WO1991012492A1 - Attachable type protractor for measuring perpendicularity and horizontal level - Google Patents

Attachable type protractor for measuring perpendicularity and horizontal level Download PDF

Info

Publication number
WO1991012492A1
WO1991012492A1 PCT/KR1991/000002 KR9100002W WO9112492A1 WO 1991012492 A1 WO1991012492 A1 WO 1991012492A1 KR 9100002 W KR9100002 W KR 9100002W WO 9112492 A1 WO9112492 A1 WO 9112492A1
Authority
WO
WIPO (PCT)
Prior art keywords
measuring
case
horizontal level
perpendicularity
measured
Prior art date
Application number
PCT/KR1991/000002
Other languages
French (fr)
Inventor
Kyung Ho Cho
Original Assignee
Kyung Ho Cho
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kyung Ho Cho filed Critical Kyung Ho Cho
Publication of WO1991012492A1 publication Critical patent/WO1991012492A1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/10—Measuring inclination, e.g. by clinometers, by levels by using rolling bodies, e.g. spheres, cylinders, mercury droplets
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/12—Measuring inclination, e.g. by clinometers, by levels by using a single pendulum plumb lines G01C15/10
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
    • G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
    • G01C9/36—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble of the spherical type, i.e. for indicating the level in all directions

Definitions

  • the present invention relates to a protractor for measuring perpendicularity and horizontal level utili ⁇ zing gravity of earth due to the law of gravitation of Newton, and more particularly to a protector for measuring perpendicularity and horizontal level in which liquid is filled within a hermetically sealed transparent container having semispherical inner sur ⁇ face so as a single bubble to be formed and wherein a ball which makes always perpendicular state toward gravity direction of earth together with said single bubble is contained within said hermetically sealed container so that perpendicularity and horizontal level can be correctly measured, and even besides slant to frontward or rearward of measuring subject can be measured.
  • a conventionally known proctractor for measuring perpendicularity and horizontal level is, as shown in FIG. 6, made in such a manner that two transparent single bubble tubes 30, 31 are fixed to a bady so as to be perpendicularly crossed, however there has been problem, that this is not only for measuring perpendicularity and horizontal level respectively through two transparant single bubble tubes 30, 31 arranged on said body 32 so as to be perpencularly crossed by putting the protractor on measuring sub ⁇ ject, but also slant to frontward and rearward of measuring subject can not be measured.
  • Another object of the present invention is to pro ⁇ vide a protractor for measuring perpendicularity and horizontal level in which liquid is filled within a - - hermetically sealed transparent container having se ispherical inner surface so as a single bubble to be formed and wherein a ball which makes always perpendicular state toward gravity direction of earth together with said single bubble is contained within
  • FIG. 1 is a perspective view of the present invention
  • FIG. 2 is a cross sectional view taken along line I - I of FIG. 1
  • FIG. 3 is a cross sectional view taken along line II - II of FIG. 1
  • FIG. 4 is a cross sectional view taken along line III - III of FIG. 1
  • FIG. 5 is a magnified cross sectional view for showing auxiliary indicating device shown in FIG. 4
  • FIG. 6 is a perspective view of conventional proctractor for measuring perpendicularity and horizontal level.
  • like reference numerals and symbols are used for desingnating like or equiva ⁇ lent parts or portions, for simplicity of illustration and explanation.
  • FIG. 1 is a perspective view of the present invention, and wherein hermetically sealed trans ⁇ parent container 2 for measuring perpendicularity and horizontal level of measuring subject is con ⁇ tained at the middle of case 1, and adjusting levers 3, 3 1 of sucking attachment board which will be hereinafter described and for attahing and detaching the case 1 on top surface, front surface or side surface of measuring subject are pivotably mounted by pin 4 within the interior of both sides of the case 1, and auxiliary measuring device 5 capable of measuring frontward or rearward slant of measuring subject is inserted and fixed at a side of front surface of the case 1.
  • FIG. 2 is a cross sectional view taken along line I - I of FIG. 1, wherein connecting state of adjust- i n( 3 levers 3, 3' with said sucking attachment board 6, 6 1 together with structure of hermetically sealed transparent container 2 are shown.
  • the hermetically sealed transparent container 2 is a cylindrical form in external appearance and its top of inner surface is formed in semispherically cuved surface 7, and it is inserted and fixed into the interior of stepped wall 9 protruded at bottom periphery of cylindrical tube bo-dy 8 formed to the
  • Liquid 11 is filled into said hermetically sealed transparent contriner 2 so as single bubble 10 to be formed, and ball 12 capable of measuring vertical and horizontal state of measuring subject by making always vertical state toward gravity direction of earth is 0 contained together with said single bubble 10 therein, and its bottom is closed by lit 2'.
  • Both side wall portions 14, 14' of the adjusting levers 3, 3' are formed by curved line portion 17 and linear line portion 18, and in a state that the adjusting levers 3, 3 1 are depressed, the linear line portion 18 becomes contacted with the bottom wall of the case 1 and accordingly the sucking attachment boards 6, 6' are closely attached with the measuring subject, and when the adjusting levers 3, 3' are lifted up, the curved line portion 17 is contacted with the bottom wall 15 of the case 1 whereby the upper bar portions 13, 13' of the sucking attachment boards 6, 6' become bent and lifted up and becoming to be detached from the state attached with the measuring subject.
  • FIGS. 4 and 5 show an auxiliary measuring device in detail.
  • the auxiliary measuring device 5 is constructed in such a manner that indicating needle 23 perforated with a hole 22 at the center thereof is pivotably inserted to supporting projection 21 having a taperec head 20 protruded at center of cylindrical case 19, and transparent cover plate 24 is mounted on front surface of said cylindrical case 19, and since the incicating needle 23 is pivotably inserted to the supporting projection 21, it always points the gravity direction of the earth, and accordingly slant to frontward or rearward of the measuring subject can be measured. And, angle displaying scale 25, 26 are displayed around circumferentical edge of the hermetically sealed transparent container 2 and auxiliary meas ⁇ ured.
  • angle displaying scale 25, 26 are displayed around circumferentical edge of the hermetically sealed transparent container 2 and auxiliary measu ⁇ ring device 5.
  • the present invention constructed as these has advantages that not only vertical and horizontal state of the measuring subject can be correctly measured by the ball 12 and single bubble 10 con ⁇ tained within the hermetically sealed transparent container 2 attached to the case 1, but also even the slant to forward and rearward of the measuring subject can also be measured by utilizing the aux ⁇ iliary measuring advice 5.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)
  • Drawing Aids And Blackboards (AREA)

Abstract

This invention relates to an attachable type protractor for measuring perpendicularity and horizontal level as well as slant to forward and rearward of measuring subject. The invention is constructed in such a manner that hermetically sealed transparent container (2) filled with liquid (11) including single bubble (10) and non-metallic ball (12) is mounted at the middle of case (1) so as to measure perpendicularity and horizontal level of measuring subject, and sucking attachment boards (6, 6') with adjusting levers (3, 3') are arranged to top, front and side surface of measuring subject, and auxiliary measuring device (5) capable of measuring slant to forward and rearward is mounted at a side of the case. According to the invention, perpendicularity and horizontal level of subject to be measured can be correctly measured and also slant to forward and rearward can also be measured.

Description

SPECIFICATION TITLE
Attachable type protractor for measuring perpendicularity and horizontal level
TECHNICAL FIELD
The present invention relates to a protractor for measuring perpendicularity and horizontal level utili¬ zing gravity of earth due to the law of gravitation of Newton, and more particularly to a protector for measuring perpendicularity and horizontal level in which liquid is filled within a hermetically sealed transparent container having semispherical inner sur¬ face so as a single bubble to be formed and wherein a ball which makes always perpendicular state toward gravity direction of earth together with said single bubble is contained within said hermetically sealed container so that perpendicularity and horizontal level can be correctly measured, and even besides slant to frontward or rearward of measuring subject can be measured.
BACKGROUND ART
A conventionally known proctractor for measuring perpendicularity and horizontal level is, as shown in FIG. 6, made in such a manner that two transparent single bubble tubes 30, 31 are fixed to a bady so as to be perpendicularly crossed, however there has been problem, that this is not only for measuring perpendicularity and horizontal level respectively through two transparant single bubble tubes 30, 31 arranged on said body 32 so as to be perpencularly crossed by putting the protractor on measuring sub¬ ject, but also slant to frontward and rearward of measuring subject can not be measured.
DISCLOSURE OF INVENTION
Therefore, it is an object of the present invention to provide a protrator for measuring perpendicularity
10 and horizontal level for solving such' conventional problems.
Another object of the present invention is to pro¬ vide a protractor for measuring perpendicularity and horizontal level in which liquid is filled within a - - hermetically sealed transparent container having se ispherical inner surface so as a single bubble to be formed and wherein a ball which makes always perpendicular state toward gravity direction of earth together with said single bubble is contained within
20 said hermetically sealed container so that perpendic¬ ularity and horizontal level can be correctly measured, and even besides slant to frontward and rearward of measuring subject can be measured.
The forgoing and other objects as well as advantages of the present invention will become clear by follow¬ ing description of the invention with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
For a better understanding of the invention, and to show how the same may be carried out into effect, reference will now be made, by way of example, with respect to the accompanying drawings, in which : FIG. 1 is a perspective view of the present invention, FIG. 2 is a cross sectional view taken along line I - I of FIG. 1, FIG. 3 is a cross sectional view taken along line II - II of FIG. 1, FIG. 4 is a cross sectional view taken along line III - III of FIG. 1, FIG. 5 is a magnified cross sectional view for showing auxiliary indicating device shown in FIG. 4, and FIG. 6 is a perspective view of conventional proctractor for measuring perpendicularity and horizontal level. Throughout the drawings, like reference numerals and symbols are used for desingnating like or equiva¬ lent parts or portions, for simplicity of illustration and explanation.
BEST MODE OF CARRING OUT OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the accompany¬ ing drawings as followings.
FIG. 1 is a perspective view of the present invention, and wherein hermetically sealed trans¬ parent container 2 for measuring perpendicularity and horizontal level of measuring subject is con¬ tained at the middle of case 1, and adjusting levers 3, 31 of sucking attachment board which will be hereinafter described and for attahing and detaching the case 1 on top surface, front surface or side surface of measuring subject are pivotably mounted by pin 4 within the interior of both sides of the case 1, and auxiliary measuring device 5 capable of measuring frontward or rearward slant of measuring subject is inserted and fixed at a side of front surface of the case 1.
FIG. 2 is a cross sectional view taken along line I - I of FIG. 1, wherein connecting state of adjust- in(3 levers 3, 3' with said sucking attachment board 6, 61 together with structure of hermetically sealed transparent container 2 are shown.
The hermetically sealed transparent container 2 is a cylindrical form in external appearance and its top of inner surface is formed in semispherically cuved surface 7, and it is inserted and fixed into the interior of stepped wall 9 protruded at bottom periphery of cylindrical tube bo-dy 8 formed to the
5 case 1.
Liquid 11 is filled into said hermetically sealed transparent contriner 2 so as single bubble 10 to be formed, and ball 12 capable of measuring vertical and horizontal state of measuring subject by making always vertical state toward gravity direction of earth is 0 contained together with said single bubble 10 therein, and its bottom is closed by lit 2'.
For said liquid 11, it is desirable to use colored antifreezing solution in order to decrease shock according to the collision of the ball 12 and the
•jc hermetically sealed transparent container 2 and to expect preciseness of measurement, and for said ball 12, article which is made from glass, ceramic or synthetic resin being of not metal should be used so as not to receive influence of magnetic material
20 which may be located around the measuring subject.
Upper bar portions 13, 13" of the sucking attach¬ ment boards 6, 6' are pivotably fixed by pin 4 to • oth wall portions 14, 14' of said adjusting levers 3, 3' respectively, and the upper bar portions 13, 13' of said sucking attachment boards 6, 6" are guided by holes 16, 16' penetrated to bottom wall 15 of the case respectively.
Both side wall portions 14, 14' of the adjusting levers 3, 3' are formed by curved line portion 17 and linear line portion 18, and in a state that the adjusting levers 3, 31 are depressed, the linear line portion 18 becomes contacted with the bottom wall of the case 1 and accordingly the sucking attachment boards 6, 6' are closely attached with the measuring subject, and when the adjusting levers 3, 3' are lifted up, the curved line portion 17 is contacted with the bottom wall 15 of the case 1 whereby the upper bar portions 13, 13' of the sucking attachment boards 6, 6' become bent and lifted up and becoming to be detached from the state attached with the measuring subject.
FIGS. 4 and 5 show an auxiliary measuring device in detail.
The auxiliary measuring device 5 is constructed in such a manner that indicating needle 23 perforated with a hole 22 at the center thereof is pivotably inserted to supporting projection 21 having a taperec head 20 protruded at center of cylindrical case 19, and transparent cover plate 24 is mounted on front surface of said cylindrical case 19, and since the incicating needle 23 is pivotably inserted to the supporting projection 21, it always points the gravity direction of the earth, and accordingly slant to frontward or rearward of the measuring subject can be measured. And, angle displaying scale 25, 26 are displayed around circumferentical edge of the hermetically sealed transparent container 2 and auxiliary meas¬ ured.
And, angle displaying scale 25, 26 are displayed around circumferentical edge of the hermetically sealed transparent container 2 and auxiliary measu¬ ring device 5.
The present invention constructed as these has advantages that not only vertical and horizontal state of the measuring subject can be correctly measured by the ball 12 and single bubble 10 con¬ tained within the hermetically sealed transparent container 2 attached to the case 1, but also even the slant to forward and rearward of the measuring subject can also be measured by utilizing the aux¬ iliary measuring advice 5.
It will be appreciated that the present invention is not restricted to the particular embodiment that has been described hereinbefore, and that variations and modifications may be made therein without depart- ing from the spirit and scope of the invention as defined in the appended claims and equivalents there-

Claims

CLAIM
1. Attachable type protractor for measuring perpendicularity and horizontal level which is characterized in that :
5 heremetically sealed transparent container 2 having semispherically curved inner top surface 7 and cylindrical tubular middle body which is filled with liquid 11 including single bubble 10 and non- metallic small ball 12 is mounted at the middle of
10 case 1 so as to make said single bubble 10 and small ball 12 to maintain perpendicular state toward gravity direction of earth so that vertical and horizontal state of measuring subject can be measured in compar¬ ing with angle indicating scale 25 carved on the case
15 1 ; auxiliary measuring device 5 in which indicating needle 23 is pivotably mounted to supporting project¬ ion 21 located at center of cylindrical case 19 and being sealed by transparent cover plate 24 is
20 attached on front surface of a side of case 1 so that slant to forward and rearward of measuring subfect can be measured in comparing with angle displaying
« scale 26 carved on the case ; and sucking attachment * . boards 6, 6' are provided so as to attach to the
25 measuring subject by adjusting levers 3, 3' at both sides of the case 1.
PCT/KR1991/000002 1990-02-10 1991-02-11 Attachable type protractor for measuring perpendicularity and horizontal level WO1991012492A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1990/1631 1990-02-10
KR1019900001631A KR910015838A (en) 1990-02-10 1990-02-10 Detachable protractor for vertical and horizontal measurement

Publications (1)

Publication Number Publication Date
WO1991012492A1 true WO1991012492A1 (en) 1991-08-22

Family

ID=19295973

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR1991/000002 WO1991012492A1 (en) 1990-02-10 1991-02-11 Attachable type protractor for measuring perpendicularity and horizontal level

Country Status (3)

Country Link
KR (1) KR910015838A (en)
AU (1) AU7244991A (en)
WO (1) WO1991012492A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2303210A (en) * 1995-07-12 1997-02-12 Terry John Bacon Level device
EP0919786A1 (en) * 1997-12-01 1999-06-02 Stabila-Messgeräte Gustav Ullrich GmbH & Co.KG Spirit level
DE10157495A1 (en) * 2001-11-23 2003-06-05 Fruechtl Ralf Spirit level with suction fasteners, includes button-operated chamber connected to suction and sealing unit
US8286360B1 (en) 2011-04-01 2012-10-16 Black & Decker Inc. Tool assembly
CN103591935A (en) * 2013-05-08 2014-02-19 柳州铁道职业技术学院 Portable building slope gradient detector
LU92510B1 (en) * 2014-08-01 2016-02-02 Lopes Antonio Domingos BUBBLE LEVEL WITH SUCTION CUPS
CN113324520A (en) * 2021-05-08 2021-08-31 安徽宏祥数控科技有限公司 Adsorption type levelness detection device assembled by machine tool metal plate shell
CN115993111A (en) * 2023-03-24 2023-04-21 滨州市博恒工程管理服务有限公司 Building engineering detection equipment based on leveling measurement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200487449Y1 (en) * 2017-06-28 2018-09-17 (주)에스비 Level

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH157078A (en) * 1931-11-03 1932-09-15 May Paul Spirit level with inclinometer.
DE1952869A1 (en) * 1969-10-21 1971-04-29 Porsche Kg Measuring device, especially for checking the horizontal plane
DE2063365A1 (en) * 1970-12-23 1972-07-13 Kern, Heinz, 7762 Ludwigshafen Spirit level
DE3125510A1 (en) * 1981-06-29 1983-01-13 Stadtwerke Neu-Isenburg, 6078 Neu-Isenburg Levelling device, particularly box level

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH157078A (en) * 1931-11-03 1932-09-15 May Paul Spirit level with inclinometer.
DE1952869A1 (en) * 1969-10-21 1971-04-29 Porsche Kg Measuring device, especially for checking the horizontal plane
DE2063365A1 (en) * 1970-12-23 1972-07-13 Kern, Heinz, 7762 Ludwigshafen Spirit level
DE3125510A1 (en) * 1981-06-29 1983-01-13 Stadtwerke Neu-Isenburg, 6078 Neu-Isenburg Levelling device, particularly box level

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2303210A (en) * 1995-07-12 1997-02-12 Terry John Bacon Level device
EP0919786A1 (en) * 1997-12-01 1999-06-02 Stabila-Messgeräte Gustav Ullrich GmbH & Co.KG Spirit level
DE10157495A1 (en) * 2001-11-23 2003-06-05 Fruechtl Ralf Spirit level with suction fasteners, includes button-operated chamber connected to suction and sealing unit
US8286360B1 (en) 2011-04-01 2012-10-16 Black & Decker Inc. Tool assembly
US8302320B2 (en) 2011-04-01 2012-11-06 Black & Decker Inc. Tool assembly
US8424217B2 (en) 2011-04-01 2013-04-23 Black & Decker Inc. Tool assembly
CN103591935A (en) * 2013-05-08 2014-02-19 柳州铁道职业技术学院 Portable building slope gradient detector
LU92510B1 (en) * 2014-08-01 2016-02-02 Lopes Antonio Domingos BUBBLE LEVEL WITH SUCTION CUPS
CN113324520A (en) * 2021-05-08 2021-08-31 安徽宏祥数控科技有限公司 Adsorption type levelness detection device assembled by machine tool metal plate shell
CN115993111A (en) * 2023-03-24 2023-04-21 滨州市博恒工程管理服务有限公司 Building engineering detection equipment based on leveling measurement

Also Published As

Publication number Publication date
AU7244991A (en) 1991-09-03
KR910015838A (en) 1991-09-30

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