Abstract: A method of desulfurizing boiler flue gas by intimate contact thereof with dry particles of a reactant or absorbent, such as hydrated lime, preferably with recirculation of the flue gas and entrained reactant or absorbent particles. An apparatus suitable for carrying out the method comprises an upstanding conduit defining a vertical gas flow path in communication with a source of SO.sub.2 --and particulate-laden flue gas, a conveyor for introducing a dry reactant or absorbent into the gas flow path, and a rotatable slinger mounted within the gas flow path for uniformly distributing the reactant or absorbent thereacross.

Abstract: Colorimetric urea determination method and reagent in which urea in a liquid sample reacts with o-phthalaldehyde and chromotropic acid or one of its salts to produce an intensely colored reaction product whose concentration is linearly related to the concentration of urea in the sample and which follows Beer's law over a wide range of urea concentrations.

Abstract: A charge amplifier having minimum offset voltage such as for use in processing a signal from a capacitive transducer. The amplifier is arranged to minimize the offset voltage and drift. The amplifier is arranged to be reset to zero upon application of supply voltage thereto, and the resetting circuit is arranged to reset the amplifier automatically during an adjustable interval after application of the supply voltage. The charge amplifier is further compensated for temperature variation and is arranged at minimum offset voltage notwithstanding strong background noise.The amplifier is arranged to have a drift of no more than a fraction of a millivolt per second. The amplifier circuit includes an improved switching arrangement and may utilize a second amplifier circuit for effecting temperature compensation.

Abstract: A line reel includes a spool for line, a drive shaft effecting rotation of the spool through suitable gears and a manually operable crank hinged to the drive shaft. The drive shaft has a clutch part releasably engageable with a cooperating clutch part on one of the gears. A cam surface on the crank causes the crank, when pivoted to a selected locked or cranking position, to be moved to an over-center position at which a spring holds the crank in selected position. In locked position, the clutch parts are disengaged and the spool stops are engaged. In cranking position, the clutch parts are engaged and the stops are disengaged. The crank may be moved to disengage both the stops and the clutch parts so that the wound line may be manually extended from the spool without effecting rotation of the crank.

Abstract: A die structure for use in a laminated core manufacture wherein a plurality of apertured sheets are provided with projections formed from the portion of the sheet from which the apertures are formed to define an interlocked laminated stack. The first of the sheets is provided with a through aperture with the projection being eliminated so as to define a nonprojecting surface in the first of the sheets of the stack, with the projections of each of the subsequent sheets extending into and being interlocked with the preceding sheets in the aperture thereof. The punching apparatus for providing the apertures and projections is selectively operated to define either the formed aperture and projection structure or a blanked out apertured structure. The blanked out apertured structure defines the first of the sheets of the stack.

Abstract: A hydraulic assembly including a valve having a body (40), an elongated chamber (42) having a wall and a conduit (60) in the body, a valve spool (44) movable within the chamber, a drive (48) for the spool, an elongated sleeve (50) within the chamber and spaced from the wall thereof, the sleeve movably receiving the spool in a substantially fluid tight relation and having at least one port (52) for fluid flow with the flow through the port being controlled by the position of the spool within the sleeve, resilient washers (56) spacing the sleeve from the chamber wall and yieldably supporting the sleeve within the chamber, and yieldable fluid connections (64) extending between the port in the sleeve and the conduit in the body so that deflection in the body need not cause deflection of the sleeve so that binding tendencies between the spool and the sleeve are avoided.

Abstract: A mounting assembly (22) for an inside arm C-frame (18) of a bulldozer blade (26) is provided and includes a pair of brackets (30,30, 130,130) joined together by a tractor belly guard (32). Each bracket (30,30, 130,130) is pinned to the tractor frame (12) by a main pin (50) in the upper portion thereof and has a trunnion (52,152) at the lower portion thereof for connection to the arms (20,20) of the C-frame. The forward portions (60,162) of the brackets (30,130) are pinned (74) to the tractor frame (12) in a way as to constrain only that force known as torque or moment of rotational force, generated about said main pin (50). The belly guard (32) can be pivoted down out of the way for servicing the tractor.

Abstract: A tubular heat exchanger for liquids having a turbulator in a liquid flow tube offering low resistance to internal liquid flow. The liquid flow tube has an inside surface and transverse minor and major inner dimensions. The internal turbulator is elongated and comprises a heat conducting wire having successive, substantially canted undulations in contact with the tube's inner surface.

Abstract: A silverware dryer having a casing with ducts and nozzles for directing air to a drying chamber, a portable basket usable in a washing operation and thereafter positionable in said drying chamber and with the basket having a series of vibratory holders for silverware which are also mounted for rotational movement and motor-driven members for rotating and vibrating said holders.

Abstract: An ice receptacle support for use in a refrigeration apparatus, such as a freezer, wherein ice bodies are stored in an upwardly opening receptacle. The receptacle is removably carried on a support which is swingably mounted by a front pair of links and a rear pair of links so as to be gravity biased forwardly against a small access door carried in the main door of the freezer. When the small access door is opened, the receptacle swings forwardly as a result of the forward gravity biasing thereof by the supporting link arrangement so as to place the receptacle automatically in an ice access position. The links are arranged to provide a controlled limited force of the gravity biasing so as to effectively avoid undesirable opening of the freezer doors by the gravity biasing force. The front pair of links may be pivotally connected to a front upper portion of the receptacle carrier and the rear pair of links may be pivotally connected to a lower rear portion thereof.

Abstract: A stationery burster having substantially abutting, rotatably mounted, first and second infeed rolls, substantially abutting, rotatably mounted first and second outfeed rolls spaced from the infeed rolls along a path of stationery travel and a relief in the peripheral surface of the first infeed roll. A rotatable drive is provided for the second infeed and second outfeed rolls such that the peripheral speed of the second outfeed roll with be greater than that of the second infeed roll. The first rolls in each set are idler rolls. The spacing between the infeed and outfeed rolls may be adjusted to accommodate stationery of differing form lengths.

Abstract: A mobile apparatus (20) has a pivoted boom (22), and hydraulic cylinders (23a and 23b) flank the boom for moving it about its pivotal mounting (22a). Head end conduits (31a and 31b) and rod end conduits (33a and 33b) which connect the cylinders to a hydraulic pressure source are protected by guard means (35) including a unitary, rigid guard member (38) which is mounted upon the cylinders (23a and 23b) by mounting means (41) which affords limited movement of the guard member (38) relative to the cylinders (23a and 23b) in the plane of a central guard plate (39) and axially of mounting bolts (48).

Abstract: A method of and an apparatus for converting a first series of pulses into a second series of pulses having a frequency proportional to the frequency of the first series. The method and apparatus are particularly useful for providing a series of equally spaced pulses representative of the speed of a rotating gear in revolutions per minute (RPM). A proximity detector provides a pulse as each tooth of the gear traverses the face of the proximity detector and a sample period is formed by the passing of several teeth. A series of pulses is counted by a counter for the length of the sample period. The number of pulses at the end of the sample period is stored in a latch. A programed divider counts down from the count in the latch to zero at a reference frequency and an output pulse is provided each time the programed divider reaches zero. The programed divider is reset to the count in the latch upon the occurrence of each output pulse.

Abstract: A fire extinguishing system including a pressure vessel (10) adapted to contain under pressure a fire extinguishing material, an outlet (12, 14, 16) connected to the vessel and selectively operable to release extinguishing material therefrom, and a pressure sensing device (18) in fluid communication with the interior of the vessel. The invention contemplates the improvement wherein a temperature sensing device (26) is in proximity to the vessel for determining the temperature in the environment of the vessel and that the scale (24) of the pressure sensing device is scaled in temperature units. The temperature sensing device and the scale (24) are so correlated that a visual comparison of the two will indicate whether the vessel is properly charged at any of a set of widely fluctuating ambient temperatures.

Abstract: A novel olefin polymerization and copolymerization catalyst and method is provided wherein the catalyst is prepared by mixing an alkyl aluminum halide, a dialkyl magnesium compound and a reducible titanium compound of the formula Ti(OR).sub.n X.sub.4-n where R is an alkyl group, preferably of 1-6 carbon atoms, X is a halogen atom, and n is an integer between 0 and 4, inclusive, in the presence of a solvent and a particulate organic polymer whereby a reaction product is formed on the particles, and evaporating the solvent. The catalyst is active in the presence of an organometallic co-catalyst.

Abstract: A compact reversible variable speed clutch transmission and differential including a rotable input shaft having a drive gear (76), forward and reverse gears (88,84) engaged with the drive gear on opposite sides thereof, and a pair of selectively operable clutches each having an input (92) connected to an associated one of the forward and reverse gears and an output (94). The clutch outputs are connected to the inputs (110) of a variable speed nutating transmission (120) which includes a pair of independently rotatable outputs (116). The transmission includes a pair of nutating elements (130) each having a surface (132) which is a non-cylindrical surface of revolution. The elements are mounted for rotation by a mounting device (126,128) for rotation and there is included a pair of drive units (134) one for each nutating element, fixedly connecting thereto and to an associated one of the outputs.

Abstract: A push-pull coupling (18) for wheel supported power scrapers (10 and 14) has a coupling means (26) supported for cushioned fore-and-aft movement in a mounting frame (21) at the rear of a first power scraper (10) and a power operated bail (39) at the front of a second power scraper (14). The coupling means (26) has a rearwardly facing hook (37) against which a bight (39a) of the bail (39) may push, and a forwardly facing hook (38) against which the bight (39a) of the bail (39) may pull.

Abstract: An upper spray arm is mounted to the underside of the upper dish rack of a dishwasher and rotates in response to a jet of water supplied through the lower spray arm. The upper spray arm mounting is provided with a self-aligning bearing which includes a stationary mounting platform attached to the upper dish rack and a flanged, cylindrical bearing connected to the spray arm. An enlarged bore in the mounting platform accommodates the bearing cylinder and permits radial movement of the bearing cylinder relative to the platform. The bearing flange transmits thrust forces to the stationary platform and slides radially relative to the platform to the extent the platform bore is larger than the bearing cylinder. Impetus for radial movement of the bearing and spray arm is produced by a bell shaped receiver located on the underside of the spray arm.

Abstract: A control circuit for a refuse compactor having a compacting ram driven by a reversing electric motor for compacting refuse placed in a receptacle in the compactor. A tilt switch is associated with the receptacle and a control circuit for plug reversing the ram drive motor as a result of the tilt switch sensing a tilted condition of the receptacle during the compaction operation so as to return the ram to a retracted position as a result of such sensed tilted condition. The plug reversal operation is effected during novel utilization of the normal motor direction reversing switch of the control with the tilt switch being connected selectively in series with or in parallel with the reversing switch in different embodiments of the invention.

Abstract: An operator for a casement-type window having a sash mounted adjacent one edge thereof for combined pivoting and linear movement relative to a window frame with the operator having a member movably engaged with the sash adjacent an outer edge thereof for imparting opening and closing force to the sash. The operator includes linkage and gear structure connected to said member and operable in response to manual movement for moving said member in a path which closely approximates the movement of the sash outer edge to cause said member to always act adjacent the outer edge of the sash.