Abstract: This invention relates to a developing device for printing plates comprising a developing chamber, rotatable printing plate support means in said chamber, spray nozzle means directed at said printing plate support means, vertically reciprocatable rotatable brush means mounted above said printing plate support means, means for supplying fluid to said spray nozzle means, and means for actuating said printing plate support means and said brush means.

Abstract: This invention relates to an improvement in the process for the production of water-adsorbing, but at least partially water-insoluble cellulose ethers in which cellulose is alkalized in a liquid reaction medium and etherified in a manner such that by etherification only an at least largely water-soluble carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose or methyl hydroxyethyl cellulose is produced, and in which the cellulose is reacted in an alkaline reaction medium before, during, or after the etherification with a modification agent reactive with the still free hydroxyl groups of the cellulose anhydro glucose groups, said modification agent having one of the formulae ##STR1## in which R.sub.1 is hydroxyl, an acylamino or esterified carbamino group, andR.sub.2 is hydrogen or a carboxyl group,The improvement comprising effecting alkalization, etherification, and modification in a liquid reaction medium other than isopropyl alcohol.

Abstract: An apparatus for developing photosensitive material with a gaseous medium comprising a housing having a developing chamber therein, at least one rotor in said developing chamber, said rotor extending over substantially the entire width of material to be developed and being mounted at a distance of about 0.05 to 20 mm from the material to be developed, a device for introducing gaseous developer medium between the rotor and the interior walls of said chamber, and a device for passing material to be developed through the apparatus, whereby it contacts said gaseous developer medium.

Abstract: This invention relates to an improvement in the process for the manufacture of water-adsorbing but at least partially water-insoluble cellulose ethers in which cellulose is alkalized in a liquid reaction medium and reacted with an etherification agent in a manner such that an at least preponderantly water-soluble cellulose ether would be obtained in the case of a mere etherification process and in which, prior to, simultaneously with, or after the etherification process, a reaction is effected with a crosslinking agent which is polyfunctional towards cellulose in an alkaline reaction medium,The improvement comprising employing bis(acrylamido)-acetic acid as the crosslinking agent.

Abstract: This invention relates to an improvement in the process for the production of water-adsorbing, but at least partially water-insoluble, cellulose ethers in which cellulose is alkalized in a liquid reaction medium and etherified in a manner such that by etherification only an at least largely water-soluble carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose or methyl hydroxyethyl cellulose is produced, and in which the cellulose is reacted in an alkaline reaction medium before, during, or after the etherification with a cross-linking agent which is polyfunctional towards cellulose and selected from the group consisting of acrylamido methylene chloroacetamide, dichloroacetic acid, phosphorous oxychloride, or a compound in which at least two groups functional towards cellulose are ##STR1## the improvement comprising effecting alkalization, etherification, and cross-linking in a liquid reaction medium other than isopropyl alcohol.

Abstract: This invention relates to an improvement in the process for the preparation of printing forms or metallic etchings from electrophotographic or electrographic reproduction materials composed of a support with a photoconductive or high-ohmic layer thereon, by charging and image-wise exposure, or by image-wise charging, development of the electrostatic image with a finely-divided toner, fixing, and removal of the layer in the image-free areas by means of a decoating solution, the improvement comprising developing the electrostatic image with a developer which reacts at least superficially with the image areas at room temperature, thereby simultaneously effecting development and resistance to the decoating solution, or developing the electrostatic image with a developer which reacts with the decoating solution and thereby deactivates it in the image areas.

Abstract: This invention relates to an improvement in a sheathed, hollow, cylindrical stick composed of a flexible tube folded by longitudinal shirring, the improvement comprising a cylindrical, flexible jacket means enveloping said stick and projecting over the ends thereof, parts of the projecting portions touching the front walls of said stick with their inner sides, annular disc means on said projecting portions, and said projecting portions being inverted outwardly around said disc means in a manner such that the inner walls, the end surfaces and the outer walls of said disc means are tightly covered, and said inverted portions being parallel to said jacket means and close to the exterior thereof. The invention also includes an embodiment wherein annular disc means are inserted inside the jacket means and adjacent to the front walls of the stick, the projecting portions of the jacket means are inverted around the annular disc means and clamping means are inserted in the opening of the annular disc means.

Abstract: This invention relates to a process for the transport through a copier of an original having a leading and a trailing edge, which comprises transporting the original at least once along a path wherein it passes in the stated order a third point, an illumination zone, a fourth point, a first point, a second point and, if transported more than once, the first point again wherein if the trailing edge has not passed the third point when the leading edge passes the second point the path length between the first and second points is extended and wherein if the trailing edge has not passed the second point when the leading edge passes the first point the path length between the illumination zone and the first point is extended and wherein the speed of the original past the first point may be increased relative to its speed in the illumination zone at least while an extended path is followed between the zone and the first point and after the trailing edge has passed the second point.

Abstract: This invention relates to a material for electrophotographic reproduction, which comprises a conductive support having a sensitized photoconductive insulating layer thereon containing at least one photoconductor and containing, as a sensitizer, a polymethine dyestuff capable of absorbing radiation of a wavelength within the spectral range of 400 to 550 nm.

Abstract: This invention relates to an improvement in the process for the preparation of a planographic printing form in which a recording material comprising a support of anodically oxidized aluminum and a recording layer thereon is imagewise irradiated with a laser beam, thereby rendering the irradiated portions of the recording layer oleophilic and/or insoluble, and the non-irradiated portions of the recording layer are then removed, where necessary, by washing with a developer liquid, the improvement comprising an oxide layer on said support weighing at least 3 grams per square meter.

Abstract: This invention relates to novel compounds having the formula: ##STR1## wherein R.sup.1 is a straight-chain alkyl group having 8 to 18 carbon atoms, R.sup.2 is a straight-chain alkyl group having 1 to 3 carbon atoms, R.sup.3 is a straight-chain alkyl group having 8 to 16 carbon atoms, and X is chlorine or bromine. The invention further relates to novel microbiocidal compositions containing the novel compounds, and also to a process for preparing the novel compounds.

Abstract: In an apparatus for producing from a developer solution a gaseous developer medium for diazotype materials, which apparatus includes an inclined surface for passing the developer solution through a vaporizing region from a first end to a second end thereof, heater elements disposed along the vaporizing region, the temperature in the region of the second end being at least 25.degree. C higher than the temperature in the region of the first end and the temperature increasing with the distance from the first end, and a sipon at the second end for collecting the condensate of the vaporized solution. The siphon has a heater element for heating the solution collected therein to the temperature prevailing in the region of the second end to release more gaseous developer medium before the solution leaves the vaporizing region.

Abstract: This invention relates to a process for the manufacture of absorptive polymers which are at least preponderantly insoluble in water, but capable of swelling in water, which comprises etherifying polyhydroxy methylene in a homogeneous phase in an aqueous alkaline solution with an .alpha.-halogen carboxylic acid, and prior to, during, or after the etherification process performing a further reaction with a cross-linking agent which is polyfunctional towards polyhydroxy methylene in an alkaline medium.

Abstract: This invention relates to a mounting apparatus for aperture cards comprising cutting means for severing individual filmed images from a strip of film, said cutting means including a knife unit and a counter-knife unit, said knife unit being part of a plunger means which serves to simultaneously press the severed filmed image upon a mounting card,Resilient counter-pressure frame means mounted opposite said plunger means,And projection means including a light source and a condenser lens, the latter being mounted in said plunger means.

Abstract: A method for grinding the tooth flanks of a roughed-out, annular, internally-toothed gear wheel wherein the pitch circle of the internally-toothed gear wheel is rotated about or rolled off a fixed circle having a diameter equal to the pitch circle of an externally-toothed pinion, adapted to mesh with the finished internally-toothed gear wheel; and, simultaneously with the rotation of the gear wheel, a grinding wheel is rotated on an axis parallel to the plane of the gear wheel, is reciprocated through the interior of the gear wheel along an axis parallel to the axes of the pitch circle of the gear wheel and the fixed circle and maintained a fixed distance from the axis of the fixed circle, except for normal infeed, and has a circumferentially-disposed grinding surface whose cross-sectional profile is equivalent to the profile of at least a part of the profile of at least one tooth of the pinion; the ratio of the diameter of the fixed circle to the diameter of the pitch circle of the gear wheel being an aliqua

Abstract: This invention relates to a process for preventing undesired contact with land or water by low-flying aircraft which are assigned a minimum altitude and which are provided with instruments for measuring altitude, airspeed, angle of path, and transverse acceleration,Comprising measuring the rate of descent (H),transverse acceleration (b.sub.Q), when gravitational acceleration is eliminated,And altitude (H) to thereby ascertain whether the aircraft is above a given limiting altitude (H.sub.limit) determined from its ability for transverse acceleration and its flight data,And correcting the aircraft by the maximum feasible transverse acceleration (b.sub.Q max) when for a given measured value of altitude (H), the altitude is below the limiting altitude (H.sub.limit).

Abstract: An improvement is disclosed in a helicopter adapted to fly while moored to a ground station, being remote-controlled therefrom and having a device for automatic stabilization of the flight attitude, and in which the mooring cable is wound-on and wound-off of a cable drum by a drive device, the improvement comprising a stabilizer in the helicopter adapted to be switched to different operating ranges, and a switching device in the ground station coupled with the cable drum, the switching device being adapted to transmit signals for the stabilizer in dependence upon the wound-off length of the mooring cable.

Abstract: This invention relates to an improvement in a paper support for receiving on one side thereof layers of print and/or varnish, in particular for receiving transfer images, the improvement comprising a water-permeable covering layer on the other side containing polyvinyl alcohol, a polysiloxane, and a polyalkyleneglycol wax. The invention also includes an article employing the improved paper support.

Abstract: This invention relates to a leader of an information carrier web suitable for photoelectric control, comprising a polyester film oriented by biaxial stretching, having one layer, and a transparency of at least 60 per cent when exposed to light of a wavelength of 750 nm.

Abstract: This invention relates to an apparatus for separating objects, particularly for drawing-off individual heddles from a pack, comprising substantially U-shaped, pivotal, reciprocatable pipe means adapted to be mounted adjacent a pack of heddles and to contact a heddle with the end thereof in the working position thereof, and means for creating a partial vacuum in said pipe means.