Abstract: The invention relates to a method for roasting small quantities of coffee, in which the unroasted coffee is fed into a roaster and supplied with hot air via a controlled burner until roasting is completed; after roasting is shut off, the roasted coffee is pre-cooled with water and then removed to a cooling screen and cooled with air. The invention is characterized in that the coffee is fed into the roasting chamber (12) of the roaster, at a readiness temperature (t.sub.B) that is kept constant or regulated, after a feed device (80, 81) for the unroasted coffee has been unblocked for further filling, after the removal of the previous batch of roasted and cooled coffee.

Abstract: A guiding rail arresting device for motor driven hand saws, especially motor chain saws, in which a sword-shaped guiding rail provided with a guiding groove extending in the longitudinal direction of the guiding rail is adapted to be clamped transverse to the plane of said rail against an abutment having associated therewith a counter guiding member for cooperation with the flanks of the guiding groove. The counter guiding member for at least one of the groove flanks is formed by a supporting element adapted when clamping the rail against the abutment automatically to be clamped against the groove flank.