Weyerhaeuser Company Limited

Mearle J Waite

Frank Wislocker

An easily cleaned trigger-actuated gun of simplified construction for applying a multi-component resinous patching or adhesive compound system to a workpiece is described. An internal valve positioner, connected to the trigger mechanism by means of an operating rod, regulates flow of compound from the gun, between zero, intermediate or full flow rates in response to trigger position, by adjusting clearances between simple flow checking ball elements and their valve seats at each component inlet into the gun. The metered components flow through a static mixer tube, onto the workpiece. A dripless feature is provided by the addition of a cylinder component that remains present in the valve chamber of the gun during operation but withdraws from the chamber after compound flow from the gun is halted, in response to the same release of trigger that shuts off component flow, causing a slight vacuum in the gun sufficient to pull back into the discharge end of the gun the last drop of adhesive not adhering to the workpiece.

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Longview, WA, United States of America

Mearle J Waite