| 摘要 |
A tarpaulin is held by one edge along one side of the truck body and is rolled on a longitudinally extending roller assembly so that when the roller assembly is rotated, the tarpaulin rolls across the top of the truck box transversely. Spring loaded check cables extend from the ends of the roller and are fastened to the truck body on the other side of the truck body to control the roller and tarpaulin as the roller is being rotated to cover and uncover the top of the box.
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