| 摘要 |
A machine for building bands composed of successive layers of rubberized tire building material. The machine has a number of arcuately spaced supports which are held in spaced relation from a centrally disposed elongated shaft by a plurality of expansible and retractable spokes. A relatively thin metallic shell with a pair of overlapped ends, is disposed in surrounding relation around the supports and provides a working surface on which the generally cylindrical bands are formed. A rubber sleeve is placed around the shell to maintain it in supported relation against the supports. The diameter and circumference of the shell are varied by expanding and retracting the spokes in unison. |
