GB189526A - Improvements in road barriers for stopping vehicles - Google Patents
Improvements in road barriers for stopping vehiclesInfo
- Publication number
- GB189526A GB189526A GB2301721A GB2301721A GB189526A GB 189526 A GB189526 A GB 189526A GB 2301721 A GB2301721 A GB 2301721A GB 2301721 A GB2301721 A GB 2301721A GB 189526 A GB189526 A GB 189526A
- Authority
- GB
- United Kingdom
- Prior art keywords
- weight
- chains
- stopping
- support
- travel
- 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
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L29/00—Safety means for rail/road crossing traffic
- B61L29/02—Guards or obstacles for preventing access to the route
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
189,526. Strauss, J. B. Aug. 30, 1921. Energy-absorbing elements.- A road barrier for gradually stopping vehicles comprises an impact-receiving part 3 connected to primary and secondary retarding-mechanisms acting in succession. The part 3, consisting of flexible cables, &c., is connected to chains 5 which pass through spacers 4 guided on the supports 1. Each spacer is connected by a chain 13 to the driving-wheel 15 of a motor 17 located at 18 in the base of the support, so as to raise or lower the barrier. The chains 5 pass over pulleys 6 on the support and pulleys 7 on a weight 8 constituting the primary means for stopping the vehicle. The weight 8 in its travel engages the secondary friction device 11 which may produce a clamping effect increasing with the travel of the weight.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2301721A GB189526A (en) | 1921-08-30 | 1921-08-30 | Improvements in road barriers for stopping vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2301721A GB189526A (en) | 1921-08-30 | 1921-08-30 | Improvements in road barriers for stopping vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB189526A true GB189526A (en) | 1922-11-30 |
Family
ID=10188740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2301721A Expired GB189526A (en) | 1921-08-30 | 1921-08-30 | Improvements in road barriers for stopping vehicles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB189526A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2194819A (en) * | 1986-08-28 | 1988-03-16 | John Michael Southgate | Counterbalanced raisable barrier |
GB2248651A (en) * | 1990-09-26 | 1992-04-15 | Kenneth Marden Henfrey | Drive mechanism for traffic barriers |
-
1921
- 1921-08-30 GB GB2301721A patent/GB189526A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2194819A (en) * | 1986-08-28 | 1988-03-16 | John Michael Southgate | Counterbalanced raisable barrier |
GB2248651A (en) * | 1990-09-26 | 1992-04-15 | Kenneth Marden Henfrey | Drive mechanism for traffic barriers |
GB2248651B (en) * | 1990-09-26 | 1994-09-07 | Kenneth Marden Henfrey | Drive mechanism for vertically rotating beams/traffic barriers |
US5415055A (en) * | 1990-09-26 | 1995-05-16 | Sine Engineering Ltd. | Drive mechanism for a vertically rotating member |
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