Roving bar screen
OwnerHerman E. Menschinginventor
Life of this patent
Estimating the term…
Abstract
A laterally moveable bar rake is provided for cleaning a bar rack installed across a water stream of a water treatment facility, storm water station or the like. The device includes a traveling framework for back and forth movement across the top of the bar rack, a telescoping arm with a rake head mounted on the lower end of the telescoping arm and a tilt mechanism for tilting the telescoping arm between raking and extension position so that the arm can be extended to the bottom of the bar rack or beyond, tilted toward the bar rack and withdrawn along the bar rack to rake debris onto a discharge hopper or conveyor.
Claims11
A laterally moveable bar screen operative to positively clean and remove debris from the upstream front side of a bar rack disposed across a liquid stream, said bar screen comprising,
- a traveling framework,
- support means for supporting said traveling framework, said support means being fixedly attached to at least one side of said liquid stream and adjacent the top of a bar rack for lateral movement back and forth across the top of said bar rack,
- a telescoping arm having a top end and an extendable lower end,
- a rake head mounted on said lower end of the telescoping arm for raking debris from said bar rack at times,
- pivotal support means for supporting said telescoping arm on said traveling framework for pivotal movement of said arm between a raking position wherein said rake head is positioned in raking relation to said bar rack and an extension position wherein said rake head is positioned in clearance relation from said bar rack for extending past debris accumulated thereon,
- telescoping means for extending and retracting said telescoping arm between an extended position wherein said rake head is situated adjacent the bottom edge of said bar rack and a retracted position wherein said rake head is positioned adjacent the top edge of said bar rack,
- tilt means for pivoting said telescoping arm between said raking and extension positions,
- screening collection means associated with said traveling frame work for receiving debris raked from said bar rack by said rake head upon retraction of said telescoping arm to the retracted position, and
- drive means for laterally moving said traveling framework on said support means for laterally repositioning said rake head relative to said bar rack.
A system comprising,
- a bar rack disposed across a liquid stream and having an upstream front side, and
- a laterally moveable bar screen operative to positively clean and remove debris from the upstream front side of said bar rack disposed across a liquid stream, said bar screen comprising,
- a traveling framework,
- support means for supporting said traveling framework, said support means being fixedly attached to at least one side of said liquid stream and adjacent the top of said bar rack for lateral movement back and forth across the top of said bar rack,
- a telescoping arm having a top end and an extendable lower end,
- a rake head mounted on said lower end of the telescoping arm for raking debris from said bar rack at times,
- pivotal support means for supporting said telescoping arm on said traveling framework for pivotal movement of said arm between a raking position wherein said rake head is positioned in raking relation to said bar rack and an extension position wherein said rake head is positioned in clearance relation from said bar rack for extending past debris accumulated thereon,
- telescoping means for extending and retracting said telescoping arm between an extended position wherein said rake head is situated adjacent the bottom edge of said bar rack and a retracted position wherein said rake head is positioned adjacent the top edge of said bar rack,
- tilt means for pivoting said telescoping arm between said raking and extension positions,
- screening collection means associated with said traveling frame work for receiving debris raked from said bar rack by said rake head upon retraction of said telescoping arm to the retracted position, and
- drive means for laterally moving said traveling framework on said support means for laterally repositioning said rake head relative to said bar rack .
Dependencies are inferred from the claim text.