Adjusting mechanism

Details Adjusting mechanism Adjusting mechanism

1979-03-08

1980-11-25

Smith, Alfred E.

Radiant energy

Coded record and readers; invisible radiant energy type

250278, G01N 2320, G21K 100, G21K 700

Patent

active

042360722

ABSTRACT:
A mechanism is provided for varying the distance between a detector and a measuring crystal in an X-ray spectrometer. The crystal is arranged on a rotatable shaft and the detector is arranged on an arm which can perform a circular movement about the crystal shaft. The crystal shaft and the detector arm are coupled so that a rotation of the crystal shaft through an angle .theta. is accompanied by a rotation of the detector arm through an angle 2.theta.. A first pulley having a radius r is mounted on the crystal shaft and a second disc having a radius 2r is rotatably mounted on the crystal shaft. A belt or cord is guided over each one of two guide rollers. One end of each of these belts is permanently connected to the first pulley, while its other end is permanently connected to the second pulley.

REFERENCES:
patent: 3566111 (1971-02-01), Harm

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