Recorders – Combined with external recorder operating means – Well logging
Patent
1988-09-28
1990-05-15
Miller, Jr., George H.
Recorders
Combined with external recorder operating means
Well logging
346145, 346136, G01D 900
Patent
active
049261924
ABSTRACT:
A strip chart recorder has a chart dispenser, a platen, a writing table, and a chart advancing mechanism mounted in its base and a temperature-sensitive transducer having a bimetal coil mounted in its cover. The transducer is attached to a stylus that is mounted in the cover and marks the chart when the cover is closed as the chart that is being advanced across the platen. The cover includes a window and a lid for closing the window. The window is disposed over the writing table for enabling that portion of the chart that has been advanced over the writing table to be written upon after the cover has been closed. The cover is shaped for preventing access to the transducer and the marking means when the cover is closed with the window open. A detachable form is attached to the cover over the writing table and disposed in position for preventing closure of the lid prior to detachment of the form from the cover. The chart dispenser includes a chart chamber having a wall including an opening through which a tightly rolled chart may be inserted laterally. The chamber is dimensioned to enable the diameter of the rolled chart to expand to such extent that the inserted chart cannot be laterally removed from the chart chamber through the wall opening. Operation of the chart advancing mechanism is inhibited when it is sensed that there is no chart in the chart dispenser. The chassis is shaped to permit easy insertion and removal of a battery. A gear train of the chart advancing mechanism is mounted on a platform having a tab to facilitate assembly by insertion in a slot in the base. The cover defines a slot for receiving a tab on the bimetal coil of the transducer and a recess for axially receiving the coil and an attachment frame to facilitate assembly and permit precalibration of the bimetal coil.
REFERENCES:
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patent: 3140144 (1961-11-01), Koch et al.
patent: 3221321 (1962-05-01), Hashimoto
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patent: 4044362 (1977-08-01), Greenhut
patent: 4135400 (1979-01-01), Maxwell et al.
patent: 4222061 (1980-09-01), Stires, III
Bastyr Charles A.
Stires, III John C.
Callan Edward W.
Miller Jr. George H.
Stires, III John C.
Tran Huan
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