This is a manual hedge trimmer which has a push pull action. It is not a very common garden tool possibly a lot slower to use than clippers. It dates from mid 20th century.This is quite a rare tool.This tool is consists of a metal bar with a row of prongs attached . A blade on one end is moved along the length of the metal bar thereby trimming the bush. There is a wooden handle attached to the metal bar and a wooden ball and spring on the righthand side.Code Half Time. Made in England Pat App No 16418/49warrnambool, tool, hedgetrimmer, code halftime