Spiral spring compressing unit comprises end plates on connecting rods, one end of spring being attached to pressure plate, while other is attached to mounting with centering pin whose angle can be adjusted to that of last winding on spring

摘要

The spiral spring compressing unit comprises two triangular end plates (2, 3) mounted on connecting rods. One end of the spring (75) is attached to a pressure plate (16) attached to a drive (11) on one plate, while the other end is attached to a fixed mounting (50) on the other plate. This has a centering pin (55) whose angle can be adjusted to the angle of the last winding (60) on the spring.