Abstract: A backhoe arrangement is disclosed wherein the boom comprises a pair of transversely spaced apart boom sections so that a single boom cylinder can be mounted therebetween and wherein overcenter forward movement of the boom sections and boom cylinder provide a transport configuration for the backhoe in which the center of gravity is substantially closer to the rear of the vehicle.

Abstract: An improved corrosion-resistant two component epoxy-amine primer system is disclosed wherein the first component of the primer system includes a liquid solution of a resinous polyepoxide, such as a diglycidyl ether of bisphenol A, and the second component comprises a liquid solution of an epoxy curing agent carrying a plurality of amino hydrogen atoms. In accordance with the invention, at least one of the components, preferably the first, contains a finely divided siliceous material having OH groups, such as talc, clay, or hydrous silica prereacted with an alkoxy group of a polyalkoxy silane or siloxane carrying at least one active hydrogen atom from an amine or mercaptan group which is reactive with the epoxy group of the polyepoxide. In addition, at least one of the components contains one or more inorganic corrosion-resistant chromate pigments.

Abstract: A low gloss radiation cure is obtained by applying an aqueous emulsion of relatively viscous radiation curable resin and curing the applied film with appropriate radiation energy before the emulsion in the applied film breaks, to produce a cured film containing microscopic discontinuities.

Abstract: An inflatable dunnage bag having a relatively thin-film, flexible, gastight bladder is provided with a fill valve device extending from the exterior of the bag to the interior of the bladder. The fill valve device includes a hollow housing which is mounted on one end by means of a flange to the outer surface of one wall of the bladder. Within the housing there is an orifice and a plug member which is spring-biased in sealing engagement against the orifice. The plug member extends beyond the end of the housing and into the bladder. A flange on the end of the plug member in the bladder is substantially parallel to, and spaced away from, the mounting flange/bladder wall interface to provide a separation of the bladder walls, to deflect the filling gas to prevent impingement upon the bladder wall opposite the housing, and to provide an anti-blowout stop thereby preventing the plug member from being blown out of engagement with the valve housing when the bag is subjected to high compressive loads.

Abstract: An electronic control system for a marking machine having a moving marking member carrying a plurality of marking symbols in which the marking member is stopped and displaced to mark a workpiece with a selected one of the symbols at a marking location, the control system including means for generating pulses in synchronism with movement of the symbols past the marking location, a register responsive to the pulses for producing outputs corresponding to the symbols, means to select one of the outputs corresponding to a selected symbol, and means responsive to the selected output for effecting stopping and displacement of the marking member to mark the workpiece. The control system is operable to insure marking with a selected symbol and to preclude inadvertent opertion of the marking machine until the control system is reset after each marking cycle.

Abstract: A novel structural member, such as a tennis racket frame, having an unusually high strength to weight ratio is provided comprising an expanded foamed plastic core integrally bonded to a shell comprising at least one layer of resin-coated unidirectionally oriented graphite fibers, the shell completely encasing the core at any transverse cross section of the structural member with a veiling strip wrapped around said core beneath the innermost or beyond the outermost of the graphite fiber layers, or both.

Abstract: A novel structural member, such as a tennis racket frame, having an unusually high strength to weight ratio is provided comprising an expanded foamed plastic core integrally bonded to a shell comprising at least one layer of resin-coated unidirectionally oriented graphite fibers, the shell completely encasing the core at any transverse cross section of the structural member, with a seamless sleeve made of a thin, flexible cellulosic film between the core and the shell.The structural member is prepared by arranging within a mold cavity an outer shell comprising at least one sheet of resin-coated unidirectionally oriented graphite fibers and a core comprising a foamable resin composition while the core is maintained within a seamless sleeve made of a thin, flexible cellulosic film, sealing the mold cavity and activating the foamable resin composition to cause expansion and generate pressure within the mold cavity and thereby provide intimate bonding of the core to the shell.

Abstract: A sludge removal mechanism including concentrating members for concentrating the settled sludge in localized areas on the bottom of the tank with conduits leading from the localized areas to a collection zone. A flow control device is associated with each conduit in the collection zone and a plurality of flow control devices are simultaneously moved by a drive mechanism so that the range of flow from a plurality of localized areas in a tank are changed simultaneously.

Abstract: The invention comprises an improved machine tool assemblage incorporating a machine stand in which there are provided cylindrical assembly units located in bores disposed transversely to the working direction of the machine functions to be performed. The cylindrical assembly units contain working cylinders and pistons for operating tool slide mechanisms for performing the requisite functions on workpieces positioned on the machine stand.

Abstract: Protective coatings, such as paints and liquid formulations therefor, containing a masked chromogen which signals contact with a body fluid when the protective coating is masticated or ingested are disclosed. The chromogen is capable of producing a contrasting color when masticated and/or ingested, thereby signaling that the individual who masticated and/or ingested the chromogen may have ingested an undesirable or hazardous substance, e.g., a lead-based paint, that has been covered by the protective coating. The chromogen is substantially indiscernible in the paint and converts by reaction with an activator substance, e.g., by reaction with saliva, gastric juices, or the like, to a colored form which then stains the body fluids and/or the body tissues, and which may also stain the original source of the undesirable substance.

Abstract: A method for making a nonwoven pile web from differently colored pile yarns, lying side by side, and being arranged so as to form a color-configuration and being adhered perpendicularly in a sub-layer.

Abstract: An electronic control system for controlling the depth of a vehicle drawn implement as a function of a plurality of sensed variables including a plurality of transducers one for sensing the value of each of the variables, and an electronic control circuit for initially generating a pulsating signal having a characteristic which varies in accordance with and is representative of the value of each variable, for converting that variable to a variable amplitude signal, for algebraically adding the various signals and for producing a control signal to operate an electrically operated valve in response to the polarity and amplitude of the signal to selectively raise and lower the implement to the desired depth.

Abstract: A safety ladder assembly having a plurality of steps and at least three support feet for supporting the ladder on a horizontal surface. A caster assembly having at least three casters for providing for rollingly transporting the ladder from one location to another. The casters are positively and conjointly moveable between a retracted storage position in which the support feet stably support the ladder on a horizontal surface and a second transporting position in which the casters stably support the ladder assembly on the horizontal surface with the support feet elevated thereabove so that the ladder assembly may be rollingly transported along the surface. A linkage interconnects the casters so that they may be raised and lowered via actuating and retracting pedals.

Abstract: An automatic strapping apparatus is disclosed which forms a small primary loop from strap; expands the primary loop to a larger predetermined diameter loop which can be placed about a package to be strapped; and tensions, friction fuses, and severs the strap. The small primary strap loop is formed by feeding a free end of a length of strap into a circular cup through a slot in the cup sidewall so that the free end is guided by the inner periphery of the cup to form a loop with the strap free end overlapping a portion of the loop. The cup is moveable from an upper position around the formed primary loop to a position out of contact with, and below, the loop. A cylindrical gripper is provided inside the loop and a smooth-surfaced anvil is provided on the exterior of the loop for engaging the overlapped portion of the loop therebetween so that the strap free end is restrained by the gripper while the overlapped portion of the loop can be continued to be fed to expand the loop to a larger predetermined diameter.

Abstract: Overlapping ends of metal strap, or the like, are aligned and connected without the aid of an overlying supplemental seal or fastener by means of an array of longitudinally spaced joints which form a one-way interlocking relationship. The joints comprise juxtaposed protuberances formed by slits in the strap ends, integral with the overlapping strap segments, which override each other as the interlocking relationship is formed. Protuberances at each end of the array on one of the strap ends are angled laterally in opposite directions and have a greater width than that of the remaining protuberances which, upon shifting of the joined overlapping lengths of metal strap relative to each other in a direction tending to disengage the joints, wedge in the corresponding slits of the other strap to provide a stop preventing disengagement.

Abstract: Tantalum and tantalum-rich alloys, particularly in wire form, are stabilized against embrittlement by the addition of 50 to 700 parts per million of silicon and optionally with the further addition of 100 to 500 parts per million of carbon.

Abstract: Composite pressure sensitive adhesive sheets and strips for attaching two members together comprise an elongatable, permanently compressible, cohesive base strand or sheet having little or substantially no resilience and exhibiting low flow and carrying on one or both sides a pressure sensitive adhesive material adapting it for particular applications. Plastic trim strips laminated to exterior automobile bodies by such coated strips show tenacious adhesion and good resistance to creep and to delamination under impact at low and high temperatures.

Abstract: A novel structural member, such as a tennis racket frame, having an unusually high strength to weight ratio is provided comprising an expanded foamed plastic core integrally bonded to a shell comprising at least one layer of resin coated unidirectionally oriented graphite fibers, the shell completely encasing the core at any transverse cross section of the structural member.The structural member is prepared by arranging within a mold cavity an outer shell comprising at least one sheet of resin coated unidirectionally oriented graphite fibers and a core comprising a foamable resin composition, sealing the mold cavity and activating the foamable resin composition to cause expansion and generate pressure within the mold cavity and thereby provide intimate bonding of the core to the shell.

Abstract: Apparatus for storing a mobile forklift truck on top of a raised platform such as a loading dock or the floor of a transport truck, and to an improved forklift truck for use in such apparatus. The apparatus includes a pair of stirrups mounted on top of the raised platform to receive the fork tines of the forklift truck, so that when the tines are lowered far enough, the forklift truck is lifted up until its drive wheel is level with the top of the raised platform. The apparatus also includes a collapsible support arm movable between an out-of-the-way position and an operative position level with the platform top, where the support arm engages the drive wheel of the forklift truck. The improved mobile forklift truck of this invention has a "ready condition" in which it can be brought into position for self-storage on the raised platform, in which condition forwardly extending wheels can move through a restricted "collapsing zone" having specified boundaries into out-of-the-way storage positions.

Abstract: A high gloss, water base, pigmented latex is provided by grinding a pigment into a water-free solution of a carboxyl-functional addition copolymer of monoethylenically unsaturated monomers including at least about 3% by weight of monoethylenically unsaturated carboxylic acid in water miscible organic solvent, the copolymer being at least partially neutralized with an amine, particularly an hydroxy amine, to render the said copolymer dispersible in water, and thereby form a nonaqueous pigment paste, and then mixing the nonaqueous pigment paste with an aqueoux latex. The invention includes the latex paint so-produced.