CA1291648C - Culvert end structure - Google Patents
Culvert end structureInfo
- Publication number
- CA1291648C CA1291648C CA000532555A CA532555A CA1291648C CA 1291648 C CA1291648 C CA 1291648C CA 000532555 A CA000532555 A CA 000532555A CA 532555 A CA532555 A CA 532555A CA 1291648 C CA1291648 C CA 1291648C
- Authority
- CA
- Canada
- Prior art keywords
- culvert
- casing
- valve
- inlet
- end structure
- 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 - Lifetime
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
- E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Float Valves (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Culvert ends are commonly dammed by beavers, especially if water dribbles out of the culverts in small quantities. The problem is solved by means of a culvert end structure defined by an L-shaped tube connected to the inlet end of a culvert and containing an inlet opening in one side thereof; a valve normally closing the opening; a tubular rod carrying the valve; and a pair of floats connected to the rod by arms above the valve for moving the valve upwardly when the water level at the inlet end of the culvert rises above a predetermined level.
Culvert ends are commonly dammed by beavers, especially if water dribbles out of the culverts in small quantities. The problem is solved by means of a culvert end structure defined by an L-shaped tube connected to the inlet end of a culvert and containing an inlet opening in one side thereof; a valve normally closing the opening; a tubular rod carrying the valve; and a pair of floats connected to the rod by arms above the valve for moving the valve upwardly when the water level at the inlet end of the culvert rises above a predetermined level.
Description
~ ~19~
This invention relates to a culvert end structure, and in particular to a float operated valve for use on a culvert end.
A common problem in northern locals is the damming of culverts by beavers. Culverts extending through mounds of earth or other structures such as beaver dams usually carry small quantities of water, i.e. dribbles. It is usual for a beaver to block the culvert to prevent the flow of dribbles. One solution to the problem is to provide grates over the ends of the culverts.
However, when grates are used, it is necessary to maintain the culverts on a more or less constant basis, i.e. frequently to remove debris from the ends of the culvert.
The object of the present invention is to overcome the above stated disadvantage of existing culvert guards by providing a relatively simple culvert end structure which prevents dribbling and which renders a culvert less likely to damming by a beaver.
Accordingly, the present invention relates to a culvert end structure comprising casing means for mounting on an inlet end of a culvert pipe so that said casing extends vertically upwardly from the inlet end of the culvert pipe, inlet means in one side of said casing means for admitting water into said pipe means for discharge through the culvert pipe; valve means slidable in said casing means normally closing said inlet means; float means connected to said valve means for lifting said valve means when the water at the inlet end of the culvert pipe rises above a ~k ~91648 predetermined level, whereby water is discharged from the culvert pipe at intervals in relatively large quantities rather than frequently in small quantities.
The invention will now be described in greater detail with reference to the accompanying drawings, which illustrate preferred embodiments of the invention, and wherein:
Figure 1 is a schematic side elevation view of a culvert end structure in accordance with the present invention mounted on a culvert;
Figure 2 is a side elevation view of the structure of Fig. 1, with parts removed;
Figure 3 is a cross section taken generally along line III-III of Fig. 2;
Figure 4 is a cross section taken generally along line IV-IV of Fig. 2; and Figure 5 is a sche~atic perspective view of a poxtion of a second embodiment of the invention.
With reference to Figs. 1 to 4, a culvert end structure in accordance with the present invention generally indicated at 1 is intended for use on one end 2 of a culvert 3 extending through a beaver dam 4 or other mound. The structure 1 includes a generally L-shaped casing 5. The horizontal arm 6 of the casing 5 is connected to the end 2 of the culvert 3 by a coupler 7. The coupler 7 i5 defined by a pair of C-sections pivotally interconnected at the bot~om by a hinge (not shown). The top end of each C-section ~9~8 includes a flange 8 for receiving bolts or screws (not shown) for connecting the sections together. The C-sections are ru~ber lined to provide a watertight seal between the culvert 3 and the end structure 1. The end structure 1 is supported above the bottom 10 of a beaver or other pond 11 by a post 12 and a bracket 13 similar in structure to the connector 8.
The vertical arm 15 of the casing S has an open top end, which is closed by a flange cover 16. An inlet opening 17 is provided in one side of the casing for admitting water into the casing from the pond 11. A cowl 18 protects the opening 17, preventing the entry of debris into the opening 17. The opening 17 is normally closed by a valve 19. The valve 19 is mounted on the bottom end of a tubular rod 20 for slidable movement in the vertical arm 15 of the casing. The rod 20 extends upwardly through an opening in the cover 16. Thus, the cover 16 acts as a guide to ensure that the valve 19 remains centralized in the vertical arm 15 of the casing. The lower limit of valve travel is deter-mined by an annular, radially inwardly extending flange 22 near the bottom end of the vertical arm 15 of the casing. The bottom end 24 of the valve 19 is hemispherical for seating centrally on the flange 22. Vertical movement of the valve 19 in the casing is controlled by a pair of floats 25. The floats 25 are mounted on the outer ends of arms 26, which extend outwardly and downwardly from opposite sides of the rod 20 above the valve 19.
The arms 26 project outwardly through longitudinally extending ~9~1 Çi4~3 slots 28 in the casing 5 so that the arms are free to move ver-tically in the casing.
With reference to Fig. 5, the second embodiment of the invention is similar to the first embodiment, and accordingly only the valve and float portions are shown. The device of Fig. 5 is intended for mounting in the vertical arm 15 of a casing of the type shown in Figs. 1 and 4.
The device of Fig. 5 includes a valve 30 mounted on the bottom end of a tubular rod 31. The rod 31 extends upwardly through a rectangular block 33, which is held in one position on the rod by a set screw (not shown). Similar, generally U-shaped brackets 34 are pivotally mounted on opposite sides of the block 33 for supporting arms 36 and floats 37. The inner ends 38 of the sides of the brackets 34 extend downwardly beyond the pivot points 40 of such brackets. A helical spring 41 extends between the bottom end of each pair of bracket sides on opposite sides of the block 33. Thus, the spring 41 controls rotation of the brackets 34 and the arms 36 around the pivot points 40, i.e. the springs 41 have a direct effect on the water level required to cause the floats 37 to rise. Whlle it is not readily apparent from Fig. 5, the valve 30 is larger in diameter than the block 33 and the brackets 34, so that the valve can slide freely in the casing 5.
The operation of the structure will be described with reference first to Figs. 1 to 4. When the water level in the pond ~?~91~a~
11 is sufficiently low, the valve 19 remains in the closed position (Fig. 3) blocking the inlet opening 17. When the water level rises sufficiently, the floats 25 cause the rod 20 and the valve 19 to move upwardly which permits the escape of water from the pond 11 through the opening 17, the horizontal arm 6 of the casing 5 and the culvert 3. The same action occurs with the embodiment of the invention illustrated in Fig. 5, the springs 41 retarding upward movement of the block 33, the rod 31 and the float 30.
It has been found that beavers tend to block small flows through culverts of the dribble-type, i.e. frequent or constant flows of small volumes of water more readily than large, infrequent flows of large quantities or slugs of water. Thus, by providing a culvert end structure which causes only the infrequent discharge of relatively large quantities of water, the likelihood of culvert damming is reduced or eliminated.
This invention relates to a culvert end structure, and in particular to a float operated valve for use on a culvert end.
A common problem in northern locals is the damming of culverts by beavers. Culverts extending through mounds of earth or other structures such as beaver dams usually carry small quantities of water, i.e. dribbles. It is usual for a beaver to block the culvert to prevent the flow of dribbles. One solution to the problem is to provide grates over the ends of the culverts.
However, when grates are used, it is necessary to maintain the culverts on a more or less constant basis, i.e. frequently to remove debris from the ends of the culvert.
The object of the present invention is to overcome the above stated disadvantage of existing culvert guards by providing a relatively simple culvert end structure which prevents dribbling and which renders a culvert less likely to damming by a beaver.
Accordingly, the present invention relates to a culvert end structure comprising casing means for mounting on an inlet end of a culvert pipe so that said casing extends vertically upwardly from the inlet end of the culvert pipe, inlet means in one side of said casing means for admitting water into said pipe means for discharge through the culvert pipe; valve means slidable in said casing means normally closing said inlet means; float means connected to said valve means for lifting said valve means when the water at the inlet end of the culvert pipe rises above a ~k ~91648 predetermined level, whereby water is discharged from the culvert pipe at intervals in relatively large quantities rather than frequently in small quantities.
The invention will now be described in greater detail with reference to the accompanying drawings, which illustrate preferred embodiments of the invention, and wherein:
Figure 1 is a schematic side elevation view of a culvert end structure in accordance with the present invention mounted on a culvert;
Figure 2 is a side elevation view of the structure of Fig. 1, with parts removed;
Figure 3 is a cross section taken generally along line III-III of Fig. 2;
Figure 4 is a cross section taken generally along line IV-IV of Fig. 2; and Figure 5 is a sche~atic perspective view of a poxtion of a second embodiment of the invention.
With reference to Figs. 1 to 4, a culvert end structure in accordance with the present invention generally indicated at 1 is intended for use on one end 2 of a culvert 3 extending through a beaver dam 4 or other mound. The structure 1 includes a generally L-shaped casing 5. The horizontal arm 6 of the casing 5 is connected to the end 2 of the culvert 3 by a coupler 7. The coupler 7 i5 defined by a pair of C-sections pivotally interconnected at the bot~om by a hinge (not shown). The top end of each C-section ~9~8 includes a flange 8 for receiving bolts or screws (not shown) for connecting the sections together. The C-sections are ru~ber lined to provide a watertight seal between the culvert 3 and the end structure 1. The end structure 1 is supported above the bottom 10 of a beaver or other pond 11 by a post 12 and a bracket 13 similar in structure to the connector 8.
The vertical arm 15 of the casing S has an open top end, which is closed by a flange cover 16. An inlet opening 17 is provided in one side of the casing for admitting water into the casing from the pond 11. A cowl 18 protects the opening 17, preventing the entry of debris into the opening 17. The opening 17 is normally closed by a valve 19. The valve 19 is mounted on the bottom end of a tubular rod 20 for slidable movement in the vertical arm 15 of the casing. The rod 20 extends upwardly through an opening in the cover 16. Thus, the cover 16 acts as a guide to ensure that the valve 19 remains centralized in the vertical arm 15 of the casing. The lower limit of valve travel is deter-mined by an annular, radially inwardly extending flange 22 near the bottom end of the vertical arm 15 of the casing. The bottom end 24 of the valve 19 is hemispherical for seating centrally on the flange 22. Vertical movement of the valve 19 in the casing is controlled by a pair of floats 25. The floats 25 are mounted on the outer ends of arms 26, which extend outwardly and downwardly from opposite sides of the rod 20 above the valve 19.
The arms 26 project outwardly through longitudinally extending ~9~1 Çi4~3 slots 28 in the casing 5 so that the arms are free to move ver-tically in the casing.
With reference to Fig. 5, the second embodiment of the invention is similar to the first embodiment, and accordingly only the valve and float portions are shown. The device of Fig. 5 is intended for mounting in the vertical arm 15 of a casing of the type shown in Figs. 1 and 4.
The device of Fig. 5 includes a valve 30 mounted on the bottom end of a tubular rod 31. The rod 31 extends upwardly through a rectangular block 33, which is held in one position on the rod by a set screw (not shown). Similar, generally U-shaped brackets 34 are pivotally mounted on opposite sides of the block 33 for supporting arms 36 and floats 37. The inner ends 38 of the sides of the brackets 34 extend downwardly beyond the pivot points 40 of such brackets. A helical spring 41 extends between the bottom end of each pair of bracket sides on opposite sides of the block 33. Thus, the spring 41 controls rotation of the brackets 34 and the arms 36 around the pivot points 40, i.e. the springs 41 have a direct effect on the water level required to cause the floats 37 to rise. Whlle it is not readily apparent from Fig. 5, the valve 30 is larger in diameter than the block 33 and the brackets 34, so that the valve can slide freely in the casing 5.
The operation of the structure will be described with reference first to Figs. 1 to 4. When the water level in the pond ~?~91~a~
11 is sufficiently low, the valve 19 remains in the closed position (Fig. 3) blocking the inlet opening 17. When the water level rises sufficiently, the floats 25 cause the rod 20 and the valve 19 to move upwardly which permits the escape of water from the pond 11 through the opening 17, the horizontal arm 6 of the casing 5 and the culvert 3. The same action occurs with the embodiment of the invention illustrated in Fig. 5, the springs 41 retarding upward movement of the block 33, the rod 31 and the float 30.
It has been found that beavers tend to block small flows through culverts of the dribble-type, i.e. frequent or constant flows of small volumes of water more readily than large, infrequent flows of large quantities or slugs of water. Thus, by providing a culvert end structure which causes only the infrequent discharge of relatively large quantities of water, the likelihood of culvert damming is reduced or eliminated.
Claims (6)
1. A culvert end structure comprising casing means for mounting on an inlet end of a culvert pipe so that said casing means extends vertically upwardly from the inlet end of the culvert pipe, inlet means in one side of said casing means for admitting water into said pipe means for discharge through the culvert pipe;
valve means slidable in said casing means normally closing said inlet means; float means connected to said valve means for lifting said valve means when the water inlet end of the culvert pipe rises above a predetermined level, whereby water is discharged from the culvert pipe at intervals in relatively large quantities rather than frequently in small quantities.
valve means slidable in said casing means normally closing said inlet means; float means connected to said valve means for lifting said valve means when the water inlet end of the culvert pipe rises above a predetermined level, whereby water is discharged from the culvert pipe at intervals in relatively large quantities rather than frequently in small quantities.
2. A culvert end structure according to claim 1 wherein said valve means includes plug means for normally blocking said inlet means; and tube means extending through and carrying said plug means for equalizing air pressure above and below said plug means.
3. A culvert end structure according to claim 2, wherein said float means includes arm means connected to said tube means and extending outwardly through said casing means, and a float body on the external end of said arm means.
4. A culvert end structure according to claim 3, including vertical slot means in opposite sides of said casing means;
and arms extending outwardly from said tube means through said slot means, a float body being mounted on the outer free end of each said arm.
and arms extending outwardly from said tube means through said slot means, a float body being mounted on the outer free end of each said arm.
5. A culvert end structure according to claim 2, 3 or 4, including seat means in said casing means for limiting downward movement of said plug means in the casing means to ensure that said plug means normally closes said inlet means.
6. A culvert end structure according to claim 3, including block means on said tube means above said plug means for vertical movement with said valve means; bracket means pivotally connecting said arm means to said block means; and spring means for retarding upward movement of said float body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000532555A CA1291648C (en) | 1987-03-23 | 1987-03-23 | Culvert end structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000532555A CA1291648C (en) | 1987-03-23 | 1987-03-23 | Culvert end structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1291648C true CA1291648C (en) | 1991-11-05 |
Family
ID=4135231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000532555A Expired - Lifetime CA1291648C (en) | 1987-03-23 | 1987-03-23 | Culvert end structure |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1291648C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9016321B1 (en) | 2014-02-26 | 2015-04-28 | Jim Champlone | Deployable culvert plug system |
| RU2585042C1 (en) * | 2015-02-26 | 2016-05-27 | Михаил Иванович Голубенко | Drain manifold head |
| US9416908B2 (en) | 2014-02-26 | 2016-08-16 | James Richard CHAMPLONE | Deployable plug system |
-
1987
- 1987-03-23 CA CA000532555A patent/CA1291648C/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9016321B1 (en) | 2014-02-26 | 2015-04-28 | Jim Champlone | Deployable culvert plug system |
| US9416908B2 (en) | 2014-02-26 | 2016-08-16 | James Richard CHAMPLONE | Deployable plug system |
| RU2585042C1 (en) * | 2015-02-26 | 2016-05-27 | Михаил Иванович Голубенко | Drain manifold head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |