SU25302A1 - A device for the automatic movement of the scales of the brassmoscope - Google Patents

Description

It is proposed in the brasmoscope, described in patent No. 14529, to fix the working mobile scale of the readings of the brasmoscope directly on the float in the smaller knee of the mercury manometer, and to make the larger knee of the manometer movable and expanded at the top in order to simplify use of the device.

In FIG. 1. depicts the front view of the device with the cover removed; FIG. 2 is a vertical longitudinal section along the line CD of FIG. one; FIG. 3 is a cross section of the device along the line AB of FIG. one; FIG. 4 - front view of the device with the cap on.

On one board there is a thermometer 1 (Fig. 1), the scale of which 2 has divisions from 55-100 and vacuum meter 3, showing, due to the corresponding volume change in the right knee, the vacuum on rock 4 with divisions uneven in length, set against divisions scales 2, so that they correspond horizontally to the boiling point of water at given degrees of depression. In this way, for any vacuum in the vacuum apparatus, the level of mercury in the left knee of the vacuum meter will simultaneously show both the vacuum on rock 4 and the temperature on the scale 2, corresponding to boiling water at this vacuum and if the vacuum gauge

when water really boiled, then the ends of the mercury column of the thermometer and vacuum meter were always on the same level.

But when the fluid in the vacuum gauge is more or less thick, the mercury level of the thermometer will always be higher than the mercury level of the vacuum gauge, the difference between these levels will be the greater the thicker the boiling liquid.

This difference in the mercury levels of the thermometer and vacuum gauge is an increase in the boiling point, which is measured by the end of the mercury column of the thermometer on the floating paper cylinder 5, floating on it over the mercury in the left knee of the vacuum gauge, with divisions on it. In order to find out the indications of the brassmoscope, it is necessary against the mercury level of the thermometer to read the division or mark on the cylinder 5.

To correct the errors of the vacuum gauge 3 caused by the change in atmospheric pressure, it is necessary to move the bar 6, on which the right knee of the vacuum gauge 3 is attached to the left flexible tube, so that the pointer 7 comes just opposite the scale mark 8 corresponding to the brassmoscope reading.

The board together with the described parts is covered with a tin lid with a glazed window through which the thermometer is visible, the right knee of the vacuum gauge

the rocks. The rim of thermometer 10 (Fig. 2) and lamb for moving the bar 6 are fastened on the back wall of the brasmoscope. Glass trap 9 (Fig. 1) is inseparably linked with the brassmoscope, for example, to protect the vacuum gauge from entering it. water resulting from condensation of the vapor in the tube connecting the vacuum gauge to the vacuum apparatus and so on.

The subject matter of the invention.

Claims (3)

1. Modification of the device for automatic movement of the brassmoscope scale according to patent No. 14529, characterized in that instead of using to move the transfer scales with the unit and eccentrics, the working mobile scale 5 is fixed directly on the float lowered into the smaller knee of the mercury manometer 3. 2. In the device according to claim 1, use in the upper part of the large knee of the pressure gauge 3 an appropriate expansion of the pressure gauge tube, with the aim of directly reading the actual depression of the pressure gauge of the brassmoscope. 3. In the device according to claim 1 and 2, use the rolling large knee of the pressure gauge to bring the scales to normal (O and 760 mm) readings.