GB980580A - Drawing aid - Google Patents
Drawing aidInfo
- Publication number
- GB980580A GB980580A GB2883163A GB2883163A GB980580A GB 980580 A GB980580 A GB 980580A GB 2883163 A GB2883163 A GB 2883163A GB 2883163 A GB2883163 A GB 2883163A GB 980580 A GB980580 A GB 980580A
- Authority
- GB
- United Kingdom
- Prior art keywords
- slide
- bar
- lever
- slidable
- roller
- 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
- B43L13/24—Devices for generating stepwise movements of drawing equipment, e.g. for hatching
Landscapes
- Springs (AREA)
Abstract
980,580. Hatching devices. L. R. BLAKE. July 20, 1963, No. 28831/63. Heading B6P. The hatching unit comprises a main slide 3 slidable on a bar 9, a release slide 2 also slidable on the bar and urged to the right relative to the main slide by a compression spring 13, and a locking slide 1 slidable on the bar in response to a force exerted near to the bar, but locking on the bar if a force is exerted on it further from the bar. On depressing a lever 5 pivoted at 10, a roller 8 engages the slide 1 to lock the latter, whereupon the main slide is moved to the right against a compression spring 11 an extent determined by a stop-cam 7 adjusted by a sealed disc 6. On release of the lever 5, a spring 12 returns the lever to its initial position, the slide 1 being moved to the right against the slide 2 by the spring 11. Rotation of a disc 4 forces the release slide 2 to the left, moving the slide 1 along the bar out of contact with the roller 8, so that the slide is free to be moved in either direction, but the lever 5 can still be depressed so as to bring the roller 8 against the slide 1 to lock the device. Specification 978,582 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2883163A GB980580A (en) | 1963-07-20 | 1963-07-20 | Drawing aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2883163A GB980580A (en) | 1963-07-20 | 1963-07-20 | Drawing aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB980580A true GB980580A (en) | 1965-01-13 |
Family
ID=10281855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2883163A Expired GB980580A (en) | 1963-07-20 | 1963-07-20 | Drawing aid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB980580A (en) |
-
1963
- 1963-07-20 GB GB2883163A patent/GB980580A/en not_active Expired
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