GB738223A - Drawing instrument - Google Patents
Drawing instrumentInfo
- Publication number
- GB738223A GB738223A GB1826953A GB1826953A GB738223A GB 738223 A GB738223 A GB 738223A GB 1826953 A GB1826953 A GB 1826953A GB 1826953 A GB1826953 A GB 1826953A GB 738223 A GB738223 A GB 738223A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- edge
- circular
- interval
- instrument
- 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
Landscapes
- Adornments (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
738,223. Drawing instruments. STARZYNSKI, S., and TRAVERS, M. July 1, 1954 [July 1, 1953], No. 18269/53. Class 97 (3). A drawing instrument comprises a body with at least one straight edge and, rotatably mounted on the body, an arm or like member having spaced holes therein and means for holding it in a fixed angular position. As shown in Fig. 1, the body 1 and arm 2 are made of transparent plastic. The edges 3, 4 of the body are both sealed. The arm 2 has a circular end portion 5 with a V-shaped peripheral groove interfitting with the edge of a socket in body 1. The socket is non-circular so as to pinch the portion 5 slightly to hold arm 2 in its set position. To draw a set of parallel lines, a pencil or stylus is placed in holes 6 in arm 2, and the instrument is slid with edge 3 held against a straight edge. The interval between the lines is adjusted by turning arm 2, using scales 7a, 7 which indicate the interval directly in inches and centimetres respectively. An angle scale 8 permits the instrument to be used as a protractor. To facilitate sliding, and to enable a pen to be used, the body and arm have a raised rib 10 and protuberances 9 on their under surfaces. In Fig. 2, a set-square is shown in which is mounted, in a circular recess in the base 11, a rotatable member 12 formed as a major segment of a circle. The recess 11 also accommodates a locking member 14. Member 12 has holes 16 for drawing parallel lines and the body has scales 17a, 17b for setting the interval. A slot 19 in member 12 may be set in conjunction with an angular scale 20 for drawing lines at any angle with respect to the edge of the set-square. According to the Provisional Specification, member 12 may be circular and looked by a screw.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1826953A GB738223A (en) | 1953-07-01 | 1953-07-01 | Drawing instrument |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1826953A GB738223A (en) | 1953-07-01 | 1953-07-01 | Drawing instrument |
Publications (1)
Publication Number | Publication Date |
---|---|
GB738223A true GB738223A (en) | 1955-10-12 |
Family
ID=10109553
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1826953A Expired GB738223A (en) | 1953-07-01 | 1953-07-01 | Drawing instrument |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB738223A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2136736A (en) * | 1983-03-26 | 1984-09-26 | David Charles Lambert Griew | Drawing aid |
GB2208720A (en) * | 1987-07-22 | 1989-04-12 | Huey Bao Co Ltd | A student's multi-function protractor |
GB2272531A (en) * | 1992-11-17 | 1994-05-18 | Paul Dennis Evatt | Angle measuring device |
-
1953
- 1953-07-01 GB GB1826953A patent/GB738223A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2136736A (en) * | 1983-03-26 | 1984-09-26 | David Charles Lambert Griew | Drawing aid |
GB2208720A (en) * | 1987-07-22 | 1989-04-12 | Huey Bao Co Ltd | A student's multi-function protractor |
GB2272531A (en) * | 1992-11-17 | 1994-05-18 | Paul Dennis Evatt | Angle measuring device |
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