Abstract: A multi-stage cement calcining plant suspension preheater has a calcining combustor flow connected with a cyclone separator in the uppermost stage and helical duct inertial separators in the remaining stages which are lower in height and in pressure drop than conventional cyclone separators and permit reduction in height of the preheater tower and use of a lower horsepower fan to move kiln-off gases through the preheater.

Abstract: A mounting arrangement for securing electrode plate assemblies in an electrostatic precipitator. The arrangement includes an adjustable, grid-like mounting frame adapted to be secured across the interior of the precipitator housing and a pin and slot attachment arrangement for releasably securing each of the plate assemblies to the frame.

Abstract: A pocket filter cartridge having a plurality of side-by-side filter bags secured to a filter header assembly adapted to be secured across a dirty gas stream in a gas duct. The header assembly includes a generally rectangular frame in which the filter bags are secured by collars mounted in the mouths of each of the bags which are held together by clip members to clamp the bags between the collars and the frame to secure the bags to the header assembly.

Abstract: A four part guard assembly for the rotating drive connection between a drive motor and a pump. The guard assembly being rigidly and removably secured to the frame of the pump and extending to a point short of the drive motor and encompassing the drive connection therebetween. The sleeve is of two part construction removably secured together to permit removal of one part for gaining access to the drive connection for field servicing maintaining the remaining components in assembled condition.

Abstract: The actuator shaft of a butterfly valve rotates 90 degrees to open or close an associated flow interrupter. As the shaft rotates its 90-degree motion is imparted to associated link members and the flow interrupters that are operably connected to the shaft. Thus, a drive link, secondary shaft and vane, as well as the support trunnions, are rotated simultaneously. This arrangement permits the seating of the seal on an axis which coincides with the axis of the actuator shaft and the sealing effected is bidirectional.

Abstract: A method for preparing a field which has crop residue rows for subsequent row crop planting comprises cutting a plurality of furrows between crop residue rows and lifting and turning over the soil from the furrows into ridges, and simultaneously scraping over a plurality of crop residue rows and transferring the residue into the furrows which are being simultaneously cut, and wherein the former step forms the ridges on surfaces that are simultaneously being cleared by the latter step. The method is accomplished by tillage apparatus including a horizontal frame, a plurality of furrow cutting moldboards affixed to the frame and being curved to lift and turn over the soil cut from the furrows into ridges, and a plurality of trash boards affixed to the frame diagonally to the crop rows and in alternate relation to the moldboards and being curved to transfer the crop residue removed thereby into the furrows being simultaneously cut by the moldboards.

Abstract: A variable speed plow bottom has a moldboard structure (37) pivotally connected to a fixed portion which includes a frog (14) and a share (17). The pivotable moldboard structure (37) includes an arm (53) whose forward end (52) is pivotally journaled on a vertical axis (49) in a socket (51) in the point (16) of the frog (14) forwardly of the moldboard (18). The moldboard structure (37) is selectively pivotable about the axis (49) by a hydraulic jack (28) between a low speed plowing position (FIG. 2) and a high speed plowing position (FIG. 3).

Abstract: A helical duct separator particularly suited for use in the suspension preheater of a cement calcining plant to separate raw cement meal from kiln-off gases in which the meal is suspended comprises a hollow elongated continuous duct having its longitudinal axis disposed along a downwardly inclined helical path, an inlet opening in a vertical plane for receiving a horizontal stream of gas with entrained meal, a downwardly inclined upper wall and a concave outer sidewall in the path of the gas stream to deflect the gas stream into a downwardly inclined helical path, a horizontal bottom wall adjacent the outlet end of the duct, a meal exit opening in the bottom wall and a gas exhaust opening in a horizontal plane in the upper wall adjacent the outlet end of the duct.

Abstract: Method for gasifying cellulosic material comprises feeding cellulosic material into the uphill end of an inclined rotary kiln; transporting a bed of cellulosic material through the kiln and continuously tumbling the bed; withdrawing fuel gas from the uphill end of the kiln so it flows countercurrent to the bed and removes moisture in the drying zone and thermally decompose volatiles in the devolatilization zone; admitting air overbed in the devolatilization zone and only underbed in the gasifying zone; and controlling the mass flow rate of air into the devolatilization and gasifying zones respectively as predetermined percentages of that rate of which is stoichiometric to the cellulosic material fed into the kiln to thereby limit temperature rise, prevent agglomeration and minimize entrainment of solid particles.

Abstract: A hydraulic turbine with water passageways and powerhouse for installation at a conventional spillway with gates includes a fabricated steel water passageway and cross beams which also serves as the lateral support between lifting devices which are operable to lift the installation to pass the upstream water discharge under flood conditions underneath the entire structure to reduce obstruction within the spillway.

Abstract: A belt idler pulley support arm (32) is mounted on a support wall by a pivot structure (48) whose position is determined by three individually adjustable mounting members (71, 72, 73). The mounting members (71, 72, 73) for the pivot structure (48) are accessible for adjustment from the side of the pivot structure remote from the support wall (46) and adjustments may be made while the belt (36) is running thereby allowing a very accurate alignment of the idler pulley (31) with the belt (36).

Abstract: A double acting hydraulic actuator for hydraulic clutches having a single piston for selectively actuating each of the hydraulic clutches. The hydraulic actuator includes a hydraulic cylinder in which a single piston is positioned which reciprocates to operate a hydraulic clutch in one direction and a second hydraulic clutch in the other direction.

Abstract: A trip mechanism 41 for a plow standard 11 includes a pair of toggle links 46, 61 having their remote ends pivotally connected, respectively, to a plow frame 15 and the standard 11. Link 61 includes a leaf spring 63 with a rolled end 86 pivotally connected to the link 46 by a pin 88 normally disposed in an overcenter position; however, when excessive working forces are encountered, the leaf spring 63 deflects somewhat in the manner of a cantilevered beam causing the pin 88 to move from its overcenter position to a tripped position thus allowing the plow standard 11 to swing upwardly about its pivot axis 16.

Abstract: The body structure 12 of a rear engine riding mower 11 is resiliently mounted on a main frame structure 13 by four cushion mounts 14. The engine 48 and steering shaft are mounted on the main frame structure 13 and the operator's seat 53 is supported on the body structure 12. Each of the mounts 14 is provided with a restrainer in the form of an inverted cup 69 which serves to stiffen the mount when the body structure 12 shifts horizontally (see FIG. 6) relative to the main frame structure 13 and when unusual vertical loading (see FIG. 7) is imposed on the mount.

Abstract: A park lock and range shift mechanism including a reciprocating and pivotal shaft operated by a shift lever. Reciprocal movement of the shaft operates the park lock while pivotal movement of the shaft operates the range shift of the transmission.

Abstract: A side mounted transmission shifting mechanism having a lever pivotally connected for reciprocating and pivoting a crank arm on the crankshaft to shift a vehicle transmission. The crank arm selectively engages one of a plurality of shift rails to selectively shift the transmission.

Abstract: Emission gas to be scrubbed of sulfur dioxide or the like has turbulent flow through a mixing vessel. At a mixing zone in the vessel, comminuted lime is fed into the gas and carried out of the vessel with the gas to a cyclone separator. A substantial portion of the dust from the cyclone is recycled back to the mixing zone of the mixing vessel. The gas from the cyclone is passed through a quench zone and excess dust from the cyclone is introduced into the gas stream for additional sulfur-dioxide removal, and quenching of the gas and dust from the cyclone is accomplished in a quenching zone prior to the gas being utilized in the system. Off-gas from the preheat zone which contains unburned combustibles is burned in a booster heater with the heat being utilized as process heat. Excess preheat off-gas not required for preheat process is delivered to a second combustion furnace for burning the combustibles therein and the heat utilized for drying.

Abstract: A positive locking mechanism on a shift coupler for a vehicle transmission. The locking mechanism includes a locking ring on the clutch collar. A sleeve is formed with radial openings for receiving balls which lock the clutch sleeve and clutch hub in the shifted position and retaining this position until manually released.

Abstract: An articulated plow is provided with a laterally swingable pull bar (31) and steerable intermediate support wheels (46, 47) which are controlled by a hydraulic system providing correlated movement through parallel connected hydraulic jacks (37, 66). A latch mechanism (86) for releasably securing the pull bar (31) in its plowing position of adjustment is operated by the pull bar control jack (37) through an operating lever (41) having a lost motion connection with a spring loaded latch pin (87). A locking plate (131) is provided to automatically lock the latch pin (87) in its retracted position when the pull bar (31) is moved to its transport position.

Abstract: A valve body is enlarged to contain the area of throttling vanes which are mounted on actuating shafts; the body is tapered along with the vanes to provide a loss of body area which is uniform to the throat section of the valve body; regulation of the vanes is accomplished by the shafts which extend outwardly of the valve body.