Robin Adair Plumbley

US Patent:

51431319, Sep 1, 1992

Filed:

Oct 25, 1991

Appl. No.:

7/782432

Inventors:

Christopher D. Seigneur - West Linn OR
Robin A. Plumbley - Portland OR

Assignee:

Blount, Inc. - Montgomery AL

International Classification:

B27M 100
B27B 100
A01G 2308

US Classification:

144364

Abstract:

A fluid spraying saw bar, and a chain sawing apparatus, such as a tree harvester, having such a saw bar are provided for selectively applying a predetermined fluid pattern of urea on a tree stump during felling, and of paint on a log end during bucking. A bar member supports an endless saw chain and has an elongate chamber therein to receive pressurized fluid from a harvester reservoir. Plural fluid emitting holes extend from the chamber to at least one side surface of the bar member. A tubular or a dual valve plate flow controller is slidably received in the chamber operatively engaged by a harvester actuator to control flow through the fluid emitting holes. For a rot-preventing urea spray, the pattern is adjusted for logs of varying diameter. For a marking spray, a striping spray pattern is selected in response to a harvester computer generated signal to indicate log length, diameter, mill designators, and the like. A method is also provided of selectively and controllably providing a predetermined spray pattern of fluid on a surface formed by the cutting action of the chain saw during cutting.

US Patent:

50503030, Sep 24, 1991

Filed:

Dec 14, 1990

Appl. No.:

7/628421

Inventors:

James B. Sinclair - Waterloo, CA
Paul W. Pink - Kitchener, CA
Michael D. Harfst - Milwaukie OR
Robin A. Plumbley - Portland OR

Assignee:

Blount, Inc. - Montgomery AL

International Classification:

B23D 5904

US Classification:

301234

Abstract:

An improved saw bar and a chain sawing assembly includes a frame which houses a drive engine or motor and receives the saw bar, an endless cutting chain, and a sprocket mechanically coupling the drive engine to the cutting chain. The saw bar includes a bar member having a slot formed therein through at least a portion of the thickness of the bar member, with the slot extending from an attachment end to a nose end of the bar member. The saw bar also has a channel assembly, such as a tubular channel assembly, positioned in cooperation with the slot to deliver fluid from the attachment end to a channel outlet. In one embodiment, the saw bar has an idler sprocket pivotally mounted within a sprocket mounting slot formed at the bar member nose end. The channel outlet opens into the sprocket mounting slot to deliver lubrication fluid to the sprocket teeth. In an alternate embodiment, the channel outlet comprises a plurality of apertures along the length of an exposed wall of the channel member.