Abstract: An adjustable manhole cover support frame that includes a base unit, a top support unit telescopically arranged on the base unit and screw jacks interconnecting the two units permitting selectively adjusting the relative telescopic position of the top unit on the base unit. The base unit has an open ended sleeve projecting upwardly from a flange utilized to secure the base unit to the top end of a manhole vertical conduit. The top support unit has a top annular plate from which depends three cylindrical walls defining a first outer cavity telescopically receiving the sleeve of the base unit and inwardly therefrom a second cavity with holes in the bottom to receive the upper ends of threaded bolts that provide the screw jacks for adjustment.

Abstract: A free standing modular office furniture system that includes geometrically shaped panels each of which is right angular, and has a minimum of three corners that are either 90.degree., 45.degree., or 135.degree., a right angle triangular leg assembly and connecting plates. Selected corners of the panels have a recess that is a right angle isosceles triangle that receives a plate which is connected to the leg by a bolt extending through the leg. The leg is a two-part aluminum extrusion and selected plates have two, three or four times the surface area of a recess and fit into that many recesses which also corresponds to the number of panels in abutting edge relation. The selected plates overlap the panels joining the same together as they are clampingly engaged between such plate and the leg associated therewith.

Abstract: An information display device wherein there is a base plate with information bearing face plates detachably mounted thereon by one or more spline elements that press-fit with formations on each of the opposing faces of the base and face plate. End caps are optional as are also separator strips between panels where there are a number of panels mounted on one base plate. Splines press-fit into grooves in each of the base plate and face plate. In one embodiment the spline is U-shaped receiving therein a rib on one member and projecting into a groove formed between two ribs on the other of the two plates.

Abstract: A low loss composite spider arrangement for use in inductive electrical epment and an air core reactor incorporating the same in which a non-conductive or a conductive material having very low relative permeability and relatively high resistivity is used to fulfill the mechanical and structural requirements of the spider, and a relatively small amount of electrical conducting material, bonded to and preferably electrically isolated therefrom, is used to fulfill the electrical requirements of the spider.

Abstract: A pry type hand tool for making drain holes in the bottom wall of a lid receiving channel on the top rim of a paint can. The tool has a handle portion and a bifurcated end where the two legs are offset laterally and longitudinally. One leg has an inwardly turned end, directed toward the other leg, forming a shallow channel and the other leg has a sharpened tip and knife like cutting edge.

Abstract: A saw mill head saw having a thin-kerf circular saw blade whose diameter is in the range of 34 inches to 60 inches mounted in fixed position on a power driven mandrel for rotation therewith. The mandrel is journalled on bearings that can be adjustably positioned selectively to vary the angle of mandrel relative to the direction of travel of a log that moves while being cut. The saw blade is guided by a rigid robust saw guide unit located at the in-feed side of the saw and at a position below a saw cut made during operation of the head saw. The saw guide has a channel or gap portion receiving therein a selected portion of the saw blade and it is provided with a first group of discrete spaced apart blade contact pads and a second similar group with such groups being disposed on respective opposite sides of said saw blade.

Abstract: An air core inductor having mounted thereon a band of material of selected characteristics providing only an electromagnetically coupled resistance that reflects back into the windings of the inductor for filtering applications.

Abstract: A portable device for resurfacing in situ a fifth wheel king pin depending from the underside of a transport trailer. The device includes an elongate member, which is vertically disposed when in use, engagable at its upper end with the pin and supportable at its opposite end on a surface below the pin. Pivotably mounted on the elongate member, for swinging thereabout, is a first arm. Movably mounted on and extending from the end of the first arm remote from the elongate member is a second arm. The second arm is adjustably positionable relative to the first arm. The second arm includes, toward its end remote from its movable connection with the first arm, a device, preferably an adjustably mounted power driven grinder, for resurfacing the king pin.

Abstract: A vent hood mountable on the soffit of a building for exhausting a room ventilating system to atmosphere and a building having a room ventilating system connected to such soffit mounted vent. The ventilating system is a conventional power driven forced air unit with an air inlet communicating with the room to be ventilated and an exhaust outlet. The exhaust outlet is connected to the soffit mounted vent hood by a flexible conduit. The vent hood has a pivotally mounted flap valve normally closed and remains closed, when not in use, by the force of gravity. The flap valve is upstream from the discharge opening from the vent hood and preferably slopes, when in a closed position, relative to the vertical when the vent hood is mounted in situ.

Abstract: A felling head having a combination tree accumulator and abutment apparatus which eliminates the need for additional grapple arms to secure accumulated trees thus simplifying and lightening the felling head.

Abstract: A process for the continuous manufacture of seamless tube by confining a selected length of metal strip in the form of a tube and with at least two longitudinal abutting edges and completely melting a selected length of such tubular form to form a seamless tube and cooling the formed seamless tube. The cooling is preferably in a controlled atmosphere of nitrogen and the temperature is reduced to about 700.degree. F. before further processing takes place. In a preferred process the material is a single strip of metal formed into a tube with only one longitudinal seam and it is moved continuously through a mould heated by induction heating selectively controlled to cause the tube to preheat to a selected temperature and then be subjected to a temperature bringing the metal to its molten state to form a seamless tube and while the seamless tube is moving it is cooled downstream from the melting zone solidifying the metal and bringing it to a selected temperature before exiting the mould.

Abstract: A paint brush or the like coating applicator having the coating applying portion thereof encompassed in a removably mounted bag made of cloth. The bag has an open end that is detachably secured to the head of the brush. A rolled or enlarged edge on the open end of the bag serves as a drip collar. A film strip or plate member device is provided to facilitate inserting the brush into the bag.

Abstract: Used paper and paper products are recycled into fiberboard formed under conditions of pressure, heat and injection of steam under pressure for sufficient time to render the fiberboard dimensionally stable.

Abstract: A boom mountable tree processing head that incorporates a number of improvements, one of which is the ability to process more than one tree at a time. To do this, there is an accumulator type grapple arrangement and/or the trees are longitudinally offset for processing so that their diameters are essentially the same where they are gripped by the tree feed means. The accumulator grapple disclosed has two sets of grapples spaced apart from one another longitudinally along the processor with the arms of one grapple set being longer than that of the other. The grapple with the shorter arms also serves to press the tree against an improved endless conveyor type drive that propels the trees endwise for processing. Another improvement is the endless drive that includes two spaced apart driven endless chains located respectively on opposite sides of the feed path and interconnected by a plurality of somewhat resiliently flexible shoes. The processing head is hydraulically operated.

Abstract: A self-unloading load hauling box for use on a towed carriage or carried by a powered mobile vehicle wherein the box is a rigid unit having a bottom wall with a floor plate and side walls and front end wall projecting up from the rigid bottom wall. An endless belt is looped around the bottom wall and runs on a driven roller at the rear end and an idler roller at the front end of the box. The endless belt is driven through an arc of selected length at spaced apart intervals to unload contents from the box. The jerky action from intermittently driving the belt has a tendency to cause a vibration, loosening the content in the box and thus results in a relatively even discharge during unloading. Between the upper run of the endless belt and the upper surface of the floor is a friction reducing pad which also absorbs shock loads tending to reduce damage to the belt and/or floor when loading heavy chunk material.

Abstract: An improved apparatus for use in association with a vessel to facilitate raising the vessel and/or cargo carried thereby should it become sunken. The apparatus is readily attachable to or mountable on any equipment and includes a float having an upper portion with the upper portion being of larger cross-sectional area. The bottom portion has a recess therein. A cable drum is located in the recess and journaled for rotation to pay out a light duty line wound thereon. The light duty line has a knob attached thereto and which is also attached to a heavy duty lifting cable attached to secure lift points on the vessel. The float is mounted at an appropriate location on the vessel, or cargo and should the vessel or cargo (as the case may be) sink, it floats to the surface. Information concerning the sunken object size, equipment for retrieval, etc. is on a plate attached to the float.

Abstract: A multi component wood construction member that has an X-beam appearance, and useful as a structural beam or post. The member has an elongate web section with flange members securely attached to opposite sidewalls thereof that, in beam cross-section, the web is inclined. One surface of each of the flanges respectively forms all or a major part of the top and bottom surfaces of the beam. The other-surfaces of each of the flanges are respectively in contact with and fixed to opposite sides of the web and preferably extend inward of the web to a depth equivalent to at least one half the depth of the beam.

Abstract: Method and apparatus for non-destructive testing the quality of manufactured wood panels which includes supporting the panel so as to have a portion thereof in cantilevered fashion. The cantilevered portion of the panel is caused to vibrate so as to include complex vibrations that include both twisting and bending. The vibrations in the panel are sensed providing an output signal that is fed to analyzers and computers to determine from the simultaneously induced bending and twisting vibrations respectively the modulus of elasticity and shear modulus of the panel. Two different forms of apparatus are illustrated, one of which requires the panel to be stationary while being tested and the other in which the panel moves continuously while vibrations are induced and the induced vibrations sensed.

Abstract: A modular office furniture system of hexagonal configuration is disclosed provided by walls formed from detachably interconnected posts, beams and panels. The hexagonal configuration provides efficient work space for workers and is laid out on a simple equilateral triangular grid. There can be anything from a single module to a multiplicity of modules arranged in groups or clusters. Visual and acoustic privacy is provided by acoustical panels, stackable one on top of the other and slidable into grooves on spaced apart posts. The posts have a lower portion to which there is attached a beam and such beam is grooved to receive an edge portion of the panel that provides the work surface. File and storage systems and shelves are mounted on the acoustical pad panels. Provision for electrical and communication wiring is provided in concealed channels through the beams and hexagonal posts. Hexagonal shaped ambient light fixtures are mounted on selected posts.

Abstract: A tree shear where the shear blade is moved by a power mechanism that includes a link and lever so arranged that the force available matches approximately, at all times, the force required to pass the shear blade through the tree to sever the same.