Tensioning device has two circular blocks with millings built into bearing, and also built into bearing is one longish inner block with corresponding holes and millings, two steel springs, and four rollers in guide frame

摘要

The tensioning device has two circular blocks with millings built into a bearing. Also built into the bearing is one longish inner block with corresponding holes and millings, two steel springs of the required size and strength, four rollers in a guide frame, two roller guide pins, two circular block retaining pins, and two spring guide pins.