Abstract: A method of heat treating e.g. an end zone of each of a plurality of metal articles such as fasteners comprises the steps of feeding each of the plurality of articles onto a conveyor means by which the articles are conveyed in succession in a generally upright orientation, towards and through a heat treatment apparatus where the zones are subjected to heat and conveying the articles from the heat treatment apparatus to a delivery point.

Abstract: A tool for driving gutter nails through the ends of gutter brackets to secure a gutter to a gutter board includes a nail guide which engages a bracket of the gutter and holds a gutter nail and a nail driver which when struck with a hammer delivers the impact to the nail and drives it from the guide. When engaged with the bracket, the nail guide aligns the nail with holes in the end of the bracket, so that the driven nail passes through the end of the bracket and into the gutter board.