GB773932A - Apparatus for producing perspective drawings from plan view and elevation - Google Patents
Apparatus for producing perspective drawings from plan view and elevationInfo
- Publication number
- GB773932A GB773932A GB23547/55A GB2354755A GB773932A GB 773932 A GB773932 A GB 773932A GB 23547/55 A GB23547/55 A GB 23547/55A GB 2354755 A GB2354755 A GB 2354755A GB 773932 A GB773932 A GB 773932A
- Authority
- GB
- United Kingdom
- Prior art keywords
- point
- column
- plan
- adjustable
- graticule
- 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
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/14—Devices for drawing in perspective
- B43L13/147—Three-dimensional devices
Abstract
773,932. Perspective drawing-apparatus. FORSTER, F. Aug. 16, 1955 [Aug. 20, 1954], No. 23547/55. Class 97(3) ' Apparatus for producing perspective drawings from a plan view and an eleva tion comprises a fixed column 1 and a column 5 movable over the plan view at G, the latter column carrying a swivel joint in which a rod 4 is slidable through a point P vertically above a selected point'in the plan and which is adjustable in height to correspond to the position of the point in the elevation drawing carried for example on the drum 28 and as indicated by a pointer 27, the other end of the rod being carried in a swivel joint 3 supported by the column 1 and coincident with the centre C of the perspective projection through which a light beam is projected in the direction of the rod 2 td indicate the position P<SP>1</SP> of the selected point in the perspective view. In the form shown the joint 3 is carried on an arm 2 adjustable in 'height on the column 1. The joint supports a nozzle-like end of a casing 7 which contains a lens for projecting an image of a graticule and a lamp and condenser for illuminating the graticule. The graticule is adjustable for focusing by a knurled ring 19. The lamp is laterally adjustable by screws 24. The light beam may be projected directly on to the perspective drawing, being upright, or may be reflected downwardly from a mirror 8, angularly adjustable about the axis of the arm 2, on to the drawing at Z the plane of which mav be angularly adjustable about a hinge 9. The position of the projected point may be recorded photographically; the mirror 8 being at the apex of a light tight enclosure. The base 30 for the column 5 is convex in cross-section and chromium plated to assist sliding. It carries a glass plate or lens 31 with a graticule, for selecting a point in the plan, directly below the point P. The base may be transparent.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH773932X | 1954-08-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB773932A true GB773932A (en) | 1957-05-01 |
Family
ID=4535655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB23547/55A Expired GB773932A (en) | 1954-08-20 | 1955-08-16 | Apparatus for producing perspective drawings from plan view and elevation |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH324212A (en) |
DE (1) | DE966376C (en) |
FR (1) | FR1130141A (en) |
GB (1) | GB773932A (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB687936A (en) * | 1949-10-03 | 1953-02-25 | Halden & Company Ltd J | Apparatus for the construction of perspective drawings |
DE877832C (en) * | 1950-01-31 | 1953-05-26 | Phil Habil Otto Rellensmann Dr | Device for the construction of parallel or central perspective representations from a given floor plan |
-
1954
- 1954-08-20 CH CH324212D patent/CH324212A/en unknown
-
1955
- 1955-06-30 DE DEF17816A patent/DE966376C/en not_active Expired
- 1955-07-25 FR FR1130141D patent/FR1130141A/en not_active Expired
- 1955-08-16 GB GB23547/55A patent/GB773932A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE966376C (en) | 1957-08-01 |
FR1130141A (en) | 1957-01-31 |
CH324212A (en) | 1957-09-15 |
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