Load application mechanism of Rockwell hardness tester

Details Load application mechanism of Rockwell hardness tester Load application mechanism of Rockwell hardness tester

1974-12-12

1976-04-13

Gill, James J.

Measuring and testing

Hardness

By penetrator or indentor

G01N 344

Patent

active

039496007

ABSTRACT:
A Rockwell hardness tester having a load application mechanism having a load transfer unit divided into an upper transfer member and a lower transfer member having bores through which an indenter shaft of the tester extends axially with some play. The transfer members are disposed coaxially and have a pair of balls therebetween horizontally arranged in a direction perpendicular to a knife edge on an upper end of the upper transfer member supporting a load application lever. The load transfer unit rests on a spring support cylinder with an initial load spring circumferentially thereof and having its lower convolutions resting on the expanded portion of the indenter shaft and the load applied to the tester is accordingly never applied eccentrically to the indenter shaft.

REFERENCES:
patent: 1516208 (1924-11-01), Rockwell
patent: 2813420 (1957-11-01), Miller

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