Abstract: A portable sheet metal joining apparatus is disclosed including a releasable tool carrying cartridge carried by a piston in a hand held gun which is powered by a booster of very compact design which uses standard compressed air to create high pressure hydraulic fluid to activate the gun.

Abstract: A block assembly is adapted to be removably fixed to a vertically disposed way of a machine having systems for automatically supplying lubricating oil to the way and for supplying a dissimilar liquid coolant to a workpiece; the block assembly serving to collect lubricating oil flowing downwardly along the machine way and prevent its contaminating the coolant. The block assembly comprises a multi-sectional block shaped to provide an oil collection reservoir adapted to be placed in flow communication with a separate oil collection tank or sump.

Abstract: The present invention relates to a tool cooling device for machine tools in which a plurality of cooling fluid distributing units are provided on a fixed shaft having a hole formed therethrough and communicating with a source of cooling fluid and each of the distributing units is connected preliminarily to one of the tools with oil holes which are accommodated in the tool magazine of a machine tool, whereby when selected one of the tools is engaged as such with the spindle, the cooling fluid is automatically supplied only to the tool engaged with the spindle.