Sewage comminutor installation

Claim 2

A housing for a generally cylindrical sewage comminutor rotatable about an upright axis, said housing being generally of scroll form defining a flow passage of progressively diminishing width wrapped around the cylindrical comminutor and having an inlet at the large end thereof, at least a major portion of said housing comprising a wall structure mounted for removal by displacement axially upwardly with respect to the comminutor.

Claim 3

A housing as defined in claim 1 in which the lower portion of said removable wall structure is downwardly and inwardly inclined to a lower edge closely conforming with the cross sectional shape of the cylindrical comminutor.

Claim 4

A housing as defined in claim 1 in which said wall structure has a scroll length extended around about one-half of the circumference of the comminutor.

Claim 5

A sewage comminutor installation for a generally cylindrical comminutor rotatable about an upright axis and discharging into a subjacent sump, comprising a basin for the comminutor having a bottom wall adjacent the lower end of the comminutor and above the level of the sump, the basin including a comminutor housing of generally scroll form defining a flow passage of progressively diminishing width wrapped around the cylindrical comminutor and having an inlet at the large end, and a dry well offset at one side of the comminutor, at least a major portion of the comminutor housing comprising a wall structure lying between the comminutor and the dry well and being mounted for removal by displacement axially upwardly with respect to the comminutor thereby providing access to the comminutor from said dry well.

Claim 6

A sewage comminutor installation for a generally cylindrical comminutor rotatable about an upright axis and discharging into a subjacent sump, comprising a basin for the comminutor having a bottom wall adjacent the lower end of the comminutor and above the level of the sump, the basin including a comminutor housing of generally scroll form defining a flow passage of progressively diminishing width wrapped around the cylindrical comminutor and having an inlet at the large end, and a dry well offset at one side of the comminutor, at least a major portion of the comminutor housing comprising a wall structure lying between the comminutor and the dry well and being mounted for removal by displacement axially upwardly with respect to the comminutor thereby providing access to the comminutor from said dry well.

Claim 7

An installation as defined in claim 4 in which the dry well is provided with means for drainage into the sump.

Claim 8

A housing for a generally cylindrical sewage comminutor rotatable about an upright axis, said housing defining a flow passage wrapped around the cylindrical comminutor and having an inlet for sewage to be comminuted, at least a major portion of said housing comprising a removable wall structure having mounting flanges projecting at its upright edges to provide for removal by displacement axially upwardly with respect to the comminutor.

Claim 9

A housing for a generally cylindrical sewage comminutor rotatable about an upright axis, said housing defining a flow passage wrapped around the cylindrical comminutor and having an inlet for sewage to be comminuted, at least a major portion of said housing comprising a removable wall structure having mounting flanges projecting at its upright edges to provide for removal by displacement axially upwardly with respect to the comminutor.

Claim 10

A housing as defined in claim 6 and further having handgrips formed adjacent the upper edge of said removable wall structure to provide for manual upward displacement thereof.

Claim 11

A housing as defined in claim 6 and further having a mounting flange projecting downwardly from the lower edge of said removable wall structure.

Claim 12

A sewage comminutor installation for a generally cylindrical comminutor rotatable about an upright axis and discharging into a subjacent sump, comprising a basin for the comminutor having a bottom wall adjacent the lower end of the comminutor and above the level of the sump, the basin including a comminutor housing of generally scroll form defining a flow passage of progressively diminishing width wrapped around the cylindrical comminutor and having an inlet at the large end, a dry well offset at one side of the comminutor, at least a major portion of the comminutor housing comprising a wall structure lying between the comminutor and the dry well and being moUnted for removal by displacement axially upwardly with respect to the comminutor thereby providing access to the comminutor from said dry well, and grooved guides at the upright edges of said removable wall structure cooperating with the edges thereof for guiding the axial displacement movement of the removable wall structure.

Claim 13

A sewage comminutor installation for a generally cylindrical comminutor rotatable about an upright axis and discharging into a subjacent sump, comprising a basin for the comminutor having a bottom wall adjacent the lower end of the comminutor and above the level of the sump, the basin including a comminutor housing of generally scroll form defining a flow passage of progressively diminishing width wrapped around the cylindrical comminutor and having an inlet at the large end, a dry well offset at one side of the comminutor, at least a major portion of the comminutor housing comprising a wall structure lying between the comminutor and the dry well and being moUnted for removal by displacement axially upwardly with respect to the comminutor thereby providing access to the comminutor from said dry well, and grooved guides at the upright edges of said removable wall structure cooperating with the edges thereof for guiding the axial displacement movement of the removable wall structure.

Claim 14

A housing for a generally cylindrical sewage comminutor rotatable about an upright axis, said housing being generally of scroll form defining a flow passage of progressively diminishing width wrapped around the cylindrical comminutor and having an inlet at the large end thereof, at least a major portion of said housing comprising a wall structure mounted for removal by displacement axially upwardly with respect to the comminutor, and grooved guides adjacent the upright edges of the removable wall structure, the wall structure having guide flanges projecting from its edges into said grooved guides.

Claim 15

A housing for a generally cylindrical sewage comminutor rotatable about an upright axis, said housing being generally of scroll form defining a flow passage of progressively diminishing width wrapped around the cylindrical comminutor and having an inlet at the large end thereof, at least a major portion of said housing comprising a wall structure mounted for removal by displacement axially upwardly with respect to the comminutor, and grooved guides adjacent the upright edges of the removable wall structure, the wall structure having guide flanges projecting from its edges into said grooved guides.

Claim 16

A housing as defined in claim 10 in which the removable wall structure has a flange projecting downwardly at its lower edge, and a grooved socket receiving the downwardly projecting flange.

Claim 17

A housing as defined in claim 10 in which the housing is formed of fiber reinforced polyester resin material.