Abstract: The disclosure herein describes a lighting device which is adapted for use with a wheel bicycle and which includes a magnet mounted to one of the wheels and a housing mounted to the bicycle frame. A solenoid inside the housing has a winding and a core closely mounted to the wheel. A lamp is electrically connected to the solenoid winding so that light is emitted as a result of the magnet passing by the solenoid core as the bicycle wheel rotates. The electrical system includes storage elements which accumulate an excess of electrical energy during wheel rotation to thereby allow light to be emitted after the bicycle has come to a stationary position and until the excess has been used up.

Abstract: An instrument to indicate disalignment of a bicycle wheel or the like spoked wheel and characterized by a single feeler or guide engaging both the inner side and a lateral side of the rim, thus avoiding the need to remove the tire and connected to an indicating needle which indicates both the lateral and the circumferential disalignments in a convenient manner. This instrument includes a casing having a viewing window; the needle is pivotable in two orthogonal directions relative to the viewing window, and the latter is divided into four quadrant zones by lines extending parallel to the two orthogonal directions, and each quadrant zone is distinctive of one of the four modes to adjust the spokes of a wheel; tighten the left spoke, tighten the right spoke; release the left spoke; and release the right spoke.