Geometrical instruments – Indicator of direction of force traversing natural media – Vehicle running gear – or headlight – inclination
Patent
1977-07-11
1979-06-12
Martin, Jr., William D.
Geometrical instruments
Indicator of direction of force traversing natural media
Vehicle running gear, or headlight, inclination
3320315, 3320318, G01B 13195
Patent
active
041576187
ABSTRACT:
Axial extensions connected to the stationary hubs of the steerable wheels of a vehicle, each of which axial extensions angularly mounts a vertical member adjustable to be in the same plane as the turning axis of its corresponding steerable wheel, and supports a pendular pointer and cooperating scale for directly indicating the camber and caster angles of its corresponding steerable wheel. Stationary parallel brackets are anchored outside and adjacent each wheel of the vehicle for mounting adjustable slide blocks for supporting gauge plates and toe-in gauges, which blocks are adjustable to be directly vertically below the axes of the wheels. The gauge plates cooperate with plumb bobs from the axial extensions and are used for setting the vertical members on their axial extensions to be in the same plane with the turning axes of the steerable wheels.
The toe-in gauges each comprise a pair of beams which are angularly adjustable about parallel vertical axes and are linked together through a pointer lever for directly indicating toe-in angles.
A mounting board may be provided for the pieces of apparatus attached to the stationary brackets and wheel hubs, with separate marked pieces for the right and left sides of the vehicle.
The method of this invention comprises setting the vertical members clamped to the stationary part of the hub of each steerable wheel in the same plane as the turning axis for that wheel when the weight is off that wheel, and then gauging the camber and caster from the pendular means and cooperating scale mounted on the vertical members after the wheel is again normally loaded or weighted. The toe-in angles of the steerable wheels are gauged relative to the direction of the non-steerable wheels when the steerable wheels are put in their straight ahead or forward position by the manual steering wheel therefor controlled by the operator of the vehicle.
REFERENCES:
patent: 2000865 (1935-05-01), Seger et al.
patent: 2079070 (1937-05-01), Johnston
patent: 2160226 (1939-05-01), Phillips
patent: 2562142 (1951-07-01), Frazee
patent: 2581630 (1952-01-01), Carrigan
patent: 2781587 (1957-02-01), Haucke
Davis Wheel Aligning System, Inc.
Kirk Hugh Adam
Martin, Jr. William D.
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