Illinois Tool Works Inc.

Marian Olma

Richard J Ernst

Sigismund G Paul

Frederick G Sevald

A pneumatically actuatable dispenser for a two-part adhesive, as provided within a cartridge having two chambers and having a mixing nozzle mounted upto a first end, each chamber having a plunger accessible from a second end. A front frame holds the cartridge. A piston is arranged to be selectively driven within a cylinder in a forward or reverse direction. A pair of piston rods operate in tandem so as to drive the plungers toward the nozzle, when driven conjointly with the piston in the forward direction. A first valve, when actuated, delivers pressurized air from driving the piston in the forward direction. A second valve, when actuated, delivers pressurized air for driving the piston in the opposite direction. A third valve, when actuated while the first valve is actuated, vents pressurized air from the cylinder. A first control rod, which moves conjointly with the piston, and a second control rod may be selectively linked to each other for conjoint movement or unlinked from each other, by means of a linking lever and a cam. An actuator, which is adjustably positionable along the second control rod, actuates the third valve after conjoint movement of both control rods and the actuator, along with the piston, through means of a distance correlating to a controlled dose of the mixed parts of the adhesive. A fourth valve can be manually actuated so as to divert pressurized air, by means of a hose, to a nozzle for blowing water or debris from a hole which is to receive the adhesive.

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Chicago, IL, United States of America

Marian Olma