Poly-pipe fusion machine

A machine for fusing a saddle-type, branch or T-junction fitting to a pipe, comprising:

• a first clamp for holding said pipe;
• a second clamp for holding said fitting;
• means for maintaining said second clamp oriented so that said fitting is axially orthogonal to the axis of said pipe and so that a bonding surface of said fitting is parallel to a surface to be mated on said pipe;
• a manually-operable plunger for moving said second clamp between a first position where said fitting is mated with said pipe and a second position where said fitting is separated from said pipe;
• said first position being selectable from a plurality of predetermined positions in order to accomodate a plurality of pipe or fitting sizes;
• said plunger being pivotally mounted to said second clamp at one end so as to arcuately move between a locked first position where a loading force is applied and a released position where
• said loading force is not applied;
• said plunger further having a plurality of pin stops spaced along its length at positions corresponding to said predetermined positions;
• a resiliently-loaded plate having a notch, the sides of which engage one of said plurality of pin stops when said plunger is moved to said locked first position;
• said loaded plate being arranged to bear against a respective one of said pin stops in each of said predetermined positions;
• said plate applying a force on said second clamp in a direction orthogonal to the pipe to the axis of said pipe during a fusion operation.