抄録
On account of the vibration record in the till-ing state of power tiller, we made up the “Vib-ration Testing Table”. The table is fixed rigid and its driving power was absorbed by the fo-llower wheel into the mechanical elements which were unconcerned to the vibration, so that the vibration must have been picked up at the almo-st identical state with the running and tilling condition. The electric measuring apparatus were consisted of (1) pick-up gauge with two plates which the capacitance was variable accor-ding to the vibration, (2) Transducer, (3) Lower frequency amplifier, (4) Constant voltage source, (5) Kathode ray osciliiograph, (6) Continuous re-cording camera. The special feature of this elec-tric apparatus was to record the vibrations sim-ultaneuosly in the different two directions. From those results, the singularities were detected in accordance with the differences of the driving methods.
