| 摘要 |
A vessel mounted for travel on a wheeled axle is adapted to feed hot liquid asphalt through a manifold to an application zone of a roof. The manifold rides on skids which fix its orientation with respect to horizontal. Special devices are mounted to follow the manifold across the application zone to first spread the liquid asphalt across the zone and to then gather and meter the spread asphalt leaving a predetermined quantity per unit area on the roof surface.
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