Terry M Walker

US Patent:

57204187, Feb 24, 1998

Filed:

Aug 14, 1995

Appl. No.:

8/514772

Inventors:

Mark S. Timmerman - Elgin IL
Terry R. Walker - Bloomingdale IL
Richard J. Ernst - Palatine IL
Daniel L. Downey - St. Charles IL

Assignee:

Illinois Tool Works Inc. - Glenview IL

International Classification:

B67D 542

US Classification:

222309

Abstract:

An adjustable tool is disclosed for dispensing a two-part adhesive from a two-chamber cartridge having a mixing nozzle with each chamber having a plunger. Pistons are insertable into the respective chambers. Piston rods and a drive rod move conjointly with the pistons. A lever is pivotable on the frame. A feed nut is mounted loosely on the drive rod so as to be capable of gripping the drive rod when canted for moving the feed nut, the drive rod, the piston rods, and the pistons conjointly to a forward limiting position of the feed nut when the lever is actuated. A spring biases the feed nut backwardly and permits the feed nut to be canted, to grip the drive rod, and to be moved forwardly and conjointly with the drive rod, the piston rods, and the pistons when the lever is pivoted into an actuated position. A set screw threaded adjustably into a threaded hole in the frame defines a backward limiting position of the feed nut. The screw head engages an outer margin of the threaded hole, in a counterbore, to provide an inner limit to threading of the set screw.