GB138275A - Improvements in dry pipe valves for automatic sprinkler systems - Google Patents
Improvements in dry pipe valves for automatic sprinkler systemsInfo
- Publication number
- GB138275A GB138275A GB1950119A GB1950119A GB138275A GB 138275 A GB138275 A GB 138275A GB 1950119 A GB1950119 A GB 1950119A GB 1950119 A GB1950119 A GB 1950119A GB 138275 A GB138275 A GB 138275A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- arm
- counterweight
- rest
- frame
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
138,275. Imray, O., (Meadoweroft, J. C.). Aug. 7, 1919. Sprinklers, automatic.-In a dry-pipe valve of the differential type, the valve 25 is carried by an arm 30 pivoted at 32 and connected by a pivoted link 37 to a counterweight 35, which normally bears against a rest-frame 40 rigidly carried by the arm 30, and is adapted, after the valve 25 has opened slightly, to fall and cause the link 37 to strike a lug 33 on the arm 30, thus accelerating the opening of the valve. A gravity pawl 50 adapted to engage teeth 41 on the rest-frame 40 prevents the valve closing after it has partly opened. The counterweight 35 is reset to normal position by means of a pull-rod 70. The valve 25 is provided with a shoulder 26 engaging the water seat 6 and with a flexible valvular ring 27 of rubber &c. at the edge engaging a recessed seat 7 to prevent escape of the compressed air. The valve 25 is journaled in the arm 30 in such a way as to have a certain amount of free axial movement; and undue rocking is prevented by means of the downwardly-curved end of the arm 30 together with a correspondingly-curved concentric rib 17 on the underside of the arm. A drip-outlet valve. 82 is normally held open by means of a weighted lever 81 engaged by the valve 25 when closed, and is adapted to close by gravity as soon as the valve 25 begins to open.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1950119A GB138275A (en) | 1919-08-07 | 1919-08-07 | Improvements in dry pipe valves for automatic sprinkler systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1950119A GB138275A (en) | 1919-08-07 | 1919-08-07 | Improvements in dry pipe valves for automatic sprinkler systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB138275A true GB138275A (en) | 1920-02-05 |
Family
ID=10130403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1950119A Expired GB138275A (en) | 1919-08-07 | 1919-08-07 | Improvements in dry pipe valves for automatic sprinkler systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB138275A (en) |
-
1919
- 1919-08-07 GB GB1950119A patent/GB138275A/en not_active Expired
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