Abstract: A system for the analysis of gas samples from a dry and dusty environment, such as the interior of a lime kiln, includes a probe which extends relatively far into the kiln, to avoid the adverse effect on the measurements of extraneous, i.e., "tramp", air which may leak into the kiln. A sample of the gas is drawn through an isolation tube which extends from the probe chamber in a direction for sample flow opposite to the flow of gases in the kiln. The sample is passed through a filter, within the probe chamber; pumped to a conditioning system, in which the sample gas is cleaned and cooled; and then pumped to gas analysis cells for the analysis of the individual gases.The probe chamber is mounted at the end of a support pipe which carries a first tube, connected to the filter. This pipe serves as a path to introduce purge air for the filter and also calibration gases for test purposes. The actual gas sample is withdrawn through an innermost pipe which terminates just upstream of the inlet of the filter.

Abstract: An apparatus for forming a paperboard receptacle includes male and female dies which draw the receptacle from a blank. The receptacle is moisturized during the drawing process to plasticize and lubricate the paperboard by injecting steam into one of the dies.

Abstract: An apparatus for use in filling a valve bag eliminates sifting of product during the filling process. A filling nozzle is inserted into the valve of a bag to be filled. A flow of particulate material is provided through the filling nozzle and into the bag. When the bag is full, the flow of particulate material is terminated. A blast of high pressure air is then introduced into the nozzle in order to clear the nozzle of any residual particulate material therein. A low pressure blast of air is introduced between the nozzle and the filling valve to suspend any particles present in the filling valve after the nozzle has been cleared by the high pressure blast. A vacuum is introduced into the nozzle to suck any suspended particles out of the filling valve after the low pressure blast has been introduced. A boot can be inflated around the nozzle to seal the nozzle within the bag valve before filling the bag.

Abstract: A blank for forming a carton with integral tamper-proof pouring spout, the method of forming the carton, and the resultant carton, said carton comprising first and second side wall panels, first and second end wall panels hingedly connected to said first and second side wall panels, and top and bottom closure panels attached to said side wall panels to form a tubular carton of rectangular cross-section, one of said wall panels of said erected carton including an inner and outer panel having a dispensing opening with a pouring spout formed therethrough being movable from a closed to an open position, and an access tab located above and immediately adjacent to said pouring spout and removably attached to said outer panel and said pouring spout to prevent opening of said spout until said access tab is removed.

Abstract: A skirt for a sewage aerator mixer is supported on a bubble generator pipe beneath the mixer structure in a sludge basin or directly on the floor of the basin in surrounding relation to the lower end of the mixer structure to extend the sphere of influence of the mixer.

Abstract: An apparatus and method for use in filling a valve bag eliminates sifting of product during the filling process. A filling nozzle is inserted into the valve of a bag to be filled. A flow of particulate material is provided through the filling nozzle and into the bag. When the bag is full, the flow of particulate material is terminated. A blast of high pressure air is then introduced into the nozzle in order to clear the nozzle of any residual particulate material therein. A low pressure blast of air is introduced between the nozzle and the filling valve to suspend any particles present in the filling valve after the nozzle has been cleard by the high pressure blast. A vacuum is introduced into the nozzle to suck any suspended particles out of the filling valve after the low pressure blast has been introduced. A boot can be inflated around the nozzle to seal the nozzle within the bag valve before filling the bag.

Abstract: A plastic caul for embossing wood panels with grain patterns comprises a laminate of sheets of epoxy prepreg made of such heat insensitive non-cellulosic webs such as fiberglass or woven graphite impregnated with partially cured epoxy resin. The caul may also include a metal core or backing sheet. The embossing face of the caul contains a relief design, usually transferred from a natural wood grain pattern.To form the caul, a mold is first prepared. The mold may comprise a textured wood panel, the grain surface of which has been sealed with a material such as urethane varnish or a water reducible imine catalyzed acrylic varnish with a urethane additive. The sealed textured face is then coated with a release agent. This treatment prevents the panel and future caul from sticking together. Sheets of the epoxy prepreg are then layered between the treated surface of the panel and a backing sheet and compressed under heat and pressure until substantially cured.

Abstract: Method for forming a paperboard receptacle includes male and female dies which draw the receptacle from a blank. The receptacle is moisturized during the drawing process to plasticize and lubricate the paperboard by injecting steam into one of the dies.

Abstract: This package is particularly adapted for carrying an article to display the latter at the point of sale. The package is formed to stand on a shelf or to hang when the article is being displayed. It is created from a unitary paperboard blank and includes product retaining openings with product encircling edges to retain the product in the openings. The preferred embodiment of the package is adapted for use in carrying flashlights along with batteries carried separately by the package.

Abstract: A heavy duty corrugated paperboard vegetable container formed from a one-piece blank. The container has a tapered cross-sectional configuration adapted for containing vegetables, such as asparagus or the like and is internally sub-divided into equal size compartments. The container is used for shipping vegetables, and may be cut in half without destroying its structural integrity.

Abstract: Disclosed is an apparatus for lubricating and beading the edge or rim of a cup having a seamed annular sidewall and a polygonal base. A 360.degree. spray means sprays the inside top margin of the cup wall with water to lubricate and a spinning head having a plurality of radially moveable forming members for contact with the rim subsequently produces the bead. The lubricator has a deflector which moves by means of an air cylinder axially into contact with the top annular wall end to close the end and to direct and combine a water mist created by a 360.degree. spray set up which atomizes the water to a mist by means pressurized air. For the bead forming operation, a base plate together with relatively moveable socket forming wall members provides a seat for the cup on a cam operated elevator device which moves the cup upwardly. The socket is complementary to the polygonal base to prevent rotation of the seated and supported cup relative to the socket.

Abstract: A paperboard container is provided having an opening member defined by an array of perforations. A coating of plastically deformable and readily rupturable material is disposed on the inside surface of the container and extends on each side of each perforation in the array of perforations including the continuous section of paperboard material between adjacent perforations. The cooperation of the coating of plastically deformable material and the paperboard material ensures that the severances between adjacent perforations will be more precise, less ragged and will not produce detached slivers of paperboard material.

Abstract: An easy opening carton and blank for forming same made from a paperboard material comprising a laminate of a smooth cover sheet and an inner lining, or a unitary construction are provided. The generally rectangular carton has opposed front and back walls, opposed side walls and opposed top and bottom walls. A parallel array of perforation lines are disposed on one side wall adjacent the top wall in a configuration such as a V or a semi-circle to form an easy opening area. The parallel array of perforations includes a plurality of parallel lines of perforations having each perforation in alternating positions between adjacent lines of perforations. The parallel array of perforations defines a wide area of penetration which sufficiently weakens the inner paperboard lining to facilitate opening the carton. Inward pressure on the easy opening area will separate the area from the side walls and permit the top wall to be torn back to form a pour spout.

Abstract: A reclosable paperboard carton and blank therefor, which carton has overlapping and glued end panels closing one end thereof. Once the end panels are opened, they can be reclosed by inserting a straight distal edge of one of the panels under an arcuate tab defined in the interior of the other panel. Using a plain, straight distal edge on the insertable panel reduces paperboard waste and manufacturing costs since exterior locking tabs are eliminated and single knife cutting can be used. In one embodiment, the tab is defined by an arcuate cut line and two spaced perforated lines extending from the arcuate line to the distal edge of the panel. In a second embodiment, the tab is defined by a cut-out recess extending from the distal edge of the panel and having an arcuate bottom edge.

Abstract: A quick opening envelope which gives full access to its interior upon opening is disclosed. The envelope is formed from a blank constructed from a single sheet of flexible material having a plurality of fold lines defining a front panel, a back panel, two side flaps and a closure flap. The back panel is attached to marginal areas of the side flap by means of a releasable adhesive material and to a central tab portion of the closure flap by conventional adhesive material. The closure flap tab is defined by a V-shaped formation of die cut perforations, each of which includes a curved portion and a straight portion. The V-shaped formation of perforations enables neat and easy opening of the envelope by lifting to separate the tab from the closure panel and the back panel from the side panels.

Abstract: A carton and blank for forming a carton are provided for a single serving of dessert pie. The carton formed from the blank is substantially wedge shaped and includes top and bottom panels disposed in parallel relationship. The top and bottom panels define similar isosceles triangles, but the top panel is larger than the bottom panel thereby reflecting the actual configuration of the pie packaged therein. The subject carton formed from the blank includes a plurality of rear opening flaps providing access to the container from the rear. Additionally, the carton, has a double side wall and a double slanted rear wall to protect the fragile slice of pie.

Abstract: A bag for containing a flowable product comprises a plurality of panels hingedly coupled along fold lines, an opening at one end of the bag, and a flap hingedly coupled to one panel along a fold line for overlapping an opposite panel and closing the opening. An adhesive layer extends across the entire width of the flap to seal the flap to the opposite panel. The adhesive layer seal has a reduced bonding strength adjacent one end of the flap to facilitate opening of the flap at the reduced bond strength section. The flap after being sealed to the opposite panel, is reversely bent 180.degree. along with the sealed opposite panel about a lower fold line and portions of the fold extending inwardly from opposed distal ends of the bag are either adhesively tacked or stapled to the one panel to form a finger grip handle therebetween for carrying the bag and its contents.

Abstract: A mobile paper roll splitter device and a method for splitting a roll of paper are disclosed. A fork lift type truck is moved to a roll of paper and a horizontally disposed spline is inserted into the core of the paper. A horizontally disposed beam operatively connected to the truck is moved downwardly onto the roll of paper along a vertically disposed beam also connected to the truck. A blade, operatively mounted on the horizontal beam, is moved horizontally back and forth along the horizontal beam as the horizontal beam is forced downwardly onto the roll of paper, thus splitting the roll.

Abstract: A printed computer training device having a number of leaves hingedly connected together. A plurality of first leaves have screen display simulating indicia on a first side and keyboard action simulating indicia on a second side. A second leaf, hinged to the first leaf, has keyboard simulation indicia on a first side. A plurality of third leaves, hinged to the second leaf, have operating instruction indicia on a first side and keyboard action simulating indicia on a second side.

Abstract: Apparatus for testing the abrasion resistance of a printed area on a carton which is also subjected to flexing during the abrasion process. The apparatus includes means for holding the two carton samples in proximity to each other while one sample is oscillated over and abraded with the other. One of the samples is provided with a raised center portion to simulate flexing of the carton samples as they are abraded.