GB413943A - Angle-measuring and drawing instrument - Google Patents
Angle-measuring and drawing instrumentInfo
- Publication number
- GB413943A GB413943A GB33988/33A GB3398833A GB413943A GB 413943 A GB413943 A GB 413943A GB 33988/33 A GB33988/33 A GB 33988/33A GB 3398833 A GB3398833 A GB 3398833A GB 413943 A GB413943 A GB 413943A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rollers
- pair
- plate
- instrument
- protractor
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L7/00—Straightedges
- B43L7/005—Straightedges combined with other drawing aids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/001—Mathematical drawing instruments
- B43L13/002—Angle intersecting devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L7/00—Straightedges
- B43L7/04—Straightedges with rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L7/00—Straightedges
- B43L7/08—Straightedges with arrangements for attaching additional drawing equipment, e.g. for hatching, dotting
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C1/00—Measuring angles
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mechanical Engineering (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
413,943. Drawing-instruments. BADE, (nÚe NIETHAMMER), A., Oppendorfer Forsthaus, Schoenkirchan, Holstein, Germany. Dec. 4, 1933, No. 33988. Convention date, Jan. 13. [Class 97 (iii).] An instrument for drawing, hatching, measuring angles or for use with navigational charts has two pairs of rollers adapted to run in directions at right angles, one pair of rollers being lifted from the drawing surface when the other pair is depressed, and vice versa, and all or part of the remaining parts of the instrument being raised from the drawing surface upon depression of a pair of rollers. In the form shown, a flexible rule 1 which may have a leg 15 is attached to the bridge of a semicircular protractor 2. A plate 5 for carrying the rollers is slid over eye brackets 4, 4, on the bridge by means of corresponding oblong slots and is pivotally attached thereto by eye brackets 6, 6 and bolts 7, a space being left between the protractor and plate 5 so that the latter may see-saw about the bolts 7. The plate 5 carries a pair of rollers 9, 9 with their axle 11 mounted in bearing brackets 10 and a pair of rollers 12, 12 adapted to run in a direction at right angles to the rollers 9, 9, and each mounted on a journal 16 supported by a bearing bracket 13. A handle 8 is provided on the plate 5, so that the latter may be tilted to bring either pair of rollers into contact with the chart and simultaneously to raise the instrument from the drawing surface. The protractor 2 may be so connected to the rule 1 as to be capable of angular adjustment.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE413943X | 1933-01-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB413943A true GB413943A (en) | 1934-07-26 |
Family
ID=6445933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB33988/33A Expired GB413943A (en) | 1933-01-13 | 1933-12-04 | Angle-measuring and drawing instrument |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB413943A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1032125B (en) * | 1956-03-16 | 1958-06-12 | Chi Liang Cho | Drawing device |
GB2136736A (en) * | 1983-03-26 | 1984-09-26 | David Charles Lambert Griew | Drawing aid |
FR2600413A1 (en) * | 1986-06-18 | 1987-12-24 | Chapuis Gerard | Rule for aerial and maritime navigation |
-
1933
- 1933-12-04 GB GB33988/33A patent/GB413943A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1032125B (en) * | 1956-03-16 | 1958-06-12 | Chi Liang Cho | Drawing device |
GB2136736A (en) * | 1983-03-26 | 1984-09-26 | David Charles Lambert Griew | Drawing aid |
FR2600413A1 (en) * | 1986-06-18 | 1987-12-24 | Chapuis Gerard | Rule for aerial and maritime navigation |
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