Abstract: A baby chair height adjusting mechanism which is capable of accurately adjusting the height of a baby chair, and which includes a chair main body two pairs of leg rods respectively mounted to the two side portions of the lower surface of the chair main body such that they can be adjusted in height, each pair including a front leg rod and a rear leg rod, and two height adjusting mechanisms each rotatably mounted on the upper end portion of the front leg rod, each of the height adjusting mechanisms includes a lift lever capable of being lifted and lowered and a lock lever having a lower end portion capable of being advanced and retreated.

Abstract: A cover over the screw shaft in a roller-type fingerpressure apparatus prevents clogging and is also provided with flanges to help guide the moving roller frame. The vertical extension of the rollers is enhanced by having the roller shafts vertically slidable in grooves formed in plates which are themselves vertically slidable with respect to the frame.