Edward W Harris

US Patent:

42597609, Apr 7, 1981

Filed:

Jul 16, 1979

Appl. No.:

6/057892

Inventors:

Edward Harris - Pittsburgh PA

Assignee:

Koppers Company, Inc. - Pittsburgh PA

International Classification:

C10B 4304

US Classification:

15 93A

Abstract:

The cleaning apparatus includes: (A) a cleaning head having a plurality of angled side by side chisel-like blades, the end sections of which are affixed to a pivotable member having one end portion secured to a frame member, said pivotable member allowing said blades to traverse an arcuate path, said cleaning head having a centrally located pivotable member for affixing cleaning head to a carriage and allowing for uniform loading of blades against surface to be cleaned; (B) a carriage for transporting the cleaning head in a reciprocal path across the periphery of an open door surface to be cleaned, pivotably connected to the cleaning head by the centrally located pivotable member and means for driving said carriage; and (C) a supporting ram affixed to the carriage on the side opposite from the cleaning head, and means for moving the carriage and cleaning head toward and away from the surface to be cleaned.

US Patent:

42806810, Jul 28, 1981

Filed:

Jan 9, 1980

Appl. No.:

6/110782

Inventors:

Edward Harris - Pittsburgh PA

Assignee:

Koppers Company, Inc. - Pittsburgh PA

International Classification:

F16K 3144
F16K 3112

US Classification:

251229

Abstract:

A disc-type valve is disclosed which provides a design by which the valve disc can be positively and uniformly lifted laterally off the valve seat so as to prevent abrasion of the sealing surface and/or the valve seat which might otherwise be caused by transverse movement of the valve disc in relation to the valve seat. The opening and closing movement of the valve seat is controlled by and operable in direct relation to a pivotable operating member extending through the valve body.

US Patent:

42305322, Oct 28, 1980

Filed:

Jul 16, 1979

Appl. No.:

6/057891

Inventors:

Edward Harris - Pittsburgh PA

Assignee:

Koppers Company, Inc. - Pittsburgh PA

International Classification:

C10B 2512

US Classification:

202248

Abstract:

The oven door comprises a latching mechanism having a centrally located spring contained within a spring box to exert a force against said door. A pair of hinge links are pivotably connected to the door hinge shaft and to the spring box. A shaft link is keyed to said shaft and pivotably connected to a latch bar of a yoke type U configuration. A primary toggle link is located on either side of said spring box and pivotably connected on one end to said spring box and door hinge links and on the other end to the latch bar legs, means to limit rotation of primary toggle links and spring box around pivot connections is provided, a latching bracket is affixed to a stationary member for engaging latch bar to secure door to door chamber frame, and actuator means are provided for turning said shaft to open and close the door. In a preferred embodiment a pair of secondary toggle links are located one on either side of spring box, and pivotably connected at one end to latch bar connections which are common to primary toggle links, and at other end they are connected to a stem yoke mounted between said secondary toggle links, said stem yoke having a clearance hole for accepting a stem affixed to door. In operation to open the door, simultaneously with rotaton of shaft 10, shaft link 32 rotates through bored hinge links 22 to disengage latch bar 26 from latch bracket 42, primary toggle links 24 cross center line of door 2 and threaded stem 12, and continue until restrained by nuts 18 and the exerted force of spring 14 is relieved a predetermined amount.

US Patent:

40734706, Feb 14, 1978

Filed:

Jan 4, 1977

Appl. No.:

5/756594

Inventors:

Edward Harris - Pittsburgh PA

Assignee:

Koppers Company, Inc. - Pittsburgh PA

International Classification:

F16K 2500

US Classification:

251163

Abstract:

A pivotal disc shut-off valve is disclosed wherein a disc is pressed against a peripheral seat within a valve body to halt the flow of fluid material in a flow line. The disc is operated by a system of linkage arranged so as to allow the disc to be linearly moved in relation to the seat as a separate and distinct motion from pivotation of the disc. In closing the valve, a provision is made by which the disc is rocked as it contacts the seat to insure full closure. All motions of the disc are positively directed, with no reliance on the force of gravity, thus allowing the valve to be used in all positions.