M overturned

    • Farmall M overturned

    • Accidents; Farm tractors; Farmall tractors; International Harvester Company

    • Backward Overturn of Farmall M with a mounted mower attached. Side view of Farmall M tractor tipped over with brush around it. This older model did not have Roll-Over protection. If the driver did not manage to jump of the tractor in time hae was...
    • Larsen Tractor Museum Collection
    • TTL Secretary Agnes Haag

    • TTL Secretary Agnes Haag

    • Tractors--Testing; Equipment; Personnel; Haag, Agnes

    • Agnes Haag, the laboratory's secretary, measuring the latest drawbar test tracing from the recorder. She is operating a planimeter. The planimeter is used for determining the Average Drawbar Pull on the test. The test trace is recorded on a paper...
    • Larsen Tractor Museum Collection
    • International 300 and Minimum Tillage Planter

    • International 300 and Minimum Tillage Planter

    • Farm tractors; International Harvester Company; Agricultural machinery & implements; Lane, Delbert E.

    • Red Lane (Extension) on an International 300 tractor operating a minimum tillage planter. The planter is rear-and-mid mounted. Red Lane was the Extension Engineer at the Department of Agricultural Engineering from the early 60-ies till the late...
    • Larsen Tractor Museum Collection
    • Hitching implement to tractor

    • Hitching implement to tractor

    • Agricultural machinery & implements; Farm tractors

    • "Farm worker hooking up implement to a John Deere tractor." This was always a dangerous operation for one person. The man's right hand is on the clutch lever. The tractor is in reveerse gear and by nudging the clutch lever he tries to bring the...
    • Larsen Tractor Museum Collection
    • Tractor turnover demonstration

    • Tractor turnover demonstration

    • Farm tractors; Accidents; Farm tractors--Safety measures; Allis-Chalmers tractors; Allis-Chalmers Manufacturing Company

    • An Allis-Chalmers WC was used in tractor overturn demonstrations to show how easy it was to tip over if the load was hitched too high (see chain on the left). Side view of the tractor with its front end off the ground at about a 45 degree angle. ...
    • Larsen Tractor Museum Collection
    • Test Track; Aerial view

    • Test Track; Aerial view

    • Test Track

    • Aerial view showing the new (1956) concrete tractor test track and the "Dirt Run-In track" in the center area of the track. This Run-in area enabled running and official drawbar test on the concrete and having a second tractor do run-ins on the...
    • Larsen Tractor Museum Collection
    • Caterpillar D4 Diesel

    • Caterpillar D4 Diesel

    • Tractors--Testing; Caterpillar Inc.; Crawler tractors

    • "Caterpillar D4 Diesel during belt test." Caterpillar D4 Diesel crawler inside the old tractor test lab with a belt running from the rear of the tractor to the dynamometer inside the control room
    • Larsen Tractor Museum Collection
    • Froelich tractor

    • Froelich tractor

    • Farm tractors; Tractor Power and Safety Day; John Deere tractors; Waterloo Gasoline Engine Co.

    • "1892. The "Old Froelich". The Granddaddy of Today's Farm Tractors. Forerunner of the Now Famous John Deere Line. It was shown at the Ag Engineering Tractor Safety Day in 1957." Side view of Froelich gasoline powered tractor on a flatbed.
    • Larsen Tractor Museum Collection
    • Caterpillar D-4

    • Caterpillar D-4

    • Tractors--Testing; Caterpillar Inc.; Crawler tractors

    • "D-4 Caterpillar being tested on the dirt track before 1956." Front view of Caterpillar D-4 crawler on the dirt test track towing the Adams test car and two load tractors.
    • Larsen Tractor Museum Collection
    • John Deere MT

    • John Deere MT

    • Farm tractors--Testing; John Deere tractors; Deere & Company

    • "John Deere MT during test #423 on September 1949." The Adams test car is hitched to the MT. A technician is standing at the back of the John Deere and reading data from a special scale on the test car.
    • Larsen Tractor Museum Collection
    • John Deere 70

    • John Deere 70

    • Farm tractors--Testing; Tractors--Testing; John Deere tractors; Deere & Company

    • John Deere 70 during the drawbar test. The tractor is towing the Adams test car and one Oliver 88 used as a load tractor.
    • Larsen Tractor Museum Collection

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