US1999637A - Screen for use in waterways - Google Patents

Screen for use in waterways Download PDF

Info

Publication number
US1999637A
US1999637A US731153A US73115334A US1999637A US 1999637 A US1999637 A US 1999637A US 731153 A US731153 A US 731153A US 73115334 A US73115334 A US 73115334A US 1999637 A US1999637 A US 1999637A
Authority
US
United States
Prior art keywords
screen
bars
rods
locking
block
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
Application number
US731153A
Inventor
Frank R Pettepher
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US731153A priority Critical patent/US1999637A/en
Application granted granted Critical
Publication of US1999637A publication Critical patent/US1999637A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
    • E02B1/006—Arresting, diverting or chasing away fish in water-courses or water intake ducts, seas or lakes, e.g. fish barrages, deterrent devices ; Devices for cleaning fish barriers

Definitions

  • the primary object of the present invention is the provision of a screen mounted for swinging movement on the bed of the waterway and normally locked in a position to project above the surface of the stream to ordinarily prevent the passage of fish or the like past the screen; the locking means being adjustable to maintain the screen against movement except under predetermined pressure against the screen, whereupon under such pressure the screen is'automatically released and permitted to move to a position to free the obstruction, with means for automatically returning the'screen when free of such pressure to an operative position within the influence of the locking means for further normal service.
  • Figure 1 is a perspective view showing the improvement.
  • Figure 2 is a vertical sectional view through the screen, showing the mounting.
  • Figure 3 is a broken elevation, partly in section, of the same.
  • Figure 4 is an elevation showing the means for stopping screen movement.
  • Figure 5 is a plan view showing a lock.
  • the screen proper includes a screen-like body 1 preferably constructed of bars of metal or.the like having a length to project above the surface of the body of water, indicated at 2, when in operative position.
  • the lower ends of the bars making up the screen I are secured to a shaft 3 supported in bearings 4 carried by a foundation block 5 appropriately anchored on the bed of the stream.
  • a shield 6 is secured to the foundation block 5 and partially surrounds and extends above the shaft 3, as indicated in Figure 2, to protect the shaft 3 and the connection of the screen bars thereto from refuse flowing with the stream.
  • hollow pits 1 At each side of the stream, preferably in line with the side banks thereof, are arranged hollow pits 1, the'inner side Walls 8 of which are preferably though not necessarily aligned with the banks of the stream.
  • the shaft 3 extends in both directions through the adjacent side within the pits are provided with bars 9 which extend upwardly at right angles to the shaft.
  • the bars 9 are spaced from the walls 8 and extend above the tops of the pits, the upper ends of the bars being provided with a longitudinally ranging series of openings Ill.
  • a support H is fixedly secured in thepit, extending upwardly beyond the same preferably at an angle to the vertical, with the'upper end, which is disposed above the upper ends of the bars 9, provided with a sheave or'pulley i2.
  • a cable l3 passes over the sheave l2 and is'terminally provided with a hook or like connection M adapted to engage any one of, the openings ii) of the bars 9.
  • the opposite end of the cable is proi/ided with a weight l5 sumcient to move the screen in the opposite direction in the absence of undue pressure against the screen.
  • a locking means is provided for the bars 9 which serves to hold the screen in operative position in the stream.
  • This locking means is supported upon a strip I6 fixed within each pit 1, being, for example, secured to the support H and braced, as at ll.
  • Moiuited for movement on the strip l6 are looking members or rods IS, the rearends of which are removably secured in a block l9 which is swingingly supported at 20 in an eye or like member 2! secured to the strip.
  • the arrangement is such that the locking rods [8 are free to swing upwardly relative to the strip.
  • the forward ends of the rods are outwardly flared relatively at 22 and adjacent such flared ends are laterally offset at 23 to together provide an approximately rectangular enlargement between and adjacent the forward ends of the rods, the flaring ends 22 of the rods providing an entrance to this enlargement.
  • the rods 18 are ofspring character and ablock 24 is slidably mounted on said rods and may be secured thereon in any desired longitudinal position by set-screws 25.
  • the purpose of the block 24 is to control the resiliency or spreading resistance of the forward ends of the rods, as obviously the more closely the block 24 is moved toward the forward ends of the rods, the greater the resistance of such forward ends to spreading.
  • the locking members are arranged at right angles to the normal position of the bars 9 and the enlarged portion 23 of each pair of locking members is so disposed as to occupy a position coincident with that position of the bars 9 determining the normal or operative position of the screen.
  • the bars 9 are provided in that portion to be engaged by the locking members with a rounded or circular member 28, the diameter of which is substantially equal to the transverse dimension of the enlargement 23 of the locking members and the upper edge 2'! of which look is inclined downwardly in the direction of operative movement of the bars 9.
  • the weight 55 acts to return the screen to a normal operative position.
  • the bars 9 move to normal position under the influence of the weight l5
  • the inclined edges 27 of the blocks 26 engage the slightly upturned flared ends of the locking members and swing the members upwardly on the swinging support 20.
  • the locking members may freely move through the opening provided by the flared ends 22 of the locking members until the block-Z6 is aligned with the enlargement 23 of the locking members, whereupon the latter gravitate to an outward position to embrace the block and so look the screen in operative position subject to further movement under accumulated pressure thereon.
  • the control of the pressure at which the screen would yield is provided through the adjustment of the block 24 and also through the connection of the hook M of the weighted cable and the appropriate opening ID in the bars 9.
  • the spread of the locking members under the pressure on the screen may be rendered as resistant as desired within the limits afforded by the bars and the direct infiuenceof the weight I 5 may be varied by changing the leverage of its pull on the screen support through the use of the appropriate opening in.
  • the screen may be permitted to yield under varying degrees of pressure thereon as may be rendered desirable in different localities and under different conditions.
  • a screen for use in a flowing stream a locking means for holding the screen against movement under normal conditions, said locking means automatically releasing the screen for movement under predetermined pressure on the screen, said locking means comprising spring rods, means for adjusting the tension of the rods to vary the locking influence, and a bar connected with the screen and adapted to be embraced by the rods to lock the screen aganist movement, said rods spreading under predetermined pressure on the screen to free the bars, and means adjustably connected to the bars to return the screen to normal position following pressure movement thereof.
  • a screen for use in a flowing stream a looking means for holding the screen against movement undernormal conditions, said locking means automatically releasing the screen for movement under predetermined pressure on the screen, said screen, locking rods arranged in parallel relation 3 and having spaced terminals through which the bars may freely pass, said bars being formed in wardly of such terminals to provide an enlargement, a block secured on each bar in position to seat in said enlargement in the locked position of the bars, and means carried by the block to displace the locking rods in the movement of the bars toward the locking rods to arrange the spaced terminals of the rods in line with the edges of the bars, wherebyto permit the bars to pass freely between the rods.
  • a screen mounted for swinging movement in a stream a shaft mounted for rotation and carrying the screen, bars carried by each end of the shaft, a block on each bar having an inclined upper end, locking rods arranged in pairs for each bar, said locking rods being supported for bodily swinging movement and being spaced apart at their entrant ends to permit the free passage of the bars, the rods being formed inwardly of their entrant ends with an enlargement of a size to receive the block, and a weightconnected to the upper ends of the bars to move the screen toward an operative position in the absence of pressure thereon, said operative movement of the SCIBLD causing the inclined end of the block to swing the locking rods upwardly and permit passage of the bar through the entrant ends thereof, the enlarged portion of the locking rods moving downwardly to embrace the block on each bar when the bar has moved operatively to align the block with said space.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Filtration Of Liquid (AREA)

Description

APE-Ill 1935.. F. R. PETTEPHER 1,999,637
SCREEN FOR USE IN WATERWAYS Filed June 18, 1934 Patented Apr. 30, 1935 UNITED STATES PATENT OFFlfiE SCREEN FOR USE IN WATERWAYS Frank R. Pettepher, Spokane, Wash.
Application June 18, 1934, Serial No. 731,153
4 Claims. (01. 210-172) walls 8 of the pits and the ends of the shafts This invention is directed to a screen for use in any waterway for the control of the migration of fish, with the construction such that the screen is normally locked in an operative position and.
yields under the accumulated pressure of refuse or the like to permit the free passage of such refuse while insuring that the screen will return to and be locked in normal operative position on the release of such pressure.
The primary object of the present invention is the provision of a screen mounted for swinging movement on the bed of the waterway and normally locked in a position to project above the surface of the stream to ordinarily prevent the passage of fish or the like past the screen; the locking means being adjustable to maintain the screen against movement except under predetermined pressure against the screen, whereupon under such pressure the screen is'automatically released and permitted to move to a position to free the obstruction, with means for automatically returning the'screen when free of such pressure to an operative position within the influence of the locking means for further normal service.
The invention is illustrated in the accompanying drawing, in which:
Figure 1 is a perspective view showing the improvement.
Figure 2 is a vertical sectional view through the screen, showing the mounting.
Figure 3 is a broken elevation, partly in section, of the same.
Figure 4 is an elevation showing the means for stopping screen movement.
Figure 5 is a plan view showing a lock.
The screen proper includes a screen-like body 1 preferably constructed of bars of metal or.the like having a length to project above the surface of the body of water, indicated at 2, when in operative position. The lower ends of the bars making up the screen I are secured to a shaft 3 supported in bearings 4 carried by a foundation block 5 appropriately anchored on the bed of the stream. A shield 6 is secured to the foundation block 5 and partially surrounds and extends above the shaft 3, as indicated in Figure 2, to protect the shaft 3 and the connection of the screen bars thereto from refuse flowing with the stream.
At each side of the stream, preferably in line with the side banks thereof, are arranged hollow pits 1, the'inner side Walls 8 of which are preferably though not necessarily aligned with the banks of the stream. The shaft 3 extends in both directions through the adjacent side within the pits are provided with bars 9 which extend upwardly at right angles to the shaft. The bars 9 are spaced from the walls 8 and extend above the tops of the pits, the upper ends of the bars being provided with a longitudinally ranging series of openings Ill.
A support H is fixedly secured in thepit, extending upwardly beyond the same preferably at an angle to the vertical, with the'upper end, which is disposed above the upper ends of the bars 9, provided with a sheave or'pulley i2. A cable l3 passes over the sheave l2 and is'terminally provided with a hook or like connection M adapted to engage any one of, the openings ii) of the bars 9. The opposite end of the cable is proi/ided with a weight l5 sumcient to move the screen in the opposite direction in the absence of undue pressure against the screen.
A locking means isprovided for the bars 9 which serves to hold the screen in operative position in the stream. This locking means is supported upon a strip I6 fixed within each pit 1, being, for example, secured to the support H and braced, as at ll. Moiuited for movement on the strip l6 are looking members or rods IS, the rearends of which are removably secured in a block l9 which is swingingly supported at 20 in an eye or like member 2! secured to the strip. The arrangement is such that the locking rods [8 are free to swing upwardly relative to the strip.
The forward ends of the rods are outwardly flared relatively at 22 and adjacent such flared ends are laterally offset at 23 to together provide an approximately rectangular enlargement between and adjacent the forward ends of the rods, the flaring ends 22 of the rods providing an entrance to this enlargement. The rods 18 are ofspring character and ablock 24 is slidably mounted on said rods and may be secured thereon in any desired longitudinal position by set-screws 25. The purpose of the block 24 is to control the resiliency or spreading resistance of the forward ends of the rods, as obviously the more closely the block 24 is moved toward the forward ends of the rods, the greater the resistance of such forward ends to spreading.
The locking members are arranged at right angles to the normal position of the bars 9 and the enlarged portion 23 of each pair of locking members is so disposed as to occupy a position coincident with that position of the bars 9 determining the normal or operative position of the screen. The bars 9 are provided in that portion to be engaged by the locking members with a rounded or circular member 28, the diameter of which is substantially equal to the transverse dimension of the enlargement 23 of the locking members and the upper edge 2'! of which look is inclined downwardly in the direction of operative movement of the bars 9.
The normal position of the screen is at a slight inclination vertically in the direction of fiow of water to the screen, as clearly shown in Figure 2. In this position, the weight 15 acts to hold the bars 9 substantially vertical with the relative blocks 26 thereon within the enlargement 23 of the locking members. In this position, the screen prevents the migration of fish longitudinally of the stream past the screen. On the accumulation of refuse against the screen, which would otherwise tend to dam the stream, such refuse, when exerting sufficient pressure against the screen to overcome the tension of the locking members against spreading and the influence of the weight I 5, will force the bars 9 outwardly from between the locking members and thus permit the screen to tilt to a position sufficient to allow the accumulated refuse to freely flow with the stream, this movement of the screen being indicated in Figure 2.
When the screen has been freed from the pressure of the refuse, the weight 55 acts to return the screen to a normal operative position. As the bars 9 move to normal position under the influence of the weight l5, the inclined edges 27 of the blocks 26 engage the slightly upturned flared ends of the locking members and swing the members upwardly on the swinging support 20. As the locking members are then in ppsition above the blocks 26 and in line with the relatively narrow bars 9, the latter may freely move through the opening provided by the flared ends 22 of the locking members until the block-Z6 is aligned with the enlargement 23 of the locking members, whereupon the latter gravitate to an outward position to embrace the block and so look the screen in operative position subject to further movement under accumulated pressure thereon.
The control of the pressure at which the screen would yield is provided through the adjustment of the block 24 and also through the connection of the hook M of the weighted cable and the appropriate opening ID in the bars 9. Through adjustment of the block 24, the spread of the locking members under the pressure on the screen may be rendered as resistant as desired within the limits afforded by the bars and the direct infiuenceof the weight I 5 may be varied by changing the leverage of its pull on the screen support through the use of the appropriate opening in. Thus, the screen may be permitted to yield under varying degrees of pressure thereon as may be rendered desirable in different localities and under different conditions.
What is claimed to be new is:
1. A screen for use in a flowing stream, a locking means for holding the screen against movement under normal conditions, said locking means automatically releasing the screen for movement under predetermined pressure on the screen, said locking means comprising spring rods, means for adjusting the tension of the rods to vary the locking influence, and a bar connected with the screen and adapted to be embraced by the rods to lock the screen aganist movement, said rods spreading under predetermined pressure on the screen to free the bars, and means adjustably connected to the bars to return the screen to normal position following pressure movement thereof.
a 2. A screen for use in a flowing stream, a looking means for holding the screen against movement undernormal conditions, said locking means automatically releasing the screen for movement under predetermined pressure on the screen, said screen, locking rods arranged in parallel relation 3 and having spaced terminals through which the bars may freely pass, said bars being formed in wardly of such terminals to provide an enlargement, a block secured on each bar in position to seat in said enlargement in the locked position of the bars, and means carried by the block to displace the locking rods in the movement of the bars toward the locking rods to arrange the spaced terminals of the rods in line with the edges of the bars, wherebyto permit the bars to pass freely between the rods.
4. A screen mounted for swinging movement in a stream, a shaft mounted for rotation and carrying the screen, bars carried by each end of the shaft, a block on each bar having an inclined upper end, locking rods arranged in pairs for each bar, said locking rods being supported for bodily swinging movement and being spaced apart at their entrant ends to permit the free passage of the bars, the rods being formed inwardly of their entrant ends with an enlargement of a size to receive the block, and a weightconnected to the upper ends of the bars to move the screen toward an operative position in the absence of pressure thereon, said operative movement of the SCIBLD causing the inclined end of the block to swing the locking rods upwardly and permit passage of the bar through the entrant ends thereof, the enlarged portion of the locking rods moving downwardly to embrace the block on each bar when the bar has moved operatively to align the block with said space.
FRANK R. PET'IEPHER. [L.s.]
US731153A 1934-06-18 1934-06-18 Screen for use in waterways Expired - Lifetime US1999637A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US731153A US1999637A (en) 1934-06-18 1934-06-18 Screen for use in waterways

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US731153A US1999637A (en) 1934-06-18 1934-06-18 Screen for use in waterways

Publications (1)

Publication Number Publication Date
US1999637A true US1999637A (en) 1935-04-30

Family

ID=24938286

Family Applications (1)

Application Number Title Priority Date Filing Date
US731153A Expired - Lifetime US1999637A (en) 1934-06-18 1934-06-18 Screen for use in waterways

Country Status (1)

Country Link
US (1) US1999637A (en)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477579A (en) * 1966-10-20 1969-11-11 Fluid Dynamics Ltd Self-clearing screening apparatus for use in irrigation and like projects
US4081374A (en) * 1977-09-28 1978-03-28 Edward Forshee Balance control water screen
US4110216A (en) * 1976-04-22 1978-08-29 Wagnon Albert Lloyd Apparatus for collecting debris floating in a stream
US5032262A (en) * 1988-06-10 1991-07-16 Hydropress Wallander & Co. Ab Device in rinsing screens
ES2168074A1 (en) * 2000-08-04 2002-05-16 Ganchegui Pablo Gaztelu Improved system of elimination by retention of floating rubbish
US20030121847A1 (en) * 2001-12-31 2003-07-03 Clark Joseph Water pollution trap with clay collector
US20040069697A1 (en) * 2002-10-15 2004-04-15 Antonio Martinez Curbside drain barrier for detaining solid trash during no or slow water flow
US20040173513A1 (en) * 2003-03-06 2004-09-09 Nino Khalil Ibrahim Apparatus and method for blocking and controlling the release of solid materials into or through a fluid-flow channel
US20050051499A1 (en) * 2003-09-04 2005-03-10 Nino Khalil Ibrahim Large area catch basin filter
US20060091049A1 (en) * 2004-11-03 2006-05-04 John G. Hurst Drainage water filter for erosion control
US20060124520A1 (en) * 2004-11-03 2006-06-15 Hurst John G Run-off water filter for storm drains
US7138048B1 (en) * 2002-04-30 2006-11-21 Ch2M Hill, Inc. Apparatus and method for the removal of solids and floatables from a wastewater stream
US20080105603A1 (en) * 2006-11-02 2008-05-08 Hurst John G Storm drain filter
US20080226390A1 (en) * 2003-03-06 2008-09-18 Khalil Ibrahim Nino Automatic fluid channel screen lock-unlock system
US20080308477A1 (en) * 2004-11-03 2008-12-18 John Hurst Cascading storm drain filter
US20090236293A1 (en) * 2008-03-18 2009-09-24 John Alvarado Drain grate system and methods
US20120103883A1 (en) * 2010-11-03 2012-05-03 Denis Friezner Fluid flow control and debris intercepting apparatus
WO2012081990A1 (en) 2010-12-13 2012-06-21 Biosort As Screen for controlling the migration of fish in a flowing stream such as a river
US20120261353A1 (en) * 2009-09-22 2012-10-18 Donald Ian Phillips Separator
US20140138298A1 (en) * 2012-10-10 2014-05-22 Jared Joseph Schoepf Grate filtration system
US8734053B1 (en) 2010-03-31 2014-05-27 Gerald L. Sackett Articulated baffle assembly
US20150053598A1 (en) * 2013-08-22 2015-02-26 Denis Friezner Fluid Flow Control and Debris Intercepting Apparatus
US9279242B2 (en) 2013-03-13 2016-03-08 G2 Construction, Inc. Drain grate system and method
US9611670B1 (en) * 2016-02-16 2017-04-04 Jose A. Pacheco Systems and methods for installing a livestock fence across a waterway
US10648165B1 (en) * 2018-10-18 2020-05-12 Denis Friezner Storm water gate with sensors

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477579A (en) * 1966-10-20 1969-11-11 Fluid Dynamics Ltd Self-clearing screening apparatus for use in irrigation and like projects
US4110216A (en) * 1976-04-22 1978-08-29 Wagnon Albert Lloyd Apparatus for collecting debris floating in a stream
US4081374A (en) * 1977-09-28 1978-03-28 Edward Forshee Balance control water screen
US5032262A (en) * 1988-06-10 1991-07-16 Hydropress Wallander & Co. Ab Device in rinsing screens
ES2168074A1 (en) * 2000-08-04 2002-05-16 Ganchegui Pablo Gaztelu Improved system of elimination by retention of floating rubbish
US6936163B2 (en) * 2001-12-31 2005-08-30 Clark Joseph Use Water pollution trap with clay collector
US20030121847A1 (en) * 2001-12-31 2003-07-03 Clark Joseph Water pollution trap with clay collector
US7138048B1 (en) * 2002-04-30 2006-11-21 Ch2M Hill, Inc. Apparatus and method for the removal of solids and floatables from a wastewater stream
US20040069697A1 (en) * 2002-10-15 2004-04-15 Antonio Martinez Curbside drain barrier for detaining solid trash during no or slow water flow
US6869523B2 (en) * 2002-10-15 2005-03-22 Antonio Martinez Curbside drain barrier for detaining solid trash during no or slow water flow
US20080226390A1 (en) * 2003-03-06 2008-09-18 Khalil Ibrahim Nino Automatic fluid channel screen lock-unlock system
US7951291B2 (en) 2003-03-06 2011-05-31 Khalil Ibrahim Nino Automatic fluid channel screen lock-unlock system
US20040173513A1 (en) * 2003-03-06 2004-09-09 Nino Khalil Ibrahim Apparatus and method for blocking and controlling the release of solid materials into or through a fluid-flow channel
US7491338B2 (en) * 2003-03-06 2009-02-17 Khalil Ibrahim Nino Apparatus and method for blocking and controlling the release of solid materials into or through a fluid-flow channel
US20050051499A1 (en) * 2003-09-04 2005-03-10 Nino Khalil Ibrahim Large area catch basin filter
US7494585B2 (en) 2003-09-04 2009-02-24 Khalil Ibrahim Nino Large area catch basin filter
US20080308477A1 (en) * 2004-11-03 2008-12-18 John Hurst Cascading storm drain filter
US7208082B2 (en) 2004-11-03 2007-04-24 John G. Hurst Drainage water filter for erosion control
US20060124520A1 (en) * 2004-11-03 2006-06-15 Hurst John G Run-off water filter for storm drains
US20060091049A1 (en) * 2004-11-03 2006-05-04 John G. Hurst Drainage water filter for erosion control
US7438802B2 (en) 2004-11-03 2008-10-21 Hurst John G Run-off water filter for storm drains
US20080105603A1 (en) * 2006-11-02 2008-05-08 Hurst John G Storm drain filter
US20090236293A1 (en) * 2008-03-18 2009-09-24 John Alvarado Drain grate system and methods
US20120261353A1 (en) * 2009-09-22 2012-10-18 Donald Ian Phillips Separator
US8734053B1 (en) 2010-03-31 2014-05-27 Gerald L. Sackett Articulated baffle assembly
US20140041744A1 (en) * 2010-11-03 2014-02-13 Denis Friezner Fluid Flow Control and Debris Intercepting Apparatus
US8535523B2 (en) * 2010-11-03 2013-09-17 Denis Friezner Fluid flow control and debris intercepting apparatus
US20120103883A1 (en) * 2010-11-03 2012-05-03 Denis Friezner Fluid flow control and debris intercepting apparatus
US8945375B2 (en) * 2010-11-03 2015-02-03 Denis Friezner Fluid flow control and debris intercepting apparatus
WO2012081990A1 (en) 2010-12-13 2012-06-21 Biosort As Screen for controlling the migration of fish in a flowing stream such as a river
US20140138298A1 (en) * 2012-10-10 2014-05-22 Jared Joseph Schoepf Grate filtration system
US9279242B2 (en) 2013-03-13 2016-03-08 G2 Construction, Inc. Drain grate system and method
US20150053598A1 (en) * 2013-08-22 2015-02-26 Denis Friezner Fluid Flow Control and Debris Intercepting Apparatus
US9428899B2 (en) * 2013-08-22 2016-08-30 Denis Friezner Fluid flow control and debris intercepting apparatus
US9611670B1 (en) * 2016-02-16 2017-04-04 Jose A. Pacheco Systems and methods for installing a livestock fence across a waterway
US9784012B2 (en) * 2016-02-16 2017-10-10 Jose A. Pacheco Systems and methods for installing a livestock fence across a waterway
US10648165B1 (en) * 2018-10-18 2020-05-12 Denis Friezner Storm water gate with sensors

Similar Documents

Publication Publication Date Title
US1999637A (en) Screen for use in waterways
US1457637A (en) Device for conducting surface water to drain tiles
US1834775A (en) Safety swinging post for mail boxes
US2250038A (en) Fishing sinker
US1765185A (en) Blind ditcher
US2618876A (en) Automatic return farm gate
US2173511A (en) Surf-fishing device
US1615830A (en) Awning-roller center support
US757882A (en) Hitching-post.
US6047A (en) Shower-bath
US1901956A (en) Weir structure
US1757872A (en) Siphon
DE1903987C3 (en)
US387363A (en) Win dm ill-regulator
US1935361A (en) Waste-pipe stopper
US549572A (en) Cable water-gate
US1530551A (en) Weed drifter
US3280520A (en) Snubbing apparatus for use with a portable drilling mast
AT158716B (en) Explosive device.
US2006267A (en) Gate hinge
US2583070A (en) Intermediate pivot gate and latch
US2484980A (en) Tilting gate
DE1229017B (en) Suction dredger
AT119988B (en) Swing.
DE866868C (en) Fishing raft