CN1032642A - Vernier type multipurpose drafting instrument - Google Patents
Vernier type multipurpose drafting instrument Download PDFInfo
- Publication number
- CN1032642A CN1032642A CN 88106920 CN88106920A CN1032642A CN 1032642 A CN1032642 A CN 1032642A CN 88106920 CN88106920 CN 88106920 CN 88106920 A CN88106920 A CN 88106920A CN 1032642 A CN1032642 A CN 1032642A
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- protractor
- vernier
- compass
- angle
- plotter
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- Drawing Aids And Blackboards (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
A kind of vernier type multipurpose drafting instrument is characterized in that a vernier protractor of representing angle between compass leg is established in the hinged place of two compass legs.The angulation partial volume is little, have sufficient accuracy, angulation scope and eye-catching graduation mark simultaneously, make the volume of whole plotter very little, use flexibly, be more suitable for saving manufactured materials in carrying, cost is low, having possessed multiple functions such as fairly perfect compasses, protractor, rule and set square, is more satisfactory portable plotter.
Description
The present invention is a kind of vernier type multipurpose drafting instrument.
For integrated several plotters such as compasses, protractor, rule and set squares, people design multiple portable plotter, for example application for a patent for invention No. 85105125,86 No. 100341 and utility application No. 86202327, No. 86204812 etc.Its essential structure and principle are that compasses combine with protractor, represent angle between chi formula compass leg with the scale method of common protractor.Oneself has technology to have a basic shortcoming for these, be that compasses and protractor can not combine well, if angulation partly has the accuracy and the angulation scope of common protractor, volume is inevitable bigger, make the volume of whole plotter bigger, the picture bowlder uses dumb, can not be more suitable in carrying, need more material manufacturing, cost is higher; If the volume of reduction volume angle part then can't due graduation mark of the common protractor of mint-mark and reading, can not possess complete angle measuring function.As for the method for mark angle on the crossfoot on compass leg or the compass leg, accuracy and angulation scope are also very limited, not as common protractor.Therefore, how compasses and protractor being combined rightly, is the key of designing more satisfactory portable plotter.
The present invention provides a kind of vernier type multipurpose drafting instrument for addressing the above problem.
Vernier type multipurpose drafting instrument is made up of compasses, rule and vernier protractor.Vernier protractor belongs to fine measuring instrument, but accuracy with common protractor when identical, its volume can dwindle significantly, this portable just plotter is needed.Feature of the present invention is to establish the vernier protractor of angle between an expression compass leg in the hinged place of two compass legs.Can be with the hinge portion of two compass legs respectively as the main scale and the secondary chi of vernier protractor; Also can mix angle scale, form main scale or secondary chi at the hinge portion of compass leg; Preferably mix the moving angle scale of adjustable turn over, calibration easily, conveniently.The hinge portion of compass leg can be disc or partial circle dish type.Preferably 1 ° or 0.5 ° of the accuracy of vernier protractor.
The angulation partial volume of this vernier type multipurpose drafting instrument is little, have enough accuracy, angulation scope and eye-catching graduation mark simultaneously, make the volume of whole plotter very little, use flexibly, be more suitable for saving manufactured materials in carrying, cost is low, having possessed multiple functions such as fairly perfect compasses, protractor, rule and set square, is more satisfactory portable plotter.
Elaborate below in conjunction with the embodiment in the accompanying drawing.
Fig. 1 is a front view.
Fig. 2 is a decomposing schematic representation.
Fig. 3 is the schematic diagram when making with transparent material.
Fig. 4 is a schematic diagram of representing the angle of both direction with vernier protractor.
In each figure, 1,3～compass leg, 2～angle scale, 4～compass shaft, 5～compasses handle, 6～rule pin slide block, the main part of the thin propelling pencil of 7～pulsating.
With reference to Fig. 1, Fig. 2, the integrated disc portions of chi formula compass leg 1 studs with angle scale 2, as the main scale of vernier protractor.The disk indentation, there roundel of compass leg 3 (using the transparent material manufacturing, needn't be jagged) is as the secondary chi of vernier protractor.On the bottom surface of transparent compass shaft 4, center " ten " word or central point are arranged, expression vernier protractor center.The scale of angle scale 2 is 10 ° of every lattice, uses numeral.The scale of secondary chi is 9 ° of every lattice, totally 10 lattice.The every lattice of major-minor chi differ 1 °, use numeral on secondary chi.Secondary chi zero graduation line is with main scale graduation mark 1 or 2,3 ... alignment is represented 10 ° or 20 °, 30 ° If secondary chi zero graduation line between main scale graduation mark 1 and 2, sub scale line 1 or 2,3 simultaneously ... with the alignment of main scale graduation mark, then represent 11 ° or 12 °, 13 ° ...All the other angles, the rest may be inferred.This vernier protractor volume is little, and accuracy is identical with the bigger common protractor of appearance and size, and graduation mark is eye-catching.When compass leg merged, the reading of vernier protractor should be zero, otherwise can dial the hole on the angle scale 2 by the hole on the disk of compass leg 1, calibrated.During angulation, allow the summit at vernier protractor centrally aligned angle, the inboard both sides with the angle of two compass legs overlap.Compass leg is drawn back needed angle, just can replace set square and ruler to use.
With reference to Fig. 3, Fig. 4, shown in the figure be the hinge portion of two compass legs respectively as the main scale and the secondary chi of vernier protractor, the vernier protractor of composition.Angle AOB among Fig. 4 is 111 °, and its exterior angle BOC is 69 °.
Claims (4)
1. a vernier type multipurpose drafting instrument is made up of compasses, rule, the invention is characterized in, the vernier protractor of angle between an expression compass leg is established in the hinged place of two compass legs.
2. according to the described multipurpose plotter of claim 1, it is characterized in that the hinge portion of two compass legs is respectively as the main scale and the secondary chi of vernier protractor.
3. according to the described multipurpose plotter of claim 1, it is characterized in that the main scale of vernier protractor or secondary chi are made up of the hinge portion of compass leg and angle scale or the moving angle scale of adjustable turn over.
4. according to claim 1,2 and 3 described multipurpose plotters, it is characterized in that the accuracy of vernier protractor is 1 ° or 0.5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106920 CN1041611C (en) | 1988-09-22 | 1988-09-22 | Vernier type multipurpose drafting instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106920 CN1041611C (en) | 1988-09-22 | 1988-09-22 | Vernier type multipurpose drafting instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1032642A true CN1032642A (en) | 1989-05-03 |
| CN1041611C CN1041611C (en) | 1999-01-13 |
Family
ID=4834427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88106920 Expired - Fee Related CN1041611C (en) | 1988-09-22 | 1988-09-22 | Vernier type multipurpose drafting instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1041611C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353315A (en) * | 2011-07-20 | 2012-02-15 | 中建一局集团第三建筑有限公司 | Special inspection tool for stirrup hook and application method thereof |
| CN104913697A (en) * | 2015-07-01 | 2015-09-16 | 淮南矿业(集团)有限责任公司 | Protractor |
| CN111196103A (en) * | 2019-12-11 | 2020-05-26 | 李永超 | Folding multifunctional ruler |
| CN113910816A (en) * | 2021-11-25 | 2022-01-11 | 田永恒 | Combined stationery convenient to use |
-
1988
- 1988-09-22 CN CN 88106920 patent/CN1041611C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353315A (en) * | 2011-07-20 | 2012-02-15 | 中建一局集团第三建筑有限公司 | Special inspection tool for stirrup hook and application method thereof |
| CN102353315B (en) * | 2011-07-20 | 2013-03-20 | 中建一局集团第三建筑有限公司 | Special inspection tool for stirrup hook and application method thereof |
| CN104913697A (en) * | 2015-07-01 | 2015-09-16 | 淮南矿业(集团)有限责任公司 | Protractor |
| CN111196103A (en) * | 2019-12-11 | 2020-05-26 | 李永超 | Folding multifunctional ruler |
| CN113910816A (en) * | 2021-11-25 | 2022-01-11 | 田永恒 | Combined stationery convenient to use |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1041611C (en) | 1999-01-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |