Abstract: An end wall 9, for attachment to a container, has a central panel 10 and surrounded by a channel portion 11 which includes a deposit of solder 19 in the form of a paste of solder and flux. The can end 9 is joined by a double seam 23 to a sidewall 12 of a container body. Heating of the double seam melts the solder to create a soldered joint between the end wall and sidewall. The invention is to be used in the manufacture of containers requiring strong double seams and may be used to make containers for carriage of dangerous goods. Apparatus for applying solder pastes to can ends is described in which paste is urged from a pot against convex surface 37 before passing through outlet nozzles 38 onto a can end.

Abstract: A stationary material mixing apparatus for mixing various components in a fluid stream. The mixing apparatus is a biscuit placed within a conduit along the longitudinal axis of the conduit. The biscuit contains a plurality of openings therethrough where within openings are located mixing elements which induce a rotational angular velocity to the fluid stream. The material mixing apparatus is particularly effective in mixing a low viscosity component into a high viscosity fluid stream.

Abstract: An optical thin film filter for the spatial and spectral separation of two or more transmitting bands of radiant energy. For a two band filter the filter has a substrate substantially transparent to radiant energy in the transmitted bands. On one surface of said substrate is a multilayer interference coating that transmits both wavelength bands of interest. On the other surface of said substrate (or on the same surface) are two sets of non-overlapping butted, parallel stripes with one set being alternately interspersed with the other. The widths of said stripes are varied to provide for precisely defined regions of spatial and spectral delineation. One set of stripes is capable of transmitting one of the bands of interest and reflecting all others, while the second set of stripes is capable of transmitting at least one band different from the one band transmitted by said first set of stripes and reflecting all others.

Abstract: The maleimide copolymer of the invention is of the class of N-substituted maleimide copolymer such as N-alkyl or N-aromatic maleimide copolymer having peroxy bonds in a molecule, utilizable as a precursor for preparing a maleimide block copolymer and as a modifier for other resins. The maleimide block copolymer, which is useful as a molding material or a thermal resistance improver, is obtained by polymerizing maleimide monomers in the presence of a polymeric peroxide followed by polymerizing vinyl monomers.

Abstract: A non-linear optical material consists essentially of 3-(2-thienyl)-1-(4-methylphenyl)propene-3-one represented by the formula (I) ##STR1## A non-linear optical device contains an organic compound disposed in a light beam. The organic compound is represented by the formula (I) and has a crystal in which a space group determined by the X-ray analytical method is P2.sub.1.

Abstract: A maleimide random copolymer contains an N-substituted compound structural unit, an unsaturated peroxycarbonate structural unit and optionally a vinyl monomer structural unit. In place of the unsaturated peroxycarbonate structural unit, an unsaturated peroxyester unit may be contained. A process for preparing a maleimide graft copolymer comprises polymerizing a mixture of an N-substituted maleimide compound and a vinyl monomer in the presence of a random vinyl copolymer containing peroxy groups with active oxygen content.

Abstract: A composition having excellent water-repellent properties and stability in an emulsified state is provided. The composition contains a wax having a melting point of 50.degree. to 90.degree. C., a hydrocarbon resin, an alkali metal salt of a condensation product of .beta.-naphthalene sulfonic acid with formalin and an alkali salt of polyacrylic acid. These components are emulsified in water. The composition is especially useful as a waterproof agent fo gypsum boards and gypsum plaster.

Abstract: An apparatus for conveniently plumb-aligning walls is provided. The apparatus includes an anchor for pivotally attaching the device to the ground. The anchor is attached to a support member for positioning a tubular member at a convenient height for manual manipulation. Extending upwardly from the tubular member is an extender. Attached to the end of the extender is a bracket member for clasping the top of the wall which is to be plumbed. The tubular member is equipped with a threaded rod disposed therein. The rod is received by a threaded end of the extender, so that the total length of the apparatus may be increased by rotating the tubular member in one direction, and alternatively the total length of the apparatus may be decreased by reversing the direction of the rotation of the tubular member, thereby easily and accurately plumbing the wall.

Abstract: Apparatus for dispensing a surfactant for use in extinguishing fires, particularly wildfires, which provides two separate means for storing the surfactant and the water needed to expand the surfactant into a high grade of foam to be extinguished over the wildfire. The apparatus also incorporates a stationary mixing device for mixing and re-mixing the water and surfactant to the extent required to produce the high quality of foam needed to extinguish wildfires. An emergency valve release is incorporated such that the entire apparatus of the invention will become operative with a single release of this valve by the operator of the equipment incorporating the inventive apparatus. The inventive apparatus can be advantageously installed on heavy equipment used in fighting wildfires.

Abstract: An optical thin film filter for the spatial and spectral separation of two or more transmitting bands of radiant energy. For a two band filter the filter has a substrate substantially transparent to radiant energy in the transmitted bands. On one surface of said substrate is a multilayer interference coating that transmits both wavelength bands of interest. On the other surface of said substrate (or on the same surface) are two sets of non-overlapping butted, parallel stripes with one set being alternately interspersed with the other. The widths of said stripes are varied to provide for precisely defined regions of spatial and spectral delineation. One set of stripes is capable of transmitting one of the bands of interest and reflecting all others, while the second set of stripes is capable of transmitting at least one band different from the one band transmitted by said first set of stripes and reflecting all others.

Abstract: A device for the injection and mixing of steam into a fluid stream. A conduit which is cylindrically-shaped is provided for carrying a fluid such as water. A tubular conduit is then provided for discharging steam in the vicinity of a material mixing apparatus which possesses a plug for intermittently blocking steam discharge within the cylindrically-shaped conduit. A material mixing apparatus is positioned with the cylindrically-shaped conduit for mixing steam with the fluid stream, the material mixing apparatus being in the shape of the conduit and having openings containing mixing elements each of which induce a rotational angular velocity of the same sign to the fluid.

Abstract: A peptide having anti-HIV activity consists of an amino acid chain represented by Asn-Phe-Pro-Leu-Ile-Ile-Lys-Asn-Leu-Lys-Ile-Glu-Asp-Ser-Asp-Thr-Tyr-Ile-Cy s-Glu-Val-Glu-Asp-Gln-Lys-Glu. The Cys underlined in the above amino acid chain may be replaced by Phe, Ser, Cys.sup.Acm or Cys.sup.Bzl.

Abstract: A device for conveying cup-shaped objects, such as the bodies of two piece cans located between the bed of a mechanical press and a lower die shoe. A plenum is provided with a perforated upper deck surface for directionally expelling air which, together with an exhaust duct located upstream of the perforated upper deck surface, act to move the cup-shaped objects to a down-stream location for further processing.

Abstract: A chuck device for a dental handpiece includes a dental bur, a sleeve for accommodating and attaching the dental bur, a push button for detaching the dental bur, and a connecting-removal unit for removably holding and securing the dental bur within the sleeve. The connecting-removal unit includes an elastic engagement member normally engaging with an engaging projection of the dental bur for securing the dental bur within the sleeve, and an opening for accommodating the elastic engagement member within the sleeve or an upper sleeve portion for fitting the elastic engagement member on the outer side of the sleeve. The elastic engagement member has a slit and can be extended apart. When the push button is pushed downwards, the cam surface of the push button abuts on and extends the elastic engagement member apart to release the engagement between the elastic engagement member and the engaging projection of the dental bur to detach the dental bur from the sleeve.

Abstract: An assembly kit for a busbar system made of holders and of busbar sections that can be fixed in position or are fixed in position in receptacles of the holders, which receptacles are spaced from and parallel to one another.

Abstract: A busbar system with holders, the tops of the holders having a number of receptacles for busbar sections running at a specific interval and parallel with respect to one another, the busbar sections being fixed in position in these receptacles. The busbar system can be easily extended using prefabricated units with the busbar sections being completely covered on the side facing the mounting surface. The holders are designed as rectangular carrier plates aligned with the longitudinal sides of the plates parallel to the busbar sections. The busbar sections terminate flush with the narrow sides of the carrier plates. On the narrow sides of the carrier plates, the facing end sections of the receptacles and/or the busbar sections accommodate one-half of connecting elements aligned in the longitudinal direction of the busbar sections. The connecting elements can be connected so as to be electrically conducting when the holders are connected in a row with the ends of busbar sections abutting.

Abstract: A holder with busbars for a busbar system to connect electrical equipment, the holder consisting of a rectangular and plate-shaped insulating support with receptacles for busbars located in its top and a channel-shaped receptacle into which the insulating support is inserted. A number of busbar sections are fixed in position in the receptacles and run parallel to one another at uniform intervals.

Abstract: A holder with busbars for a busbar system, the holder being an insulating support with receptacles located in its top. A number of busbar sections are fixed in position in the receptacles at regular intervals parallel to one another. Protected wiring of electrical equipment connected to the busbar sections is achieved by the insulating support being formed as a carrier plate that extends over the lengths of the busbar sections fixed in position in the receptacles; by at least between adjacent busbar sections, a row of openings being located in the carrier plate, the openings being aligned one above the other perpendicularly to the busbar sections; and by recesses serving as cable ducts being located in the bottom of the carrier plate, the recesses connecting the openings aligned one above the other perpendicularly to the busbar sections to one another and to the longitudinal sides of the carrier plate running parallel to the busbar sections.

Abstract: A system for fixedly securing an illumination instrument to a ceiling of a building structure, comprises a flexible suspender adapted to be connected to an under surface of a slab of the building structure and extending generally vertically therefrom, a suspender grasping assembly for releasably grasping the flexible suspender to move therealong in a vertical direction and to be held at any desired height, and engaging member frictionally engaging with an outer periphery of the suspender grasping assembly to hold an illumination instrument support member at a temporal set position.