Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 5791559 | Temporary rail bridge The temporary rail bridge (20) of the illustrated embodiment includes a bridge number (20) that is coupled to a track rail (16) by screw clamps (24). Each of the screw clamps (24) includes an internal tensioning component such as a spring (58) that allows... | 08/11/1998 |
| 5009168 | Track expander and method of use A track expanding device is employed in a conveyorized transport system to spread apart adjacently disposed sections of track thereby tensioning an endless chain travelling with these track sections. The expanding device comprises a splice and an expander... | 04/23/1991 |
| 4378909 | Fish-plates for electrically conducting railway rails A fish-plate comprises two sections which can be fitted, by way of a toothed surface, against corresponding toothed surfaces of two adjacent electrically conductive rails of a railway using bolts to tighten the sections towards each other. The teeth exten... | 04/05/1983 |
