DE383126C - Pipette with a flat aerometer that can be freely moved up and down - Google Patents

Pipette with a flat aerometer that can be freely moved up and down

Info

Publication number
DE383126C
DE383126C DEW60055D DEW0060055D DE383126C DE 383126 C DE383126 C DE 383126C DE W60055 D DEW60055 D DE W60055D DE W0060055 D DEW0060055 D DE W0060055D DE 383126 C DE383126 C DE 383126C
Authority
DE
Germany
Prior art keywords
pipette
flat
hydrometer
housing
aerometer
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
DEW60055D
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.)
LUDWIG WILBERZ
Original Assignee
LUDWIG WILBERZ
Publication date
Priority to DEW60055D priority Critical patent/DE383126C/en
Application granted granted Critical
Publication of DE383126C publication Critical patent/DE383126C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/10—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing bodies wholly or partially immersed in fluid materials
    • G01N9/12—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing bodies wholly or partially immersed in fluid materials by observing the depth of immersion of the bodies, e.g. hydrometers
    • G01N9/14—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing bodies wholly or partially immersed in fluid materials by observing the depth of immersion of the bodies, e.g. hydrometers the body being built into a container

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Devices For Use In Laboratory Experiments (AREA)

Description

Pipette mit frei nach oben und unten beweglichem, flachem Aräometer. Die vorliegende Erfindung bezieht sich auf die an sich bekannten Pipetten mit eingeschlossenem, frei nach oben und unten beweglicheni, flachem Aräometer. Diese Pipetten weisen den Übelstand auf, daß ein sicheres und schnelles Ablesen des Aräometers nahezu unmöglich ist, weil sich letzteres infolge des Einsaugens der zu messenden Flüssigkeiten in die Pipette in dauernder lebhafter Bewegung befindet.Pipette with a flat hydrometer that can be freely moved up and down. The present invention relates to the per se known pipettes with enclosed, Flat hydrometer, freely movable up and down. These pipettes show the disadvantage that a reliable and quick reading of the hydrometer is almost is impossible because the latter is due to the sucking in of the liquids to be measured is in constant vigorous movement in the pipette.

Diesem Übelstand wird durch die vorliegende Erfindung abgeholfen, und -zwar dadurch, (laß die Drehung des Aräometers in der Pipette durch deren eigenartige Ausbildung bzw. durch paarweise in der Pipette angeordnete Querstäbchen oder durch die bekannten, am Aräometer oder an der Pipette vorgesehene Führungsrippen, Warzen o. dgl. verhindert ist.This disadvantage is remedied by the present invention, and, indeed, (let the rotation of the hydrometer in the pipette be caused by its peculiar Training or by means of cross rods arranged in pairs in the pipette or by the known guide ribs, warts, provided on the hydrometer or on the pipette o. The like. Is prevented.

In der Zeichnung ist eine Pipette nach der-Erfindung t,eispielsweise in zwei Ausführungsformen dargestellt.In the drawing is a pipette according to the invention t, for example shown in two embodiments.

Abb. i zeigt eine Pipette rnit einem flache Form aufweisenden Gehäuse in einem senkrechten Schnitt und Abb. 2 in einem zweiten senkrechten, um 9o° versetzten Schnitt.Fig. 1 shows a pipette with a flat housing in a vertical section and Fig. 2 in a second vertical, offset by 90 ° Cut.

Abb. 3 und 4. zeigen eine Pipette mit rundem Gehäuse in zwei um cgo° gegeneinander versetzten senkrechten Schnitten.Fig. 3 and 4. show a pipette with a round housing in two cgo ° mutually offset vertical cuts.

Bei der Ausführungsform der Pipette nach den Abb. i und 2 ist das Gehäuse i flach gehalten. In diesem ist (las ebenfalls flach gehaltene Aräometer 4. auf und nieder beweglich. Eine Drehung dieses ist durch die flache Form verhindert. Um dein Aräometer 4 die erforderliche freie Bewegung in dem Gehäuse i zu sichern, sind auf der Innenwand des Gehäuses i an zwei einander gegenüberliegenden Stellen die beiden Führungsrippen 7 angebracht, durch die die Skala .I jederzeit frei in dem Gehäuse i gehalten wird.In the embodiment of the pipette according to Figs. I and 2, this is the case Housing i kept flat. In this one is (read also flat hydrometers 4. Movable up and down. Rotation is prevented by the flat shape. To ensure that your hydrometer 4 has the necessary free movement in the housing i, are on the inner wall of the housing i at two opposite points the two guide ribs 7 attached, through which the scale .I at any time freely in the housing i is held.

Die beiden. Führungsrippen 7 können auch durch entsprechende Einbuchtungen des Gehäuses i oder durch an diesem nach innen vorspringende Warzen o.dgl. ersetzt «-erden. Auch können die Führungsrippen, Warzen o. dgl. auf der Außenfläche des Aräoineters angebracht werden.The two. Guide ribs 7 can also be formed by corresponding indentations of the housing i or by protruding inwards on this or the like. replaced "-earth. The guide ribs, warts o. The like. On the outer surface of the Aräoineters are attached.

Bei der Ausführungsform nach den Abb. 3 und :I sind in dein runden Glasgehäuse i der Pipette die paarweise angeordneten Stäbchen 2 und 3 angebracht. Zwischen diesen Stäbchen 2 und 3 ist das Aräometer .4 in flacher Form derart gelagert, daß es sich auf und nieder bewegen kann, aber gegen eine Drehung gesichert ist. Auf dem Hals 5 des Gehäuses i ist der Gummiball 6 angebracht, der in bekannter Weise dazu dient, die Flüssigkeit, die einer Messung unterworfen werden soll, in das Gehäuse i hochzusaugen.In the embodiment according to Fig. 3 and: I are in your round In the glass housing of the pipette, the rods 2 and 3 arranged in pairs are attached. Between these rods 2 and 3 the hydrometer .4 is mounted in a flat shape in such a way that that it can move up and down, but is secured against rotation. On the neck 5 of the housing i, the rubber ball 6 is attached, which in a known manner serves to bring the liquid to be subjected to a measurement into the housing i suck up.

Claims (1)

PATENTANSPRUCH: Pipette mit in dieser frei nach oben und unten beweglichem, flachem Aräometer, dadurch gekennzeichnet, daß die Drehung des Aräometers innerhalb der Pipette durch paarweise in dieser angeordnete O_uerstäbchen oder durch die bekannten am Aräometer oder an der Pipette vorgesehenen Führungsrippen, Warzen o. dgl verhindert ist. PATENT CLAIM: A pipette with a flat hydrometer which can be moved freely up and down, characterized in that the rotation of the hydrometer inside the pipette is effected by O_uerstäbchen arranged in pairs in the pipette or by the known guide ribs, warts or the like provided on the hydrometer or the pipette is prevented.
DEW60055D Pipette with a flat aerometer that can be freely moved up and down Expired DE383126C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEW60055D DE383126C (en) Pipette with a flat aerometer that can be freely moved up and down

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW60055D DE383126C (en) Pipette with a flat aerometer that can be freely moved up and down

Publications (1)

Publication Number Publication Date
DE383126C true DE383126C (en) 1923-10-10

Family

ID=7605909

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW60055D Expired DE383126C (en) Pipette with a flat aerometer that can be freely moved up and down

Country Status (1)

Country Link
DE (1) DE383126C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008027971B4 (en) * 2008-06-12 2013-07-04 Hans-Jürgen Ulonska Method and device for determining the particle size distribution in mineral fine soils and mineral fine sediments

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008027971B4 (en) * 2008-06-12 2013-07-04 Hans-Jürgen Ulonska Method and device for determining the particle size distribution in mineral fine soils and mineral fine sediments

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