Recorders – Record receivers and/or driving means therefor – Web
Patent
1974-12-16
1976-06-01
Hix, L. T.
Recorders
Record receivers and/or driving means therefor
Web
346139R, 226 95, 226195, G01D 1530, B65H 1728
Patent
active
039613356
ABSTRACT:
A graphic recorder for use in recording information on a strip chart. The recorder includes a housing having a pair of rollers mounted at opposite ends of an opening across which the strip chart moves. Radially outwardly extending pins are mounted at opposite ends of each of the rollers for registering with and engaging positioning holes formed along the edges of the strip chart. Drive apparatus is provided for reversibly turning the rollers conjointly to move the strip chart along an X-axis. Apparatus is provided for creating a partial vacuum in a chamber within the housing so as to tension the portion of the strip chart suspended between the rollers along a curved path for properly positioning the chart with respect to the pins on the rollers. A recording head is mounted on the cover of the housing for movement along a Y-axis for marking the strip chart. When the cover is opened air is admitted into the housing for reducing the vacuum so that tension on the suspended portion of the strip chart is relieved to facilitate removal and replacement of the strip chart.
REFERENCES:
patent: 3188645 (1965-06-01), Trumpy et al.
patent: 3289908 (1966-12-01), Engle
patent: 3305873 (1967-02-01), Mourier
patent: 3355166 (1967-11-01), Plumb
patent: 3392930 (1968-07-01), Goldfarb
patent: 3460158 (1969-08-01), Bravenec
patent: 3468606 (1969-09-01), Wolf et al.
patent: 3499614 (1970-03-01), Badum
patent: 3653068 (1972-03-01), Gordon
patent: 3673604 (1972-06-01), Gordon
patent: 3681779 (1972-08-01), Darnell
patent: 3883060 (1975-05-01), Scarpa
Hix L. T,.
Witkowski Stanley J.
Zeta Research Inc.
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