Adjustable support for spring board - has wheel mounted on transversal axle supported by skates that fit over longitudinal rails

摘要

The support for a spring board (1) allows its period of oscillation to be adjusted and has a transversal axle (4) on which it rests and which can be adjusted by a wheel (8). The axle is supported on two fixed longitudinal rails (11,12) on either side and below it by two skates (9,10), made of auto-lubricating material. The lower part of each skate is shaped to fit over one rail, round an angle of more than 180 degrees. The top of each skate has an opening in which the axle fits and which acts as a bearing for it.