Abstract: A placement and orienting apparatus for a pump and water passing pipe assembly includes a wheeled trailer supporting the pump and water passing pipe assembly; an upper frame structure; a lower frame structure; a turntable bearing assembly positioned between and interconnecting the upper and lower frame assemblies and permitting rotation of the upper frame structure relative to the lower frame structure; a motor drivably connected to one of the upper frame structure, the lower frame structure and the turntable bearing assembly to rotate the upper frame structure and the trailer relative to the lower frame structure and the ground; and at least one upright hydraulic cylinder having a cylinder lower end connected to the upper frame structure and having a cylinder upper end connected to the trailer to drive the upper and lower frame assemblies downwardly together from the trailer so that the lower frame structure makes contact with the ground and elevates the trailer from the ground.

Abstract: The invention relates to an improved apparatus and method for assembling a battery. The invention includes an improved apparatus and method for sealing a battery case closure to a battery case. The apparatus comprises a device for moving a carrier with fluid pressure through fluid conduits disposed internal a shaft. A novel case stop is disclosed for stopping and positioning a battery case on a support. A method is disclosed for heating a battery case with a case heater. A conveyor system is included for sequentially moving a plurality of flat battery components such as case closures.

Abstract: A method to connect and disconnect a push-pull coupling in a push-pull assembly and a push-pull assembly for mounting a tool on a work machine. The tool comprises several attachment bushings for fitting of fulcrum pins into the bushings, by means of which the tool is attached to the work machine. The fulcrum pins are mounted on the work machine and are horizontally movable in opposite directions for insertion into and withdrawal from the attachment bushings.

Abstract: A hydraulically actuated locking element with two locking bolts axially displaceable on an axis. A carrying structure is provided with two, slidingly guided hydraulic cylinders, two cylinder bottoms, which act as locking bolts and are designed as force-transmitting cylinder bottom. A centrally fastened, common piston rod of the hydraulic cylinders is provided with a stationary piston at each piston rod end. A centrally rigidly connected piston rod fastening is arranged in the carrying structure and between the two, sliding hydraulic cylinders. The piston rod fastening and the piston rod are provided with holes for guiding hydraulic oil.

Abstract: A fluid power operated advancing unit has housing and a plunger adapted to run axially therein. The plunger is designed in the form of a three sided prismatic body at least along its length section running in the housing, said body being guided in the housing at its three side surface, whereas three transitions between respective adjacent side are not guided. The result is accordingly an extremely accurate guiding action for the plunger while simultaneously preventing rotation thereof.

Abstract: Disclosed is an improved hydraulic lift system comprising a cylinder housing preferably in the shape of a regular polygon which applies compressive force to a cylinder within the cylinder housing. This cylinder is preferably made from extruded plastic. Within the cylinder is a three ringed piston to which is attached a piston rod. The piston rod is adapted for connection to a horizontal cantilevered arm assembly.The improved lift permits cantilevered transport from specially designed handicapped chairs and stretchers for access to and egress from a pool or spa.

Abstract: A rotary actuator and a linear actuator are combined to provide an output shaft with independent linear and rotary motion. The linear actuator causes the rotary actuator to move linearly, and there is a guide which restricts the movement of the rotary actuator to linear motion and a bearing which receives the output shaft of the rotary actuator to prevent orbiting and deflection of the rotary output shaft.

Abstract: The compressor includes a cylindrical housing (1), in the bore of which moves a piston (3) whose periphery is adjusted with little play in the cylinder (1). The end (5) of the piston (3) includes a gas inlet (6) and supports two spherical joints (7) as well as connecting rods (8,8') which are symmetrical in relation to the axis of the piston (3). The connecting rods (8,8') pass with play through a transverse wall (11) of the housing (1) and are driven by a mechanical member (13), which includes a mobile component (14) having a rectilinear reciprocating movement, and by a compensator (15). The connecting rods (8,8') are connected to the compensator (15) by means of ball joints (16, 16') and the compensator (15) is connected by a ball sorbet joint (17) to the mobile component (14).

Abstract: A fluid actuated cylinder in combination with a container, the cylinder operating to lower an object into the container and to raise the object out of the container. The cylinder and container comprise a cylinder, a mounting assembly attached to the wall of the container for mounting the cylinder to the wall of the container. A cylinder a pivot bearing arrangement associated with the cylinder and the cylinder mounting assembly is provided for allowing the cylinder to move laterally in an orbital motion with respect to the cylinder mounting assembly when the cylinder is subjected to bending torques resulting from the lowering and raising of the object.

Abstract: A multi directional actuator capable of moving a shaft in at least two directions independently including one linear and one rotary movement. A base plate is provided to receive a first actuator having a linearly moving shaft which is extended from and retracted into the actuator. A second actuator is connected for movement by the first actuator and where the second actuator operates an output shaft which is selectively rotated through a portion of an arc. A guide arrangement is provided to direct movement of the second actuator by the first actuator and to journal the shaft of the second actuator to prevent orbiting and deflection of the shaft of the second actuator. Limit switches can be provided to indicate end of the stroke of the linear and rotary actuators and the first and second actuators can be separated to allow use of limit stops to limit rotation of the shaft of the second actuator.

Abstract: A linear hydraulic motor including a first piston rod (12) and piston head (16), a second piston rod (18) and piston head (26), and a cylinder housing (30), having a divider wall (46), adapted to reciprocate longitudinally on the piston heads (16, 26). The cylinder housing (30) has end members (34, 36) through which piston rods (12, 18) extend. Four fluid chambers (52, 54, 56, 58) are formed within the linear hydraulic motor. Fluid chambers (52, 56) communicate with each other through conduits (62), and fluid chambers (54, 58) communicate with each other through conduit (64). Piston rods (12, 18) include conduits (68, 70) for fluid communication with chambers (54, 56). A snubber (74) is provided in the divider wall (46) of the cylinder housing (30). The snubber (74) reciprocates within the divider wall (46) and is adapted to abut the inner ends of the piston rods (12, 18) as the divider wall (46) approaches piston heads (16, 26) during the reciprocating process.

Abstract: A power cylinder (10) has two pistons (12, 20) slidably mounted within separate cylinders (14, 22) to define inner and outer chambers (16, 18; 24, 26) within each cylinder. One or more rods (28) are coupled between the pistons. The outer chambers (18, 26) are coupled together to allow pressurized hydraulic or pneumatic fluid to flow therebetween. The inner chambers (16, 24) are coupled together to allow pressurized hydraulic or pneumatic fluid to flow therebetween. The fluid flow aforesaid may be achieved by using two hollow rods (128, 130) and allowing the fluid to flow through the rods between the respective chambers. A guard (44) may surround first and second cylinders (14, 22). Bearings (46, 48) may be fixed around the opposed inner ends of cylinders (14, 22) to allow slidable displacement of the cylinders relative to guard (44).

Abstract: A piston pump for conveying a fluid includes a cylinder which is not flanged to the pump casing, but rather is inserted in the pump casing and is retained in the longitudinal direction by a pretensioned spring. A seal is arranged between the cylinder jacket and the pump casing in order to seal the pressure side with respect to the suction side of the piston pump. An extremely compact piston pump results therefrom, suitable, in particular, for use in the low-temperature range due to very low cold losses.

Abstract: An indexing apparatus (10) having a pair of concentric cylinders (12, 14) with the outer concentric cylinder (12) being fixed against longitudinal movement and the inner cylinder (14) mounted for reciprocal movement relative to the fixed outer cylinder (12). A single ram piston (16) is mounted within the inner cylinder (14) and has a piston rod (18) connected to a member (29) for positioning at four predetermined positions. A shock absorber (24) is carried by the outer fixed cylinder (12) and engages stop plates or abutments (20, 28) carried by the inner cylinder (14) for activation of the shock absorber (24). A pair of guide rods (42) prevent rotational movement of inner cylinder (14) relative to the inner cylinder (12) and maintain the shock absorber (24) in axial alignment with the end abutments (20, 28). In one embodiment (FIGS.

Abstract: An apparatus (10) for providing rotary and linear motions, either simultaneously or separately. The apparatus (10) includes a rotary table assembly (14) that interconnects a rotary actuator assembly (12) and a power cylinder (18) or a comparable device. The rotary table assembly (14) includes a rotatable hub (16) to which the power cylinder (18) is mounted. Rotation of the hub (16) causes rotary motion of the entire power cylinder (18). Because of the interconnection between the rotary actuator assembly (12) and the power cylinder (18) using a rotary table assembly (14), a modular construction is provided whereby the power cylinder (18) can be positioned both vertically and laterally, depending upon the application or intended use of the apparatus (10). In one preferred embodiment, the rotary actuator assembly (12) converts linear movement to rotary motion using hydraulic oil to provide a smooth, adjustable control of the rotary shaft (32) of the rotary actuator assembly (12).

Abstract: A bendable actuator includes a tubular body made of an elastic material, a reinforcing braided structure surrounding the tubular body, and closure members closing both open ends of the tubular body and the reinforcing braided structure, respectively. At least one closure member is formed with a connecting aperture communicating with an internal space of the tubular body. A restraining device is provided at least partially between the closure members for partially restraining extension of the actuator in the axial direction. When the tubular body is supplied with a pressurized fluid, the actuator is extended in the axial direction while being curved at the same time.

Abstract: A pneumatic driver is disclosed. The pneumatic driver includes a frame and a shaft movable between an extended driving position and a retracted position relative to the frame. A first inflatable air bladder is supported by the frame. The first inflatable air bladder is operatively connected to the shaft so that when the first air bladder is inflated, the shaft is moved into an extended driving position. A second inflatable air bladder is supported by the frame and operatively connected to the shaft. When the second air bladder is inflated, the shaft is moved to a retracted position. A valve manifold operatively connects first and second air bladders for controlling inflation and deflation of the air bladders. The frame includes longitudinal guide rods and transverse frame members fixed to the guide rods. A shaft support member having the shaft mounted thereto is slidably mounted on the guiderods. Support rods are mounted to the shaft support member by bolts received in orifices to provide a clearance fit.

Abstract: A double-acting actuator includes a first tubular body made of an elastic material, a first reinforcing braided structure surrounding the first tubular body, a second tubular body made of an elastic material surrounding the first reinforcing braided structure to form a space outwardly thereof, and a second reinforcing braided structure surrounding the second tubular body. The actuator further includes closure members for closing and joining ends of the first and second tubular bodies and reinforcing braided structures, and guiding device for permitting axial movements of the first and second tubular bodies but restraining lateral movements thereof. The first and second reinforcing braided structures are so constructed that initial braided angles thereof permit of the first braided structure elongating and permit of the second braided structure contracting when the pressurized fluid is supplied into the first and second tubular bodies.

Abstract: An improved mounting for spaced band wheels about which the sealing bands of a band sealer move is achieved by mounting at least one of the band wheels carrying each band from a double ended cylinder movable longitudinally with respect to the inter-band wheel distance to thereby allow adjustability in the distance between the drive and idler band wheels and, in turn, modulate the tension in the band and with the shortest wheel distance allow easy removal and replacement of the band.

Abstract: A hydraulically or pneumatically actuated fluid-dynamic motor has an elongated elastomeric bladder, a braid disposed over the bladder, and a flexible but substantially incompressible spine disposed between the braid and the bladder. The muscle or motor is configured in a helix with the spine arranged on the inside of the helix. Application of fluid under pressure to the bladder causes one end of the helical motor to untwist or rotate relative to the other end. Upon deflation of the bladder, the spine causes the bladder to deflate and rotate the other end in the opposite direction. This fluid dynamic motor provides an azimuthal motion that can be employed for the steering section of an elongated flexible probe, such as a borescope or endoscope.

Abstract: A through hole rotating cylinder for controlling a workpiece gripping chuck associated with a rotary machine tool. The cylinder includes a cylinder body assembly, piston tube and fluid distributor section rotatable within a housing and defining a central axial opening. Bearings supported between the housing and cylinder body assembly are lubricated by flow from a hydraulic system used to move the piston tube in the cylinder body assembly. A coolant collector receives coolant liquid travelling through the central axial opening. A seal assembly between the coolant collector and the bearings prevents coolant from contaminating the hydraulic fluid in the hydraulic system.

Abstract: A plurality of piston heads (P1, P2, P3) are spaced apart along the length of a single piston rod (R). A separate traveling cylinder body (CB1, CB2, CB3) is associated with each piston head (P1, P2, P3). The traveling cylinders bodies (CB1, CB2, CB3) and the piston heads (P1, P2, P3) define first fluid chambers (1A, 2A, 3A) on a common side of the piston heads (P1, P3, P3) and a set of second fluid chambers (1B, 2B, 3B) on a common opposite side of the piston heads (P1, P2, P3). A separate fluid supply and return passageway is provided within the piston rod (R) for each of the working chambers (1A, 1B, 2A, 2B, 3A, 3B). Center members (C1, C2, C3) are secured within the hollow interior of the piston rod (R) and serve to divide the hollow interior into four axial sections (122, 124, 126, 128). The piston rod (R) includes first and second end members (RE1, RE2).

Abstract: A plurality of piston heads (14, 16, 18) are spaced apart along the length of a single piston rod (12). A travelling cylinder body (20, 22, 24) is associated with each piston head (14, 16, 18). The traveling cylinder bodies (20, 22, 24) and the piston heads (14, 16, 18) define a first fluid chamber (92, 100, 88) on a common first side of the piston heads (14, 16, 18) and a set of second fluid chambers (96, 104, 90) on a common opposite side of the piston heads (14, 16, 18). A separate fluid supply and return tube (94, 102, 82) is provided for each first fluid chamber (92, 100, 88). The tubes (94, 102, 82) extend through the hollow interior (42) of the piston rod (12). A space exists in the hollow interior (42) between and around the tubes (94, 102, 82). This space serves as a supply and return passageway for all three second fluid chamber (96, 104, 90). Passageways (98, 106, 80) extend from interior space (42) to each of the second fluid chambers (96, 104, 90).

Abstract: A blood pump, particularly intended as an extracorporeal blood pump, comprises a pump cylinder and two discs spaced apart in the longitudinal direction of the cylinder and substantially filling the cross-sectional area of the cylinder. The discs are reciprocatingly movable in accordance with a preferably variable movement pattern. Each of the discs is provided with a non-return valve means permitting fluid flow through the disc substantially solely in the desired direction of fluid transportation. The discs may be movable relative to the stationary pump cylinder surrounding the discs, or they may be firmly connected with the surrounding cylinder wall, which therewith accompanies the discs in their movements, the cylinder section between the discs having in this case a length which varies in response to the variation of the distance between the discs, and a correspondingly variable volume.

Abstract: A fluid actuated cylinder is provided having a piston and piston rod combination disposed in a tubular casing having a nose end and tail end. The piston is disposed on the piston rod spaced from both ends of the rod, the outer end extending through a bearing disposed at the nose end of the casing, and a unitary member which is employed to close the tail end of the casing is provided with a bearing for supporting the inner end of the piston rod.

Abstract: A compact master cylinder suitable, for example, for vehicle clutch or brake systems. An integral fluid reservoir body is connected to a piston stem extending to a piston head in the cylinder. The stem has a longitudinal passage connected to an orifice at the reservoir inlet. This orifice is valved by a valve closure member having a spherical head and an elastomeric cap. In the retracted state a stop secured to the cylinder limits movement of the piston out of the bore and the valve closure member opens to allow entry of make-up fluid from the reservoir.

Abstract: Disclosed is a fluid powered linear slide employing either a rodless or rod-type cylinder. The slide includes a base which has a movable carriage mounted thereon which moves reciprocably in response to pressurized fluid being fed to the cylinder. In the embodiment employing a rod-type cylinder, a pair of tubular rods are mounted on the base in a fixed position and attached to a piston stationarily mounted inside the cylinder which is movably mounted and attached to the carriage. In the other embodiment, the carriage is mounted on a bracket which is attached to the rodless cylinder carried in the housing for the cylinder. The base has linear guideways therein, each guideway carrying one or more stop members which are manually adjustable and electrically or fluidly actuated.

Abstract: In addition to a conventional steering system for steering a vehicle through the front wheels in accordance with an angular displacement of the steering wheel, the vehicle is equipped with a negative feedback steering control system which steers the vehicle through the front or rear wheels in accordance with an instantaneous yaw rate of the vehicle. The feedback system has a vehicle behavior sensor for sensing the yaw rate, and an control circuit which determines an actual quantity which is equal to the yaw rate or a linear combination of the yaw rate and the time derivative of the yaw rate and a reference quantity which is a function of the angular displacement and the vehicle speed, so designed as to be approximately equal to the yaw rate if there is no disturbance. The control circuit produces a feedback signal proportional to a difference between the actual quantity multiplied by a first coefficient and the reference quantity multipled by a second coefficient.

Abstract: A one moving part, bi-directional rotary displacement mechanism for conveying rotational movement about an axis to movable members in flight vehicles. In consists of an enclosure having bi-directional rotation capability, encapsulating a vane with bi-directional ducts venting from its load bearing surfaces. The vane is affixed to a bi-directionally ducted shaft, having bi-direcitonal rotation capability, extending through the center and outside of the enclosure. A conically shaped, sealed, positive stop, with load bearing surfaces, eminating from the inside radius of the housing, points toward the horizontal axis, supports the shaft and facilitates axial rotation. The vane has a radius concentric with the inside radius of the enclosure and allows sealed bi-directional rotary movement between the two surfaces. Two sealed cavities exist between the load bearing surfaces of the vane and the positive stop. Pressure to and from the cavities flows through the joined vane and shaft ducting.

Abstract: Disclosed is a fluid powered linear slide employing either a rodless or rod-type cylinder. The slide includes a base which has a movable carriage mounted thereon which moves reciprocably in response to pressurized fluid being fed to the cylinder. In the embodiment employing a rod-type cylinder, a pair of tubular rods are mounted on the base in a fixed position and attached to a piston stationarily mounted inside the cylinder which is movably mounted and attached to the carriage. In the other embodiment, the carriage is mounted on a bracket which is attached to the rodless cylinder carried in the housing for the cylinder. The base has linear guideways therein, each guideway carrying one or more stop membes which are manually adjustable and electrically actuated.

Abstract: A pumping arrangement includes an electric motor which has an output shaft having a shaft portion that projects out of the stator of the motor, a crankcase which surrounds the shaft portion and includes an outwardly projecting piston component that is stationary with respect to the motor stator, a cylinder component which is arranged around the piston component, an eccentric element which is mounted on the shaft portion for rotation therewith, an annular force-transmitting element which surrounds the eccentric element, and two connecting units which connect the cylinder component with the force-transmitting element at the opposite sides of the piston component and cause the cylinder component to perform a reciprocating and oscillating movement on the piston component as the force-transmitting element is moved eccentrically with respect to the longitudinal axis of the output shaft by the eccentric element.

Abstract: Disclosed herein is a slide cylinder basically consisting of a cylinder block internally defining a plural number of intercommunicating cylinder bores in parallel relation with each other, a piston and a piston rod fitted in each cylinder bore, and plate-like cross members integrally connecting the respective piston rods at the opposite ends thereof. The drive chambers defined by the pistons are communicated with fluid supply/discharge ports at the opposite ends of one of the piston rods and one of fluid supply/discharge ports provided in the cylinder block, permitting a diversity of piping modes by selective use of these ports. When installed upside down, it is possible to move either the cylinder block or cross plates whichever is desired. The slide cylinder can transfer loads accurately without involving rotational motion. Fixing of a piston against a piston rod is by means of caulking the ends of cylindrical portion of a piston at fixing grooves of a piston rod.

Abstract: A nitrogen die piston-cylinder unit has a central post threaded at one end into a nitrogen manifold. The piston has an axial bore therethrough. A sleeve closed at one end is telescoped over the free end of the post and is vertically slideable thereon. The upper end of the post has an annular seal thereon in sliding sealed engagement with the bore of the sleeve. A key and keyway formed on the inside of the sleeve and the outside of the post are arranged to interengage when the sleeve is fully telescoped over the post to prevent relative rotation therebetween. The exposed end face of the sleeve is formed with recesses adapted to be engaged by a spanner wrench to enable the unit to be removed from the threaded port of the manifold when the key is engaged with the keyway.

Abstract: A ram-type valve assembly for well blowout prevention applications and the like. Opposing ram assemblies disposed in ram guideways transverse to the valve bore are each provided with two pistons extending outward of the valve housing having internal passages communicating with respective passages internal of the housing terminating in respective closing and opening ports. A cylinder assembly with interconnected cylindrical chambers is slidably disposed about respective pistons. Pressurizing the closing or opening ports transmits pressure through the pistons to the chambers, effecting cylinder assembly movement along the pistons inward toward and outward from the bore, respectively. Each cylinder assembly is interconnected to its respective ram, transmitting cylinder movement to the ram. The hydraulic circuits are isolated from the bore preventing hydraulic circuit contamination and accidental ram opening from bore pressure leaks into the hydraulics.

Abstract: A device for reciprocating motion of a rotating drilling body of a drilling machine in the longitudinal direction of a hole drilled in rock or ground includes two cylinder-piston devices which via chains are connected to a carriage carrying the drilling body and which comprise parallel piston rods, the ends of which are supported by a frame on the machine, and cylinders movable along the piston rods and connected to each other and via the chains also to the carriage. To increase the feeding velocity of the carriage or to increase the force of the carriage one of the cylinders or both cylinders, respectively, are selectively fluid pressurized.

Abstract: In an electric furnace a lifting means actuating the furnace cover includes a king post supported on the base. The king post is surrounded by a sleeve, which is liftable and lowerable relative to the same and has a cap on its upper end. The sleeve is hydraulically liftable and engageable with a cover carrying framework carrying the furnace cover. In order to provide for a lifting means with a low weight without constraining forces and with a structurally simple lubrication, a cylinder space to which a hydraulic medium is admitted is provided between a front face of the king post and the cap of the sleeve acting in the lifting direction. If desired, an annular space is provided between a collar of the king post and the inner wall of the sleeve, to which a hydraulic medium is provided, acting in the lowering direction.

Abstract: Triple action piercing structure comprising an outer cylinder, an inner cylinder, a shaft and radially extending piston means operable between the inner and outer cylinders for providing a plurality of separate pressure chambers between the inner and outer cylinders, specific, simple and efficient passage means for passing a pressure medium into and exhausting the pressure medium from the pressure chambers to produce relative axial movement between the inner and outer cylinders at a particularly high pressure for cylinders of predetermined diameter to facilitate piercing of large diameter openings in thick hard workpieces.

Abstract: The jack includes conventionally a rod mounted in the cylinder and moved in translation with respect to the latter by any known means. This jack is characterized in that the rod is fast in rotation with a bearing in which it is slideably mounted if necessary in fluid-tight manner, said bearing being mounted in the cylinder head end or in an element fast to the latter. A rotation actuating device is provided to directly or indirectly rotate the bearing so that the rod can be driven at will with a translation movement or a rotation movement or with a combination of these two movements. The invention is particularly useful in automation.

Abstract: An extensible outrigger construction comprises a tubular housing secured to a vehicle frame, having an outrigger beam telescoped into it. The outrigger beam comprises upper and lower horizontal plates with semicircular cut-outs at their ends to receive the cylinder of the jack; a pair of vertical flange plates have surfaces on a diametral plane of the cut-out. A cap includes upper and lower horizontal plates with semi-circular cut-outs, and vertical flange plates engaging the first mentioned flange plates, the holding cap being secured by bolts through the flange plates. The jack cylinder has an upwardly facing shoulder that engages the bottom surfaces of the lower beam plate and the lower plate of the holding cap. The cylinder of the jack has a chamfer which seats in a corresponding chamfer of the top plates.

Abstract: A triple action welding gun for welding airport runway concrete reinforcing mesh or the like comprising an outer cylinder, an inner cylinder, a shaft and radially extending piston means operable between the inner and outer cylinders for providing a plurality of separate pressure chambers between the inner and outer cylinders, and means for passing into and exhausting from the pressure chambers a pressure medium to produce relative axial movement between the inner and outer cylinders wherein extension of the welding gun is accomplished at a particularly high pressure for cylinders of predetermined diameter to facilitate welding of large diameter reinforcing rods.

Abstract: An engine of the air-cooled, super-charged type which includes a stationary piston, a cylinder movable relative to the piston and operable in a first position to provide a compression chamber between adjoining ends of the cylinder and piston. In a second position, the compression chamber is opened to provide purging air flow from a compressor stage. A cooling air flow is provided about the surfaces of the cylinder and piston in both positions of the cylinder and during its travel between those positions.In a different embodiment of the engine, the internal combustion portion of the engine just described above is combined with a gas turbine stage. Upon firing of the fuel in the compression chamber and the subsequent opening of the chamber, the flow of hot gases is applied to provide a further rotative force to the turbine wheel.

Abstract: A power slide mechanism comprising a supporting frame, a moving frame mounted slidable on said supporting frame, double-acting fluid pressure device including a cylinder, a piston fitted slidably in the cylinder and a respective piston rod fixed to the piston at each end thereof and penetrating through the cylinder so that one end of each piston rod projects from respective end face of the cylinder, and a respective engaging and fastening device mounted at each end of the supporting frame and adapted to releasably engage the free end of a respective one of the piston rods.

Abstract: This is concerned with a crusher clearing system using a plurality of hydraulic jacks disposed with relation to the adjustment ring and main frame of the crusher such that the jacks, as a unit, apply a generally vertical thrust directly between the upper main frame flange and the adjustment ring so that uncrushable material may be removed from the crushing cavity in a stalled or jammed crusher.

Abstract: A two stroke mechanism is described which has rotary moveable piston and cylinder-piston elements. The piston and cylinder-piston elements both rotate within a stationary body forming two variable volume chambers. The first variable volume chamber formed between the piston and cylinder-piston elements may serve as a combustion or compression chamber. The second variable volume chamber formed around the piston and cylinder-piston elements and within the stationary body may serve as a precompression chamber. Methods for balancing, sealing, intake, discharge and cooling such mechanisms are disclosed. The mechanisms are especially useful as internal combustion primer movers, external combustion prime movers, pumps and compressors.

Abstract: An elongated, generally horizontal frame is provided with latch means at each end. An equipment mounting frame is mounted on the elongated frame for movement to selected positions therealong from adjacent one end to adjacent the other end of the elongated frame; a hydraulic cylinder is pivotally mounted on the equipment mounting frame, about a generally horizontal axis proceeding transversally. Piston rods extend in opposite axial directions from a piston slidingly received in the cylinder. Cooperating latch means are provided on the outer ends of the two piston rods. The equipment mounting frame is moved along the elongated frame by latching one piston rod end or the other in one of the latch means of the elongated frame and applying hydraulic fluid to the cylinder to relatively extend or retract the latched piston rod. Latching and unlatching are accomplished by temporarily tilting the cylinder from horizontal (e.g.

Abstract: A uniflow steam engine of the multi-cylinder type wherein the cylinders are rotatably mounted within a jacket having a sinusoidal cam track therein. Extending through slots, the ends of which are the exhaust ports in the cylinders and into the cam track are cam followers which are mounted on the pistons for reciprocable movement therewith. At the head end of the cylinders there are apertures which rotate with registered cutouts in superimposed valve rings that control the flow of steam from manifolds at the head ends of each of the cylinders into the cylinders as the cylinders rotate. By adjusting the relative position between the valve rings, the length of time of steam introduced on each cycle may be adjusted and by concomitantly rotating both valve rings, the initial time for introduction of steam may be adjusted to alter lead or reverse torque.

Abstract: An axially expandable and contractable cylinder and piston assembly is provided with an internal axially back and forth movable guide ring for the piston. Helical teeth or thread means at the outer periphery of the guide ring mesh with complementary helical teeth or thread means at the inner periphery of the piston, and helical teeth or thread means at the inner periphery of the guide ring are slanted oppositely to its outer helical teeth or thread means and mesh with complementary helical teeth or thread means on the cylinder.

Abstract: Power transmission apparatus for controlling the elevation of a gun barrel. Two telescopic members are provided, one being secured to the gun base and the other to the gun barrel. The first and second parts define a first piston and a hollow piston rod attached thereto with the first piston being slidable in a cylinder defined by the second part. A second piston having an associated rod is also provided and such second piston is slidable inside the first piston rod. First and second chambers are thus formed, the first being filled with an incompressible fluid such as hydraulic fluid and the second chamber is filled with a highly compressible fluid such as a gas.

Abstract: In a cylinder/piston aggregate wherein either the piston or the cylinder is solidly connected to a concentrically arranged shaft and rotating therewith while the respective other element is movable in circumferential and/or in axial direction relative to the first element, the bottom of the cylinder is elastically but tightly connected to the cylinder jacket. It is thereby ensured that in case of deflection of the rotating shaft to one side the inner cylinder wall can adjust itself to a substantially perpendicular position relative to the piston so that the sealing between the cylinder and the piston is not constantly pressed together on one side and relieved from this pressure on the other side.