GB328256A - Improvements relating to salmon passes or ladders - Google Patents

Improvements relating to salmon passes or ladders

Info

Publication number
GB328256A
GB328256A GB2126/29A GB212629A GB328256A GB 328256 A GB328256 A GB 328256A GB 2126/29 A GB2126/29 A GB 2126/29A GB 212629 A GB212629 A GB 212629A GB 328256 A GB328256 A GB 328256A
Authority
GB
United Kingdom
Prior art keywords
passes
ladders
pools
steps
merging
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
GB2126/29A
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.)
THOMAS ROOK
Original Assignee
THOMAS ROOK
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 THOMAS ROOK filed Critical THOMAS ROOK
Priority to GB2126/29A priority Critical patent/GB328256A/en
Publication of GB328256A publication Critical patent/GB328256A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
    • E02B8/08—Fish passes or other means providing for migration of fish; Passages for rafts or boats
    • E02B8/085—Devices allowing fish migration, e.g. fish traps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/60—Ecological corridors or buffer zones

Abstract

328,256. Rook, T. Jan. 22, 1929. Fish ladders or passes.-A ladder or pass comprises a series of pools in stepped formation, the contour of the steps in longitudinal section merging in an even curve from the high end 13, to the low end 14. In transverse section, the step is curved in an arc or semicircle merging into a horizontal part. The pools 6 are substantially triangular with sloping walls 9 the steps 2 being adjacent to opposite sides 7, of the channel, so as to provide a descending water stream along the base of the triangle. Each pool at the intake end of the pass is provided with a floating sluice to control the flow of water.
GB2126/29A 1929-01-22 1929-01-22 Improvements relating to salmon passes or ladders Expired GB328256A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2126/29A GB328256A (en) 1929-01-22 1929-01-22 Improvements relating to salmon passes or ladders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2126/29A GB328256A (en) 1929-01-22 1929-01-22 Improvements relating to salmon passes or ladders

Publications (1)

Publication Number Publication Date
GB328256A true GB328256A (en) 1930-04-22

Family

ID=9734050

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2126/29A Expired GB328256A (en) 1929-01-22 1929-01-22 Improvements relating to salmon passes or ladders

Country Status (1)

Country Link
GB (1) GB328256A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2157243A2 (en) * 2008-08-22 2010-02-24 Kirchdorfer Fertigteilholding GmbH Organism displacing installation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2157243A2 (en) * 2008-08-22 2010-02-24 Kirchdorfer Fertigteilholding GmbH Organism displacing installation
EP2157243A3 (en) * 2008-08-22 2013-02-27 Kirchdorfer Fertigteilholding GmbH Organism displacing installation

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