Abstract: In paper-making operations and the like, fibers of wood are frequently transported through piping as an entrainment in steam. An apparatus is disclosed for separating such entrainment and removing the fibers at one station and the steam at another station. Rotating blades give the entrainment a circular or rotating action whereby the heavier fibers move outwardly by centrifugal force to contact the wall from which the blades scrape the fibers and hurl them to discharge. The fiber-free steam is removed along an axial line perpendicular to the direction of movement of the separated fibers under the influence of a second set of blades.

Abstract: The speed of pultrusion can be increased and the quantity of pultruded products can be improved by using a polyester resin composition containing 4-10 parts of certain cellulose acetate butyrate resins per 100 parts of polyester resin.

Abstract: An improved variable volume control assembly for conditioned air systems having an improved air flow amplifying sensing means that amplifies the difference between the total pressure and the static pressure and is sensitive at low pressures, an improved air flow collector-straightener, a critical ratio of the area of the inlet to the area of the expansion chamber, and a vortex filter strategically located within the assembly for maximum reduction of turbulence and noise.

Abstract: Stable chromated copper arsenate Type B wood preserving concentrates comprising a chromium additive, a copper additive and an arsenic additive with a total of from 5 to 45% oxides and sulfamic acid wherein said copper additive is present in an amount greater than will react with said chromium additive and said sulfamic acid is present in an amount that will inhibit the reaction of the excess copper additive with said arsenic additive.

Abstract: A gap-filling, adhesive composition is provided which is used between polymeric tie plates and the dapped area of a wood, concrete or polyethylene cross tie. This composition contains 65 to 75 wt. % of an asphalt having a softening point in the range of 75.degree. C. to 100.degree. C., 10 to 20 wt. % of a styrene butadiene copolymer having a molecular weigh of 60,000 to 91,000, and 7 to 25 wt. % of a processing oil having a viscosity in the range of 427 poises at 37.78.degree. C. to around 2,500 poises at 37.78.degree. C. and having a flash point in the range of 210.degree. C. to around 250.degree. C. The composition has a viscosity in the range of about 100 to around 300 poises at 150.degree. C.

Abstract: The oven door comprises a latching mechanism having a centrally located spring contained within a spring box to exert a force against said door. A pair of hinge links are pivotably connected to the door hinge shaft and to the spring box. A shaft link is keyed to said shaft and pivotably connected to a latch bar of a yoke type U configuration. A primary toggle link is located on either side of said spring box and pivotably connected on one end to said spring box and door hinge links and on the other end to the latch bar legs, means to limit rotation of primary toggle links and spring box around pivot connections is provided, a latching bracket is affixed to a stationary member for engaging latch bar to secure door to door chamber frame, and actuator means are provided for turning said shaft to open and close the door.

Abstract: A protective coating for bituminous paving surfaces is disclosed, which coating is comprised of a coal tar emulsion, water, and sufficient acrylate emulsion to provide a desired viscosity. Sand may be added to the composition to improve surface traction of coated bituminous surface.

Abstract: Ortho- and para-monoalkylated phenols and 2,4- and 2,6-dialkylphenols can be produced from phenolic compounds in good yields. The phenolic compound is reacted with an aldehyde having one to ten carbon atoms and a secondary aliphatic amine having a basic dissociation constant, pK.sub.b, of less than about 3.6 measured at 25.degree. C. The reaction is conducted in the liquid phase with at least a stoichiometric amount of the phenolic compound, the aldehyde and the secondary amine, or with an excess of the phenolic compound with the stoichiometric amounts of the aldehyde and the secondary amine. The reaction is conducted at a temperature in the range of around 0.degree. C. to about 25.degree. C., and the reaction produces an aminoalkylated phenol. The aminoalkylated phenol is contacted with hydrogen in the presence of a metal catalyst at a temperature of about 120.degree. C. to about 140.degree. C.

Abstract: Disclosed is an improved safety guard for use with sheet feeding mechanisms which is disposed between the feeding mechanism and the exposed feed roll nip of a mechanism for the processing of the sheet material. The safety guard includes a non-rigid, non-elastic member which prevents an attendant from inadvertently placing his appendages in the exposed nip of feed rolls while not interfering with the passage of the sheet material from the feed mechanism to the feed rolls of the processor. The safety guard adjusts automatically and instantaneously as the width of the sheet material changes to shield the variation in exposure.

Abstract: An improved composite feeder belt for use in transporting and handling minerals or the like wherein the belt is comprised of a low modulus, abrasion resistant urethane containing a reinforcement of free floating, spaced encapsulated yarns. The yarns are woven in the form of a scrim and are treated to prevent penetration of the liquid urethane into the filament bundles during manufacture of the belt and also to inhibit adhesion of the urethane to the yarns.

Abstract: Herein disclosed is an improved method of kiln drying architectural grade plywood and lumber which has been treated with a water borne agent. The improved method utilizes coated wire mesh as the kiln stickers. Use of the coated wire mesh stickers greatly reduces the incidence of sticker marks on the decorative faces of the plywood and lumber.

Abstract: Tars and hydrocarbon oils containing water are dehydrated in a thermally efficient and environmentally acceptable manner. The tars or hydrocarbon oils are heated externally to any holding vessel to a temperature equivalent to at least 100.degree. C. at atmospheric pressure and are sprayed into a holding vessel to enhance the separation of water from the tars or hydrocarbon oils. Then the water in the vapor state is removed from the holding vessel and scrubbed to remove any noxious chemicals.

Abstract: An improved variable volume control assembly for conditioned air systems having an improved air flow amplifying measuring means that amplifies the difference between the total pressure and the static pressure and is sensitive at low pressures, an improved air flow collector-straightener, a critical ratio of the area of the inlet to the area of the expansion chamber, and a vortex filter strategically located within the assembly for maximum reduction of turbulence and noise.

Abstract: A method and apparatus for inspecting and sorting buttons and the like. The buttons to be inspected are fed to a velocity control system which imparts a uniform velocity to each button and propels it between a light source and detector. The light from the source is controlled by a mask to limit the light to the central zone of the button. The amount of light which passes through the central zone of the button is then converted to an electrical signal by the detector electronics. The electrical signal is then compared to pre-set upper and lower limits. If the signal falls within the pre-set limits, an accept signal is generated which is used to control a reject mechanism for automatic separation of buttons for collection and use.

Abstract: A rotary union comprised of housing defining a generally cylindrical chamber, a rotatable shaft, a plurality of stationary bearings and an end cap. The cylindrical chamber is open at one end. The housing has an inlet port and an outlet port through the housing in communication with the chamber. The chamber has a shaft rotatably mounted therein on stationary bearings contained within the chamber. The rotating shaft has a port axially spaced to be in line with the inlet port in the housing to receive a fluid with lubricating capacity. The fluid is conducted through the shaft by way of a second port to a rotating element which the shaft is suitably affixed. The fluid is allowed to seep within the union, thereby providing a lubricating function. The shaft, also, has a plurality of drain ports in communication with the outlet port in the housing to permit discharge of seepage fluid. An end cap preceded by a shim is placed in the chamber opening, enclosing the opening.

Abstract: An improved flexible diaphragm coupling including a floating shaft connector having flexible discs welded thereto, the flexible discs connected to axially spaced, coaxially aligned shaft mounted hubs, pilot rings surrounding the discs for aligning the assembly with the hubs and damper means fixed to the floating shaft and the pilot rings. The damper means which includes an elastomeric inner ring serves to dampen axial oscillations of the coupling assembly and seals the disc element from adverse contaminants.

Abstract: Disclosed is an apparatus for the continuous stacking of paperboard blanks issuing from a continuously running corrugator capable of producing orders of blanks of different sizes. The stacking apparatus includes a vacuum control box and a variable speed endless conveyor belt which is adapted to speed up and create a gap between the blanks of various sizes. In operation the gap provided allows the blanks of one size to be stacked without interrupting the continuous running of the corrugator.

Abstract: A rotary valve apparatus suitable for transporting particulate solid materials from one pressure region to another pressure region, each pressure region may be at different operating temperatures. The apparatus includes a stationary housing defining a generally cylindrical shaped chamber with inlet and outlet openings; end walls enclosing the cylindrical chamber; an elongated shaft journaled centrally within the housing and end walls; and a plurality of vanes affixed to the shaft. The vanes are in communication with the walls of the cylindrical chamber to form a seal. The seal between the vane and cylindrical chamber wall is effectuated by a vane blade which is affixed to each vane. Vane blades are constructed using a metal blade partially sandwiched between an elastomer material, the exposed portion of metal blade is in a sealing engagement with the walls of the cylindrical chamber. At the end of the vanes are shrouds which, in cooperation with the vane, form pockets.

Abstract: A method of making piston rings comprising forming annular stepped grooves in the outer periphery of a plurality of piston ring blanks, stacking the blanks on a rotatable arbor, electro-depositing a layer of chromium in the grooves and on the outer surfacs of the ring blanks, and removing an outer portion of the chromium layer and the outer bearing faces of the ring blanks to form a plurality of piston rings having a continually axially convex surface on the face of the ring formed by the deposited chromium and bearing faces of the ring.

Abstract: Polyesters obtained by reacting isophthalic acid or terephthalic acid with a polyol with or without a catalyst in a first stage to form a half-ester mixture which is reacted in a second stage with an aliphatic polycarboxylic acid are produced at reduced processing times. In the first stage a portion of the total polyol to be reacted is contacted with substantially all of the isophthalic acid or terephthalic acid. Then, this mixture is heated with agitation to a temperature of at least 190.degree. C. and the remaining portion of the polyol is added to the heated mixture with agitation in such a manner that the temperature remains at or above the 190.degree. C. This temperature is maintained until the reaction to form a half-ester mixture is completed. This reaction may be conducted in the presence of an esterification catalyst. The polyester-monomer mixture is reacted in a second stage with an aliphatic polycarboxylic acid to produce the polyester.