Abstract: A device for positioning a first element relative to a second element which comprises: a horizontal panel on the upper face of which the first element is able to be disposed and which has a housing able to hold the second element; and first abutment against which the first element is able to come into abutment in a first adjusting direction and second abutment against which the first element is able to come into abutment in a second adjusting direction perpendicular to the first adjusting direction, the first and second abutment being mounted on the panel projecting from the upper face of the panel, The device comprising an arrangement for adjusting the position of the first abutment in the first adjusting direction and an arrangement for adjusting the position of the second abutment means in the second adjusting direction with respect to the position of the housing in the panel.

Abstract: A heat exchanger is presented that provides for mixing of a process fluid to prevent localized spikes in temperatures. The heat exchanger includes a mixing chamber within the exchanger, where a first process fluid passes from process tubes after being partially heated. The heat exchanger further includes an intermediate shell for passing a second process fluid into the fired heater and for exchanging heat with the first process fluid. The fluid flows from the mixing chamber to other process tubes for further heating.

Abstract: A machine for shaping curved wooden molding includes an arbor mounted on a housing for receiving a cylindrical workpiece formed from four lengths of curved molding blanks, a drive for rotating the arbor, and a pivot arm carrying a blade at the top end thereof for movement towards and away from a workpiece mounted on the arbor, whereby, when the top end of the pivot arm is rotated towards the arbor, the blade engages the rapidly rotating workpiece to shape the latter.

Abstract: A machining unit, typically for wood panels, features a work table afforded by a body of prismatic geometry having at least two faces and rotatable about an axis which is also its instantaneous center, in such a way as to establish at least two movable and tiltable work surfaces; the prismatic body is carried within a frame encompassing the tool and combining with the two faces to create respective independent work areas, one in which panels are fed to and from the unit, the other coinciding with a station at which machining takes place, and where the waste and chips generated by machining are cleared from the table and the work. The prismatic body also functions as the main barrier separating two work environments, the one an open external space occupied by the operator, the other an enclosure disallowing access to the operator while machining is in progress.

Abstract: A carving jig (10) is provided with a base (11) having a bearing (17) in which a projecting spindle (18) is journalled for rotation, the spindle having facilities to allow a workpiece (24) to be attached, either directly or through the provision of an intermediate chuck (23), the jig also having a flat mounting surface (12, 13), which is normal to the axis of spindle (18) rotation, and the spindle (18) having an indexing disc (26) attached to it, so that it can be rotated in increments, but restrained against rotation during carving.

Abstract: An apparatus and method for forming a workpiece or chair mat with cleats on the underside thereof, and with a marginal peripheral area void of cleats, and for trimming the edge of a generally planar workpiece. A rotatable work table is provided for positioning the workpiece. A router head includes an inclined router blade engageable with the edge of the workpiece to form a beveled ramp edge thereabout. A template is positioned between the workpiece and the work table, and the router head has a cam follower engageable with and movable along the edge of the template for guiding the router blade along the edge of the workpiece during rotation of the work table. A cooling medium is directed toward the area of engagement between the router blade and the edge of the workpiece. The depth of cut is controlled by a cam disk mounted on the bottom of the router head engageable with the top of the workpiece.

Abstract: A fixture for providing positive control over a workpiece as it is being acted upon by a cutting or finishing tool. A base having a flat working surface is provided with a fixed guide member having a contoured control surface formed along the periphery thereof. A workholder is slidably supported upon the working surface of the base and is arranged to move in abutting contact against the control surface of the guide whereby a prescribed motion is imparted to a workpiece supported in the holder. In one form of the invention, the workholder is mounted upon a turntable that is rotatably supported in a circular guide whereby the work is caused to rotate about a fixed axis.

Abstract: An automatic shaping device of the type including a table with a power-driven shaping tool projecting therefrom and a power-driven workpiece carrying member slidably mounted thereto with template carrying means thereon, the template carrying means being adaptable for engagement with a pre-cutting assembly wherein workpieces being shaped according to a pattern defined by the template is pre-cut by the pre-cutting assembly prior to being shaped to a finished form by the shaping tool.