Abstract: A method for repairing turbine engine seals and a product manufactured in accordance with the method are provided. A worn or damaged honeycomb seal is removed from a backing plate together with a portion of the surface of the plate. The plate is restored to substantially its original thickness by a low pressure plasma spraying operation which may be followed by further machining to arrive at the required plate thickness. A new seal is then brazed thereon. The finished product will include the backing plate, a low pressure plasma sprayed coated surface, and a honeycomb seal brazed to the coated surface.

Abstract: Coal-aqueous mixture having high solids content and excellent stability are provided by an improved process involving selective mixing and other conditions.

Abstract: In a somewhat standard system for releasing a parking brake of a wheeled motor vehicle of the type including a mechanical locking panel which coacts with a toothed sector for holding the parking brakes in the set condition, there is provided an improvement for automatically releasing the pawl from the sector when the transmission control mechanism of the vehicle is shifted from park or neutral into a driving condition. The improved device includes an elongated flexible element, such as a cable, extending from the brake releasing mechanism to the transmission control mechanism and a bell crank at the transmission control mechanism which coacts with a movable cam sector to effect the automatic release by pulling the flexible element.

Abstract: A process for the production of beneficiated coal and coal slurries having low ash, and sulfur involving admixing coal in an aqueous medium with a surface treating admixture comprising a polymerizable monomer, polymerization catalyst and a liquid organic carrier thereby rendering said coal highly hydrophobic and oleophilic. The resultant beneficiated coal product is formed into coal slurries, such as coal-oil mixtures.

Abstract: An improved process for the beneficiation of coal and the separation of impurities therefrom comprising subjecting coal to surface treatment by contact with an aqueous medium comprising polymerizable monomer, polymerization catalyst and liquid organic carrier, thereby rendering said coal hydrophobic and oleophilic, the improvement comprising the high shear intermixing of the surface treated coal with at least one water wash medium thereby providing for the removal of further hydrophilic impurities, such as mineral ash from the coal. Apparatus for carrying out the process and the products prepared therefrom are also provided.

Abstract: A process for the production of cement raw mix which takes into account variations which may occur in the raw materials being introduced into the raw mix, particularly such variations which occur in the limestone. The process disclosed involves the periodic adjustment in the estimated chemical composition of the raw materials used to produce the raw mix in response to the degree of divergence between the actual proportions (W.sub.i) of the raw materials mixed and the "theoretical" proportions (T.sub.i) which theoretically would have generated the raw mix that was produced over the previous time interval. Based upon the revised estimated chemical compositions, the desired characteristics of the raw mix over the next specific subsequent interval are reselected to adjust the overall chemical composition of the raw mix towards the overall desired characteristics, while maintaining continuity in the raw mix being produced and avoiding undesirable fluctuations in the composition.

Abstract: A titanium dioxide pigment is provided for use in polymeric compositions comprising a pyrogenic titanium dioxide pigment which has been treated with a composition comprising an organophosphate/alkanolamine addition product.This invention provides for a novel method for treating a pyrogenic titanium dioxide pigment in order to reduce yellowing when such pigment is incorporated into a polymeric composition comprising adding to such pigment a composition which comprises an organophosphate/alkanolamine addition product.

Abstract: Mine run coal is pulverized and the extended surfaces of the coal particles are rendered hydrophobic and oilophilic by a chemical bonding and graft polymerization reaction with a water insoluble organic polymerizable monomer under peroxidation influence in a predominantly water reaction medium.The mineral ash present in the coal and particularly the iron pyrites remains hydrophilic and is separated from the polymeric organic surface bonded coal product in a water washing step wherein the washed coal floats on and is recovered from the water phase and the ash is removed with the separated wash water in a critical wash step.Excess water is removed from the beneficiated hydrophobic surface-altered coal product mechanically. The hydrophobic and oilophilic organic polymeric surface bonded coating about the coal particles is fortified by inclusion of additional unbound free fatty acids by further small additions thereof.

Abstract: A device for applying a chevron-shaped cigar wrapper blank onto a rotating double cigar body as the body is being rotated in a mechanically driven nest where certain driving rods of the nest are modified to provide clearance for a tuck lifter that initiates the wrapping procedure.

Abstract: Mine run coal is pulverized and the extended surfaces of the coal particles are rendered hydrophobic and oilophilic by a chemical bonding and graft polymerization reaction with a water unsoluble organic polymerizable monomer under peroxidation influence in a predominantly water reaction medium.The mineral ash present in the coal and particularly the iron pyrites remains hydrophilic and is separated from the polymeric organic surface bonded coal product in a water washing step wherein the washed coal floats on and is recovered from the water phase and the ash is removed with the separated wash water in a critical wash step.The hydrophobic and oilophilic organic polymeric surface bonded coating about the coal particles is fortified by inclusion of additional unbound free fatty acids by further small additions thereof.

Abstract: In a programmable controller of the type including a microprocessor having output address terminals, output address lines extending to external addressable devices, input/output bi-directional data terminals and means for applying a binary status code made up of binary signals on the data terminals at a preselected time during a cycle of the microprocessor and indicative of the type of machine cycle to be processed by the microprocessor there is provided a system for energizing a hardwired logic circuit in response to a status code and logic on said address lines.

Abstract: There is provided a programmable controller comprising a standard microprocessor having output address terminals and input/output bi-directional data terminals and means for providing a binary code on the data terminals indicative of the status of the machine cycle to be processed by the microprocessor. This programmable controller includes a logic decoder means for producing a selected signal in response to logic signals on selected address terminals and in the status binary code of the data terminals. In addition, the programmable controller includes means for programming the HOLD state for the microprocessor. There is also provided an arrangement for expanding the number of interrupt conditions which can affect the INTERRUPT state of the microprocessor in the programmable controller.

Abstract: An automatic air deflation valve is provided for use with a sphygmomanometer type blood pressure measuring instrument. The valve comprises a housing having an air flow channel extending through the longitudinal extent thereof and at least one air deflation port extending outwardly from said channel. The port includes a deformable diaphragm supported only on its outer edges and having a central aperture extending through the thickness thereof. The diaphragm is adapted to deform in accordance with the air pressure applied against it from said channel to automatically adjust the size and shape of said aperture, thus producing a constant air deflation rate therethrough.

Abstract: A system for providing digital data representative of a selected analog signal on the data lines of a programmable controller using a central processing unit. The system employs a conversion circuit which converts the input analog signal to digital data on output data terminals upon receipt of a conversion signal simultaneously with an analog signal and which creates a completion signal when the conversion is completed. The system can use at least two analog inputs that receive at least two analog conditions and convert a selected one of the analog conditions to an analog signal. Upon actuation of one of the input modules, the selected analog signal of the selected module is directed to the conversion circuit. After conversion, the conversion completion signal of a conversion circuit then deactivates the actuated input module for the next conversion cycle.

Abstract: A method of preventing the deposition of an aluminum-based pack coating on a predetermined portion of a substrate is provided, said method including the principal step of applying a maskant composition to said predetermined portion prior to coating. The composition includes a reduceable metal oxide capable of reacting with and being reduced by said coating; an inhibitor for controlling the rate of reaction between the coating and the reduceable material; and a resinous binder vehicle in which the reduceable material and the inhibitor are suspended.

Abstract: There is provided a programmable controller comprising a standard microprocessor having output address terminals and input/output bi-directional data terminals and means for providing a binary code on the data terminals indicative of the status of the machine cycle to be processed by the microprocessor. This programmable controller includes a logic decoder means for producing a selected signal in response to logic signals on selected address terminals and in the status binary code of the data terminals. In addition, the programmable controller includes means for programming the HOLD state for the microprocessor. There is also provided an arrangement for expanding the number of interrupt conditions which can affect the INTERRUPT state of the microprocessor in the programmable controller.

Abstract: A limited visibility signal device is disclosed which includes a housing, a source of illumination within the housing, a light directing lens at the outer end of the housing, and a light collimating arrangement between the source of illumination and light directing lens to intensify and directionally control light delivered to the light directing lens. The light directing lens includes an inner side provided with parallel lenticular elements extending thereacross and having first outer surface portions parallel to the lens axis and second outer surface portions of circular contour. The light directing lens further includes an outer side provided with parallel adjacent lenticular elements extending thereacross perpendicular to the elements on the inner side of the lens and alternate ones of which are of convex and concave contour with respect to the lens axis.

Abstract: There is provided a method of making a compression die set of the type including front and back die pieces for compressively forming a sheet of soft, pliable metal, such as superplastic metal, therebetween with one of the die pieces including surface impressions. This method includes the steps of providing a mass of metal in a superplastic state, placing a sheet of the soft, pliable metal corresponding to the sheet to be formed over the one die piece to cover the surface impressions, heating the mass of superplastic metal to an elevated forming temperature, and forcing the mass toward the sheet and the one die piece until the sheet flows completely into the surface impressions.

Abstract: A digital device for detecting a metal object in the field of influence of a detector loop controlled by an oscillator which device creates a series of counting intervals and counts pulses during the intervals. The magnitude of the count during an interval is then indicative of metal detected by the loop. The count of a prior counting interval is stored and compared with the count of the next interval to determine whether or not there has been a detection. In this type of device there is provided an improvement wherein the magnitude of the counts stored during an interval is used to change the length of subsequent counting intervals. This maintains a generally high count magnitude for the counting interval to improve the sensitivity of the detecting device.

Abstract: A method of and composition for preventing the deposition of a coating on a predetermined portion of a substrate is provided, said method including the principle step of applying a maskant composition to said predetermined portion prior to coating. The composition includes a reduceable material capable of reacting with and being reduced by said coating; an inhibitor for controlling the reaction between the coating and the reduceable material; and a resinous binder vehicle in which the reduceable material and the inhibitor are suspended.