Abstract: An aluminum piston is mounted onto a steel piston rod by means of an intervening, steel hub. The piston, hollow with an opening at one end, pilotingly receives the hub in the opening. The hub has a throughging bore in which the piston rod is pilotingly received. The rod has a prominent shoulder against which a rim on the hub seats, and a hub nut prestresses the hub against the shoulder. The hub has a flange with a series of bolt holes formed therein, the latter being aligned with a like series of tapped bores in a ledge of the piston. Studs with locknuts, engaged with the holes and bores, make the flange fast to the ledge.

Abstract: A valve seat and valve guard are coupled together, and form a chamber therebetween within which a valving plate moves. A stud secures the seat and guard together, and has a bore formed therewithin for receiving a headed piston. The piston has a projecting rod which engages the valving plate, and a pilot hole formed in the stud addresses a pressured fluid thereinto for moving the piston, causing the rod to move the plate laterally in the chamber. Apertures in the seat, guard and plate align, when pressured fluid enters the seat apertures, as the plate rises from the seat, and combines with the lateral movement to displace the plate diagonally in the chamber.

Abstract: The Assembly has a circular platform, which is threaded about its periphery, and has an upstanding stub about which to set a sleeve-type or cylindrical seal, as well as an arcuately cross-sectioned groove in circumscription of the base of the stub. A cup-shaped closure, having a circular wall, and threaded on the inner wall surface, threadedly engages the threaded periphery of the platform. Upon the platform and closure being threadedly engaged, the closure forces the seal along the stub until an inner end of the seal enters the groove and takes on a proper flare. The closure protects the seal from shipping damage.

Abstract: A dynamic earth anchor, which is forced from a tubular body, comprises a combination of a roof bolt and a tubular, deformable sleeve. The sleeve is insertable into a terrestrial borehole, at a closed end thereof, and then the bolt is inserted into the sleeve. This establishes an almost immediate restraint of the terrestrial formation in which the borehole is formed; the sleeve lockingly secures the bolt, and the bolt causes the sleeve to impress radial forces to the wall of the borehole. The sleeve of the anchor is defined by two edge portions to facilitate its insertion into the borehole, and to permit its slight opening to facilitate bolt entry thereinto the body has an interior and an exterior surface. The slit extends between the interior and exterior surfaces, tangentially intersecting with the interior surface. When the anchor is inserted, it is monitored in a substantially uniform cross sectional width regardless of minor diameter variations of the borehole, which cause sliding of the edge portions.

Abstract: A wobble piston apparatus incorporates a cup-type seal seated on a land formed about the head of the piston, and secured by an annular ring. The head of the piston and the ring have chamfered edges which facilitate an engagement of the ring with the piston head, on assembly, and the chamfered edge of the ring further cooperates with the piston to define a void which accommodates therein an extruded expansion of an innermost, peripheral edge of the seal.

Abstract: A waterjet cutting apparatus for limiting pressure spikes caused by hydraulic pressure surges. A hydraulic pump pressurizes hydraulic fluid used to operate the apparatus. An intensifier is driven by the pump. An on-off nozzle valve actuator is coupled to the pump and to the intensifier. First and second linkages are provided. The second linkage has a lost motion slot formed therein. An output control device is provided in the pump for controlling output from the pump and thus controlling the level of hydraulic fluid pressure admitted to the intensifier. A first control arm is coupled to the output control device and movable between a "MAX" and "MIN" position. An on-off nozzle actuator opens and closes the on-off nozzle valve remotely by way of the first linkage. A second control arm is coupled to the on-off nozzle valve actuator device and is movable between an "ON" and an "OFF" position.

Abstract: The sensor is formed with a polymer body which confines electrical conductors, with the conductors projecting from opposite ends of the body. The conductors' projections at one end define terminal blades, and at the opposite end are shrouded with, and electrically connected by, fusible material that is molded in place. An electrically inert buffer, formed of the same body polymer, is introduced between the conductors at the opposite end, and the fusible material is deposited about the ends and buffer as a cylindrical shell. A V-shaped notch is formed in the buffer for lockingly-engaging the shell. The body has wrenching flats formed thereabout and tapered pipe threads formed thereon to allow its installation in the wall of a pressure vessel, pipe, or housing, with the fusible-material end exposed therewithin.

Abstract: The Sensor is designed for use in detecting fire, or high temperature in vessels or pipes pressurized with air, gas or liquids. It has a polymer body which confines electrical conductors, and the conductors project from opposite ends of the body. The conductors' projections at one end define terminal blades, and at the opposite end are shrouded with, and electrically connected by, fusible material that has been molded in place. The body has wrenching flats thereabout and tapered pipe threads thereon to allow its installation in the wall of a pressure vessel, pipe, or housing, with the fusible-material end exposed therewithin.

Abstract: The crosshead has a body formed of solid, metal plate, and of substantially U-shape. It comprises a pair of spaced-apart parallel limbs which are bridged between by an integral transverse member, and the latter is bored through to receive a piston rod therein. Shoe plates are joined to the limbs to guide the body in reciprocation. In the combination with a connecting rod assembly and a piston rod, an end of the piston rod is directly fastened to the connecting rod assembly, and the crosshead is coupled to an intermediate portion of the piston rod.

Abstract: The valve, depicted as of the plate-type, has a ported valve seat, stop plate, and valving element (movable between the plate and seat) biased toward the seat by compression springs. Eight sets of compression springs are employed, in the disclosed embodiment, and each set comprises a pair of helical, counterwound (compression) springs concentrically nested together.

Abstract: The Assembly comprises a centrally-bored nozzle, a centrally-bored nozzle body, and a centrally-bored jet orifice element, the three being in substantially collinear alignment along a longitudinal axis. The nozzle body has a spherical-shaped socket in which is received a spherical-shaped body portion of the element. Further, the element has a straight shank portion, extending from the body portion, which projects into a void in the nozzle body subsisting between the element and the nozzle. Adjustment screws, in penetration of the nozzle body, are arrayed about the shank portion for manipulation to adjust the attitude of the shank portion relative to the longitudinal axis.

Abstract: In the arrangement, a gear housing rotatably journals juxtaposed ends of coacting lobed, male and female rotors on a horizontal plane, and a passageway confined in the housing, on a diagonal plane which tranverses the horizontal plane, conducts oil therethrough to rotor-end bearings from an oil-admittance port at an upper end of the passageway. The rotors, then, are below the port, at a lower end of the passageway and, accordingly, the gear housing-supplied oil is scavenged into the rotors. Further, the compressor has an airend which comprises the gear housing, the latter being of aluminum, die-cast formation, having parallel, side faces, with an oil filter mounting coupled to one of the faces. A drive gear, and a therewith meshing driven gear, are supported by the housing. The driven gear is drivingly coupled to the male rotor, substantially centrally in the housing, and the female rotor is journaled in the housing, as noted, outwardly (relative to the housing) from the driven gear and male rotor.

Abstract: The arrangement, in a first embodiment, comprises a cantilevered beam which is journalled at one end of a fixed shaft and journals another shaft on the opposite end. The fixed shaft, secured to the base of a machine, has a first sprocket integral therewith, the other shaft has a second sprocket integral therewith, and an endless chain is looped about and engaged with both sprockets. Also, the other, journalled, shaft carries a seat mount to which an operator's seat is joined. The arrangement accommodates for (a) a sluing of the seat, and (b) positioning of the seat in lateral dispositions in a same attitude, or orientation relative to the machine.

Abstract: The plunger of the high - pressure cylinder has a driving ram coupled at one end. The coupling includes an annular groove on the plunger end and a two - piece collar with inner ridge. A cup - shaped collar retainer and a snap ring retain the collar in the ram. The coupling eliminates bolting. The open cylinder end is shouldered and grooved to receive a sleeve, a multi - piece key, a seat, and a seal which assemble to receive, center, and seal the plunger in the high pressure cylinder. The seal assembly eliminates the need for a bolted cylinder end.

Abstract: The compressor has a crankcase which is horizontally separable and has piston cylinders removably coupled to opposite ends thereof. The crankcase confines a pair of tie-rod-joined crossheads therein, and guides control reciprocation of the crossheads in horizontal and vertical planes. Inlet and discharge valves are all accessibly fastened to the cylinders, and oil buffers and gas seals set about piston rods inhibit insinuation of oil into the cylinders, and gas into the crankcase.

Abstract: The method comprises a couple of features: (a) late closing of an air intake valve (for a cylinder) to induce a high-velocity, air injection just before closure, and (b) admitting fuel gas into the cylinder via the air intake valve. The valving arrangement comprises a valve and a seat therefore having mating surfaces which substantially effect an initial closure of the valve on the seat at only one side of the valve. As a consequence, a high-velocity jet of air streams into the associated cylinder, via the other, later-closing side of the valve, just before full valve closure. The high-velocity air injection, the same being a purposely-directed, swirl-generating, injection, according to the method or valving arrangement, induces an enhanced air-fuel admixing in the cylinder.

Abstract: The subassembly comprises a shaft having an eccentrically-weighted portion journalled in a tube which also has an eccentrically-weighted portion. The tube has an abutment therein which prevents full rotation of the tube relative to the shaft. With rotation of the tube in one direction, its abutment, at one side, comes into engagement with the eccentrically-weighted portion of the shaft and, consequently, both portions are in proximity and radially aligned to produce a maximum, oscillatory vibration. Tube rotation in the opposite direction causes the shaft portion to engage the other side of the abutment and, consequently, the portions are in opposite, radial dispositions, and produce a minimum, oscillatory vibration.

Abstract: In the embodiment depicted, the dynamometer is of an absorption type, for fluid, having fluid entries on both axial ends thereof, and a rotor having blades disposed, in a radial exit flow path, in parallel with the rotor axis. Adjustable, annular, blade shrouds, controlled simultaneously, expose more or less of the blade lengths to the radial exit fluid flow path.

Abstract: An air compressor having a pair of coacting rotors, useful as a supercharger for an engine, has a throttle plate in the compressed-air discharge port of its airend. The plate is carried by a shaft which is journalled in the airend housing. An air bypass channel is formed in the housing, The channel being in communication with the air-end air inlet. A pair of apertures formed in the housing open onto both the channel and the rotors, and flapper valves, pivotably mounted in the channel, monitor the apertures. Spring steel limbs, fixed to the throttle plate shaft engage and disengage the valves, to close and open the apertures, respectively, as the shaft is rotated to open and close the compressed-air discharge port, respectively again, by means of the throttle plate.

Abstract: The seal, for use especially in non-lubricated, high-pressure, as compressors, in a one-piece, continuous sleeve which envelopes a reciprocable piston for sealing against the piston, or against the cylinder in which the piston translates. One end of the sleeve effects the sealing engagement, and the other end is spring-loaded to maintain the engagement. During operation of the compressor, or the like, it is the high-pressure gas which urges the seal into sealing engagement.