Abstract: A method and apparatus for forming a continuous cooling liquid passageway through two separable injection mold dies when they are closed with a supply system flowing cooling liquid at a less than atmospheric pressure at least at the junction of the dies through the passageway only when the dies are closed and air when the dies are opened and the passageway is discontinuous.

Abstract: A method and system for cooling an injection molded plastic article by forming a portion of a mold cavity of fluid permeable porous material that communicates with a cooling liquid passageway and subjecting the cooling liquid to different pressures to vary the flow of fluid through the porous plug.

Abstract: A chopping power supply controls power to the bifilar winding phases of a stepping motor with the power being applied to one winding until a selectable value of current flows and is then removed for a fixed duration to have induced current in the other winding be directed back to the power source while still producing usable magnetic flux and in which each phase has its own chopper circuit with both being operated at super-audible rates at least during standstill operation.

Abstract: A scaffold stabilizer for use on a scaffold platform, consisting of a multiplicity of longitudinal planks of uniform thickness assembled in side-by-side contact to form a supporting floor or platform for workers. The stabilizer comprises a generally C-shaped unitary metallic clamping member comprising upper and lower plate members rigidly connected to an end plate member, the upper and lower plate members being sufficiently long and defining therebetween an opening sufficiently wide and long to receive a multiplicity of flooring planks in close side-by-side engagement. At least one of the plate members is bowed towards the other so as to provide a tight frictional engagement with one surface of the planks present therein. The upper and lower plate members are provided with means for securing and tightening the ends thereof together at a location adjacent the outermost plank contained within the clamping member.

Abstract: A support structure, such as for use in supporting a solar panel-reflector panel system on a roof top, said structure having a generally V-shaped cross-section and comprising opposed wing members which are commonly supported by an elongate tubular member of rectangular cross-section which comprises the base of said V-shape. The wing members, comprising the arms of said V-shape, are adapted to be supported solely by said tubular member, each at an angle of from about 5.degree. to about 85.degree. above horizontal depending upon the end use requirements such as geographic location. For solar panel-reflector panel systems, preferably the support wing for the solar panels is mounted on the tubular member in fixed position at an angle of from about 50.degree. to 70.degree. above horizontal while the support wing for the reflector panels is hingedly mounted on the tubular member for adjustable positioning between a working angle of from about 10.degree. to 30.degree.

Abstract: Correction compositions for the masking of erroneous typed images preliminary to the typing of correct images thereover, characterized by the presence of a volatile solvent mixture having a predetermined evaporation rate at ordinary room temperatures, a high flash point and providing vapors which are non-flammable and non-toxic as a result of drying of the compositions under normal office conditions. The solvent mixtures used according to the present invention comprise methyl chloroform and perchlorethylene.

Abstract: Pneumatic nebulizer and method for uniformly supplying variable small amounts of flowable liquid into a gas flow to form a stable dispersion having the appearance of a natural fog and consisting essentially of microscopic particles of said liquid dispersed in said gas. The nebulizer comprises a means for controlling the rate of flow of said liquid, a mixing element having one or more narrow liquid orifices through which the liquid is supplied in uniformly fine amounts, a filming surface onto which the liquid is drawn and stretched and a gas orifice which introduces the stretched liquid film into the gas flow.

Abstract: A pneumatic microcapillary nebulizer adapted to accept a supply of flowable liquid, such as water, and reduce the liquid to an ultrafine dispersion of particles in a propellant gas, such as air. The microcapillary nebulizer comprises a mixing element having a liquid conduit comprising a microporous capillary element having a multiplicity of liquid passages and exit orifices, a gas conduit having a gas orifice and a filming-surface having an edge comprising said gas orifice and communicating with said liquid exit orifices. All the liquid flowing to said filming surface must pass through said capillary element wherein it is retained in the absence of external forces and whereby it may be rendered substantially free of undesirable solid impurities of microscopic size or larger.

Abstract: There is disclosed a unitary vacuum transducer or pump capable of obtaining a high degree of vacuum using standard shop compressed air fed to a single inlet in the transducer from a single source of compressed air, each venturi tube having compressed air supply means associated with said inlet and terminating in a jet-producing nozzle. The transducer comprises two or more venturi tubes arranged in series with the entrance section of one venturi tube being connected to the exit section of another smaller venturi tube the entrance section of which is connected to the exit section of a yet smaller venturi tube or to the orifice of a vessel containing air or other gas to be rarefied.

Abstract: A measurement line marker for the placement of a multiplicity of visible marks on a surface, which marks are accurately spaced from each other by any desired distance, such as sixteen inches on center, and which are located in a straight line so as to provide position marks, such as for the location of studs or other building materials. The marker comprises a thin non-stretchable flexible metal wire, a flexible plastic sleeve thereover having a uniform thickness and having a smooth, non-receptive surface, and a multiplicity of narrow receptive sleeve segments which are spaced from each other by any desired predetermined distances, said segments having a thickness approximately the same as said flexible sleeve and being porous and selectively receptive to marking chalk.

Abstract: Pressure-sensitive reusable transfer elements of the squeeze-out type having a microporous resinous ink-releasing layer firmly bonded to a flexible foundation. The invention is characterized by the use of a bonding layer which is applied to the foundation as an aqueous composition comprising a water-dispersible, water-insoluble resinous binder material which dries to form a tacky, adhesive layer.

Abstract: Pressure-sensitive master sheets are produced by printing ink-releasing images onto a master sheet by silk screen techniques using a semi-solid printable ink composition comprising a wax and/or resin binder material, an incompatible oleaginous material, colorant and a volatile vehicle. The solidifed printed images comprise a porous, spongy network of the binder material containing within the pores thereof the oleaginous material and colorant as a pressure-exudable ink. The printed master is suitable for the production of several copies in a dry pressure-copying process.

Abstract: A combination toilet seat and bidet adapted for use on conventional toilets, comprising a seat portion and a cover portion hingedly-connected to each other to form a unit which is preferably pivotably-connected to a mounting member which is adapted to be connected to the seal-mounting holes of a conventional toilet. The cover portion preferably includes a water spray attachment which is adapted to be connected to a water source. The attached unit is convertible between normal seat-down position and cover-under or bidet position by lifting the unit from the front, pivoting it 180.degree. on the mounting member and then lowering the front of the unit so that the unit rests on the toilet in inverted or upside down position.

Abstract: A pressure-roller apparatus comprising two compression rollers providing a pressure nip therebetween for the introduction of sheets or other thin members to be compressed and fed. The degree of pressure in the nip is variable by means of one or more adjustment roller assemblies comprising adjustment rollers which are substantially shorter in length than said compression rollers and which engage one of said compression rollers at one or more points intermediate its ends to provide an intermediate and balanced pressure adjustment which avoids bowing of said compression roller.

Abstract: A novel inking method and apparatus particularly well suited for the re-inking of used fabric ribbons such as of the chain-printer type. The apparatus preferably contains means for moving a fabric ribbon through an inking station onto a take-up roll, means in advance of the inking station for adjusting the edge-alignment of the ribbon, embossed or gravure inking means for supplying ink directly to the ribbon without compression of the ribbon, illumination means to facilitate the inspection of the ribbon for flaws and for uniformity of ink, and shut-off means for stopping the movement of the ribbon at any desired position.

Abstract: A dry duplicating method comprising the steps of pressure-imaging a continuous master web with images capable of exuding liquid ink under the effects of contact pressure such as roller pressure and collecting the imaged master web on a roll for duplicating use. The master web is such that at least one surface is receptive to the pressure-applied images but neither surface is capable of absorbing the liquid ink to any substantial degree. The imaged web is duplicated by continuously bringing it into surface contact with an ink-absorbent copy web while pressure is applied to exude the liquid ink from the master images onto the copy web to form a duplicate copy, after which the web is continuously rolled up on another roller for reuse.

Abstract: Pressure-sensitive transfer elements comprising water-applied resinous base coating supporting a resinous ink-releasing layer, characterized by the undercoating consisting essentially of a water-dispersible, water-insoluble hydrophilic polyurethane resin.

Abstract: Transfer elements for exuding liquid ink to a copy sheet under the effects of imaging pressure, and the method of making such transfer elements. A resinous solvent composition comprising a blowing agent and a soluble solid is applied to a coating surface, the blowing agent is activated and the soluble solid is dissolved out to form a porous resinous layer which is thereafter impregnated with a pressure-exudable liquid duplicating ink.

Abstract: Pressure-sensitive transfer sheets and ribbons having a flexible plastic foundation carrying a colored layer comprising pressure-transferable imaging material, the plastic foundation consisting of a laminate of tensilized, asymmetrically-oriented polyethylene terephthalate polyester film having a high tensile strength and a low % elongation and nylon film which has a substantially lower tensile strength and a substantially higher % elongation than said tensilized film.

Abstract: Apparatus for checking the edge alignment of a moving web and for making lateral adjustments in the position of the moving web to correct for deviations.