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Apparatus for locating the level of liquid in a vessel
| Details |
Inventors: Boudin, Daniel; Godat, Jean; Krzywdziak, Alain; Parmenon, Daniel;
Assignee: Fonderie et Ateliers des Sablons (Orleans, FR)
Primary Examiner: Goldstein; Herbert
Assistant Examiner: Roskos; Joseph W.
Attorney, Agent or Firm: Scully, Scott, Murphy & Presser
An apparatus is provided for locating the level of liquids for particular use in volumetric dosage techniques. A probe is mounted upon a vertical column which slides axially in a slide fixed in the housing of the apparatus. Adjacent to the slide is a threaded rod rotatably mounted in the housing and a releasable nut which is integral with the vertical column and the threaded rod. The releasable nut permits engagement and disengagement of the vertical column and threaded rod. A drive mechanism connected to the vertical column is employed to control a potentiometer as a function of the position of the vertical column. |
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DETAILED DESCRIPTION In the application of the apparatus of the present invention to the volumetric dosage of parts of liquids, the segment of variable length is determined by the distance which separates the tip of the probe and the bottom of the dosage vessel.
Therefore, to carry out a dosage with the help of a device for dividing into equal parts a segment of variable length of the type previously mentioned, first the length of the segment to be divided is displayed, that is, the total desired height of liquid to be prepared, for example, 130 mm per 1000 divisions of the counter or 195 mm per 1,500 divisions, with the same amplification.
In moving the probe from the bottom of the dosage vessel to the total height of liquid to be prepared, the display will indicate the successive fractions, from 0 to 1000 (and even beyond, in case of supplementary thousandths to be added).
The invention has more particularly for its purpose, to provide a level locating device of great accuracy and easy to operate so that it can be used by workers unfamiliar with dosage techniques, for example, by automobile body workers.
To achieve this purpose, the locating device according to the invention comprises: a probe bearing at its lower end a level detector and which is mounted with the possibility of height adjustment upon a support element integral with a vertical column sliding axially in a slide fixed in the body of the device; a vertical threaded rod rotatably mounted in said body near said column and capable of being driven in rotation by means of a manually controlled drive device; a releasable nut axially integral with said column and which, by the action of a control device, can take two postions namely: an engaged position in which the threads of the nut work together with the threading of the threaded rod so as to obtain an axial movement of the column at the time of the threaded rod's rotation, a disengaged position in which the threads of the nut are moved away from the threading of the threaded rod, this disengaged position allowing a free sliding action of the column in its slide; and, a drice device providing the control of a potentiometer according to the position of said column
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