| http://www.w3.org/ns/prov#value | - switch means for controlling the direction of rotation 01' the motor means, a lever operably connected to said first bellows, said second bellows having one and operably' connected to said lever and the other end connected to said switch means so as to suspend said second bellows between said lever and switch means in such a manner as to efiect control or said motor means in accordance with the ca
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