Resonating device for use, e.g. in mechanical beaters, comprising principal mass and springs also contains supplementary mass and coupler for connecting it to principal mass to modify harmonic frequency of device

摘要

The resonating device comprising a principal mass (1) and springs (3). The novel feature is that it also contains a supplementary mass(10) and a coupling device (204) for connecting it to the principal mass to modify the harmonic frequency of the device.