Manually portable container

Claim 1

A manually portable container for dispensing molten plastics material, the container having an outlet end with an outlet nozzle at the outlet end and further comprising: a body defining a cylinder; a piston within the cylinder to define a cylindrical reservoir for a plastics material extending from one side of the piston to the outlet end of the container; means to move the piston along the cylinder alternatively for increasing and decreasing the capacity of the reservoir; heating means for heating plastics material within the reservoir; heat insulating means around the cylinder; a closure for the reservoir, the closure movable into and out of a reservoir closed position; and locking means to hold the closure in the closed position and comprising a plurality first and second complementary screw-threaded members, the first members spaced-apart around and exteriorly of the reservoir, each first member engageable with a second member through aligned slots in the body and closure with the closure in the closed position and with the first members slidably held within guides provided upon the body to allow movement of the engaged members along the slots, the closure slots having narrow and wide sections with the engaged members holding the closure in the closed position when located through the narrow slot sections and permitting closure movement out of the closed position when the engaged members are in the wide slot sections by movement of the closure away from the second members.