Multiple dose paste dispenser

Claim 1

A multiple dose paste dispensing gun comprising a frame having a handle affixed thereto, a piston rod having a piston on the front end thereof, means in said frame for guiding said piston rod for longitudinal movement thereon, a clamp on said frame for securing cartridges to extend therefrom in longitudinal alignment with said piston rod, a trigger, pivot means pivoting said trigger in said frame to be squeezed into said handle, rachet means above said pivot means and interconnected between said trigger and said piston rod to advance the rod and piston into a cartridge as said trigger is squeezed into said handle, said handle being formed with a plurality of openings below said pivot means at locations successively encountered by an edge of said trigger as said trigger enters into said handle during squeezing thereof and a stop pin removeably fitted into one of said openings to engage said trigger edge upon a given squeezing movement of said trigger whereby the distance the trigger may be moved from a fully extended condition is easily and accurately controlled to provide accurate dispensing of various paste dosages from said cartridge.