improvements to a device in order to allow for the extraction and insertion, below the flat core of a table, a pianetto of elongation in one piece

摘要

the concerns of the refinements found in a device in order to allow for the extraction and insertion, below the flat core of a table.a pianetto of elongation in a single piece.to make it more simple and rapid, the construction of the device is changed to a telaietto articulate space tape ring, which is made in one piece, without welds.the media of telaietto articles are now applied on a crossbar midway of the dumpster.it was also moved the drum flow of pianetto lengthening, to eliminate welding of its pivot to an auction of telaietto.the roller is supported by a stirrup, which is applied to the screws on the side of the intermediate container.