Abstract: An expansion joint having a working element of polytetrafluoroethylene is protected from fire by jacketing with an enclosure of refractory material. The jacket has openings through which pipe passes to and from the joint. A gland is inserted within the openings around the pipe for closing most of the gap therebetween while affording sufficient freedom of movement not to interfere with motion of the joint. Each gland is formed from a metal ring, channel shaped, coated on all surfaces with an intumescent material which expands in a fire to seal all remaining gaps between the pipe and the encircling opening in the jacket whereby hot gases are barred from passage. Alternatively, where radial movement is not required, the intumescent material may be coated directly on the refractory material around the opening surrounding the pipe.

Abstract: Apparatus for selectively inserting into and withdrawing color absorption filters from the light beam paths or photographic color recorders, e.g., of the aerial image and enlarger types. Includes a housing defining a pluralsection chamber and having opposed and spaced sidewalls with the latter in an operational section of the chamber having substantially aligned windows closed by suitable optical transparencies through which the light beam path of a photographic color recorder may extend upon suitable beam-intercepting support of this housing in a certain orientation. A plurality of substantially parallel, planar color absorption filters, having substantially uniform indices of refraction, are arranged in three different groups within a storage section of the chamber that is offset from the windowed operational section.

Abstract: A process for solubilizing a suspension of casein in powder form in an aqueous medium, the casein suspension containing at most 270 g of casein per liter of aqueous medium, which comprises leaving the casein suspension to age for at least 10 minutes, after which a solubilizing agent is progressively added to this suspension until a homogeneous solution is obtained.Application to acid casein, the solubilizing agent being an alkaline agent. Application to phosphocalcic and rennet caseins, the solubilizing agent being a calcium-complexing agent.An apparatus for carrying out this process.

Abstract: Apparatus for inserting a panel spacer between two articles in which a housing carrying cam fingers moves from an upper position to a lower position so as to engage the tops of the articles with the cam fingers to tilt and separate them whereupon a panel insert held in the housing is released and drops between the articles with there also being provided a plunger blade to fully insert the panel spacer and also to prevent the dropping from the housing of a spacer member next above.

Abstract: Apparatus for optically copying to a desired scale with good resolution reproductions of small film images. Includes the equivalent of a filmstrip/slide or animation stand apparatus, a reproducing camera mounted upon an upright track support for elevational adjustment and having the axis of its focally adjustable lens and its gate arranged substantially downward, and a lateral tabletop supported below the camera lens for interception of the axis of the latter thereby. Means define an internal chamber which has a lateral bottom wall and an entrance upright sidewall with a top portion of this means having a large opening down through which the axis of the reproducing camera lens extends to the top face of the bottom wall and with the entrance wall having a beam entrance window.

Abstract: A process for the preparation of .epsilon.-(.gamma.-glutamyl)-lysine which comprises heating lysine glutamate for at least 5 hours at a temperature of at least 120.degree. C by means of an inert heat-carrier fluid, and isolating .epsilon.-(.gamma.-glutamyl)-lysine from the conversion product thus obtained.The inert heat-carrier fluid can be either a gas such as air or nitrogen, or a liquid such as n-amylalcohol, kerosene, nonane, 1,1,2,2-tetrachloroethane, 1-octanol or 2-ethyl-1-butanol.

Abstract: A low-carbon ferrochrome alloy containing a decreased amount of nitrogen can be made by this method. This method is conducted in a hydrogen stream and does not necessitate use of vacuum technique. A product of high purity can be obtained relatively simply and economically.

Abstract: Apparatus for use in controlling the firing of heat generators provides output signals having first or second different characteristics during preselected time periods, the times of occurrence and extents of which are readily changeable by variation of the settings of switches. A system includes night and day thermostats selectively connected with a heat generator under control of such apparatus.

Abstract: A method for transferring a highly compressed gas from a reactor into a storage tank with condensation of the gas is disclosed in which the gas is at first liquefied and cooled to a temperature below the storage temperature, then the liquefied gas is expanded and transferred into the storage tank, and after the pressure in the reactor has dropped to about the pressure in the storage tank, the remaining gas in the reactor is transferred by a compressor from the reactor into the storage tank.

Abstract: A process for preparing a tea extract is disclosed in which a heated aqueous tea slurry is confined in a first zone separated from a second zone by a liquid-pervious barrier, a body of extraction liquid is maintained in said second zone to permit diffusion of tea solubles from the tea slurry into the extraction liquid, the volume of the slurry being 0.5 to 2.5 times the volume of the body of extraction liquid. After a suitable contact time, the extraction liquid and slurry are removed from the zones and the tea solubles diffused in the extraction liquid and present in the slurry ultimately are combined, intervening processing including, for example, stripping and removing of aromatic volatiles before a final extract product is provided.

Abstract: Steel pipe, fittings, joints and valves, lined with PTFE resin are rendered fire-safe for in excess of one hour exposure to open flames by jacketing the components with an enclosure formed from fibrous refractory material. The enclosures are configured and dimensioned to contain a substantially fixed air volume within a predetermined air gap space between the exterior of the component and the interior of the jacket. As an example, high-alumina ceramic fiber mixed with a suitable binder is vacuum formed and then surface coated with an epoxy enamel to produce segments which can be joined around the components to produce satisfactory enclosures. The described segments are reinforced with a metallic skeletal structure which is located so as to permit sizing of openings in the field to accommodate alternative modes of installation.

Abstract: Tape applying mechanism assembly for a carton sealing machine, which includes a movable tape cut-off means or cutter having a cutting edge and guard means protectively covering this cutting edge when the cut-off means is in a projecting idle position. A movable carrier supports tape wipe-on means in a path of advance of a carton when the assembly is mounted in the machine and it is retractable by such carton advance. Additional movable carrier means supports the cutter for motion of its cutting edge across a path of travel of the tape to the advancing carton for severance of the tape as the section of the latter of desired length is applied to the carton. Retractable guard means protectively covers the cutting edge when the cutter is in a projecting idle position intervening successive tape applying actions. Means retract the guard means for uncovering the cutting edge while the carton advances past the tape wipe-on means.

Abstract: Carton setting up and loading machine to facilitate an operator successively setting up in empty chamber-defining shape a plurality of cartons in upright position on their flat stack of bottom closing flaps folded inward and the loading of their chambers to release them to remainder of the machine for sealing of their tops and bottoms. Lateral machine bed has an entrance end and a discharge end with transport means to move a loaded carton laterally forward along a path from the former end to the latter end while sealing closed at least the folded top flaps thereof. A carton setting up and loading lateral support or table top precedes the entrance end of the machine bed adjacent thereto.

Abstract: The photosensitivity of organic photoconductive materials can be improved by reactively mixing a free radical former having a free radical produced by irradiation of a dye base compound and an organic photoconductive materials with radiation energy.

Abstract: Pattern envelopes or like flat articles retained in stack configuration by elements engaging marginal portions of the lead article are withdrawn substantially in such flat condition by displacing the lead article in its entirety in a manner spacing at least one lead article marginal portion from its associated retaining element and then displacing the same outwardly of the stack spacedly from the retaining element. Further outward displacement of the withdrawn marginal portion effects sequential withdrawal of the other marginal portion from the stack.

Abstract: Tape applying mechanism of carton sealing machines for feeding pressure sensitive tape having an uncoated back side and an adhesively coated face and to apply the latter to end panels of an advancing carton and lap it over the opposed longitudinal edges of folded-in side flaps of such carton. It includes means to guide the tape along a path extending toward and for lap against a wipe-on applicator cylindrical roller that is movably supported for swing toward and away from a carton travel path with the adhesively coated face exposed outward away from this roller.

Abstract: Apparatus for transporting materials to, from and through the cavity of a microwave unit is disclosed, said apparatus embodying microwave energy cut-off means which is effective to prevent any undue microwave leakage from escaping therethrough. The apparatus in one form comprises a transporter unit which includes an endless transporter belt means disposed in a housing connected to the microwave unit, the transporter belt means feeding the material being treated onto and receiving treated material from a further conveyor unit within the microwave unit, the belt means traversing tunnels in the housing which function as cut-off tubes to prevent microwave leakage from the cavity of the microwave unit, the tunnels having a cross-sectional configuration and length such as to provide for the desired degree of power attenuation. For example, for a microwave unit operating at 2450 MHz the tunnels can be square and have a maximum or longest side dimension of about 1.7 inches and a length of about 10 inches.

Abstract: Polycrystalline optical materials formed from halides of alkali and alkaline-earth metals and of other metals, and mixtures thereof, some of which contain selected additives to act as nucleators and grain-growth regulators, and also apparatus and method of producing these materials from a liquid melt are disclosed. The polycrystalline products have optical transmissions approaching those of single-crystal materials, but exhibit significantly higher resistance to thermal and mechanical shock.The disclosed method and apparatus allows formation of unshattered polycrystalline ingots of any desired size by uniform nucleation from a homogeneous melt, and involves the controlled uniform removal of heat from the solidifying mass alone or in combination with a continuous addition-solidification process, which results in the formation of a substantially clear polycrystalline body or ingot, free of voids, and composed of randomly oriented single crystal having grain growths in a range of from about 0.01 to 10 mm.

Abstract: A casting powder to be used for ingot casting and continuous casting of steel which contains substantially no carbon particles.It contains, instead of carbon particles, BN or other nitrides as an agent for adjusting fusion rate of the casting powder so as to fully prevent carburization and carbon pick-up caused by the carbon particles which has heretofore been added to the powder for control of the fusion rate. This new casting powder may contain a reducing agent in addition to the nitride.

Abstract: A safety razor in which a double edge blade is held clamped in shaving position between a bridge member and cap member carried on a mounting plate attached to a handle. To change the blade, the bridge member and cap are slid longitudinally of the mounting plate to a second or blade change position and the cap is lifted free to provide access to the blade for changing same.