Cartridge force and bias adjustment gage
AssigneeRCA Corporation
InventorsByron K. Taylor, Gerald D. Pyles
Life of this patent
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Abstract
An apparatus for aiding in the final orientation of a video disc stylus assembly within the stylus cartridge. A fixture is arranged for receiving and securing cartridge assemblies in precise spatial relation to successive assemblies. A cantilever secured in fixed spatial relation to the cartridge has its free distal end arranged to engage the stylus assembly, which engagement produces deflections in the cantilever relative to the position of the stylus assembly with respect to the cartridge. Electro-mechanical transducers, coupled to the cantilever, measure and indicate minute deflections therein. The stylus position is then altered manually or by controlled mechanical means in accordance with the measured deflection in the cantilevers.
Claims10
An apparatus for determining the positional relationship of a stylus arm assembly with respect to a cartridge in which the assembly is mounted, said apparatus comprising:
- a fixture means for receiving and holding the cartridge in a predetermined fixed position;
- a cantilever member having a first end arranged to receive the stylus arm when the cartridge is placed in said fixture, a second end of said cantilever member being secured to said fixture so that the longitudinal axes of the stylus arm and the cantilever member are generally parallel;
- transducer means coupled to the cantilever member to measure the deflection of the cantilevered member created by the stylus arm;
- and
- means connected to the transducer means to exhibit the deflection.
Apparatus for use in setting the position of the stylus arm assembly within a video disc stylus cartridge, said cartridge including a signal pickup stylus attached to a first end of the stylus arm, the second end thereof being compliantly coupled to the cartridge, and having a leaf spring flylead attached at a first end thereof to the first end of the stylus arm, the second end of the flylead being attached to the cartridge by a rotatable member for adjusting the direction at which the second end of the flylead engages the cartridge and thereby influencing the relative position of the stylus arm, said apparatus comprising:
- a rigid fixture for securing the cartridge in a fixed relation therewith;
- a cantilever having its longitudinal axis arranged generally parallel with the longitudinal axis of the stylus arm and secured at a first end thereof to said rigid fixture, the second end of the cantilever having a generally "V" shaped configuration arranged to engage the stylus arm proximate the signal pickup stylus when a cartridge is secured to the fixture;
- transducer means cooperating with the cantilever to measure deflection of said cantilever to thereby indicate the position of the stylus arm relative to a nominal standard.
Dependencies are inferred from the claim text.