Abstract: A reset device (7) for the digit rollers (3) of a counter has a positioning spring (22) developed integrally on a shift drive bridge (9), the positioning spring being adapted to engage by means of a detent projection (21) into detent recesses (17-20) of the side surfaces (13-16) of a position setter (12). In this way, the position setter (12) passes in particularly reliable manner into each of its four possible positions.

Abstract: Geared drive for reset trip odometer in which a transfer tooth on each of the rotatable odometer wheels is immediately ahead of the tooth space in the circular track on the wheels for tracking the wide teeth of the associated transfer pinion gear and laterally clear of the narrow pinion teeth. With the wide teeth normally riding on the track of the wheel, there is a gear locking action if a reverse drive occurs to limit wheel droop from a reference line and anti-locking action when reset is attempted so that the wheels can be forwardly driven to record trip distances.

Abstract: A disk on a wheel-tpe odometer assembly is provided with a integral spring pawl that operates with the normally provided transfer teeth on the highest number wheel to effect a positive detent that prevents this last wheel from backward droop.

Abstract: An antireverse rotation means which includes a resilient arm provided on and protruding from a side face of a pinion holder and an engagement portion formed on a side face of a digit wheel at a position corresponding to an end of said resilient arm. The resilient arm slides and rides over the engageable portion on the digit wheel without causing noise during positive rotation of the digit wheel; however, during the reverse rotation, the resilient arm engages with the engageable portion blocks reverse rotation of the digit wheel.

Abstract: A hubodometer having a wide range of selectable gear ratios so that the same basic structure can be used to indicate distance traveled by wheels of greatly different wheel diameters in either miles or kilometers. The hubodometer has an elongated bore extending through a frame and centered on the axis of rotation of the hubodometer. An odometer helical drive gear and shaft is mounted on the frame transversely to the axis of rotation and removed from the bore in the frame. In assembly of the hubodometer, if a first gear ratio is desired, a support shaft carrying a gear is located within the bore and is fixed to rotate with the casing on its axis of rotation. This gear engages the odometer helical drive gear at a first locus so that the odometer reading is responsive to the rotation of the casing with a first gear ratio. If a second gear ratio is desired, a support shaft having no gear is located within the bore and is fixed to rotate with the hubodometer casing.