US1762807A - Blood pipette - Google Patents
Blood pipette Download PDFInfo
- Publication number
- US1762807A US1762807A US313594A US31359428A US1762807A US 1762807 A US1762807 A US 1762807A US 313594 A US313594 A US 313594A US 31359428 A US31359428 A US 31359428A US 1762807 A US1762807 A US 1762807A
- Authority
- US
- United States
- Prior art keywords
- pipette
- blood
- render
- belly
- blood pipette
- 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 - Lifetime
Links
- 239000008280 blood Substances 0.000 title description 5
- 210000004369 blood Anatomy 0.000 title description 5
- 210000001015 abdomen Anatomy 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
Definitions
- the chief feature of the blood pipette forming the subject-matter of the present invention is this that at its so-called belly or bulb at least one exterior flat portion is pro- 5 vided, by means of which the pipette is comparatively securely prevented from rolling along upon its support, and falling 'doWn' from the same. Simultaneously therewith the further advantage is attained that the 10 pipette when resting upon said fiat portion: is in a less oblique positionso that the liquid which has been sucked into it cannot easily flow out of it.
- the flat portion is, or the flat port-ions are,
- pipette can be thoroughly cleaned and also the thoroughintermixing of the-liquid con i 2.
- said portion being as arranged so as to render the pipette non-tilting, as set forth.
- the-graduated tion of the pipette are provided with an im bedded and burnt-in light-colored enamel.
- a denotes thepipette, b its bellyor bulb, and c the flat portion mentioned in the introductory part of this speciification.
Landscapes
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Sampling And Sample Adjustment (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
Description
June 10,1930. o. ARNOLD 1,762,807
' BLOOD PIPETTE Filed Oct; 19 1928 lnvenl'orr @l kdk Patented June 10, 1
PATENT OFFICE" or'ro ARNOLD, or SGHMIEDEFELD, GERMANY I BLOOD PIPETTE Application filed October 19, 1928, Serial No 313,594, and in Germany September 25, 1928.
The chief feature of the blood pipette forming the subject-matter of the present invention is this that at its so-called belly or bulb at least one exterior flat portion is pro- 5 vided, by means of which the pipette is comparatively securely prevented from rolling along upon its support, and falling 'doWn' from the same. Simultaneously therewith the further advantage is attained that the 10 pipette when resting upon said fiat portion: is in a less oblique positionso that the liquid which has been sucked into it cannot easily flow out of it. I
preferably of such a shape that sharp corners or edges likely to render 'propercleaning of the interior of the pipette difficult are obvi-' The flat portion is, or the flat port-ions are,
pipette can be thoroughly cleaned and also the thoroughintermixing of the-liquid con i 2. A pipette having an oblong spherical so.
bulb and'a flat portionion the outer surface,
thereof, said portion being as arranged so as to render the pipette non-tilting, as set forth.
In testimony whereofI affix my-signature. V
, OTTO ARNOLD}, V
at-ed. This provides at the same time for .7 thorough intermixing of the contents of the blood pipette with the aid of the glass bead generally-provided inthe belly of the same; f
In order to render the graduated scale of p the pipette more easily readable, also to render easier its manipulation, the-graduated tion of the pipette are provided with an im bedded and burnt-in light-colored enamel.
The inventionis illustrated diagrammatically and by way of example in the accomso panying drawingin which Figure 1 is a plan 7 of a pipette designed according to this invention; Figure 2 is a side-view of the same,
scale and, preferably, also the saidflat por-;
and Figure 3 a transverse section through V the belly of the pipette.
In the drawing, a denotes thepipette, b its bellyor bulb, and c the flat portion mentioned in the introductory part of this speciification.
pipette from rolling along upon its support, whatever this may be, and from falling down pette, when being in its position of rest, viz, with its fiat belly portion at the bottom, is in a lessobliqueposition than otherwise, the liquid contents of the pipette cannot flow out so easily as otherwise. 0Z denotes the This fiat portion prevents the from it, so as to break. Besides, as the pi-
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1762807X | 1928-09-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1762807A true US1762807A (en) | 1930-06-10 |
Family
ID=7742241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US313594A Expired - Lifetime US1762807A (en) | 1928-09-25 | 1928-10-19 | Blood pipette |
Country Status (1)
Country | Link |
---|---|
US (1) | US1762807A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2415480A (en) * | 1945-04-02 | 1947-02-11 | Ethel M Gassert | Blood count equipment |
US2488988A (en) * | 1945-05-21 | 1949-11-22 | Vilbiss Co | Nebulizeer |
US2836979A (en) * | 1955-04-05 | 1958-06-03 | Owens Illinois Glass Co | Mixing pipette |
US3091104A (en) * | 1958-05-05 | 1963-05-28 | Jr Vaughan Morrill | Method for shaping a glass tube preform |
US3885562A (en) * | 1973-11-16 | 1975-05-27 | John C Lampkin | Syringe with writing surface |
US4248830A (en) * | 1978-07-25 | 1981-02-03 | Veb Arzneimittelwerk Dresden | Device for microbiological testing |
US4877585A (en) * | 1987-12-09 | 1989-10-31 | Brandeis University | Dilution pipette device |
US5174162A (en) * | 1989-07-10 | 1992-12-29 | Hitachi, Ltd. | Pipetter, pipette tube, sample analyzing apparatus including them and method of mixing and pipetting liquids |
-
1928
- 1928-10-19 US US313594A patent/US1762807A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2415480A (en) * | 1945-04-02 | 1947-02-11 | Ethel M Gassert | Blood count equipment |
US2488988A (en) * | 1945-05-21 | 1949-11-22 | Vilbiss Co | Nebulizeer |
US2836979A (en) * | 1955-04-05 | 1958-06-03 | Owens Illinois Glass Co | Mixing pipette |
US3091104A (en) * | 1958-05-05 | 1963-05-28 | Jr Vaughan Morrill | Method for shaping a glass tube preform |
US3885562A (en) * | 1973-11-16 | 1975-05-27 | John C Lampkin | Syringe with writing surface |
US4248830A (en) * | 1978-07-25 | 1981-02-03 | Veb Arzneimittelwerk Dresden | Device for microbiological testing |
US4877585A (en) * | 1987-12-09 | 1989-10-31 | Brandeis University | Dilution pipette device |
US5174162A (en) * | 1989-07-10 | 1992-12-29 | Hitachi, Ltd. | Pipetter, pipette tube, sample analyzing apparatus including them and method of mixing and pipetting liquids |
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