GB658483A - Improvements in moving sign display devices - Google Patents
Improvements in moving sign display devicesInfo
- Publication number
- GB658483A GB658483A GB2846449A GB2846449A GB658483A GB 658483 A GB658483 A GB 658483A GB 2846449 A GB2846449 A GB 2846449A GB 2846449 A GB2846449 A GB 2846449A GB 658483 A GB658483 A GB 658483A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- suction
- piston
- cylinder
- driven
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
- G09F7/18—Means for attaching signs, plates, panels, or boards to a supporting structure
- G09F7/22—Means for attaching signs, plates, panels, or boards to a supporting structure for rotatably or swingably mounting, e.g. for boards adapted to be rotated by the wind
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
658,483. Vacuum engines. DICKSON, C. F. Nov. 7, 1949. No. 28464. [Class 122(iii)] [Also in Group XVIII] A suction motor for a changing display sign (see Group XVIII) is driven from the induction manifold of a vehicle engine and comprises a cylinder 16 which is connected to a suction source by a port 17<SP>1</SP> and which contains a piston 17 connected to a pivoted arm 19 with which the sign is driven. The piston is urged in one direction by a spring 21 which is compressed when suction is applied to the cylinder. The cylinder contains an exhaust valve 23 closed by a spring 28 and which has a telescopic stem 30 extended by a spring 29. When suction is applied to the cylinder the piston in its travel engages the stem 30 and compresses its spring 29 until the spring 28 and the suction pressure on the valve head are overcome. The piston then returns under the pressure of spring 21, the closing of the valve being delayed until spring 29 which is stronger than spring 28 is fully extended.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2846449A GB658483A (en) | 1949-11-07 | 1949-11-07 | Improvements in moving sign display devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2846449A GB658483A (en) | 1949-11-07 | 1949-11-07 | Improvements in moving sign display devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB658483A true GB658483A (en) | 1951-10-10 |
Family
ID=10276039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2846449A Expired GB658483A (en) | 1949-11-07 | 1949-11-07 | Improvements in moving sign display devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB658483A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993011522A1 (en) * | 1991-12-05 | 1993-06-10 | Promocion Del Deporte, S.A. | Machine for exhibiting publicity |
| CN115163721A (en) * | 2022-06-28 | 2022-10-11 | 上海保隆汽车科技(安徽)有限公司 | Base for air spring, air spring and suspension system |
-
1949
- 1949-11-07 GB GB2846449A patent/GB658483A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993011522A1 (en) * | 1991-12-05 | 1993-06-10 | Promocion Del Deporte, S.A. | Machine for exhibiting publicity |
| CN115163721A (en) * | 2022-06-28 | 2022-10-11 | 上海保隆汽车科技(安徽)有限公司 | Base for air spring, air spring and suspension system |
| CN115163721B (en) * | 2022-06-28 | 2024-03-12 | 上海保隆汽车科技(安徽)有限公司 | Base for air spring, air spring and suspension system |
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