GB523651A - Improvements relating to automatic gate opening devices - Google Patents
Improvements relating to automatic gate opening devicesInfo
- Publication number
- GB523651A GB523651A GB3438737A GB3438737A GB523651A GB 523651 A GB523651 A GB 523651A GB 3438737 A GB3438737 A GB 3438737A GB 3438737 A GB3438737 A GB 3438737A GB 523651 A GB523651 A GB 523651A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gate
- movement
- treadle
- plate
- transmitted
- 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
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F13/00—Mechanisms operated by the movement or weight of a person or vehicle
- E05F13/04—Mechanisms operated by the movement or weight of a person or vehicle by platforms lowered by the weight of the user
Landscapes
- Vehicle Step Arrangements And Article Storage (AREA)
Abstract
523,651. Gate-operating appliances. CRAIG, G. L. Jan. 11, 1939, No. 34387/37. [Class 65 (i)] A gate is actuated by a vehicle which tilts the pivotal axis of the gate, so that the gate moves by gravity. The vehicle wheels depress a treadle 42 or 44, one on each side of the gate, and this movement of the treadle is transmitted by a rod 46 or 48 to a plate 24 pivoted at 32 and provided with two arcuate slots 36, 38 engaged by two pins 20, 22 on the gate. During the movement of the plate 24, the gate is positively swung, the next part of its movement is effected by gravity owing to tilting of the hinge axis, and the remainder of its movement is due to momentum. The treadle is returned to normal by a spring 70 which is compressed during the depression of the treadle by the sliding movement of sleeves 64 having cam engagement with fixed sleeves 58. To prevent immediate reversal of the plate 24 when the treadle returns, the movement of the latter is transmitted to 24 by a lost-motion device 74 comprising two cylinders having pin slot connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3438737A GB523651A (en) | 1939-01-11 | 1939-01-11 | Improvements relating to automatic gate opening devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3438737A GB523651A (en) | 1939-01-11 | 1939-01-11 | Improvements relating to automatic gate opening devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB523651A true GB523651A (en) | 1940-07-19 |
Family
ID=10365015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3438737A Expired GB523651A (en) | 1939-01-11 | 1939-01-11 | Improvements relating to automatic gate opening devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB523651A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2538227A (en) * | 2015-04-28 | 2016-11-16 | Westcotec Ltd | Automated road barriers |
-
1939
- 1939-01-11 GB GB3438737A patent/GB523651A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2538227A (en) * | 2015-04-28 | 2016-11-16 | Westcotec Ltd | Automated road barriers |
| GB2538227B (en) * | 2015-04-28 | 2019-12-04 | Westcotec Ltd | Automated road barriers |
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