MEANS FOR OSCILLATING ONE OF A PAIR OR RELATIVELY ROTATABLE MEMBERS
One of the members has a track raised thereon which is equipped with arcuate surfaces on opposite sides thereof, that are concentric with the rotational axis of the members, and joined to one another at the corresponding ends thereof. The other member extends transversely of the track between the af...
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Zusammenfassung: | One of the members has a track raised thereon which is equipped with arcuate surfaces on opposite sides thereof, that are concentric with the rotational axis of the members, and joined to one another at the corresponding ends thereof. The other member extends transversely of the track between the aforesaid opposite sides thereof, and has a wheel rotatably carried threreon, the rotational axis of which is parallel to the axis of the members but transversely shiftable in relation thereto. The wheel is yieldably biased into engagement with the surface of the track, on each side thereof, and the members are rotated in relation to one another by driving the wheel in one rotational direction thereof, so as to cause either the wheel or the track to undergo rotation about the axis of the members, there being yieldable biasing means for retaining the wheel in engagement with the track as it crosses the junctures between the surfaces at their ends. |
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