Abstract A drum barker including an elongated drum arranged to rest in a horizontal position and supported for rotation by several systems of motor driven wheels placed in a row on both sides of the drum and for axial movement by a set of wheels engaging a pair of guiding rings situated on the drum. The drum is adapted to receive through one end the timber to be debarked. The inner surface of the drum is provided with projections for removing the bark, while the outer surface is provided with slots through which the detached bark is discharged. A spray system is included for spraying a liquid on the timber either as it enters the drum to soak the bark or as it leaves the drum to facilitate the removal of loose bark from the timber, or both. The spray system may also spray the rotating and axially movable drum and the system of wheels to reduce the friction between the outer surface of the drum and its points of contact with the system of wheels.
Inventors
👤 R Tuuha
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-06 12:27
CPC Classifications
B; B27; B27L; B27L1/00; B27L1/02; B27L1/025
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
177 words
A drum barker comprising: a cylindrical drum including debarking means disposed internally thereof; a plurality of wheel systems disposed along opposite sides of said drum; said wheel systems including a plurality of rotatable wheels arranged to contact and support the outer periphery of said drum; at least the outer drum-contacting portions of said wheels being composed of a resilient, elastic material; said drum including guide ring means being disposed around the outer periphery thereof; said guide ring means including at least a pair of guide faces projecting outwardly from said outer drum periphery; each said guide face being arranged to contact a wheel portion to resist axial movement of said drum in a manner causing frictional wear of said wheel portion; and lubricating means for applying lubricant at areas disposed axially along said drum to reduce the wear between said wheels and said drum; said lubricating means including means for applying a lubricant to one of said guide face and said wheel portion to reduce the frictional wear of said wheel portion during rotation of said drum.
Claim 2
Dependent Claim
177 words
A drum barker comprising: a cylindrical drum including debarking means disposed internally thereof; a plurality of wheel systems disposed along opposite sides of said drum; said wheel systems including a plurality of rotatable wheels arranged to contact and support the outer periphery of said drum; at least the outer drum-contacting portions of said wheels being composed of a resilient, elastic material; said drum including guide ring means being disposed around the outer periphery thereof; said guide ring means including at least a pair of guide faces projecting outwardly from said outer drum periphery; each said guide face being arranged to contact a wheel portion to resist axial movement of said drum in a manner causing frictional wear of said wheel portion; and lubricating means for applying lubricant at areas disposed axially along said drum to reduce the wear between said wheels and said drum; said lubricating means including means for applying a lubricant to one of said guide face and said wheel portion to reduce the frictional wear of said wheel portion during rotation of said drum.
Claim 3
Dependent Claim
43 words
A drum barker according to claim 1 wherein: said lubricating means comprises a liquid conduit disposed above and extending axially along said drum; said conduit including a plurality of axially spaced discharge apertures for spraying lubricating liquid onto said areas along said drum.