| 摘要 |
It is constituted by a metal rod 1 fitted at one end with a dust removing head 2 and at the other end with a metal spherical pivot 3 whose centre of gravity has been, with respect to the geometrical centre of the sphere, lowered and offset in the direction opposite to that in which the dust removing head is fitted. The metal support 4 of the spherical pivot is connected via a conducting wire 5 to the base of the record player. The spherical pivot 3, constituted by a spherical segment, gives the dust removing arm, which is placed on a horizontal plane, stable equilibrium and very high mobility. No device solidly attaches it to the record player. <IMAGE>
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