Dispensing – With cutter and/or punch
Patent
1980-03-10
1981-11-10
Scherbel, David A.
Dispensing
With cutter and/or punch
222387, 222561, B65D 4738, B67D 546
Patent
active
042993369
ABSTRACT:
An improved caulking gun has a usual semicylindrical frame with a disc-shaped rear wall and a split front wall. A handle and trigger mechanism is mounted on the rear of the frame for advancing a plunger forwardly within the tube to discharge caulking material from the tube through the spout. A guide channel is mounted on and extends along the bottom of the frame and curves upwardly along and is spaced from the split front end. A flat strip of flexible metal is slidably mounted in the channel and has a front cutting edge which cuts partially through the plastic spout when a new tube is placed in the frame. The outer end of the metal strip blocks the flow of caulking material from the spout. A lever is pivotally mounted on the guide channel and is engaged with the metal strip for moving the strip between a flow-blocking position and an open material-discharge position. The cut area of the spout is clamped in a U-shaped saddle at the end of the guide channel by a keeper plate, which in addition to preventing the spout from separating at the cut area, deforms the spout into a generally squared configuration to provide a positive seal with the edges of the outer end of the metal strip. The metal strip can be moved repeatedly between open and closed positions during a caulking operation to more accurately control the discharge of caulking material from the spout.
REFERENCES:
patent: 1846167 (1932-02-01), Wallen
patent: 2244071 (1941-06-01), Landrus
patent: 2317299 (1943-04-01), Peters
patent: 2528662 (1950-11-01), Miller
patent: 2659517 (1953-11-01), Reinhardt, Jr.
Melern Development
Scherbel David A.
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