Abstract: A method of making laminated insulated board comprising continuously removing fibrous sheets from supply rolls and subjecting the fibrous sheets to heat sufficient to raise the temperature of the sheets above the melting point of the foamed thermoplastic sheet to which the fibrous sheets are to be applied. A thermoplastic sheet is continuously removed from a roll and heated. The heated fibrous sheets are applied to the surfaces of the foamed thermoplastic sheet to form continuously moving assembly, and pressure is applied to said assembly sufficient to reduce the cross section of the assembly. Additional pressure is applied to the assembly at a point spaced longitudinally downstream from said first pressure area, and the portion of the assembly between the two pressure areas is subjected to longitudinal tension and the assembly is thereafter permitted to cool.

Abstract: A machine for removing excess filling material and refinishing the surface to a true sphere after one or more of the finger holes in a bowling ball have been filled in. The machine frame carries a motor-driven sanding disc and a pair of ways. Slidable on the ways is a carriage, which may be moved by means of a lead screw rotated by a hand wheel with a calibrated dial. The bowling ball to be refinished is supported rollably on a number of ball casters or the like which are mounted on the carriage. The ball may be rotated or rolled by hand about any axis, but is constrained against motion in translation except by translation of the carriage itself. In use, the carriage is advanced until the ball just touches tangentially the rotating sanding disc. The ball is then rolled manually to present its surface to the disc. The carriage may then be advanced 0.05 mm or so and the process repeated. Dust from the operation is collected in a novel housing by a combination of centrifugal and suction means.