Abstract: Disclosed is a method and composition useful for stripping paint films. The stripping composition is phenolfree and contains a synergistic combination of amine compounds in an aqueous alkaline solution and stripping is effected by contacting the surface with the solution.

Abstract: An apparatus for automatically maintaining a ship on a pre-selected course in which a trim tab is secured to a rudder. The trim tab contains a motor therein which is responsive to an electric signal such that the motor will actuate the trim tab when a signal is applied thereto such as when the ship deviates from its pre-selected course. The trim tab can be released from the rudder so that it can be manually operated if so desired.

Abstract: This invention relates to a method of electroforming the epitrochoidal running track for the rotor of a rotary internal combustion engine. The method involves the electrodeposition of a sequence of plates on a mandrel of epitrochoidal shape and having a chromium surface, and casting an aluminum alloy housing onto the final plate. The sequence of plates applied to the mandrel with the chromium surface involving (1) a first plate of poor adherence selected from the group consisting essentially of nickel, cobalt, iron or their alloys, (2) a wear-resistant plate and (3) a final plate to aid in securing good adhesion of the aluminum housing cast thereon. These are the main steps. Intermediate steps may also be involved such as using two or more wear-resistant plates in step (2). Also step (1) with step (2) can be combined in one plating step.

Abstract: A process and bath for electropolishing and brightening aluminum and aluminum alloys. The bath preferably contains from about 30 percent to about 95 percent phosphoric acid and from about five percent to about 70 percent of a poly (alkylene ether). A minor amount, generally from about 0.05 to about two percent, of a wetting agent may be added to the bath if desired. The bath forms a protective foamy film over the part being electroplated, thereby protecting the part against chemical attack by the bath. Further, the polyether additives are chemically and thermally stable in the electrolyte under normal bath operating conditions. The bath may be operated at low voltages ranging from about 15 to 100 volts.

Abstract: Apparatus for treating cup-shaped workpieces in which the workpieces are positioned within a shape-conforming chamber formed with an outlet port in the base thereof and a conforming nozzle is positioned within the interior of the workpiece in close clearance-spaced relationship. The nozzle is provided with an axial port for discharging a high-pressure treating fluid against the central portion of the interior bottom surface of the workpiece, causing a high-speed radial outward flow therealong and thence axially outwardly along the interior wall surfaces of the workpiece. Upon reaching the open end of the workpiece, the direction of flow is reversed and is directed axially along the exterior wall surface of the workpiece, and upon passing the bottom edge thereof, the fluid is deflected in impinging relationship against the outer bottom surface, whereafter it is discharged through the outlet port and is recovered for reuse.

Abstract: Aluminum surfaces are cleaned at low temperature by the addition of a polyalkylene glycol-abietic acid surfactant and a polyalkylene glycol-hydrocarbon surfactant to an aqueous acidic solution. Preferably, the solution contains fluoride as an accelerator.

Abstract: The present invention is directed to a process and composition effective prior to the electroless plating of polymeric substrates to substantially completely remove hexavalent chromium ions present in the aqueous acidic solution utilized to etch the plastic part. This novel result is accomplished by treating the polymeric substrate with a hydroxylamine salt in an acidic solution which may contain hydrochloric acid, sulfuric acid or partially neutralized acidic salts. The process and composition of this invention may be employed as a neutralizer prior to the activating step or subsequent thereto as an accelerator, or at both locations in the process for maximum effectiveness.

Abstract: Disclosed is a composition and method for its use to improve the corrosion resistance of conversion-coated metal surfaces. The composition contains a myo-inositol phosphate ester or soluble salt thereof and is applied as a rinse of the conversion coating.

Abstract: A process and apparatus designed to recover metal ions from a solution in which the anode is in the form of a vortex diffuser. The vortex diffuser radiates an electrolyte solution upon an ion collector plate in such a manner that the fluid impinges upon the collector perpendicular and then turning parallel to its surface to thereby wipe away any tendency toward dendritic metal formation.

Abstract: The present invention concerns an installation for the delivery of liquids including a main control station, tanks, pumps, pipes, valves, etc., and fed from the latter, at least one delivery "pump" having flow-meter, hose, delivery-nozzle, display panel for showing volumes and prices and apparatus for recording, computing and displaying the quantities of liquids delivered and the amounts to be paid.

Abstract: Disclosed is an apparatus and method which permits a manufacturer to precisely place a desired image on a screen to be used in a screen printing process. This result is accomplished by establishing a predetermined relationship between the screen frame and the image positive from which the image is to be formed on the screen. The method requires providing indicia of translational and rotational orientation on the image positive and aligning the image positive with respect to the screen frame by adjusting the position of the image positive in light of the location of separately-provided reference indicia located in a predetermined position with respect to the screen frame. Aligning the image positive indicia with the reference indicia is most easily accomplished by providing a microscope through which respective pairs of indicia may be observed simultaneously. The disclosed apparatus provides a means for readily performing the above steps.

Abstract: An apparatus for effecting a counterflow liquid treatment of workpieces and particularly an aqueous rinsing of workpieces during an electrochemical treating sequence, such as, for example, an electroplating cycle or the like. The workpieces are subjected to a sequentially-phased treatment with a plurality of solutions while disposed at a treating station, and the individual treating liquids are collected and returned to their respective reservoirs, and the individual reservoirs are counterflowed in a direction opposite to the order of application of liquids to the workpieces.

Abstract: The instant invention is broadly directed to acid zinc electroplating baths and the use thereof wherein there is utilized water soluble polyglycidols and their derivatives which have been found useful in relatively small additive amounts to the plating solutions and accomplish marked improvements in the brightness of the cathode deposits and also increase the throwing power of the plating solutions.

Abstract: Disclosed is an aqueous plating bath suitable for obtaining electrodeposits of palladium and its alloys. The bath is substantially free of cyanide, nitrate and nitrite, and comprises sulfite ion, palladium in the form of a tetra-coordinated complex with palladium in the +2 oxidation state, an atomic ratio of halide to palladium not in excess of 10, and exhibits a pH of from 7 to 12.

Abstract: Disclosed is a stable organic phase coating composition useful for treating a metallic surface prior to non-cutting cold forming which contains from 0.5 to 10 weight % water, from 30 to 94 weight % of an organic lubricant and from 5 to 60 weight % of the reaction product obtained by reacting the salt of a multivalent metal cation, a polyphosphoric acid, and an alcohol of 10 to 36 carbon atoms in a weight ratio of metallic cation: P.sub.2 O.sub.5 equivalent: alcohol of 1:3-60: 14-150. A major advantage of using this composition to form the lubricant coating on the metallic surface is that the lubricating layer may be applied in a single step instead of by a two-step process as in the past.