Fig. 4. Our newest HF ballistocardiograph, shown tilted, and in the horizontal position in which it is usually employed. A, The table. Neither the S-cm. suspension nor the strong restraining spring is shown. The table is made of 24 st aluminum, and with the footplate and bracing weighs 24 kilograms. B, The footplate. C. Movable crossoiece and DiDes L I which attack it to ‘footplate, used ‘to support the shoulder yoke. D, Main table frame of cold rolled steel, weighing 110 kilograms. E, Base frame of cold rolled steel, also weighing 110 kilograms. F, The lifting mechanism, which weighs about 90 kilograms. Between base frame and floor are 4 pads of corrugated rubber and 2 of cork, each about 7 by 7 cm. and 7 mm. thick.
...read more