Lumber treating mechanism

Coating apparatus – With heat exchange – drying – or non-coating gas or vapor... – To remove or spread applied coating by gas blast

Patent

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Details

118423, 118DIG9, B05C 310

Patent

active

041844491

ABSTRACT:
A conveyor is arranged to pass lumber strips through a tank of treating liquid and includes pairs of upper and lower flexible lines arranged to receive lumber pieces therebetween. Hold-down apparatus is engageable with the upper flexible lines and is arranged to force such upper lines toward their lower lines to frictionally hold lumber pieces between the upper and lower lines and also to force the assembly of upper and lower flexible lines and lumber pieces down below the liquid level in the treating tank for coating the lumber pieces during the pass of the conveyor through the tank. In a preferred arrangement, the flexible lines comprise resilient type ropes wherein the conveyor assembly is forced down below the liquid level by a stretching of the ropes. The hold-down apparatus is pivotally supported adjacent one end of the tank and has longitudinally spaced pulleys for guiding the ropes, these pulleys being arranged to vary the submerged length of travel by pivotal adjustment of the hold-down apparatus. The conveyor mechanism is arranged to support lumber strips of varying lengths. Also included in the present mechanism are additional treating apparatus which removes excess treating liquid and which dries the lumber strips, all of such mechanism comprising an in-line arrangement utilizing a minimum of manual handling.

REFERENCES:
patent: 533543 (1895-02-01), Loughborough
patent: 1140873 (1915-05-01), Carter
patent: 1673686 (1928-06-01), Kremmling
patent: 3429652 (1969-02-01), Varga

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