Abstract: A disposable sheet to replace the rubber blanket of an offset printing machine basically consists of a flexible carrier sheet and a coating on one face of the sheet consisting essentially of a cellular latex of a synthetic elastomer free from inorganic fillers in more than incidental trace amounts and deriving its capability of receiving an inked image from partial cross linking.

Abstract: In a rail switch arrangement in which an elongated rail is fixedly mounted on supporting structure and an elongated rail blade is moved on the supporting structure toward and away from a position contiguously adjacent the fixedly mounted rail, a sheet member of synthetic resin composition is fixedly secured to a bottom face of the rail blade and slidingly engages the approximately horizontal top face of the supporting structure during the movement of the rail blade.

Abstract: A recording sheet consisting mainly of fibrous material is capable of displaying a colored image when contacted under pressure with substantially colorless crystal violet lactone and similar dye precursors if at least 3% of the fibrous material is constituted by uniformly distributed asbestos fibers. Sheets having adequate strength for carbonless copying should not contain more than 30% asbestos fibers. Stronger colors are obtained if the sheet further contains a mixture of .gamma.-alumina and .gamma.-alumina precursors in an amount of 2% to 20% of the weight of the fibrous material, the mixture containing 1% to 30% water volatile at 1000.degree. C, and being converted substantially entirely to .gamma.-alumina when heated from 300.degree. to 1000.degree. C.

Abstract: Heat of liquefaction and solidification is transmitted between a heat storing material undergoing the phase transition and a heating medium in a heat exchanger by means of a partly gaseous, partly liquid fluid sealed in a heat pipe a portion of which is received in the container for the aforementioned material, and which is equipped with fins in direct contact with the heat storing material while a second portion of the heat pipe is in thermal contact with the heating medium in the heat exchanger.

Abstract: A control valve particularly suitable for service in mechanical refrigeration systems has a spherical valve body permanently engaging an annular seal and is operated by turning the valve body about an axis perpendicular to the direction of fluid flow through the central opening in the valve seat. A circumferentially flaring notch in the outer circumference of the valve member by-passes the valve seat in the open angular position of the valve member and communicates only with the inlet or the outlet of the valve in the closed valve position.

Abstract: Peptide mixtures having relatively narrow average molecular weights and characteristic amino acid compositions and a process for preparing the same from a collagenous material or gelatin are disclosed. The peptide mixtures have unique properties and are useful as a water- or moisture-retaining agent for cosmetic articles or foods, a foaming agent for foods, a bitterness-blocking agent for medicines or a nutritional component for soft drinks.

Abstract: The hot mixture of solid slag particles and water produced by contacting water with the molten slag released from a blast furnace is introduced into a tank equipped with an overflow and a filter at the overflow which permits a portion of the water and a minor fraction of slag fines to overflow. The major fraction of larger slag particles collects at the bottom of the tank and is pumped as a slurry containing the remainder of the heated water to a remote sedimentation zone where the slag particles and the water of the slurry are separated.

Abstract: Solar energy is collected by a plate-shaped panel of pliable plastic construction. The two major walls of the panel whose edges are sealed to each other consist of transparent and black plastic respectively and bound a cavity. The panel is expanded by air introduced by a blower and discharged through a restricted outlet. A radiation trap of pleated, transparent plastic sheeting is fastened in the cavity to the transparent wall. The hot air discharged from the panel when it collects solar radiation provides all the necessary energy for operating an absorption refrigeration system of the Electrolux type.

Abstract: The storage stability of strong or concentrated, aqueous solutions of cyanamide, even those conventionally stabilized with acid, is enhanced by small amounts of lower alkyl esters of carboxylic acids having preferably a pK.sub.a.sup.25.degree. value of 3.8 or less.

Abstract: A light concrete prepared from a mixture of Portland cement, cellular aggregate, and an admixture including a melamine-formaldehyde condensate carrying sulfo groups for reducing the need for mixing water, an alkaline earth metal stearate as a water repelling material, and polyethyleneglycol has greater mechanical strength at lower density than an otherwise identical concrete containing only two ingredients of the admixture.

Abstract: A lacquer consisting essentially of a uniform dispersion or solution of 8% to 16% polymerized lower alkyl acrylate and/or methacrylate having 1% to 20% free carboxyl groups, 2.5% to 10% polymethyl or polyethylmethacrylate, 5% to 10% water-soluable, thermosetting melamine resin, the balance being a volatile medium consisting essentially of water and a lower alkanol when deposited on a plastic film and cured at a temperature at least sufficient to volatilize the solvent, forms a transparent, abrasion-resistant coating.

Abstract: The rotating cutter head of a reamer is formed with a recess, open in a radially outward direction and one circumferential direction relative to the axis of rotation, and a blade is retained in the recess between opposite, radially extending faces of the head and of a clamping shoe that may be adjusted inward of the recess. Two face portions of the blade are engaged by the respective faces of the head and shoe in area contact in planes which converge in a radially outward direction at a small acute angle to prevent movement of the blade from an initial, radially adjusted position under cutting stress.

Abstract: Paper having adequate mechanical strength and stiffness for use in xerographic equipment at a very low weight is prepared from a stock containing untreated cellulose fibers as well as cellulose fibers stiffened by impregnation with melamine-formaldehyde precondensate or methylolurea, curing of the initially water-soluble resin, and reaction of the cured resin with polyvinyl alcohol or starch ether.

Abstract: An electrical contact to be made between an electrically insulated first conductive strip and a socket member having an electrical contact element therein in which a crimpable, electrically conducting, second strip is caused to pierce the first strip at two separate points after which the passed-through ends of the second strip are folded over into a region of the first strip between the two pierced points to pierce again the insulation of the first strip to effect a second electrical connection with the first strip, and the resultant crimped joint is then inserted into the socket member until at least two electrical connecting points are established between the crimped second strip and the contact element in the socket member.

Abstract: A window is mounted on supporting structure of a motorcar body on a carrier for limited vertical movement. A motion-transmitting linkage connecting the carrier to a lifting drive includes a link which is movably secured to the carrier and the supporting structure. One of the securing devices for the link includes a forked guide channel having the shape of a tuning fork and bounding a keyhole-shaped guide slot. A guide pin has a shank slidably received in the slot and two enlarged heads outside the slot on respective ends of the shank. The width of the enlarged slot part is sufficient to pass one of the heads while the remainder of the slot is narrower than the corresponding dimensions of both heads for securing the pin against transverse movement out of the narrow slot part.

Abstract: A shoulder bag has a tubular carrying strap whose hollow end portions are in communication with the hollow receptacle of the bag.

Abstract: The window in a door of an automotive vehicle is lifted by an operating lever pivotally mounted on a supporting structure in the door which includes a releasably mounted carrier member of sheet metal. The weight of the window is partly balanced by a spiral spring one of whose ends is attached to the lever. The other end is secured in a gap between two integral lugs of the carrier member which are offset at right angles from the major face of the carrier member.

Abstract: The casing of apparatus for purifying water encloses a chamber and is formed with two orifices spaced from the chamber in opposite directions and communicating with the same for gravity flow of the water to be purified from one of the orifices through the chamber and out of the other orifice. Two electrodes spacedly mounted in the chamber for flow of the water therebetween are conductively connected to an electric battery in the casing by circuitry which causes current to flow between the electrodes through the water when the water and the battery satisfy proper conditions for the functioning of the apparatus, such conditions being indicated by a sensible signal. A compartment in the casing, sealed from the electrode chamber, encloses almost all the circuitry.