Weighing scales – Self-positioning – Spring
Patent
1989-10-10
1990-10-23
Miller, Jr., George H.
Weighing scales
Self-positioning
Spring
177165, G01G 302, G01G 2314
Patent
active
049644793
ABSTRACT:
A hollow housing with openings at opposite ends has progressive indications of weight at progressive positions along an opening in the housing. A threaded shank of a bolt extends longitudinally into the housing through the opening at the first end. A spring disposed in the housing is attached at one end to the bolt shank and at the other end to a rod which extends through the second end of the housing. A coupling member is attached to the rod to hold an article to be weighed. A retaining nut is disposed within the housing at the first longitudinal end of the housing to receive the bolt shank. A packing member retained by the nut is partially tapped to receive the bolt shank. By only partially tapping the packing member, the bolt is retained in fixed position relative to the nut. The bolt is changed from this fixed position only by applying a rotary force to the bolt to compensate for tare. A nut is disposed on the shank of the bolt externally of the housing. A ring is disposed on the shank of the bolt between the head of the bolt and the nut. The housing is rotatable relative to the ring to dispose the scale in front of the viewer without affecting the longitudinal disposition of the shank of the bolt in the housing.
REFERENCES:
patent: 67482 (1867-08-01), Barker
patent: 629290 (1899-07-01), Goodbaudy
Miller Jr. George H.
Roston Ellsworth R.
Schwartz Charles H.
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