Abstract: A hydraulic system having multiple actuators is provided with positive pressure flow equalization for both advancing and retracting movements of the system by means of first and second flow divider elements for each actuator. The flow divider elements are cross-coupled between the actuators, a controllable source of pressurized fluid and a reservoir. The flow divider elements are positive-displacement gear or vane pump units that are connected by a common shaft for coordinating fluid flow to the various actuators. Two or more of the actuators can be connected for lifting a load such as an automobile, the system being provided with safety latches at each actuator, the flow dividers not only coordinating the actuator movements during normal raising and lowering operation, but also preventing loss of synchronization of the actuators in case of engagement of a subset only of the latches.

Abstract: A folding machine in a rotary press of the type in which a printed a paper web is twice-folded and then cut into folded sheets by means of cutter drums, and the folded sheets are conveyed through a distributor section on the downstream side of the machine to a pair of ejectd paper sheet runners while being pinched by belts, is improved.

Abstract: An apparatus and method for improving moisture extraction from a steam turbine incorporates a collection slot adjacent a last rotating stage of the turbine with the collection slot being vented outside the turbine by bores through the turbine wall. Moisture removal is enhanced by the use of pumps connected to each of the bores for suctioning water from the collection slot. The pumps may be ejectors powered by subcooled water to minimize flashing potential. The suctioned moisture is returned to the system after passing to a condenser.

Abstract: Backing boards are delivered one at a time from a supply hopper to a stack of printed paper sheets at the stacking station outfeed end of a printing press while the outfeed of the next succeeding printed sheet is delayed for a time sufficient to allow the backing board to be delivered onto the stack. In one embodiment, the delay is achieved by stopping delivery of a blank sheet to the printing station of the press. In another embodiment, the delay is achieved by extending an arm into the path of gravity fall of the printed paper sheet toward the stack. A plurality of groups of printed sheets, each provided with a backing board, thus may be assembled in the stack. If the stack is to be bonded together with adhesive at one edge, a cutting line is installed at each backing board to facilitate cutting the adhesive layer to form a plurality of pads. The board inserting apparatus is supported on a vertically adjustable housing to adapt it to various types and sizes of commercial printing presses.

Abstract: In an axial-flow turbine consisting essentially of an outer casing, an inner casing with a preferably integrated vane carrier (5) and a rotor (3) fitted with rotor blades (6), the first stage is designed as a radial/axial stage. It is supplied with working medium from a toroidal or spiral inlet flow housing (4). The radial vanes (10) are provided at their two ends with root plates (14) by means of which they are bladed in annular recesses (15) in the blade carrier (5). The free end faces (19) of the root plates are of curved design.

Abstract: A hydraulic drive system has first and second flow control valves. Each of the control valves has a main valve of the seat valve type with a valve body for controlling communication between an inlet port and an outlet port which are both connected to a main circuit. Each further have a variable restrictor capable of changing an opening degree thereof in response to displacements of the valve body, and a back pressure chamber communcating with the inlet port through the variable restrictor and producing a control pressure to urge the valve body in the valve-closing direction. A pilot valve is connected to a pilot circuit which is connected between the back pressure chamber and the outlet port of the main valve; and an auxiliary valve is connected to the pilot circuit for controlling a differential pressure between the inlet pressure and the outlet pressure of the pilot valve.

Abstract: A rearwardly curved centrifugal blower having an annular envelope around the impeller, so that the rotating impeller draws air in through a central inlet and forces it radially outward into the envelope and out of an annular discharge. Multiple airfoil vanes are positioned in the annular envelope, in two axially displaced stages. The vanes are angled to turn and diffuse airflow entering the envelope.

Abstract: In a sorter-finisher with a sorting and stapling functions, the sheets ejected from a copying machine are transported and stored one by one into bins which are movable in the vertical direction along a guiding member, after taking out from each of the bins, the sheets are stapled by a stapling device. The guiding member, for preventing sheets on the bins from sliding down, have a first opening through which sheets ejected from the copying machine are fed onto one of the bins located opposite to the first opening and a second opening through which sheets held on one of the bins located opposite to the second opening are taken out. A first gate member provided at the first opening is movable from a closing position where the first gate member closes the first opening to an opening position where the first gate member is out of the first opening.

Abstract: A card webber is disclosed including two rotating conveyor belts carried by deflection rollers and two folding carriages movable between a first position and a second position. Variable velocity actuators are provided, a first velocity actuator associated with the belts and a second velocity actuator associated with the reversibly movable carriages. The velocity actuators are settable such that the velocity of the belts and the velocity of the folding carriages may be adjusted at different velocities with the velocity of the belts being different from the velocity of the carriages.

Abstract: In a booster casing (12) a movable wall (14) separates two compartments (16,18) from each other. In inoperative position, a control valve (20) connects the two compartments (16,18) with each other, and separates them when in an operative position, connecting one (16) of them to a source of pressure which differs from the pressure in the other compartment (18). A cylinder casing (52) is attached to the booster casing (12), projects into the same, and contains at least one pressure piston (54) which defines a pressure chamber (56) for pressurizing a brake circuit. An input piston (40) having a greater effective surface than the pressure piston (54) and defining an input chamber (42) is movable together with the movable wall (14). The input chamber (42) is adapted to be relieved of pressure by a relief valve (80) if the booster (10) fails. The input piston (40) and chamber (42) are arranged inside the booster casing (12), and the input piston (40) forms part of the movable wall (14).

Abstract: A vehicle steering for turning the steerable wheels of a vehicle having a fluid motor with a housing defining a fluid chamber and a piston in the chamber dividing the chamber into first and second chamber portions. A rotatable steering input member is supported by the housing. A rotatable follow-up member is associated with the piston and rotatable upon movement of the piston in the chamber. A valve controls pressurized fluid flow to the first and second chamber portions. The valve comprises first and second relatively movable valve parts. One of the valve parts is connected with the input member and the other of the valve parts is connected with the follow-up member forming a unit therewith. The unit has a surface against which fluid pressure in the first and second chamber portions acts tending to create an axial force on the unit. Pressure is applied to another surface area of the unit to balance the axial force acting on the unit.

Abstract: A piston member for an internal combustion engine of, for example, a motor bicycle is provided with bosses having inner end surfaces opposing to each other into which a piston pin is inserted. A connecting rod has small and large end portions and the small end portion is slidably coupled with the end surfaces when the connecting rod is inserted into the body of the piston member through a cutout portion formed at one end thereof to form a skirt portion. The sizes, dimensions, and structures of the end surfaces of the bosses, the cutout portion, and the associated elements are determined to be suitable for coating thin films of metallic particles on the end surfaces by flame coating means.

Abstract: A water pump device includes a pump housing within which is rotatably mounted a pump shaft having a rotor mounted thereon. An annular partition wall is mounted on the housing and extends into the housing so as to form a planar extension of the rotor. The rotor and partition wall define first and second substantially independent pump chambers in the housing. Two sets of impellers are mounted on the rotor, one set of the impellers extending into each of the chambers. Liquid inlet and discharge conduits communicate with each of the chambers so that a double pump is formed in the housing.

Abstract: A door operator having a fluid drive motor and a manual override. The bidirectional hydraulic motor connects to a drive shaft through a power train including a shiftable --quill--type manual clutch mechanism which allows an alternate connection of the drive shaft to a manually-operated wheel. When the cable which shifts the clutch for manual drive is pulled, a switch disables the control for the hydraulic motor. When the motor is not provided with pressured fluid from the pump a hydraulic brake engages the motor.

Abstract: A hydraulic braking system having an auxiliary piston disposed between an input piston and a presser piston, so as to define a first power chamber between the auxiliary and presser pistons, and a second power chamber between the input and auxiliary pistons. The presser piston cooperates with a housing to define a pressure chamber connected to a first braking arrangement. The first power chamber is connected to a second braking arrangement and supplied with a power pressure from an external hydraulic source through a control valve and the second power chamber. The system includes a connecting mechanism connecting the auxiliary and presser pistons such that the two pistons are normally placed in a spaced-apart state but are abuttable on each other.

Abstract: A family of airfoils for use in a high solidity factor blade having a leading edge portion and a trailing edge portion, a tip portion, and a root portion, has a plurality of airfoil sections. Each section has: one of any of a plurality of camber lines extending from the leading edge portion to the trailing edge portion, the camber lines being scalable relative to each other, each having the same relative shape, the camber lines having a minimal slope from the leading edge to about a 40% chord and an apogee at about a 74% chord; a scalable thickness ratio of between about 2% to about 7.5%; and, a maximum thickness position which is located from about a 37.5% chord for an airfoil at the tip portion of the blade to about a 35.0% chord for an airfoil at the root portion of the blade.

Abstract: An apparatus for forming an indicium in a stream of moving signatures, consisting of a signature displaced laterally from the stream and corresponding to a predetermined count of signatures, comprises an idler roller mechanism connected with a rotatable idler roller shaft and a series of vacuum heads located adjacent to and downstream of the idler roller mechanism. The vacuum heads are mounted to a vacuum head shaft laterally movable with respect to the signatures. A detector such as a laser detector coupled with a counter is used to actuate the system. When a predetermined count is reached as determined by the detector and counter, the idler roller shaft is caused to rotate to lower the idler roller and the signature corresponding to the count contacts the tops of each vacuum head. Simultaneously, a partial vacuum is formed in the recessed vacuum chamber of each head binding the targeted signature to the heads.

Abstract: A hydraulic cylinder having an internal groove in which is disposed a seal member peripherally engaging a seal-less reciprocable piston. In one form, the hydraulic cylinder is a master cylinder having a valved port in fluid communication with a source of fluid, opening and closing of the port being effected by a reciprocable plunger mounted on the end of the piston. An outlet port and a conduit places the chamber of the master cylinder in fluid communication with the chamber of the slave cylinder. In a slave cylinder version, a single port places the pressure chamber of the slave cylinder in communication with the master cylinder for introducing fluid and withdrawing fluid into and from the slave cylinder chamber, and thereby reciprocating the slave cylinder piston.

Abstract: The present invention relates to a reciprocating engine which has an improved reciprocating double ended piston which substantially reduces the size and weight of piston components. The double ended piston comprises a center portion between the two end portions. The center portion having at least one pair of racks located along the longitudinal axis either on the outside surface of a pair of flat surfaces or on opposed inside surfaces along a slot cut into the center portion. At least one crankless drive shaft having a gear or pair of gears mateable with the racks so that the crankless drive shaft (s) are continuously rotated.

Abstract: A method and device for mounting and centering a thin wall hub of a driven member onto a drive shaft provides the shaft with a radial end face which projects an axially extending reduced diameter threaded stud which fits within a central aperture of the hub and secures a nut to clamp the hub between the end face and nut. A raised shaft embracing portion centered on the hub axis snugly embraces the outer periphery of the drive shaft and axially aligns the two members. The drive shaft may also incorporate a drive pin which extends axially from the end face and is seated in a second aperture in the hub to provide effective driving of the hub by the drive shaft.