Log cleaning and barking
AssigneeClement Ratelle
InventorsClement Ratelle, Pierre Rouillard
Life of this patent
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Abstract
A method and a machine for cleaning and barking a log using fluid jets wherein the bark is first cut into longitudinal strips by a first series of fluid jet nozzles predominantly arranged to produce a cutting impingement action and wherein the anteriorly formed bark strips are peeled from the wood of the log by a second series of fluid jet nozzles predominantly arranged to produce a peeling action. The machine includes an automatic device to adjust the position of the fluid jet nozzles relative to a diametrical size of the log.
Claims13
In a log cleaning and barking machine provided with a conveyor producing endwise displacement of a log in a selected direction along a path extending through the machine, the combination comprising a first series of fluid jet nozzles surrounding the log path, converging radially inward towards the latter, and positioned for impingement of bark cutting fluid jets in circumferentially spaced-apart relationship and relatively orthogonally onto the bark of said log, a second series of fluid jet nozzles surrounding the log path and spaced down the latter relative to the first series and conically converging inward towards the log path and in opposite direction relative to said selected direction, and high pressure fluid supply means connected to said fluid jet nozzles and arranged to produce high pressure jets in the latter, whereby to cut said bark into strips longitudinally of said log with said first series of fluid jets and to thereafter peel said bark strips from the wood of said log with said second series of fluid jets.
A method of barking a log comprising displacing a log endwise in a selected direction along a log path, projecting a first series of fluid jets in radially inward convergence in circumferentially spaced-apart relationship and orthogonally onto the bark around a log to produce bark strips longitudinally of the log and thereafter projecting a second series of fluid jets in conically inward convergence and longitudinal facing relationship relative to said selected direction of displacement of the log for peeling off the oncoming bark strips previously cut by the first series of fluid jets.
Dependencies are inferred from the claim text.