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"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 5142783 | Method of correcting gear tooth system errors A method of correcting tooth system errors in a gear pairing in which one of the gears is mounted on a component to be driven. The mounted gear is first non-positively supported on the shaft of the component to be driven with a relatively small clearance ... | 09/01/1992 |
| 4054999 | Adjusting process for bearings A shaft is confined within a housing by two indirectly mounted tapered roller bearings, and these bearings are adjusted by applying opposed axial forces to their cups, the spacing between which is dependent on the thickness of a deformable spacer located ... | 10/25/1977 |
