Sidewall applicator for heat fusion of a fitting to a plastic pipe

Abstract

A sidewall applicator for heat fusion of a fitting to a plastic pipe has first and second spaced apart paralleled main shafts each having a lower end that is supported by rounding shells to the exterior of the plastic pipe so that the main shafts are supported in a plane that includes the pipe tubular axis. A housing is slidably supported by and positioned between the main shafts. A hydraulic displaceable force piston extends from the housing in the direction towards the pipe. A fitting holder is removably attached to the force piston which, in turn, removably supports the plastic fitting to be secured to the pipe. Brake arms are pivotally supported to the housing, each having an outer end that releasably engages one of the main shafts. An actuator piston supported in the housing is in closed communication with a fluid filled passageway within the housing, the fluid passageway being in communication with the brake pistons and the force piston. A threadably extended shaft engages the actuator piston and has a knob so that by rotating the knob the force piston is displaced applying hydraulic pressure to the fluid passageway to, in turn, displace the brake pistons and the force piston to simultaneously lock the housing to the shafts and to drive the force piston downwardly to force a fitting held thereby into engagement with the pipe.