Recorders – Plural-function recorder – distinguishable recordings – Plural markers and single record receiver
Patent
1978-02-13
1980-04-29
Hartary, Joseph W.
Recorders
Plural-function recorder, distinguishable recordings
Plural markers and single record receiver
346 66, 346 72, 346139D, G01D 930
Patent
active
042008760
ABSTRACT:
A water level recorder for use with pressure-sensitive chart paper and having a framework with a lead screw rotatably mounted in the framework. A pulley is secured to the lead screw. The pulley is driven by a tape which is positioned by a float that is adapted to rest upon the surface of the water. A lead screw nut is mounted on the lead screw for movement longitudinally of the lead screw as the lead screw is rotated. A marking member for marking the chart paper is carried by the lead screw nut. A drum is secured to the lead screw for rotation with the lead screw. A helix for marking the chart paper is formed on the drum. Chart paper drive means is provided for advancing the chart paper over the helix and the marking member. Platen assemblies movable into and out of engagement with the chart paper are adapted to engage the chart paper to retain it in engagement with the marking member and the helix so that two traces are formed on the chart paper as the chart paper is advanced, one by the marking member and one by the helix to give coarse and vernier indications respectively of the water level being measured.
REFERENCES:
patent: 2516217 (1950-07-01), Keinath
patent: 2522240 (1950-09-01), Sias
patent: 2587079 (1952-02-01), Woods
patent: 2622001 (1952-12-01), Cooley
patent: 3309710 (1967-03-01), Smoot
patent: 3512166 (1970-05-01), Gray
Gearheart John D.
Jenkinson Frederic W.
Hartary Joseph W.
Systron-Donner Corporation
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