| 摘要 |
A temperature recorder in the form of a tubular cover and with an inside piston, in which an altered position of the piston is carried out by a mechanical movement released from a bimetal washer, which, when making a sudden change, changes its form from convex to concave when a determined temperature level is reached. Two line-formed screen patterns, a picture formed by coloured lines on the inner surface of the tubular cover, shows a certain pattern in the original position, and a different pattern is shown when an inside piston has been moved vertically inside the outer tubular cover. Friction between the outside of the piston and the inner surface of the tubular cover forms a braking means. A reset button can by means of a magnet or a spring repulse or press back the piston which is in the top of the tubular cover and has a magnet and the piston will be pressed back within the tubular cover to its original position and the first patterns will be shown clearly again by the line-formed screen pattern. The bimetal washer will assume its original form and is prepared to start again when the temperature is increased or decreased.
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