GB895291A - Improvements in foam-producing apparatus - Google Patents
Improvements in foam-producing apparatusInfo
- Publication number
- GB895291A GB895291A GB2839357A GB2839357A GB895291A GB 895291 A GB895291 A GB 895291A GB 2839357 A GB2839357 A GB 2839357A GB 2839357 A GB2839357 A GB 2839357A GB 895291 A GB895291 A GB 895291A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- cylinder
- piston
- pressure
- downstream
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/002—Apparatus for mixing extinguishants with water
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Lift Valve (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
895,291. Valves. PYRENE CO. Ltd. Sept. 5, 1958 [Sept. 9, 1957], No. 28393/57. Class 135. [Also in Group XXI] A fire-extinguishing foam-producing apparatus comprises a butterfly valve 10 controlling the flow of water to a pump 1 which is associated with a foam-stabilizing solution inductor 7 in circuit between the delivery side 2 and suction side 3 of the pump, and tappings upstream and downstream of the valve leading to opposite ends of a cylinder 13 containing a piston 12 mechanically connected to the valve 10, the area of the piston subjected to pressure through the upstream the tapping being less than that subjected to the pressure through the downstream tapping. If the pressure of the supply 5 is exceptionally high a valve 47 in a pipe 46 which runs frcm the cock 47 to the delivery line 12 may be opened and a valve (not shown) in the pipe 15 closed. In the form of the apparatus described, Fig. 2 (not shown), the spindle of the butterfly valve is connected to one end of a crank the other end of which is pivoted to the rod 33 of the piston 12 extending from one end of the cylinder 13 the other end of which is pivoted upon a hollow spindle which extends from the water pipe at a point downstream of the valve 10, and places the cylinder 13 in communication with the water stream at that point. Specification 772,604 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2839357A GB895291A (en) | 1957-09-09 | 1957-09-09 | Improvements in foam-producing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2839357A GB895291A (en) | 1957-09-09 | 1957-09-09 | Improvements in foam-producing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB895291A true GB895291A (en) | 1962-05-02 |
Family
ID=10274910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2839357A Expired GB895291A (en) | 1957-09-09 | 1957-09-09 | Improvements in foam-producing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB895291A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2144037A (en) * | 1983-07-22 | 1985-02-27 | Thomas Leslie Ashurst | Method of and apparatus for foam production |
-
1957
- 1957-09-09 GB GB2839357A patent/GB895291A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2144037A (en) * | 1983-07-22 | 1985-02-27 | Thomas Leslie Ashurst | Method of and apparatus for foam production |
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