Abstract: A bar screen for screening a flow of wastewater, the bar screen comprising a frame, a first bar rack supported by the frame and extending across the flow of wastewater, the first bar rack including a plurality of generally parallel, elongated first bars each having a top end and a bottom end, the plurality of first bars defining therebetween a plurality of upstream spaces, a first bar rack top support engaged with the top end of each first bar and a first bar rack bottom support engaged with the bottom end of each first bar, a second bar rack supported by the frame and extending across the flow of wastewater, the second bar rack including a plurality of generally parallel, elongated second bars each having a top end and a bottom end, a second bar rack top support engaged with the top end of each second bar and a second bar rack bottom support engaged with the bottom end of each second bar, the second bar rack bottom support overlying a portion of the first bar rack bottom support, and a mounting arrangement f

Abstract: An arrangement for the separation of pollutants and, as the case may be, bulky solids, i.e. coarse matter, in separating structures, such as rainwater relief structures for the protection of bodies of water. The rainwater or combined water exceeding a critical combined water outflow is diverted to another part of a sewer system or to a channel leading to a receiving body of water by flowing over a relief weir, and being freed of coarse matter by means of an interceptor prior to its overflow into the channel. The interceptor (20) is fashioned of a plurality of bar elements (21) arranged with preferably equidistant mutual spacing on the overflow side of the relief weir (20), and a separate pollutant channel (22) receives the coarse matter retained by the interceptor (20).

Abstract: A drain trap having a T-shaped base portion with a removable filter arranged for visual inspection and cleaning. The filter has a flow-through inspection reservoir insert with a filter cap extending downstream therefrom.

Abstract: The present disclosure concerns a storm runoff filtration system for placement into in-place storm drainage systems. In locations where runoff is directed vertically or nearly vertically downward on gravity flow, an inlet fluid guide of the system directs fluid to a flow through a filter cartridge. The filter cartridge is removable and rechargeable with a selected filter media.

Abstract: A sewage water installation has a discharge basin in which is arranged a screening unit linked to a back-and-forth movable cleaning carriage. The discharge basin (20) is subdivided by a partition (24) and by the screening unit (30) into a storage chamber (25') and an outflow chamber (25"). The storage chamber (25') is linked to an inflow pipe (26) and to an outflow pipe (27) and the outflow chamber (25") is linked to an outflow pipe (28). In order to increase the storage volume and to reduce the throughflow speed, a retaining element (40) is arranged on the back-side of the screening unit (30), as seen in the direction of flow, inclined so as to form an angle therewith.

Abstract: An overflow sieve in which the sieve bottom is in the form of a slotted hole sheet whose slots have a width less than 1.0 mm and a length of 0.5 to 4 mm or a fine hole sheet with noncircular holes of a greatest width or diameter of less than 2 mm.

Abstract: A device for covering and protecting a rain gutter to prevent debris, vermin and other material from entering the gutter and accumulating therein. The device comprises a main body adapted to be affixed to the roof, and a rain water deflector extending from the main body downwardly into the gutter, forming a trough and extending to an edge flange which can be affixed to an outwardly-extending gutter flange. The trough has a series of slots therein to allow water to pass from the trough into the rain gutter. The trough is oriented at least partly beneath the main body so that debris will pass thereover while water will sheet down the deflector into the trough and be captured within the gutter therebeneath.

Abstract: A separating grid (1) for collection and removal of solid particles and objects (4) from running water (2) in a channel (2). The separating grid (1) comprises a stand (9) including a separating unit (10) formed by separating grid bars (11, 12) positioned side by side in such a manner that fixed grid bars (11) alternate with mobile grid bars (12), said grid bars formed with collection and removal means (13). The fixed grid bars (11) are securely attached to the stand whereas the mobile grid bars (12) are connected at their upper ends (17) to a drive unit (18) and at their lower ends (16) they are arranged for controlled movement in the stand. The drive unit imparts to the mobile grid bars a movement which at the upper end of the bars follows a closed path but in a direction towards their lower ends follows successively and increasingly flattened, elliptical paths changing at the lower ends into an essentially rectilinear to-and-fro movement path.

Abstract: Apparatus for scraping debris from a trash rack occupying a position in a owing stream has a driven, upper turning drum and a pair of chains trained about the drum and carrying scraper blades which engage and carry debris on the upstream side of the rack upwardly for disposal. Each chain is composed of a plurality of links joined at their ends by pivot connections which limit the pivotal movement of the links from positions of linear prolongation in such manner as to avoid the necessity of a lower turning drum. By supporting the chain from an upper drum only, the lower parts of the chain are movable freely in directions away from and toward the rack, as well as vertically.

Abstract: A device for cleaning large quantities of water (3) of rakings at overflow edges (2), especially from rain water reservoirs, rivers, etc., with a stationary separation area (10), which is formed as a section of a cylinder jacket (7) with an axis (8) parallel to the overflow edge, through which the quantity of water flows is provided. A takeover device (11), which is driven about an axis (8) of the cylinder jacket (7), is assigned to the separation area (10) for removing the rakings separated at the separation area (10).

Abstract: A system for filtering, storing, and distributing groundwater, which includes a gallery having an elongated main body portion with an arch-shaped configuration with an enlarged inner chamber, having end walls covering each end thereof with an inlet opening for receiving the liquid to the enlarged inner enclosure, having side walls with laterally extending outer ribs and inner corrugations within the elongated body portion. The system also includes a collapsible filter having a hinged frame with a filtering material and a side portion for sliding into the inner corrugations of the gallery.

Abstract: An elongated body member is of inverted U-shape and is capable of seating in a gutter over a downspout opening. The body member has cross slots and bottom edge notches in an arrangement that efficiently stops leaves and debris but that allows water to drain through. Further, the body member has tapered end portions terminating in rounded tip ends that also are engaged by leaves and debris for efficient straining. The construction of the body member allows the sides to be squeezed together for fitting into eave troughs and the like during installation.

Abstract: A cleaning system (10) for an eave trough (11) and a downspout (12) includes a conduit assembly (13) extending along a portion of the downspout (12) and along at least a partial length of the eave trough (11), and a strainer assembly (14) interposed with respect to the downspout (12). A plurality of spaced spray nozzles (16) extend from the conduit assembly (13) and spray water toward the junction (17) of the eave trough (11) and downspout (12). A fitting (19) is connected to one end the conduit assembly ( 13 ) and is adapted for interengagement with a hose (20) which provides for a source of water under pressure. The spray of water allows for the flushing or purging of the eave trough (11), directing debris for the eave trough (11) to and through the downspout (12).

Abstract: A water intake comprises a common frame and assembled thereto and-forming therewith an integral self-contained unit a pump adapted to be immersed and a trash rake and an associated grid on the suction side of the pump and/or a filter on the discharge side of the pump.

Abstract: A long sand trap for separating and removing sand from inflow channels, particularly of sewage treatment plants is provided with a settling channel (1) having in particular a trapezoidal cross-section and extending along a straight path. A transporting conveyor device (8) which is acting opposite to the direction of flow is provided in the bottom area (6). A classifying conveyor device (10) discharges the sand delivered from the transporting conveyor device (8) in an upwardly inclined manner. The classifying conveyor device (10) is arranged in the central longitudinal plane (3) of the settling channel (1). It has a discharge chute (17) which can be used selectively left-hand or right-hand.

Abstract: A leaf guard and strainer assembly for use in the downspout of a roof gutter is disclosed which tends to prevent the downspout from being clogged with leaves and debris while permitting water in the gutter to flow around the sides of the assembly and around the sides of a barrier of leaves and debris piled against the assembly so as to enter the downspout from the sides of the assembly which face the opposing gutter sidewalls. The assembly includes a base plate containing an opening adapted to fit upon the gutter floor over an entrance to the downspout so that the opening and entrance communicate. Also included is a plurality of U-shaped ribs, the legs of which are inserted downwardly through the plate on opposite sides of the opening, lower free end portions of which project below the plate into the downspout. An elongated rigid beam member is connected to the upper ends of the ribs to maintain the desired spacing between them.

Abstract: A screening arrangement is disclosed for protecting the pump compartment of a tank from the entrance of debris including a holder frame mounted in the tank, slidably receiving therein a pair of screens aligned with each other. The outside screen is removed for cleaning, replaced behind the other screen after cleaning to provide constant protection. A debris collecting trough is provided at the bottom of each screen. A ramp located at the bottom of the holder frame assists in indexing of the other screen as the cleaned screen is removed.

Abstract: Apparatus for protecting from water damage the electric motor which drives the cog rake bar screen of a waste water treatment plant. A shell of air impermeable material surrounds the motor and has an opening at the shell bottom to drain water. Various arrangements and devices prevent water or debris from entering the opening.

Abstract: A purification method and device for purifying industrial liquid such as oil from contaminates including first container housing for receiving the industrial liquid in bulk and separating liquid and particulate contaminates therefrom by reversing a flow direction of the received liquid. The thus processed liquid is transferred to a second container and is subjected to a further filtration by forcing the liquid under high pressure through at least one filter element accommodated in the second container. The high pressure on the at least one filter element results in a compression of the at least one filter element thereby precluding the liquid being processed from bypassing the filter element. A further filter barrier seal element may be provided above the at least one filter element and serves as a final filtration prior to a discharge of the liquid from the second container.

Abstract: A wall means intended for apparatus for separation of a liquid-containing portion from a liquid-containing particle material which is fed through the apparatus in a predetermined direction (A). The wall means comprises a plurality of bar profiles defining continuous slots between them to allow through the liquid-containing portion. According to the invention each bar profile has on its inner side facing the liquid-containing particle material a ridge portion extending between the ends of the bar profile and being provided with two continuous guide surfaces which, as seen in a cross section of the rod profile, are inclined in relation to the drainage direction (B) of the liquid-containing portion through the adjacent slot. Furthermore, the inclined guide surfaces in their longitudinal direction are disposed to coincide with the predetermined direction of feed (A) of the liquid-containing particle material in order to influence the liquid-containing particle material to maintain this direction of feed (A).

Abstract: A filter without moving parts is placed in a storm sewer inlet that conveys stormwater flows. The filter is designed to fit a storm sewer inlet and rests on angle iron supports. The supports are attached to the storm sewer inlet walls below the inlet opening so the filter does not pond stormwater runoff in the contributing streets. The filter is composed of a perforated aluminum section riveted to a tubular steel frame. A weir and hydraulic opening for flow conveyance is provided adjacent to the filter. A grate type rack is constructed across the hydraulic opening. At least one handle is attached to the filter on the side of the inlet opening.

Abstract: An apparatus conveys screenings collected on a bar screen partially immersed in a sewage flow and inclined in the flow direction, and in certain cases on an adjoining apron screen. A rake device conducts the screenings to a discharge position at the upper edge of the bar screen or the apron screen. The screenings are conveyed simultaneously along at least two conveying paths and thus given screenings are transferred along mutually adjoining conveying paths. The rake device includes at least two rake members spaced at intervals in the conveying direction and connected together by a common drive that causes simultaneous translatory movements in the same direction of both rake members.

Abstract: A mechanically cleaned bar screen or bar rack is disclosed for removing debris from water and wastewater treatment facilities which comprises a frame with housings supported thereon and a bar rack and dead plate. The apparatus is supported on the ledge of the sluice of a water or wastewater treatment facility tilted backward at an angle of about 0.degree.-30.degree. with the bar rack submerged in the flowing stream of water. A carriage carries a pivotally mounted rake assembly with a rake engaging the bar rack. The carriage is reciprocated along a guide rail by motor operated lead screws which extend through rollnut assemblies supporting the carriage. At the top of the traverse of the carriage, the rake is swept by a wiper to remove debris to discharge down a chute for pick up. The motorized drive system is totally enclosed. The motor and gear boxes are stationary and do not travel with the rake carriage. Corrosion resistant materials are used to ensure long life.

Abstract: A portable pressure screen apparatus is disclosed having a cylindrical shaped pressure housing defining upper and lower hingedly connected halves. The housing includes a slurry inlet aperture raised relative to a filtered slurry discharge port situated at the opposite end of the pressure housing from the slurry inlet aperture. A screen spans the interior of the housing, separating the interior into an upper chamber and a lower chamber. Collected particulate matter from the slurry inlet aperture is accumulated in the upper chamber and slurry filtered through the screen leaves the interior of the housing through the filtered slurry discharge port connected to the lower chamber. A support frame is employed to adjustably support the housing in a generally angled attitude relative to the horizontal.

Abstract: An elongated, conical cage of spaced-apart rods is disclosed, each rod having a first and secured to the apex of the cone, and a second end terminating in the open of the cone which is formed by a circular ring-shaped rod. The open end of the conical cage and the circular rod forming the open end are secured to a band preferably constructed of metal which forms a fixation device for securement to the exposed end of the pipe. Preferably, the rods forming the conical cage are spaced apart by approximately six inches, a distance which has been found sufficiently wide to enable debris to flow through and out of the apparatus, and sufficiently narrow to prevent entry of small animals such as beavers into the apparatus.

Abstract: A machine for intercepting solid constitutents in a liquid stream, such as sewage, has a frame which carries a downwardly sloping screen positionable in and across the stream so that the liquid flows through but the outer side of the upwardly and forwardly sloping screen intercepts solid constituents. The screen has a stationary grate with parallel grate bars extending from the lower to the upper end of the screen, and a mobile grate with parallel grate bars which alternate with the grate bars of the stationary grate. The mobile grate is repeatedly movable forwardly of the stationary grate to lift off the stationary grate bars those solid constitutents which were intercepted by the two sets of grate bars, and the mobile grate is then moved upwardly to raise the lifted solid constituents along the outer side of the stationary grate prior to redepositing the lifted constituents on the stationary grate.

Abstract: The invention relates to a device for the removal of particles and/or screenings from a liquid running in a laundry. A screen with openings in the shape of a cylinder jacket reaches into the laundry and is tilted upwards. The screen is partly immersed in the liquid, and parallel haulage track for the material is provided. The track is located spaced from the screen, and has the form of a screw conveyor with a housing, a shaft and a conveyor helix. The conveyor helix moves alongside the screen and picks up the material and transports it upwards. The openings with their lengthwise direction are inclined relative to the axis of the cylindrical jacket-shaped screen so that they are situated approximately parallel to the effective direction of the total force exerted on the material by the conveyor helix.

Abstract: Improved bar screen raking systems are provided with telescopical boom members, forming the rake arm controlling displacement up and down, in combination with a hydraulic piston rod cylinder, controlling displacement in and out. In one embodiment the raking system includes a telescopical rake arm boom comprising a boom member supporting a bearing slide and ball carrier, a cam follower and track arrangement in fixed spaced apart parallel disposition on opposing sides along the length of said boom, a boom side member connected to said bearing and cam arrangements for carrying a rake, a hydraulic piston driven cable device fixedly supported by said boom and parallel to said bearing slide and cam follower arrangements for controlling boom displacement up and down and a hydraulic piston rod cylinder device for controlling boom displacement in and out.

Abstract: A bar screen assembly includes a bar rack interposed across a passageway. At least one rake arm for raking debris from the bar rack to an upper end of the bar rack is provided. An apron adjacent the upper end of the bar rack receives debris, and the apron is mounted to the frame for movement between a receiving position and a dumping position. A mechanism is provided to sense movement of the rake arm relative the upper end of the bar rack, and a mechanism is provided for moving the apron from the receiving position to the dumping position in response to the sensing mechanism.

Abstract: A bar grid is formed with multiple vertical rods supporting multiple horizontal roll formed elements with a flange at a front edge of each element. The grid is mounted in a water effluent stream on each side of a solid filter screen or grinder and funnels solid material down to the compactor without buildup of solids on the grid screen.

Abstract: A system for removing objects from flowing liquid includes a screen for removing the objects from the liquid. The screen includes a movable component and a driving mechanism for moving the component through a closed path so as to move the objects upwardly. The system further includes a shield for pressing the objects against the screen. The shield is parallel to the screen. The system further includes supporting means for supporting the shield and for permitting the shield to be pushed away from the screen by the objects while maintaining the angular orientation of the shield with respect to the screen. The supporting means includes a linkage system which is connected to an upper portion of the shield.

Abstract: An apparatus for removing solids from a liquid flow stream comprising a bar screen for obstructing solids from the liquid flow stream and a reciprocal rake having a plurality of projection adapted for cooperation with the bars of the screen for removing solids accumulated thereon. The opposite sides of the rake are supported by guide rollers adapted for maintaining the rake projections in pre-determined relatively closely spaced relation to the bars during an upward raking stroke for effecting substantially complete removal of solids accumulated on the bars while preventing continued direct contact between the rake projections and the bars.

Abstract: A device for the separation and transport of material from polluted medium, for example waste water, comprises a grate (5) mounted in a support structure (1). The grate is composed of a series of stable rods (3) and adjustable rods (4), where the stable and adjustable rods are respectively joined and form a unit. Said unit is disposed in the grate (5). The grate (5) is provided with or without three wave-shaped shelves (6, 7, 8). One shelf (6) is disposed at the bottom of the device just below the surface of the medium, and the other two shelves (7, 8) are disposed at the top of the device, with the shelf (7) being mounted at about the surface of the medium. The edges of the rods (3, 4) having the shelves are turned against the direction of flow of the medium. The adjustable rod unit (4) is disposed so as to be driven up and down by a piston (8'). The piston (8') is suspended on a rail (10) mounted in the support structure (1). The movement proper is being performed by a wheel (15).

Abstract: Apparatus for separating contaminants from contaminant entrained flows including an inclined longitudinally extending filtering trough with a floating conveyor disposed therein, the trough having a lower inlet and upper outlet and being pivotally mounted intermediate its extremities relative a sump so that the lower portion of the trough extends into the sump with the conveyor driven at its lower extremity from a power source adjacent the pivot area and in spaced relation from the trough outlet.

Abstract: The invention relates to a separating conveyor for separating solid materials from liquids. According to the invention, above the conveying path (17) of the conveyor and essentially supported against the conveying path (17) there is arranged a grate (1) which at least at one end is connected to the conveyor by means of elastic members (2). In addition to this, the conveying path (17) is provided with members (6) in order to guide the grate and the solid materials.

Abstract: A method and device for the separation of substantially solid bodies from a liquid are disclosed in which an obliquely arranged screen grid is provided with an upper region, a lower region, and two opposite edge regions and is suppllied with liquid at the upper region to separate the solid bodies from the liquid in the form of screenings which travel along an upwards facing surface of the screen grid. A cleaning device rests against the upwards facing surface of the screen grid and moves the screenings during movement of the cleaning device horizontally towards the edge regions to cause the screenings to pass onto transport surfaces situated adjacent to the edge regions. The transport surface extends along the length of the screen grid and is smooth.

Abstract: An improved gutter-downspout connection unit to be used in connecting a conventional gutter to a conventional downspout in rain water removal systems which is generally anvilar in structure comprising an upper body having first and second upper body sides and first and second end pieces with at least one of the end pieces having a smooth curvature which downwardly and inwardly converges towards the other end piece wherein the upper body sides and the end pieces adjoin each other along common edges such that the upper edges of the upper body sides and the end pieces form a common edge defining a top opening, and the lower edges of the upper body sides and the end pieces form a common edge defining a bottom opening substantially opposite the top opening, such that and debris and water contained in the conventional gutter will follow a curved path from the gutter to the downspout thereby making the gutter-downspout connection unit essentially clog-resistant.

Abstract: A screen is mounted in an apparatus for contacting particulate solids with a fluid. The apparatus comprises an elongate column for holding a bed of particulate solids for contact with a fluid, the column being designed to be oriented substantially vertically in use and having a fluid inlet near the bottom for admitting a fluid into the column and a fluid outlet near the top for permitting the fluid to exit the column after passing upwardly through a bed of particulate solids in the column. The purpose of the screen is to screen solids from the fluid exiting the column through the fluid outlet. The screen comprises a plurality of vertical screen wires, and the screen is located within the column such that all of the fluid passing through the column passes through the screen and then through the fluid outlet. Each pair of adjacent vertical screen wires defines a substantially vertical screen slot therebetween.

Abstract: A lift apparatus adapted for reliable, substantially maintenance-free operation in material transfer systems, including systems that are subject to considerable contamination. The lift apparatus includes an open top container, a support plate for normally supporting the container in upright position, and a ball screw drive for moving the support plate and container between a filling station in which material may be introduced into the container and a discharge station. The container is supported for relative pivotal movement with respect to the support plate, and a chain and sprocket arrangement is provided for automatically pivoting the container to a dumping position as it is raised into the discharge station and for returning the container to its normal upright position as it is lowered from the discharge station following dumping.

Abstract: This invention is an apparatus which collects and stores grease discharged from exhaust fan systems of commercial kitchens. There is a means for collecting the grease which is adjustable so that it can be attached to fit most any size commercial exhaust fan. Once the grease is collected, it flows into a means for storing the grease. The means for storing the grease is releasably supported by means for collecting the grease. Thus, the means for storing the grease can be released, the stored grease removed, and then re-attached to the means for collecting the grease. The invention also includes a means for discharging rain water that is collected by the means for collecting grease. Any water which is collected is discharged into the drainage pipe located on the restaurant roof.

Abstract: A device for removing material screened or filtered out of a liquid flowing in a channel. It consists of an unpowered cylindrical grating that merges into a screw-type conveyor. The grating slants down, partly immersed in the liquid, to the bottom of the channel. The bars of the grating extend over its total length leaving longitudinal interstices between them. The upward-sloping conveyor comprises a housing, a shaft, and a worm and conveys the screened-out material to a depositing point. The worm picks up the screened-out material as it scrapes the bars of the grating and conveys the material upward, constantly keeping the grating clean. The grating bars (8) are more or less triangular or trapezoidal in cross-section, with rounded-off edges, and positioned in such a way that one side (25) of the triangular or trapezoidal cross-section is oriented tangential to the circumference of the conveyor worm (16).

Abstract: A bar screen cleaning apparatus in which a rake for cleaning the bar screen is raised and lowered by a transport system which includes an elongated flexible motor-driven train which transports the rake, a train track which extends substantially parallel to the bar screen at its lower end and curves at its upper end over the platform and a curved guide to maintain the train in engagement with the track and to guide the flexible train along the path of the curved track.

Abstract: Injection-molded intake-water filtering apparatus designed for use with electric power generating stations and the like, comprising a rectangular elastomeric grid in which the number and spacing of the longitudinal elements are both adjustable. The lateral spacing between the longitudinal elements is established by cylindrical sleeves through which pass transverse rods which bind together the longitudinal elements to form the grid. The elastomeric material used is of a hardness, strength, and elasticity necessary to resist the large forces to which the trash rake is exposed and sufficiently smooth that ice-nucleating centers and marine-growth anchors are effectively absent on the surface of the finished grid.

Abstract: This invention relates to a floor drain and methods for its installation, more specifically to a floor or shower drain having two sets of weep holes and to a method for its installation.Conventional drains generally in use today have only one set of weep holes to drain water which may seep down to a water impervious pan. As a result, if the shower stall is installed improperly, water may seep out and cause extensive water damage.The invention relates to a shower drain installation which will be effective in preventing water damage even if the subfloor is not ideally suited for promoting drainage in a shower.

Abstract: A bar screen filter comprises a plurality of bars arranged in closely spaced parallel relation so as to define slots through which liquid flows. A scraper element is disposed above the bar screen and has a plurality of free floating knife blades projecting downwardly through the slots between the said bars.

Abstract: A feed box assembly including a feed box for feeding a slurry or other mixture to a screen, the box having an adjustable gate for controlling the rate and impingement angle of the feed on a screen and seals on the gate and cooperating fixed deflectors in and on the box for preventing the fluid mixture during feeding from spewing around sides of the gate.

Abstract: A debris separator is provided in the downspout of a gutter system wherein a steeply angled grating is provided in the downspout which permits water to flow down through the downspout while leaves and other debris are carried downwardly along the grating and out of an opening in the downspout.

Abstract: A bar screening apparatus for the efficient screening and removal of solid materials from a liquid flow stream. The bar screen includes a plurality of bars that are disposed in substantially parallel adjacent relation to each other and each have an upstream face disposed at an acute angle to the direction of flow of the liquid flow stream for enhancing screening of even relatively thin solid waste materials without significantly impeding the flow stream. The bars of the screen preferably are formed with a plurality of flow apertures in their active region which further minimizes head losses in the system and enhances screening of solid materials. A power operated two-directional rake is provided for more efficiently removing solid material that accumulate on the bar screen. Projections on the rake engage the bar screen only in one direction of the rake's movement and means are provided for forcing a close-fitting relationship between the rake projections and the screen bars during the raking operation.

Abstract: A bar screen cleaner utilizes a reciprocal carriage mounted downstream of a vertical bar screen to move a cleaning rake vertically to clean accumulation from the screen. The cleaning rake is pivotally mounted to the carriage such that the rake is positively urged into engagement with the bar screen as the carriage reaches its lowermost position. The rake is latched in a screen engaging position during the upstroke of the carriage and is released as the carriage reaches its uppermost position.

Abstract: This invention relates to a floor drain and methods for its installation, more specifically to a floor or shower drain having two sets of weep holes and to a method for its installation.Conventional drains generally in use today have only one set of weep holes to drain water which may seep down to a water impervious pan. As a result, if the shower stall is installed improperly, water may seep out and cause extensive water damage.The invention relates to a shower drain installation which will be effective in preventing water damage even if the subfloor is not ideally suited for promoting drainage in a shower.