DE155638C - - Google Patents
Info
- Publication number
- DE155638C DE155638C DENDAT155638D DE155638DA DE155638C DE 155638 C DE155638 C DE 155638C DE NDAT155638 D DENDAT155638 D DE NDAT155638D DE 155638D A DE155638D A DE 155638DA DE 155638 C DE155638 C DE 155638C
- Authority
- DE
- Germany
- Prior art keywords
- mercury
- locking
- barrier
- locking claw
- drive pulley
- 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.)
- Active
Links
- 210000000078 Claw Anatomy 0.000 claims description 13
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 13
- 229910052753 mercury Inorganic materials 0.000 claims description 13
- 230000000903 blocking Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 241001342895 Chorus Species 0.000 description 1
- 206010010219 Compulsions Diseases 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 230000001105 regulatory Effects 0.000 description 1
- 230000000717 retained Effects 0.000 description 1
- 230000001429 stepping Effects 0.000 description 1
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
- B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
- B61L29/28—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning electrically operated
- B61L29/30—Supervision, e.g. monitoring arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE155638C true DE155638C (it) |
Family
ID=422090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT155638D Active DE155638C (it) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE155638C (it) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2937787A (en) * | 1956-07-31 | 1960-05-24 | Richard O Taylor | Pipette dispenser |
-
0
- DE DENDAT155638D patent/DE155638C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2937787A (en) * | 1956-07-31 | 1960-05-24 | Richard O Taylor | Pipette dispenser |
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