DE357254C - Capillary tube for thermometer - Google Patents

Capillary tube for thermometer

Info

Publication number
DE357254C
DE357254C DEU7514D DEU0007514D DE357254C DE 357254 C DE357254 C DE 357254C DE U7514 D DEU7514 D DE U7514D DE U0007514 D DEU0007514 D DE U0007514D DE 357254 C DE357254 C DE 357254C
Authority
DE
Germany
Prior art keywords
thread
capillary tube
thermometer
magnifying glass
notch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEU7514D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WILHELM UEBE GmbH
Original Assignee
WILHELM UEBE GmbH
Publication date
Priority to DEU7514D priority Critical patent/DE357254C/en
Application granted granted Critical
Publication of DE357254C publication Critical patent/DE357254C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02Means for indicating or recording specially adapted for thermometers
    • G01K1/04Scales
    • G01K1/06Arrangements for facilitating reading, e.g. illumination, magnifying glass
    • G01K1/065Arrangements for facilitating reading, e.g. illumination, magnifying glass of liquid column thermometers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lenses (AREA)

Description

Kapillarrohr für Thermometer. Durch die prismatische Umrißform des Kapillarrohrs läßt sich eine mehrfache Wiederholung des Fadenbildes beim Vorbeistreichen vor dem Auge hervorbringen. Ist eine Unterbrechung der einzelnen Fadenbilder nicht gewünscht, dann kann durch entsprechende Wahl der Umrißform eine Aneinanderreihung mehrerer Fadenbüder erreicht werden.Capillary tube for thermometer. The prismatic outline of the Capillary tube can be a multiple repetition of the thread pattern when sweeping past bring out before the eye. There is no interruption of the individual thread images desired, a stringing together can then be made by appropriate choice of the outline shape several Fadenbüder can be achieved.

Vorliegende Erfindung sieht zu diesem Zweck den Querschnitt des Kapillarrohrs vor dem Quecksilberfaden ein- oder mehrmals durch Einkerbungen in Richtung auf den Faden ein. Dadurch entstehen vor ihm mehrere lupenförmige Wandungen des Kapillarrohrs, die je für sich wirkend, das Fadenbild zu einem breiten Band auseinanderziehen. Die durch die Einkerbung bewirkte benachbarte Lage der Linsengestaltung hat einen unmittelbaren Anschluß des einen Fadenbildes an das andere zur Folge, so daß dadurch eine doppelte Verbreiterung des Fadenbildes dem Auge dargeboten wird. Dadurch wird das Ablesen des Thermorneterstandes erheblich erleichtert.For this purpose, the present invention provides the cross section of the capillary tube in front of the mercury thread once or several times through notches in the direction of the Thread one. This creates several magnifying glass-shaped walls of the capillary tube in front of him, each acting on its own, pulling the thread pattern apart into a wide band. The adjacent position of the lens design caused by the notch has a immediate connection of one thread pattern to the other result, so that thereby a double broadening of the thread image is presented to the eye. This will the reading of the thermometer reading is made much easier.

Die Zeichnung stellt zwei Ausführungsbeispiele der Erfindung in vergrößertem Querschnitt dar. Bei dem Beispiel nach Abb. i ist nur eine Einkerbung f des Kapillarrohrs b vorgesehen, die sich gerade gegenüber dem Quecksilberfadene befindet. DieseEinkerbungf wird von den beiden Lupenleisten g eingeschlossen, die je für sich die Verbreiterung des Fadenbildes hervorrufen und ihre beiden Fadenbilder in der Stellung, in der sich das Auge gerade vor dem Quecksilberfaden befindet, zu einem breiten Fadenbild vereinigen. - Das Beispiel nach Abb. 2 zeigt eine im wesentlichen ähnliche Querschnittsform, nur daß noch seitliche Einkerbungen f getroffen sind, die ebenfalls von benachbarten Lupenleisten g gebildet sind. In diesem Fall würden drei breite Fadenbilder entstehen, und zwar das eine ebenso wie im vorhergehenden Beispiel in unmittelbarer Aufsicht auf den Faden o und dazu zwei seitliche, symmetrisch liegende.The drawing shows two exemplary embodiments of the invention in an enlarged cross-section. In the example according to FIG. I, only one notch f in the capillary tube b is provided, which is just opposite the mercury thread. This notch f is enclosed by the two magnifying glass strips g , which each cause the widening of the thread image and combine their two thread images in the position in which the eye is just in front of the mercury thread to form a broad thread image. - The example according to Fig. 2 shows an essentially similar cross-sectional shape, only that lateral notches f are made, which are also formed by adjacent magnifying glass strips g . In this case, three broad thread images would arise, namely one, as in the previous example, in a direct view of the thread o and, in addition, two lateral, symmetrical ones.

Claims (1)

PATENT-ANspp,ucii: Kapillarrohr mit lupenförmiger Einkerbung für Thermometer, dadurch gekennzeichnet, daß durch eine in der Sehrichtung fallende Einkerbung (f) mehrere zum Quecksüberfaden (e) symmetrisch liegende Lupenleisten (g) gebildet werden.PATENT-ANspp, ucii: Capillary tube with magnifying glass-shaped notch for thermometers, characterized in that a notch (f) falling in the direction of vision creates a plurality of magnifying glass strips (g) which are symmetrical to the mercury thread (e).
DEU7514D Capillary tube for thermometer Expired DE357254C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEU7514D DE357254C (en) Capillary tube for thermometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEU7514D DE357254C (en) Capillary tube for thermometer

Publications (1)

Publication Number Publication Date
DE357254C true DE357254C (en) 1922-08-19

Family

ID=7565982

Family Applications (1)

Application Number Title Priority Date Filing Date
DEU7514D Expired DE357254C (en) Capillary tube for thermometer

Country Status (1)

Country Link
DE (1) DE357254C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2535628A (en) * 1946-06-08 1950-12-26 Fairchild Charles Owen Thermometer tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2535628A (en) * 1946-06-08 1950-12-26 Fairchild Charles Owen Thermometer tube

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