Add to ORKGCorbitt G-50 tractor during the belt test in old lab. Front view of Corbitt tractor. An RPM Counter dial is on a table in front of the tractor. A thermometer measures air temperature. A cable or hose is running from the tractor
"Checking drawbar data for test 366. M. Hansen (John Deere representative). C.L. Zink (Nebraska Trac...
Lester Larsen at dynamometer and Al Brhel in the background at the tractor during belt test
Engineer working with John Carlile's treadmill dynamometer inside the test lab. The tractor being te...
Cockshutt 40 tractor during belt test, test 442. The tractor is inside the tractor test lab, and the...
Caterpillar D4 diesel during belt test. Caterpillar D4 diesel crawler inside the old tractor test la...
"Test no. 403. Massey-Harris 22RT." Belt test of Massey-Harris tractor is shown at the tractor's rea...
Official belt test no. 373 of the John Deere LA in 1941 The John Deere is driving the dynamometer wh...
1948. Belt test no. 402. Centaur KV 48. with G. Olson, W. McPhail, Billy Bryan. Centaur KV-48 in the...
Massey-Harris 44K during belt test 427. Side view of tractor inside test lab. A Massey-Harris engine...
"Test no. 401. Massey-Harris Pony. R. Valentine, H. Hartz, E. Dahl (factory representative), H. Mizn...
Oliver HG during belt power test. Front three-quarter view of Oliver HG crawler tractor inside the t...
A belt power test on a John Deere tractor. The location of the test is unknown. The two people exami...
View of equipment inside the old tractor test laboratory. Lab technician working with a small 40 HP ...
Checking the time clock on a John Deere tractor. Every tractor on test was provided with a mechanica...
John Deere ready for Drawbar test. The New Caterpilar-made Test car and tractor are parked inside th...
"Checking drawbar data for test 366. M. Hansen (John Deere representative). C.L. Zink (Nebraska Trac...
Lester Larsen at dynamometer and Al Brhel in the background at the tractor during belt test
Engineer working with John Carlile's treadmill dynamometer inside the test lab. The tractor being te...
Cockshutt 40 tractor during belt test, test 442. The tractor is inside the tractor test lab, and the...
Caterpillar D4 diesel during belt test. Caterpillar D4 diesel crawler inside the old tractor test la...
"Test no. 403. Massey-Harris 22RT." Belt test of Massey-Harris tractor is shown at the tractor's rea...
Official belt test no. 373 of the John Deere LA in 1941 The John Deere is driving the dynamometer wh...
1948. Belt test no. 402. Centaur KV 48. with G. Olson, W. McPhail, Billy Bryan. Centaur KV-48 in the...
Massey-Harris 44K during belt test 427. Side view of tractor inside test lab. A Massey-Harris engine...
"Test no. 401. Massey-Harris Pony. R. Valentine, H. Hartz, E. Dahl (factory representative), H. Mizn...
Oliver HG during belt power test. Front three-quarter view of Oliver HG crawler tractor inside the t...
A belt power test on a John Deere tractor. The location of the test is unknown. The two people exami...
View of equipment inside the old tractor test laboratory. Lab technician working with a small 40 HP ...
Checking the time clock on a John Deere tractor. Every tractor on test was provided with a mechanica...
John Deere ready for Drawbar test. The New Caterpilar-made Test car and tractor are parked inside th...
"Checking drawbar data for test 366. M. Hansen (John Deere representative). C.L. Zink (Nebraska Trac...
Lester Larsen at dynamometer and Al Brhel in the background at the tractor during belt test
Engineer working with John Carlile's treadmill dynamometer inside the test lab. The tractor being te...