French
DeutschFile:Martinson Tractor.gif
Size of this preview: 800 × 277 pixels. Other resolutions: 320 × 111 pixels | 940 × 325 pixels.
Original file (940 × 325 pixels, file size: 222 KB, MIME type: image/gif, looped, 25 frames, 3.0 s)
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Summary
| Description | English: Animation showing a simplified "walking" mechanism, according to the 1926 Martinson patent, of a walking dragline. Side view on the left, front view on the right. The boom and dragline, which would extend out to the left, has been omitted. The orange axle, which is fixed relative to the body of the dragline, turns an eccentric green cam. The green cam's motion is constrained by the red leg and a purple pin which is free to move vertically in a slot on the leg. The orange axle is placed along the body of the dragline away from the center of gravity, towards the boom side of the dragline, so the body will tilt when it is raised. |
| Date | |
| Source | Own work, from US Patent 1627984 "Traction Machine." (granted 10 May 1927 to inventor Martinson, Oscar J. and assigned to Monighan Machine Co.) and (October 1947). "Paradise for Sidewalk Superintendents". Popular Mechanics 88 (4): 153-157; 240; 244. |
| Author | Mliu92 |
| Other versions | This file was derived from: Martinson Tractor (vector source).svg: .gif){kind=small} |
.svg){kind=small}
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:31, 26 July 2016 | | 940 × 325 (222 KB) | Mliu92 | Introduce slight delay for start and end frames. |
| 19:12, 26 July 2016 |  | 940 × 325 (222 KB) | Mliu92 | User created page with UploadWizard |
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