US2660885A - Recording viscosimeter - Google Patents
Recording viscosimeter Download PDFInfo
- Publication number
- US2660885A US2660885A US238308A US23830851A US2660885A US 2660885 A US2660885 A US 2660885A US 238308 A US238308 A US 238308A US 23830851 A US23830851 A US 23830851A US 2660885 A US2660885 A US 2660885A
- Authority
- US
- United States
- Prior art keywords
- container
- viscosimeter
- frame
- yoke
- recording
- 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
- 239000007788 liquid Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 241001446467 Mama Species 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/14—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
Definitions
- This invention relates to certain improvements in viscosimeters, and more particularly to viscosimeters of the type in which the force reaction to a submerged member, rotatably driven in the l quid undergoing test, is measured to indicate the viscosity of the liquid.
- a viscosimeter of this general type, and on which this invention is an improvement is shown and described in the copending application of Gerhard Herzog, Serial No. 47,803 filed September 4, 1948, now Patent No. 2,643,543.
- Figures 4 and of the Herzog application drawings illustrate the particular type of apparatus on which this invention is an improvement.
- a source of heat to be applied to the liquid undergoing test is necessary in most cases.
- One method of heating is by use of electricity, and generally a heater coil is arranged in or around th container for the liquid under test.
- the present invention provides a means for connecting the electric heater element surrounding the specimen cup to a source of electrical power directly through the supporting members of the specimen cup assembly.
- the specimen cup I00 is rigidly mounted in a supporting yoke member H.
- An electric heater element I2 is mounted on the specimen cup in any suitable manner, so long as it is arranged to transfer heat to the liquid contained in the cup.
- a frame or base member [3 serves as a support for the entire instrument but only a part ofthe frame is shown in the drawing,
- the yoke member II is supported within the frame by a pair of torsion wires l4 and I5. These torsion wires are connected at their outer ends to the frame, in order to support the entire specimen cup and to any part yoke assembly in a torsionally resilient manner;
- the lower torsion wire I5 is insulated fromthe frame It by means of an insulating bushing 16.
- a second bushing I! serves to insulate the lower torsion wire l5 from the yoke member ll.
- Bushings l6 and I1 are rigidly aflixed to the frame member I3 and the yoke II respectively.
- torsion wire I5 is rigidly connected to the threadedv plugs l8 and I9 which may be screwed into the bushings l5 and I! as shown. Since the upper torsion wire M is connectedelectrically to the frame and to the yoke member, the latter member may serve as a return circuit for current applied to the heater coil I 2.
- a short insulated lead 20 is used to connect the lower torsion wire l5 to one side of th electrical heater l2. The other side of the heater coil may be connected of the frame or yoke assembly in some convenient manner. As shown in the drawing, a short lead 2
- a rotor member 22 is mounted for rotation within the specimen cup l0.
- Suitable driving means (not shown) is provided for the rotor.
- the upper torsion wire [4 is mounted in a bearing assembly 23 and a servomotor, shown diagrammatically on the drawing, is connected to drive the upper torsion wire in response to movements of the yoke assembly, all as shown and described in the above-mentioned application.
- thermostat control of the electrical supply it may often be desirable to maintain a predetermined temperature of the material within the specimen cup and this may be achieved by thermostat control of the electrical supply.
- a viscosimeter of the type in which the force reaction to a member rotatably driven in the liquid undergoing test is measured to indicate the liquid viscosity
- the combination comprising: a frame forming a support for the viscosimeter; a container for the liquid undergoing test; a rotor member supported for rotation within said container; a mechanical suspension for said container including a yoke member to which said container is rigidly attached, and a pair of torsionally resilient wires attached at one end of each to the top and bottom of said yoke member, the other ends of said wires being attached to said frame to support the container and yoke assembly in torsionally resilient fashion in said frame; insulating means interposed between at least one of said wires and said frame; an electrical heating element mounted on said container in heat exchange relation thereto; means connecting the yoke ends of said wires to said elec-' trical heater; means afioriling -conriection to the outer en'dsofsaid
- a viscosimeter of the type in which the force reaction to a member rotatablyedrivenin the liquid undergoing test is measured to indicate the liquid viscosity the' combination comprising: a container for the iiduid'undergoing test; a rotor member supported for rotation within said container; a torsion suspension fior -said container including a pair of members disposed on opposite sides of said container, each of'said.
- members being electrically conductive and at la t one be'ing' torsionally resilient an GIECtfiGaI heating e1ement':carried by said suspeilsidn and 4 mounted in heat exchange relation to said container; and means including said members for connecting said heating element to a source of electrical energy.
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- 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
Dec. 1. 1953 L. M. EVANS RECORDING VISCOSIMETER SERVO MOTOR.
Filed July 24, 1951 INVENTOR. Leon M.Eu ans A-Horneg Patented Dec. 1, 1953 anconnmo VISCOSIMETER Leon M. Evans, Houston,
New York, N. I, a corporation Texas Company, of Delaware Tex., assignor to The 7 Application July 24, 1951 Serial No. .238,308
4 Claims.
This invention relates to certain improvements in viscosimeters, and more particularly to viscosimeters of the type in which the force reaction to a submerged member, rotatably driven in the l quid undergoing test, is measured to indicate the viscosity of the liquid. A viscosimeter of this general type, and on which this invention is an improvement is shown and described in the copending application of Gerhard Herzog, Serial No. 47,803 filed September 4, 1948, now Patent No. 2,643,543. Figures 4 and of the Herzog application drawings illustrate the particular type of apparatus on which this invention is an improvement.
It is often desirable to make viscosity measurements at various temperatures, generally above room temperature, and consequently a source of heat to be applied to the liquid undergoing test is necessary in most cases. One method of heating is by use of electricity, and generally a heater coil is arranged in or around th container for the liquid under test.
A problem has existed in instruments of this type of providing a satisfactory means for connecting a source of electrical energy to the heater coil, in view of the fact that the container is in substantially constant motion throughout the period of taking measurements. It has been proposed to use a pair of mercury pools as conductors but this is somewhat cumbersome, since it requires additional apparatus and space. The present invention provides a means for connecting the electric heater element surrounding the specimen cup to a source of electrical power directly through the supporting members of the specimen cup assembly. 1
The accompanying sheet of drawing shows, somewhat in diagrammatic form, a preferred embodiment of this invention. Since this invention is an improvement on the apparatus shown and described in the above identified application, only that part of the complete apparatus necessary to understand the invention is illustrated herein.'
The specimen cup I00 is rigidly mounted in a supporting yoke member H. An electric heater element I2 is mounted on the specimen cup in any suitable manner, so long as it is arranged to transfer heat to the liquid contained in the cup. A frame or base member [3 serves as a support for the entire instrument but only a part ofthe frame is shown in the drawing, The yoke member II is supported within the frame by a pair of torsion wires l4 and I5. These torsion wires are connected at their outer ends to the frame, in order to support the entire specimen cup and to any part yoke assembly in a torsionally resilient manner;
The lower torsion wire I5 is insulated fromthe frame It by means of an insulating bushing 16. A second bushing I! serves to insulate the lower torsion wire l5 from the yoke member ll. Bushings l6 and I1 are rigidly aflixed to the frame member I3 and the yoke II respectively. The
torsion wire I5 is rigidly connected to the threadedv plugs l8 and I9 which may be screwed into the bushings l5 and I! as shown. Since the upper torsion wire M is connectedelectrically to the frame and to the yoke member, the latter member may serve as a return circuit for current applied to the heater coil I 2. A short insulated lead 20 is used to connect the lower torsion wire l5 to one side of th electrical heater l2. The other side of the heater coil may be connected of the frame or yoke assembly in some convenient manner. As shown in the drawing, a short lead 2| is connected between the other side of the heater and the yoke member ll.
As shown and described in the above mentioned copending application, a rotor member 22 is mounted for rotation within the specimen cup l0. Suitable driving means (not shown) is provided for the rotor.
The upper torsion wire [4 is mounted in a bearing assembly 23 and a servomotor, shown diagrammatically on the drawing, is connected to drive the upper torsion wire in response to movements of the yoke assembly, all as shown and described in the above-mentioned application.
As will be apparent to those skilled in the art, it may often be desirable to maintain a predetermined temperature of the material within the specimen cup and this may be achieved by thermostat control of the electrical supply.
While a preferred embodiment of the invention has been shown and described herein, various modifications within the scope of the appended claims will be apparent to those skilled in the art.
Iclaim: v
1. In a viscosimeter of the type in which the force reaction to a member rotatably driven in the liquid undergoing test is measured to indicate the liquid viscosity, the combination comprising: a frame forming a support for the viscosimeter; a container for the liquid undergoing test; a rotor member supported for rotation within said container; a mechanical suspension for said container including a yoke member to which said container is rigidly attached, and a pair of torsionally resilient wires attached at one end of each to the top and bottom of said yoke member, the other ends of said wires being attached to said frame to support the container and yoke assembly in torsionally resilient fashion in said frame; insulating means interposed between at least one of said wires and said frame; an electrical heating element mounted on said container in heat exchange relation thereto; means connecting the yoke ends of said wires to said elec-' trical heater; means afioriling -conriection to the outer en'dsofsaid'wires tO"2."SOl1IC8"Of electrical energy.
2. In a viscosimeter of the type in which the force reaction to a member rotatablyedrivenin the liquid undergoing test is measured to indicate the liquid viscosity, the' combination comprising: a container for the iiduid'undergoing test; a rotor member supported for rotation within said container; a torsion suspension fior -said container including a pair of members disposed on opposite sides of said container, each of'said.
members being electrically conductive and at la t one be'ing' torsionally resilient an GIECtfiGaI heating e1ement':carried by said suspeilsidn and 4 mounted in heat exchange relation to said container; and means including said members for connecting said heating element to a source of electrical energy.
3. A combination as defined by claim 2 in which the heating element is mounted on said container in heat exchange relation thereto. "4.3K combination as dfirid'by in which the said 'members comprise a"pair of""wire-like elements.
- LEON M. EVANS.
mamas Cited in the file of this patent ifi'i n'rEnfis'rA'rEs PATENTS Name Date Palmer Dec. 30, 1941 'oTHER REFERENCES Number
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US238308A US2660885A (en) | 1951-07-24 | 1951-07-24 | Recording viscosimeter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US238308A US2660885A (en) | 1951-07-24 | 1951-07-24 | Recording viscosimeter |
Publications (1)
Publication Number | Publication Date |
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US2660885A true US2660885A (en) | 1953-12-01 |
Family
ID=22897338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US238308A Expired - Lifetime US2660885A (en) | 1951-07-24 | 1951-07-24 | Recording viscosimeter |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3027749A (en) * | 1957-02-25 | 1962-04-03 | Miniature Prec Bearings Inc | Bearing torque test instrument |
WO1987001198A1 (en) * | 1985-08-19 | 1987-02-26 | Commonwealth Scientific And Industrial Research Or | Method and apparatus for the determination of viscosity |
AU587273B2 (en) * | 1985-08-19 | 1989-08-10 | Bread Research Institute of Australia Incorporated, The | Method and apparatus for determination of viscosity |
US4879897A (en) * | 1985-08-19 | 1989-11-14 | Commonwealth Scientific And Industrial Research Organization | Method and apparatus for the determination of viscosity |
US5503003A (en) * | 1994-12-14 | 1996-04-02 | Brookfield Engineering Laboratories, Inc. | Portable viscometer |
US5535619A (en) * | 1994-11-17 | 1996-07-16 | Brookfield Engineering Laboratories, Inc. | Pressurized viscometer |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2268526A (en) * | 1938-04-06 | 1941-12-30 | Standard Oil Dev Co | Galvanometer |
-
1951
- 1951-07-24 US US238308A patent/US2660885A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2268526A (en) * | 1938-04-06 | 1941-12-30 | Standard Oil Dev Co | Galvanometer |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3027749A (en) * | 1957-02-25 | 1962-04-03 | Miniature Prec Bearings Inc | Bearing torque test instrument |
WO1987001198A1 (en) * | 1985-08-19 | 1987-02-26 | Commonwealth Scientific And Industrial Research Or | Method and apparatus for the determination of viscosity |
AU587273B2 (en) * | 1985-08-19 | 1989-08-10 | Bread Research Institute of Australia Incorporated, The | Method and apparatus for determination of viscosity |
US4879897A (en) * | 1985-08-19 | 1989-11-14 | Commonwealth Scientific And Industrial Research Organization | Method and apparatus for the determination of viscosity |
US5535619A (en) * | 1994-11-17 | 1996-07-16 | Brookfield Engineering Laboratories, Inc. | Pressurized viscometer |
US5503003A (en) * | 1994-12-14 | 1996-04-02 | Brookfield Engineering Laboratories, Inc. | Portable viscometer |
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