SU79687A1 - Thermograph - Google Patents

Description

The subject matter of the invention is a thermograph for measuring body temperature and automatically applying temperature values in the form of a thermogram to a photographic film, exposing the latter through the light slots of the thermograph chamber and through a thermometer placed in front of one of them.

The thermograph has the form of a flat chamber attached to the body using an elastic band.

FIG. 1 and 2 shows the device of the thermograph, which consists of four main parts: the fixing device, tape tape. of whom is the mechanism, the instrument case thermometer.

The fixing device is used for recording on the film 6 (Fig. 1) a thermogram and grid, the horizontal lines of which reflect the temperature, and the vertical time of the thermogram recording. The device is an illuminating chamber S divided by a partition into two halves. In each compartment of the chamber there is one incandescent lamp.

Graduation of horizontal lines on Lenka and the application of a thermogram on them occurs in the first section “amers.

The graduation is performed by passing light from the bulb 4 through the narrow horizontal slits of the glass plate 3 (Fig. 2). Thermogram recording is achieved by illuminating the slit of the spiral thermometer /, whose height depends on the mercury column level of the thermometer, which varies with the degree of heating.

Application (vertical lines reflecting the timeline of one hour, is made in the second compartment of the camera, by illuminating the film through the vertical slit of the glass plate 2.

The motion of the photographic film is carried out by a tape-drawing machine (the mechanism CONSTITUTING from the clock mechanism and the device; for automatically switching on and off the electric lamps. The coil 7 on which the film 6 is wound is mounted on the axis of the gear wheel. The second end of the film is wound on the coil 8.

The monitoring of the operation time of the instrument is carried out by the indications of the arrow 11 on the dial of the instrument. The rotation is transmitted from the gears of the clock mechanism to the needle by means of a screw 9 and a screwdriver.

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gear 10, sitting on the same shaft with an arrow //.

The start and stop of the clock (the mechanism is made by the r 14 of the machine.

Periodic switching on of the lamps is carried out by the contact system. consisting of two-contact rollers 12 and brushes of contact pads 13.

The electrical then from the battery or the galvanic cell enters the lamp terminals through contact rollers connected to the clock mechanism and closing the current circuit at the required moments with the help of contact rings and brushes.

The mercury thermometer tank has the form of a flat spiral, slightly protruding above the surface of the back wall of the device for better resistance with the body.

A thermometer capill is moving away from. the center of the reservoir inside the chamber, where it is bent at a right angle upwards, coming into contact with the film.

In order to avoid lateral exposure of the film and to obtain a clear image of the thermogram of the capillary, it is made of a black glass plate with a central lumen along the capillary.

Subject invention

Thermograph with photo recording fixtures for mercury thermometer readings on photographic film moved using a clockwork Mechanism and located in an opaque case with a slot in which a thermometer capillary is placed, partly made of black glass, characterized in that. In order to automatically apply calibration lines on the film by briefly illuminating the film through narrow slits. The device is equipped with two illuminating chambers, in the wall of one of which there is a slot for marking the thermometer capillary and next to the latter is an opaque glass plate with narrow horizontal graduations, and the other wall has the same glass plate with one narrow vertical slit, the lighting lamps being switched on automatically at certain intervals by means of a contact device, actuated by the same clock mechanism, by means of which Moving film.

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FIG. one

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