GB631957A - Improvements in or relating to means for use in sealing air or gas passages and/or ducts - Google Patents

Improvements in or relating to means for use in sealing air or gas passages and/or ducts

Info

Publication number
GB631957A
GB631957A GB2956846A GB2956846A GB631957A GB 631957 A GB631957 A GB 631957A GB 2956846 A GB2956846 A GB 2956846A GB 2956846 A GB2956846 A GB 2956846A GB 631957 A GB631957 A GB 631957A
Authority
GB
United Kingdom
Prior art keywords
blades
members
asbestos
passageways
webs
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
Application number
GB2956846A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AIR CONTROL INSTALLATIONS Ltd
JOHN BURGIN
Original Assignee
AIR CONTROL INSTALLATIONS Ltd
JOHN BURGIN
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AIR CONTROL INSTALLATIONS Ltd, JOHN BURGIN filed Critical AIR CONTROL INSTALLATIONS Ltd
Priority to GB2956846A priority Critical patent/GB631957A/en
Publication of GB631957A publication Critical patent/GB631957A/en
Expired legal-status Critical Current

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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/165—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with a plurality of closure members

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

631,957. Hinged valves. AIR CONTROL INSTALLATIONS, Ltd., and BURGIN, J. Oct. 3, 1946, No. 29568. [Class 135] A butterfly-type valve for an air or gas conduit comprises a shaft 21 encircled by, and secured to, a tube 27 and rotatably mounted in bearings in the sides of the duct, rigid blades 13, 15 extending tangentially from the ends of a diameter of the tube, and rigid ledges 53, 57 constituting sealing abutments which are secured in parallel planes to the inner walls of the conduit and are spaced apart by an amount corresponding to the diametral separation of the blades. In the embodiment shown, a single rectangular passage is divided by a central partition 25 into two passageways, each of which is provided with a valve. The blades can be swung into the open position shown in dot-and-dash lines. The sealing abutments comprise U-shaped members bolted to the sides of the passageways and covered by asbestos cloth 55. In a modification, asbestos fabric is interposed between the members 53 and the walls to which they are attached, and the edges of the members 53 on which the blades 13, 15 seat are provided with blocks of asbestos encased in silicon rubber and gripped by channel members. When the gas being controlled is of a dusty nature, an aperture in the partition 25 permits any dust accumulating to be blown away. The blades 13, 15 are braced by webs 63, and steel sheets may be fitted over the webs to minimize flow losses.
GB2956846A 1946-10-03 1946-10-03 Improvements in or relating to means for use in sealing air or gas passages and/or ducts Expired GB631957A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2956846A GB631957A (en) 1946-10-03 1946-10-03 Improvements in or relating to means for use in sealing air or gas passages and/or ducts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2956846A GB631957A (en) 1946-10-03 1946-10-03 Improvements in or relating to means for use in sealing air or gas passages and/or ducts

Publications (1)

Publication Number Publication Date
GB631957A true GB631957A (en) 1949-11-14

Family

ID=10293572

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2956846A Expired GB631957A (en) 1946-10-03 1946-10-03 Improvements in or relating to means for use in sealing air or gas passages and/or ducts

Country Status (1)

Country Link
GB (1) GB631957A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946554A (en) * 1956-06-13 1960-07-26 Desomatic Products Inc Butterfly valve
US3269414A (en) * 1963-12-09 1966-08-30 Atlantic Res Corp Multi-port flow-control valve
US3604458A (en) * 1969-02-13 1971-09-14 Modine Mfg Co Temperature compensating damper structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946554A (en) * 1956-06-13 1960-07-26 Desomatic Products Inc Butterfly valve
US3269414A (en) * 1963-12-09 1966-08-30 Atlantic Res Corp Multi-port flow-control valve
US3604458A (en) * 1969-02-13 1971-09-14 Modine Mfg Co Temperature compensating damper structure

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