Abstract: A web winding and severing apparatus using a linear carriage arrangement wherein the cores are positioned relative to feed to a winding drum in a bilateral manner such that a core is always adjacent to the drum ready to receive the leading edge of the web. A pair of reciprocating carriages are mounted on a frame which supports a winding drum for rotation. The carriages movement relative to the drum is independent, yet coordinated such that as one carriage carries a filling winding core, the other stands ready on the opposite side of the winding drum with an empty core. As the web is severed the second carriage positions its core to become the winding core and the first carriage moves away to off-load the full core, then, returns to a ready position with a fresh core.

Abstract: A device for scraping the inside of pipes clogged with foreign materials is comprised of (1) a mandrel having a conical cam whose top is attached to a mechanical power source and around which is mounted (2) a plurality of annularly expandable scraper elements whose combined outside configuration approximates a tube which can be inserted into the pipe, and whose combined inside configuration approximates an expandable, conical dome into which the mandrel's conical cam is pulled in order to annularly expand the elements of the conical dome and hence expand the plurality of scraper elements as the entire device is pulled through the pipe and (3) means for limiting the annular expansion of the scraper elements.

Abstract: A method and apparatus for rewinding and severing a web delivered to a winding core and then transferring the leading end of the remaining web to an empty core while the winding core is being filled. The web to be rewound and severed is passed between a vacuum transfer roll and a knife roll prior to reaching the winding core with the vacuum transfer roll being spaced from the winding core while the web is delivered thereto until such winding core is almost filled. The vacuum transfer roll is moved toward engagement with the empty core and the knife roll is moved toward the vacuum transfer roll when the winding core is almost filled. The web is severed at a location spaced forwardly of the empty core as it passes between the vacuum transfer roll and the knife roll with the vacuum transfer roll being adjacent the empty core to force the leading end of the remaining web onto the empty core.