Abstract:
A method of treating flat glass to reduce its vulnerability to scratching, e.g. during storage and/or transit, wherein a transparent film of a cationic surface active agent is adsorbed on the glass by applying an aqueous solution of the surface active agent to the glass on the production line and drying the glass. The solution may be applied to the glass after is has been washed, near the end of the production line, using for example an anionic surface active agent as detergent. Alternatively, a solution containing both a cationic surface active agent and an nonionic surface active agent as detergent may be applied to the glass to wash it, followed by rinsing with water and drying.
Abstract:
A filter rod making machine wherein a rotary brush which is installed in a housing normally atomizes successive increments of a stream of liquid plasticizer which is supplied thereto by a varibale-delivery pump at a rate matching the speed of transport of a permeable tow of filamentary filter material through the housing so that the housing confines a quantity of residual plasticizer and the tow thereafter continuously withdraws atomized plasticizer from the housing at the rate at which the pump supplies liquid plasticizer into the range of the brush. When the tow is arrested, at least some of the residul plasticizer is evacuated from the housing and, on renewed starting of the prime mover which drives the tow, the plasticizer is admitted at a rate higher than normal rate, either by resorting to a separate pump or by gathering the evacuted residual plasticizer during the interval of idleness of the prime mover and readmitting the gathered residual plasticizer into the housing during acceleration of the tow to normal speed so as to rapidly reestablish the quantity of residual plasticizer which is necessary to ensure that a state of internal equilibrium prevails in the housing, namely, that the rate of admission of liquid plasticizer into the range of the brush again equals the rate at which the running tow removes atomized plasticizer from the housing.
Abstract:
A filter rod making machine wherein a rotary brush which is installed in a housing normally atomizes successive increments of a stream of liquid plasticizer which is supplied thereto by a variable-delivery pump at a rate matching the speed of transport of a permeable tow of filamentary filter material through the housing so that the housing confines a quantity of residual plasticizer and the tow thereafter continuously withdraws atomized plasticizer from the housing at the rate at which the pump supplies liquid plasticizer into the range of the brush. When the tow is arrested, at least some of the residual plasticizer is evacuated from the housing and, on renewed starting of the prime mover which drives the tow, the plasticizer is admitted at a rate higher than normal rate, either by resorting to a separate pump or by gathering the evacuated residual plasticizer during the interval of idleness of the prime mover and readmitting the gathered residual plasticizer into the housing during acceleration of the tow to normal speed so as to rapidly reestablish the quantity of residual plasticizer which is necessary to ensure that a state of internal equilibrium prevails in the housing, namely, that the rate of admission of liquid plasticizer into the range of the brush again equals the rate at which the running tow removes atomized plasticizer from the housing.
Abstract:
A spill preventing diaphragm attachment for a paint spray gun paint cup as shown. The diaphragm is engaged around the mouth of the paint cup and forms, with the undersurface of the paint cup lid, a chamber above the paint in the cup that is deeper at one side than the other. At the deep side, oriented 180.degree. away from the vent opening in the lid is a vent opening in the diaphragm. Any paint that might flow through the diaphragm vent opening as a result of tipping the spray gun drains back into the cup as soon as the gun is righted. The diaphragm is readily replaceable without tools.
Abstract:
A spread out foraminous tow of tensioned filamentary filter material is transported through a housing between an upper and a lower rotating cylindrical brush. The upper brush propels atomized liquid plasticizer against the upper side of the tow whereby a certain amount of plasticizer penetrates through the tow and is gathered in the housing within the range of bristles on the lower brush which propels the gathered plasticizer against the underside of the tow. The rate of feed of plasticizer to the upper brush is varied in response to changes in the speed of the tow, and the brushes are arrested when the transporting rolls for the tow are brought to a standstill. The lower portion of the housing constitutes a trough which surrounds the lower half of the lower brush and from which the gathered plasticizer is evacuated when the brushes are idle.
Abstract:
A recirculating sprayer adapted for mounting on a vehicle is improved for use at increased travel speed and for operation in higher wind conditions by angling the solid spray streams forwardly or rearwardly from a direction transverse to the travel direction. The sprays are employed in criss-cross, opposite pairs, with the spray stream patterns of adjacent pairs of spray nozzles abutting or overlapping one another for full coverage of all upstanding weeds or crops in an area traversed by the sprayer. A series of collector mats or panels may be arranged transverse to the travel direction, with sprays trained thereon for contacting each weed twice in its upstanding position once by each spray of a pair; the weeds may also be contacted once more as they are bent forward to pass beneath the panels and a reservoir thereunder. The collector may also be arranged in panels parallel to the travel direction, for increased ease in negotiating sloping terrain. Spray liquid is collected from the collector panel(s) into reservoirs therebelow and is recirculated for reuse.
Abstract:
A cleaning system for spray equipment, such as paint spray guns and cups, makes use of a stack-up of containers which operate under pressure. Resting on the ground is a tank for cleaning solvent into which air pressure is introduced when needed. Supported above the tank is a spent-fluid collecting receptacle which in turn supports a cleaning cabinet in which a spray gun and cup are suspended for cleaning. All portions of the system are closed during operation except for a vent in the cabinet in which there is a filter for permitting air to escape and which collects and returns dirty solvent to the portion of the cabinet from which it flows through another filter to the collecting receptacle and from there back to the tank. A system of piping has a three way valve capable of directing air above to the cabinet or a mixture of air and cleaning solvent, or shutting off the supply of both air and cleaning solvent.
Abstract:
A recovery system is disclosed herein which includes spraygathering exhaust hoods positioned opposite the spraying nozzles. The exhaust hoods cooperatively communicate with inlet ducts which, in turn, connect to a catch box arrangement. An exhaust duct exits from the catch box. Connected in line with the exhaust duct is an exhaust fan arrangement which creates an airflow through the hood-inlet duct-catch box-exhaust duct connection to thereby attract any overspray in the vicinity of the exhaust hoods. The overspray is sucked into the hoods down the inlet duct and is deflected towards the bottom of the catch box by a baffle arrangement within the box. The deflected spray-air mixture physically contacts the walls and bottom of the catch box with a small percentage exiting via the exhaust duct network. The greater percentage of the captured spray is deposited on the bottom of the catch box in an accessible tray, from where it can be readily recovered.
Abstract:
Apparatus for applying Aquadag coating to the funnel of a cathode ray tube envelope comprises means for supporting the envelope with the sealing land exposed, and means for spraying an Aquadag solution upon the wall of the funnel. A deflector is interposed between the spray means and the edge of the funnel to intercept that portion of the spray directed toward that edge while another member is positioned adjacent the inside wall of the funnel to establish an orifice between that member and that portion of the funnel wall normal to the sealing land. The envelope supporting means is rotated, relative to the spray means, to apply a uniform coat of Aquadag upon the funnel while an air pump establishes a pressure differential between the inside of the envelope and the outside to generate a flow of air across the sealing land of the funnel, up through the orifice and into the funnel to prevent deposit of coating material upon the sealing land.
Abstract:
A centrifugal dispensing device particularly adapted to intermittent application of a selected liquid such as glue, paint and the like. The device includes a disc positioned to rotate in a horizontal plane. Conduits are provided for feeding selectively supplies of the selected liquid and a solvent therefor to the disc. A shield is movably disposed so as to be selectively interposed between the disc and the work. Means are provided for moving the shield to a position between a work piece and the disc when solvent is applied to the disc, and for moving the shield away when the selected liquid is applied to the disc.