Thermograph with removable cartridge

Claim 1

A thermograph including in combination; an instrument supporting a thermometer means with a stylus positioned in response to temperature and normally pressed into engagement against a removable strip chart, drive means for said strip chart, said instrument adapted to be pre set and loaded with said removable strip chart for time-temperature recording and having means exposing the chart to be written upon and having means for manipulated control by a shipper and receiver respectively and having an on condition for transporting the chart when engaged by the stylus and having an off condition, and logic means having an actuator shiftable from an on position to an off position for off conditioning the drive means and lifting the stylus from the chart and having a frictionally positionable start lever shifting the actuator into the on condition of the drive means and having a releasable stop lever shifting the actuator into the off condition of the drive means, a liner of depressible low density material having walls of substantial thickness protectively embracing the instrument and having separate access openings to the exposed chart and start lever and to the removable strip chart and stop lever respectively, and a box permanently enveloping the liner when the combination is prepared for use and having separate reclosable doors coextensive with the aforesaid separate access openings in the liner for independent use by the shipper and receiver to write upon the chart and start the instrument and to stop the instrument and remove the chart respectively.