Abstract: A ferrous metal strip is continuously hot-dip coated by immersing the metal strip in a hot-dip coating bath containing between about 0.2 wt. percent and about 17 wt. percent aluminum, between about 0.02 wt. percent and about 0.15 wt. percent antimony while excluding lead in amounts more than 0.02 wt. percent, and the balance being essentially zinc. Smooth bright coatings are formed which are highly resistant to intergranular corrosion and blistering when exposed for an extended period to a hot humid atmosphere, have good formability in both the as coated state and after prolonged exposure to a hot humid atmosphere, have a markedly reduced susceptibility to the formation of white rust, and have a reduced rate of general surface corrosion without any diminution of the mechanical properties of the coating.

Abstract: A ferrous metal strip having a continuous hot-dip coating consisting essentially of the zinc-5% aluminum eutectic alloy which contains as the only metallic additive a metal which reduces the surface tension of the coated bath, such as lead, antimony or tin, with the total amount of the metallic additives being a maximum of about 0.1 wt. %, and said coating being formable and exhibiting good corrosion resistance when exposed to marine-type environments and having a bright, smooth surface free of ripples and spangles which interfere with paintability and weldability.

Abstract: This disclosure deals with a mount for a telescope, and particularly to a mechanism for moving the telescope at the sidereal rate. The mount includes a polar shaft and a sleeve for supporting the polar shaft, the sleeve being fixed in position and the polar shaft being rotatable in the sleeve. A declination shaft support member is secured to the polar shaft, and a declination shaft is rotatably mounted on the support member. To turn the polar shaft relative to the sleeve at the sidereal rate, two arms are provided, one arm being secured to and extending outwardly from the polar shaft and the other arm being secured to and extending outwardly from the sleeve but in a different direction. A motor driven adjusting mechanism connects the outer ends of the two arms and changes the angle between the two arms, and thus rotates the polar shaft, at about the sidereal rate.

Abstract: This disclosure deals with a variable fluid pressure regulator wherein the level at which the fluid pressure is regulated is adjustable. A member has a flow passage formed therein, and the fluid flows through the passage and out of the member, and a closure is positioned over the opening. The closure is yieldably mounted relative to the member and a spring urges the closure toward the opening. A recess or cavity is formed in the closure, and the fluid flows from the opening, into the recess, and then through a space between the closure and the member. The fluid pressure in the passage is a function of the spring force and the effective area of fluid pressure on the closure, and the effective area comprises the area of the opening plus any area of the recess which lies outside the margin of the opening. The regulated fluid pressure level may be varied by laterally shifting the closure relative to the opening in order to change the effective area.

Abstract: An amusement apparatus having a plurality of symbol displaying elements, such as rotatable reels, with some of said symbols on the display elements being "Win" symbols having potential score values and others being "Hold" symbols without score values and said display elements adapted to randomly index in a viewing area during a play cycle a combination of said symbols with or without other symbols or "Blanks" having no value, and control elements associated with the changeable symbol display elements which are adapted to modify the random indexing of the symbols by holding automatically in indexed position in the viewing area any "Win" symbols during the play cycle immediately following a play cycle in which the "Win" symbol and a "Hold" symbol have been simultaneously indexed in the viewing area of the apparatus so that a winning combination of symbols may be automatically built-up in a series of play cycles before all of the symbol display elements are again changed and randomly indexed.

Abstract: This disclosure deals with an air cooler and cleaner which receives compressed air coming from an air compressor and removes the moisture content, lubricant oil, solid particles and other contaminants which may be entrained in the air. The air cooler and cleaner includes a tubular metal housing, an upper housing closure and a lower housing closure. Sheet metal cooling fins having housing-receiving openings and cylindrical spacer and heat-conductor collars around said openings are heat shrunk onto the housing in firm thermally conductive contact therewith, the fins being in spaced relation to each other. A swirl chamber is provided in the lower portion of the housing and a cooling chamber is provided in the upper portion of the housing. The swirl chamber has a tangential air inlet for rapidly spinning the air therein. An inverted cylindrical cup-like air director is mounted within the cooling chamber for directing the air against and along the wall of the cooling chamber in a thin layer.

Abstract: A nickel-chromium based alloy comprised of nickel, chromium, molybdenum, cobalt, silicon and boron to which tin and indium is added as essential alloying elements to provide markedly improved fluidity, castability, workability and adhesion to porcelain with lighter oxide filed without impairing the strength and resistance of the alloy to deformation. The combination of properties makes the alloy particularly useful as a dental alloy for making bridges, crowns and inlays and for casting jewelry.

Abstract: Mechanism for retarding the speed of closure of the door of an automotive vehicle to prevent slamming and also to effect complete closure of the door after the same has been slowed. A hydraulic piston and cylinder cushioning device is utilized to slow the closure speed of the door to a predetermined low rate and a solenoid-actuated door closing device is utilized to effect a complete closing of the door after slowing by the cushioning device. The cushioning device may be mounted in the door of the vehicle and includes a plunger engageable with the door frame or body of the vehicle to decelerate the door during the last portion of movement thereof toward a closed position. The door closing device may also be mounted in the door of the vehicle and has a latch which coacts with a striker on the body of the vehicle to effect complete closure of the door.

Abstract: A ferrous metal strip is continuously hot-dip coated with a zinc-aluminum alloy by immersing the metal strip in a hot-dip coating bath containing between about 0.2 wt. percent and 17 wt. percent aluminum, between about 0.02 wt. percent and 0.15 wt. percent lead, and between about 0.03 wt. percent and about 0.15 wt. percent magnesium with the balance essentially zinc. In a further embodiment the hot-dip alloy coating can also contain between about 0.1 wt. % and 0.3 wt. % copper. The resulting hot-dip zinc-aluminum alloy coatings when applied to a ferrous metal strip exhibit good resistance to intergranular corrosion and blistering when exposed to a high humidity atmosphere and form smooth surface coatings which have good formability both in the "as coated" state and after prolonged storage in a high humidity atmosphere.

Abstract: A method and apparatus for assembling a block for a book or book section in a 2-up coming and going method of bookmaking by providing a stream of groups of book elements, each group containing all the primary pages of the book or book section. The groups of the stream are divided into first and second series and the groups of the first series are conveyed to a combining station around a turn-over member rotating about a horizontal axis so that each group of the first series is turned through 180.degree.. The groups of the second series are separately conveyed to the combining station and each group is arranged to be in half-block form before it reaches the combining station. At the combining station, the half-blocks of the series and the half-blocks of the second series are brought together in pairs by bringing each half-block of one series under a half-block of the other series to form blocks each comprising a half-block of the first series and a half-block of the second series.

Abstract: This disclosure deals with a hydraulic cushioning unit for a railway car, including a gas return. The unit includes a main reservoir which is precharged with a hydraulic oil and an inert gas. At least one reservoir extension is also provided at the upper side of the unit, the extension enabling the unit to be charged with relatively large amounts of oil and gas. The oil volume when the unit is in its neutral position is approximately 76 percent of the total reservoir volume, and the reduction in the gas volume during impact conditions is not more than approximately 40 percent. The unit includes a tube and two separate charging passages for precharging the unit to the desired oil and gas volumes.

Abstract: A method and apparatus for assembling a block for a double book or double book section in a 2-up coming and going method of bookmaking by providing a stream of groups of book elements each containing all the primary pages of the book or book section. The groups of the stream are conveyed along a rectilinear path towards a rotary turn-over member and alternate groups of the stream, which form a first series, are diverted from the path to pass around the turn-over member so as to be turned through 180.degree. about as axis parallel to the junction between the two pages on each leaf of group while the remaining groups, which form a second series are caused to continue along said path. The groups of the first and second series approach a combining station from opposite directions and are combined in pairs at the station.

Abstract: A continuous casting process and slab plate mold for casting an endless solidified steel shell enclosing a liquid core which is formed of spaced parallel longitudinal wall plates having held therebetween spaced inwardly tapered transverse wall plates provided with specially contoured inner surfaces comprising flat sections extending inwardly from each longitudinal edge disposed perpendicular to the longitudinal wall plates and having a length about equal to the thickness of the wide walls of the casting shell at the lower end of the mold with the inner ends of said flat sections being connected by a convex section whose curvature is such that the convex section is maintained in supporting contact with said casting as the casting is moved downwardly through said mold; whereby the pressure of the casting shell on the transverse wall plates is evenly distributed so that uneven wear is avoided and the working life of the transverse wall plate substantially extended.

Abstract: A hose coupling for detachably connecting one end of a cleaning tool hose to the suction inlet of a suction cleaner. The coupling includes a female coupling portion comprising a pair of circumferentially spaced, diametrically arranged flange portions on the margin of the suction inlet, and a male coupling portion comprising diametrically-spaced lug means on the end of the hose. The lug means are axially shiftable through recesses in the flange portions when the end of the hose is positioned for initial insertion into the inlet. After initial insertion, the end of the hose is rotated through a predetermined number of degrees to a locked, operative position in the inlet. A spring biased detent holds the end of the hose in its locked operative position, and a manually actuated push-button permits a user to disengage the detent from a receiving notch in one of the flange portions so that the end of the hose can be rotated to its initial insertion position and then withdrawn axially from the suction inlet.

Abstract: A pin ball-type game with at least one bingo-type matrix on which a winning combination can be formed during play having a matrix transformation means for changing the matrix arrangement to enable a player to obtain a winning combination of maximum score value, and having a score value altering means associated therewith which a player has the option of activating whenever a said winning combination is formed on said matrix in place of accepting the regular score value for the combination, with the score altering means adapted at random to either double the score value normally awarded for the particular winning combinaton or awarding no score for the winning combination.

Abstract: Hydrogen sulfide is removed from a gas stream by reaction with sulfur dioxide to form sulfur in the presence of an aqueous chelated iron solution as a catalyst or oxidation-reduction reagent. The reaction of hydrogen sulfide with sulfur dioxide is carried out in a first contacting zone, and the chelated iron solution is contacted with sulfur dioxide in a second contacting zone and then recycled to the first contacting zone. As applied to the treatment of a Claus process tail gas, the first contacting zone is interposed before the tail gas incinerator, and the second contacting zone is used to remove sulfur dioxide from the incinerator effluent gas.

Abstract: A dampening device supplying water or other ink repellent liquid to the printing plate of a lithographic offset rotary printing press, such device comprising a rotary cylinder, the wall of which comprises an inner coarse mesh element supporting an outer fine mesh element that picks up water from a trough into which it dips and from which the water is projected as a spray by means of air impinging on the interior surface of the cylinder at a delivery station from a series of nozzles or a tube having an axial slot, the fine mesh element having a mesh size that will ensure that each aperture is spanned by the liquid, and the coarse mesh element having apertures of a size such that they are not so spanned, and the space between the cylinder and the printing plate or transfer cylinder of the printing press being unobstructed in the circumferential direction.

Abstract: Hydrogen sulfide is removed from a gas stream in an oxidation-reduction system by contacting the gas stream with an aqueous chelated iron solution in which the iron is in the ferric state to absorb hydrogen sulfide and convert it to elemental sulfur. The solution is regenerated by aeration. A redox electrode is used to monitor the oxidation potential of the solution, and corrective action is taken, as required, to maintain the concentration of ferric iron in the solution so as to achieve efficient removal of hydrogen sulfide.

Abstract: This disclosure deals with a centripetal flow turbine housing including an intake opening for receiving a working fluid, a volute which conveys the fluid to a turbine wheel rotatably mounted within the housing, and an outlet opening co-axial with the wheel. A valve is provided adjacent the intake opening, and two intake passages are formed in the housing between the valve and the volute. One of the intake passages is arranged concentrically around the other intake passage, and the intake passages merge ahead of the volute to form generally concentric aspirating nozzles. The valve is adjustable to one position where it directs all of the working fluid through one intake passage, and to a second position where it directs the working fluid through both intake passages.

Abstract: A mounting means for supporting and positioning the elongated brush roll of a suction cleaner in the suction chamber or nozzle of the cleaner so that the brush roll may be rapidly and easily mounted in or removed from the suction chamber. Guide and bearing surfaces are defined on a plurality of bosses on the portion of each side wall of the cleaner base which defines the suction chamber, and the external surfaces on a hexagonal boss at each end of the brush roll coact with the guide surfaces on the bosses to guide the direction of movement of the brush roll during installation and removal thereof from the suction chamber and with the bearing surfaces on the bosses to locate the brush roll in its operating position in the suction chamber. The guide surfaces are inclined toward the rear of the cleaner base so that the brush roll is held in its operating position in the suction chamber solely by the tension of the brush roll drive belt.