| 摘要 |
Methods of and apparatus are provided for placing a cover lifter at a position at which a cover for a load-carrying vehicle (such as a standard gondola car) must be lifted to form a non-load-formed peak. A web is quickly installed, and need be installed only at the locations at which there is a valley in the load. The web is placed transversely across the car generally in the horizontal plane of the top of the car. The web supports the cover lifter which is initially (during placing of the cover over the web and the loaded car) flat and generally in the plane of the top of the car. After placing the web tightly on the car, and then securely tying the cover to the car over the web, the cover lifter is raised and causes the cover to stretch in a controlled manner and form a lifter-peak, which is a non-load-formed peak at just the location at which the load did not form such a load-formed peak, but did form a valley.
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