Abstract: A guide apparatus for guiding a woodworking router relative a workpiece, comprising: a base for engaging with a workpiece or worktable carrying the workpiece; a guide frame coupled to the base and having at least one guide defining a linear guide path; a router housing slidably engaged with the guide for movement along the guide path relative the guide frame in an engaging direction towards the base and a disengaging direction away from the base, the router housing being configured to receive a woodworking router so that, in use, a router bit of the router extends from the router housing towards the base; and an actuation mechanism having a pivotable handle for receiving an input force from an operator to move housing along the guide path. The actuation mechanism is configured so that an input force is required to raise the housing and the router received therein against gravity.

Abstract: There is disclosed guide apparatus for guiding a wood-working router relative a workpiece, the guide apparatus comprising: a base (5.1) for engaging with a workpiece or worktable carrying the workpiece; a guide frame (2.1, 2.3) coupled to the base (5.1) and having at least one guide (5.2) defining a linear guide path; a router housing (1.2) slidably engaged with the guide (5.2) for movement along the guide path relative the guide frame in an engaging direction towards the base (5.1) and a disengaging direction away from the base, the router housing (1.2) being configured to receive a woodworking router so that, in use, a router bit of the router extends from the router housing (1.2) towards the base (5.1); and an actuation mechanism 3 having a pivotable handle (3.7) for receiving an input force from an operator to move housing (1.2) along the guide path. The actuation mechanism (3) is configured so that, in use with the guide apparatus in an upright configuration in which the router housing (1.

Abstract: Disclosed are systems and methods for monitoring and controlling a real-time oxidation-reduction potential in a hot water system to inhibit corrosion in the hot water system. The method includes defining one or more operational protective zones in the hot water system. One or more of the operational protective zones includes an oxidation-reduction potential probe that is operable to measure a real-time oxidation-reduction potential in the hot water system at operating temperature and pressure. The probe transmits the measured real-time potential to the controller, which assesses and interprets the transmitted potential to determine whether it conforms to an oxidation-reduction potential setting. If the measured potential does not conform the oxidation-reduction potential setting, the controller is operable to feed or remove one or more active chemical species into or from the hot water system and further operable to change at least one system parameter.

Abstract: A method of tracing process printing fluids is described and claimed. The process printing fluids are selected from the group consisting of One-Component Fountain Solutions, Two-Component Fountain Solutions and Web Release Agents. The tracer used is capable of being detected fluorometrically in each process printing fluid of interest.

Abstract: A method of tracing process printing fluids is described and claimed. The process printing fluids are selected from the group consisting of One-Component Fountain Solutions, Two-Component Fountain Solutions and Web Release Agents. The tracer used is capable of being detected fluorometrically in each process printing fluid of interest.

Abstract: The use of an isomer of anthracene disulfonic acid as an inert fluorescent tracer is described and claimed. The utility of this type of inert fluorescent tracer in boiler systems to trace unwanted carryover of boiler water into a steam line is also described and claimed.

Abstract: A process is described for the preparation of aryl .alpha.-keto acids in which the corresponding methyl ketone or aldehyde is oxidized in aqueous solution with an inorganic nitrite salt and hydrochloric or sulfuric acid.