| 摘要 |
<p>In the example showing a view from below, FIG. 2 and a transverse section AA, FIG. 3 the baseboard 1, fitted with four projecting squares 2 on the top to which the wheels of a perambulator are attached, is fixed to a metal frame 4 mounted so that it can slide, on two pairs of bearings 5, with horizontal axes and two pairs of bearings 6 with vertical axes, on the two parallel sides of the U-section of the base 7 on which is fixed the geared electric motor 10 which, by means of the crank 9 and the connecting rod 8, drives the sliding frame 4 imparting alternating linear motion to the baseboard 1. On one vertical wall of the said baseboard 1 are mounted the switch 11 for the geared electric motor 10 and the loudspeaker 12 for playing the music cassette. <IMAGE></p> |
