US2804777A - Flask swirler - Google Patents

Flask swirler Download PDF

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Publication number
US2804777A
US2804777A US549444A US54944455A US2804777A US 2804777 A US2804777 A US 2804777A US 549444 A US549444 A US 549444A US 54944455 A US54944455 A US 54944455A US 2804777 A US2804777 A US 2804777A
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US
United States
Prior art keywords
shaft
axis
lever
flask
arm
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
Application number
US549444A
Inventor
Kerr-Lawson Douglas Edward
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.)
SWASTIKA LAB Ltd
SWASTIKA LABORATORIES Ltd
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SWASTIKA LAB Ltd
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Application filed by SWASTIKA LAB Ltd filed Critical SWASTIKA LAB Ltd
Priority to US549444A priority Critical patent/US2804777A/en
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Publication of US2804777A publication Critical patent/US2804777A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/20—Mixing the contents of independent containers, e.g. test tubes
    • B01F31/22—Mixing the contents of independent containers, e.g. test tubes with supporting means moving in a horizontal plane, e.g. describing an orbital path for moving the containers about an axis which intersects the receptacle axis at an angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/20—Mixing the contents of independent containers, e.g. test tubes
    • B01F31/25—Mixing the contents of independent containers, e.g. test tubes the containers being submitted to a combination of movements other than within a horizontal plane, e.g. rectilinear and pivoting movement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18184—Crank, pitman, and lever

Definitions

  • the lever is preferably formed from a strip of spring steel, the major width of the lever lying in a plane transverse to the axis 10a of the shaft 10.
  • a further advantage accruing from the invention when used for swirling a flask resides in the fact that the velocity of movement of the flask is not constant. This is due to the fact that the maximum velocity of the arm 14 occurs when the arm is rising and the lever 16 is at a tangent to the locus of'the pivot 17.
  • the apparatus instead of being used for swirling a flask, may alternatively be used for moving a stirring rod or paddle, or used for such purposes as providing animation in display equipments, etc.
  • Apparatus for converting a rotary motion into a compound oscillatory motion comprising in combination, a first shaft associated with the source of rotary motion for said shaft to be rotated about its longitudinal axis, a crank arm extending radially of the end of said shaft, a lever pivotally connected to said crank arm at a point remote from the axis of said shaft, a second shaft fast with the other end of said lever and extending in a direction which is substantially the same as the direction of the axis of said first shaft, said second shaft being adapted to support a member for said member to extend laterally of said second shaft, a second arm pivoted about said second shaft is journalled, the combined oscillatory motion imparted to said second shaft and said arm by said lever when said first shaft is rotated causing a point on the longitudinal axis of said member to trace an elliptical path so that said axis defines the surface of an imaginary cone.
  • Apparatus for imparting a combined oscillatory motion to a body including a shaft adapted to support said body for the longitudinal axis of said body to extend laterally of the longitudinal axis of said shaft, a pivot bearing having its axis normal to said shaft and intersecting the axis of said body, an arm pivotally supported from said bearing, a journal bearing carried by said arm and in which said shaft is journalled, and means for osciliating the said arm about the axis of said pivot hearing and oscillating said shaft about the longitudinal axis thereof to cause said axis of said body to oscillate about the point of intersection of the axis of said longitudinal shaft, body and pivot bearing, the combined oscillatory motion imparted to said arm and said shaft causing a point on the longitudinal axis of said body to trace an elliptical path so that said axis defines the surface of an imaginary cone.
  • Apparatus for imparting a combined oscillatory motion to a body including a shaft adapted to support said body for the longitudinal axis of said body to extend laterally of the longitudinal axis of said shaft, a pivot bearing having its axis normal to said shaft and intersecting the axis of said body, an arm pivotally supported from said bearing, a journal bearing carried by said arm and in which said shaft is journalled, a lever rigidly secured to said shaft and extending laterally of said shaft in a direction substantially perpendicular to the plane containing the axis of said pivot and journal bearings, and means for causing a point on said lever remote from said shaft to describe a circular locus in a plane transverse to the axis of said shaft, the combined oscillatory motion imparted to said arm and said shaft by said lever when said point describes said locus causing a point on the longitudinal axis of said body to trace an elliptical path so that said axis defines the surface of an imaginary cone.
  • Apparatus for imparting a combined oscillatory motion to a body including a shaft adapted to support said body for the longitudinal axis of said body to extend laterally of the longitudinal axis of said shaft, a pivot bearing having its axis normal to said shaft and intersecting the axis of said body, an arm pivotally supported from said bearing, a journal bearing carried by said arm and in which said shaft is journalled, a lever rigidly secured to said shaft adjacent said journal bearing and extending laterally of said shaft in a direction substantially perpen dicular to the plane containing the axis of said pivot and journal bearings, and means for causing a point on said lever remote from said shaft to describe a circular locus in a plane transverse to the axis of said shaft, the combined oscillatory motion imparted to said arm and said shaft by said lever when said point describes said locus causing a point on the longitudinal axis of said body to trace an elliptical path so that said axis defines the surface of an imaginary cone.
  • Apparatus for imparting a compound oscillatory motion to a body including a shaft adapted to support said body for the longitudinal axis of said body to extend laterally of the longitudinal axis of said shaft,'a pivot bearing having its axis normal to said shaft and intersecting the axis of said body, an arm pivotally supported from said bearing, a journal bearing carried by said arm, and in which said shaft is journalled, a lever rigidly secured 'to saidshaft adjacent said journal bearing and extending laterally of said shaft in a direction substantially perpendicular to the plane containing the axis of said pivot and journal bearings, a crank arm mounted for rotary movement in a plane transverse to the axisof said shaft, means for rotating said crank arm and means pivotally connecting the end of the lever remote from said shaft to said crank arm on a radius of the axis of rotation thereof, the combined oscillatory motion imparted to said arm and said shaft by said lever when said crank arm is rotated causing a point on the longitudinal axis of said body to

Description

Sept. 3, 1957 D. E. KERR-LAWSON 2,804,777
FLASK SWIRLER Filed Nov. 28, 195s- Inventor Douglas Edward Kerl -Luwson Att ys Considering now the effects of the movement of the lever 16 in the direction of the arrows 16b, as the lever is rigidly connected to the shaft 10, movement in the direction of the arrows '16bwill cause the shaft to be rotated about its longitudinal axis a. This rotation imparts to the flask a movement in the direction of the arrows 11c, and it will be again observed that the point X at the intersection of the axes 10a, 11a, 15a is unaffected by the movement.
It will thus be seen that rotation of the crank arm 18 imparts to the flask movements in the direction of the arrows 11b and 11c,which movements occur in combination, the displacement in the direction of the arrows 11b being at a minimum when the displacement in the direction of the arrows 11c is at a maximum. The result of these combined movements is that the flask traces a circular or elliptical path, as is indicated by the arrows 11d, the distance of the point X from lever 16, the length of the lever 16, and the radius of the locus of the pin 17 determining whether the path followed by the flask be circular or elliptical. Expressed another way, the axis 11a of the flask below the point X will follow a path generating the surface of an imaginary cone when the shaft 19 is rotated.
To cater for misalignment of the ends of the lever 16 due to the rise and fall of the arm 14, the lever is preferably formed from a strip of spring steel, the major width of the lever lying in a plane transverse to the axis 10a of the shaft 10.
As the point X is not displaced whenithe apparatus is in use, and the point X lies within the throat of the flask, it will be appreciated that .very little movement is imparted to the throat of the flask as compared with the bulb thereof. This has the desirable effect that fluids can be introduced into the flask while the apparatus is in motion with little danger of any fluid which may contact the inner wall of the throat being thrown outwardly by centrifugal action. Also, it is comparatively easy to introduce the fluid into the flask while it is in motion.
A further advantage accruing from the invention when used for swirling a flask, resides in the fact that the velocity of movement of the flask is not constant. This is due to the fact that the maximum velocity of the arm 14 occurs when the arm is rising and the lever 16 is at a tangent to the locus of'the pivot 17.
On the other hand, the swinging of the lever 16 in the direction of the arrow 16b is constant for each traverse of the pin 17 from one side to the other of a horizontal diameter of the laws; This inconstancy in velocity has the beneficial effect of causing increased turbulence within fluids contained in the flask, and results in highly efficient mixing of the fluids.
The apparatus, instead of being used for swirling a flask, may alternatively be used for moving a stirring rod or paddle, or used for such purposes as providing animation in display equipments, etc.
'What I claim as my invention is:
1. Apparatus for converting a rotary motion into a compound oscillatory motion, comprising in combination, a first shaft associated with the source of rotary motion for said shaft to be rotated about its longitudinal axis, a crank arm extending radially of the end of said shaft, a lever pivotally connected to said crank arm at a point remote from the axis of said shaft, a second shaft fast with the other end of said lever and extending in a direction which is substantially the same as the direction of the axis of said first shaft, said second shaft being adapted to support a member for said member to extend laterally of said second shaft, a second arm pivoted about said second shaft is journalled, the combined oscillatory motion imparted to said second shaft and said arm by said lever when said first shaft is rotated causing a point on the longitudinal axis of said member to trace an elliptical path so that said axis defines the surface of an imaginary cone. v
2. Apparatus for imparting a combined oscillatory motion to a body, including a shaft adapted to support said body for the longitudinal axis of said body to extend laterally of the longitudinal axis of said shaft, a pivot bearing having its axis normal to said shaft and intersecting the axis of said body, an arm pivotally supported from said bearing, a journal bearing carried by said arm and in which said shaft is journalled, and means for osciliating the said arm about the axis of said pivot hearing and oscillating said shaft about the longitudinal axis thereof to cause said axis of said body to oscillate about the point of intersection of the axis of said longitudinal shaft, body and pivot bearing, the combined oscillatory motion imparted to said arm and said shaft causing a point on the longitudinal axis of said body to trace an elliptical path so that said axis defines the surface of an imaginary cone. g
3. Apparatus for imparting a combined oscillatory motion to a body, including a shaft adapted to support said body for the longitudinal axis of said body to extend laterally of the longitudinal axis of said shaft, a pivot bearing having its axis normal to said shaft and intersecting the axis of said body, an arm pivotally supported from said bearing, a journal bearing carried by said arm and in which said shaft is journalled, a lever rigidly secured to said shaft and extending laterally of said shaft in a direction substantially perpendicular to the plane containing the axis of said pivot and journal bearings, and means for causing a point on said lever remote from said shaft to describe a circular locus in a plane transverse to the axis of said shaft, the combined oscillatory motion imparted to said arm and said shaft by said lever when said point describes said locus causing a point on the longitudinal axis of said body to trace an elliptical path so that said axis defines the surface of an imaginary cone.
4. Apparatus for imparting a combined oscillatory motion to a body, including a shaft adapted to support said body for the longitudinal axis of said body to extend laterally of the longitudinal axis of said shaft, a pivot bearing having its axis normal to said shaft and intersecting the axis of said body, an arm pivotally supported from said bearing, a journal bearing carried by said arm and in which said shaft is journalled, a lever rigidly secured to said shaft adjacent said journal bearing and extending laterally of said shaft in a direction substantially perpen dicular to the plane containing the axis of said pivot and journal bearings, and means for causing a point on said lever remote from said shaft to describe a circular locus in a plane transverse to the axis of said shaft, the combined oscillatory motion imparted to said arm and said shaft by said lever when said point describes said locus causing a point on the longitudinal axis of said body to trace an elliptical path so that said axis defines the surface of an imaginary cone.
5. Apparatus for imparting a compound oscillatory motion to a body, including a shaft adapted to support said body for the longitudinal axis of said body to extend laterally of the longitudinal axis of said shaft,'a pivot bearing having its axis normal to said shaft and intersecting the axis of said body, an arm pivotally supported from said bearing, a journal bearing carried by said arm, and in which said shaft is journalled, a lever rigidly secured 'to saidshaft adjacent said journal bearing and extending laterally of said shaft in a direction substantially perpendicular to the plane containing the axis of said pivot and journal bearings, a crank arm mounted for rotary movement in a plane transverse to the axisof said shaft, means for rotating said crank arm and means pivotally connecting the end of the lever remote from said shaft to said crank arm on a radius of the axis of rotation thereof, the combined oscillatory motion imparted to said arm and said shaft by said lever when said crank arm is rotated causing a point on the longitudinal axis of said body to trace an elliptical path so that said axis defines the surface of an imaginary cone.
6. Apparatus according to claim 3, in which said lever is resilient in a direction axially of said shaft.
References Cited in the file of this patent UNITED STATES PATENTS 2,155,596 Hawes Apr. 25, 1939 5 2,539,851 Massey Jan. 30, 1951 FOREIGN PATENTS 858,903 Germany Dec. 11, 1952
US549444A 1955-11-28 1955-11-28 Flask swirler Expired - Lifetime US2804777A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927467A (en) * 1958-02-21 1960-03-08 Sala Luis Campdera Transmission mechanism for doll with independently movable limbs
US4147516A (en) * 1976-04-09 1979-04-03 Debruyne Norman A Oscillatory mechanisms
US5215376A (en) * 1989-09-08 1993-06-01 Becton, Dickinson And Company Method for causing vortices in a test tube
US5269827A (en) * 1991-03-01 1993-12-14 Leco Corporation Analytical sample preparation system
US5313047A (en) * 1991-03-01 1994-05-17 Leco Corporation Analytical sample preparation system
US5315091A (en) * 1993-03-02 1994-05-24 Leco Corporation Resistively heated sample preparation apparatus
US5884524A (en) * 1997-09-30 1999-03-23 Single-Tree Art Industry Co., Ltd. Multi-directional swinging mechanism
US20040022120A1 (en) * 2002-02-22 2004-02-05 Poo Ramon E. Orbital shaker for cell extraction
US20040109385A1 (en) * 2002-08-05 2004-06-10 Integrated Biosystems, Inc. Systems and methods for thawing, mixing, and processing biopharmaceutical materials
CN109289641A (en) * 2018-10-29 2019-02-01 泉州医学高等专科学校 A kind of test tube oscillating uniform device
CN109772256A (en) * 2019-02-27 2019-05-21 赣南医学院 A kind of configuration equipment synthesizing Anastrozole complex
US10486119B2 (en) * 2015-07-06 2019-11-26 Provaine System for preparing a formulation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2155596A (en) * 1938-06-21 1939-04-25 Ben M Hawes Means for mixing samples
US2539851A (en) * 1949-04-26 1951-01-30 George F Massey Babcock test mixer
DE858903C (en) * 1951-01-05 1952-12-11 Desaga G M B H C Schuettelwerk for the production of mixtures from liquids

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2155596A (en) * 1938-06-21 1939-04-25 Ben M Hawes Means for mixing samples
US2539851A (en) * 1949-04-26 1951-01-30 George F Massey Babcock test mixer
DE858903C (en) * 1951-01-05 1952-12-11 Desaga G M B H C Schuettelwerk for the production of mixtures from liquids

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927467A (en) * 1958-02-21 1960-03-08 Sala Luis Campdera Transmission mechanism for doll with independently movable limbs
US4147516A (en) * 1976-04-09 1979-04-03 Debruyne Norman A Oscillatory mechanisms
US5215376A (en) * 1989-09-08 1993-06-01 Becton, Dickinson And Company Method for causing vortices in a test tube
US5269827A (en) * 1991-03-01 1993-12-14 Leco Corporation Analytical sample preparation system
US5277493A (en) * 1991-03-01 1994-01-11 Leco Corporation Analytical sample preparation system
US5313047A (en) * 1991-03-01 1994-05-17 Leco Corporation Analytical sample preparation system
US5315091A (en) * 1993-03-02 1994-05-24 Leco Corporation Resistively heated sample preparation apparatus
US5884524A (en) * 1997-09-30 1999-03-23 Single-Tree Art Industry Co., Ltd. Multi-directional swinging mechanism
US20040022120A1 (en) * 2002-02-22 2004-02-05 Poo Ramon E. Orbital shaker for cell extraction
US7188994B2 (en) * 2002-02-22 2007-03-13 Biorep Technologies, Inc. Orbital shaker for cell extraction
US20040109385A1 (en) * 2002-08-05 2004-06-10 Integrated Biosystems, Inc. Systems and methods for thawing, mixing, and processing biopharmaceutical materials
US10486119B2 (en) * 2015-07-06 2019-11-26 Provaine System for preparing a formulation
CN109289641A (en) * 2018-10-29 2019-02-01 泉州医学高等专科学校 A kind of test tube oscillating uniform device
CN109772256A (en) * 2019-02-27 2019-05-21 赣南医学院 A kind of configuration equipment synthesizing Anastrozole complex

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