(Unterbrechungs-Vorrichtung)
Description: This is a device which allows multiple records made
on a kymograph drum to be lined up precisely under each other.
The apparatus consists of two parts, a series of two contact
breakers which are apparently attached to the shaft at the
center of the kymograph drum. The separation of the two contact
breakers is measured against a protractor and can be adjusted
with a screw. The second part of the unit holds two sets of
electrical contacts which control the point at which an
electrical stimulus is applied to a muscle preparation. This unit
is to be attached to a Baltzar-style kymograph (No. 210). The
kymograph rotates at a steady rate, so precise timing of the
switch closure is accomplished by the position of the contacts.
(Expanded caption Copyright 1998, Edward J. Haupt)
(Source: None given.)
Source of illustration: Zimmermann, E. (1903). XVIII. Preis-
Liste über psychologische und physiologische Apparate
(p. 42). Leipzig: Eduard Zimmermann.
DESCRIPTORS:
Type: component, switching
Stimulus: N/A
System: vision?
Output: N/A