Abstract: A hydraulic adjusting system is provided for the continuous adjustment of the vibration amplitude of a rotating eccentric element. The hydraulic adjusting device includes a piston in a single acting cylinder. A piston connecting rod extends through the cylinder and is rigidly journalled axially inside the piston. One end of the rod is rigidly connected to a drive shaft of the eccentric element and the other end to a power source for rotatably driving the eccentric element. The system provides for continuous adjustment of amplitude vibration and, since the vibration amplitude is directly proportional to the hydraulic pressure acting on the piston, the system also facilitates setting and monitoring of such vibration amplitude.

Abstract: A finishing machine comprising a generally annular finishing chamber having a bottom and upstanding side walls, centrally located vibratory means comprising a substantially vertical shaft with major and minor eccentric weights at each end thereof, one of the eccentric weights at each end of the shaft being fixed, the other of the eccentric weights at each end of the shaft being moveable with respect to said shaft, means operatively associated with said moveable eccentric weights for effecting movement thereof within permissible limits, and limit means defining the permissible movement of the moveable eccentric weight at each end of the shaft, for respectively (a) increasing or decreasing the intensity of vibrations, or (b) reversing the direction of the force factor and hence the direction of flow of mass within the finishing chamber concurrently with an increase or decrease in the intensity of vibrations, depending upon whether the moveable eccentric weights are (a) two minor eccentric weights or two major e

Abstract: An elongate eccentric shaft formed from a cylindrical billet has cylindrical bearing sections at its opposite ends, a cylindrical center section, and cylindrical coupling sections outboard of and eccentric to the center section. The cylindrical sections are of uniform diameter, the bearing and center sections have coincident longitudinal axes, and the longitudinal axes of the coupling sections are coincident with one another and offset from the axes of the other sections. Adjacent each coupling section is an elliptical section having a major axis the length of which is no greater than the diameter of the cylindrical sections and a minor axis the length of which is less than that of the major axis by an amount corresponding to one-half the offset of the aforementioned longitudinal axes.

Abstract: The mechanism, designed especially for use in an earth compacting drum, comprises a pair of concentrically-arranged, eccentrically-weighted elements, which are rotated in unison by means of a hydraulic motor. The mechanism is housed within an earth compacting drum, and the one eccentrically-weighted element is translatable, axially, and disengageable from a splined coupling, in order that it may be indexed to different rotary positions relative to the other eccentrically-weighted element. In this manner, vibratory amplitudes may be increased or decreased.

Abstract: A vibrating finishing apparatus including an annular tub mounted upon a spring support is disclosed. A drive shaft extends upwardly through the center opening of the tub and is interconnected to the inner wall of the tub. A reversible motor selectively rotates the shaft in either of two directions. The shaft carries a lower eccentric weight and an upper eccentric weight assembly which are offset to create a vibratory movement. The upper weight assembly automatically shifts the angular offset between its center of gravity and that of the lower eccentric weight when the direction of shaft rotation is changed. The upper weight assembly includes a cylindrical housing with two internal baffles at an angle to one another defining a weight chamber partially filled with steel ball weights.

Abstract: A vibrating float for prefinishing concrete. The float includes a float member with a planar surface, an elongated handle for manipulating the float member over the concrete with its planar surface in contact with the surface of the concrete, and a pair of pneumatically driven vibrators. The vibrators are mounted on the upper surface of the float member on either side of the centrally attached handle and can be adjusted easily and quickly to vary the vibrational pattern of the float member for the most efficient and effective working of the particular concrete mix. Each vibrator has an exterior housing member with a rotatable mounted collar member within it. The collar member is cylindrical and end pieces are provided to confine a ball member within the collar member. The housing member has an air hole through it and the collar member has at least two air holes in it of different sizes.

Abstract: This invention pertains to induced vibrations and the dampening of these vibrations in the motor means. Vibrations induced by rotating a shaft having eccentric weights thereon have been used to produce all kinds of shaking apparatus including large car shakers in which the induced force may be much as eight thousand two hundred pounds. These vibrations may be as much as five thousand six hundred vibrations per minute and may be employed in hugh bins and hoppers in which the capacity is as great as one hundred fifty thousand pounds. Vibrators using air, electric or hydraulic motors can be tuned or adjusted to provide the desired results. Most of these vibrators using a tuned motor may be temporarily or permanently attached. Conventional motor driven vibrators, as far as is known, transmit the vibrational forces into the shaft of the motor. Said motors, which are usually conventional off-the-shelf units have their rotor bearings designed for rotary motion rather than combined with a vibratory force.

Abstract: This invention pertains to unidirectional vibration apparatus using resilient shock absorber mounting means to change multidirectional vibration into unidirectional vibration forces. Three embodiments pertain to the use of pressurized air for driving an eccentric weight at a desired speed. One embodiment employs a turbine which is carried between and by resilient disk members secured to mounting rings. A roller is driven by pressurized air and the vibrating apparatus is carried within and by a resilient ring. A ball vibrator also uses a resilient ring as a shock absorber.

Abstract: A material compacting vibration machine provided with an imbalanced system having coaxial first and second independently rotatable shafts carrying first and second drive elements and a pair of unbalanced masses having third and fourth drive elements secured thereto with driving connections between the first and third drive elements and between the second and fourth drive elements, and a drive shaft selectively coupled to the first and second drive elements, wherein the four drive elements all are disposed on one side of the imbalanced system and are shielded by a cover.

Abstract: An oscillator or vibration exciter for soil or road tampers or compacting devices. Unbalanced shafts are journalled parallel to each other in a common housing, and are driven in opposite directions by gears which mesh with each other and are installed on the unbalanced shafts. Each shaft supports a centrifugal weight rigidly coupled therewith. One gear is rigidly connected with its unbalanced shaft, while the other gear is rotatably arranged on its unbalanced shaft and is coupled therewith in such a way that it can be shifted in the direction of rotation by shift pins, which are anchored in a slide piece which can be axially shifted in this unbalanced shaft. The shift pins project outwardly through a longitudinal slot in the unbalanced shaft. This other rotatable gear, on both sides, has stop faces which extend nearly radially as well as axially, and point in the same rotational direction. A shift pin is provided on each side of this gear, one end of each shift pin projecting from the unbalanced shaft.

Abstract: This invention pertains to unidirectional vibration apparatus using resilient shock absorber mounting means to change multidirectional vibration into unidirectional vibration forces. Three embodiments pertain to the use of pressurized air for driving an eccentric weight at a desired speed. One embodiment employs a turbine which is carried between and by resilient disk members secured to mounting rings. A roller is driven by pressurized air and the vibrating apparatus is carried within and by a resilient ring. A ball vibrator also uses a resilient ring as a shock absorber. Two embodiments are shown with electric motors as a power source. In each embodiment the motor is carried by a ring mounted and secured to a resilient disk. One or more weights are carried on a shaft in axial alignment with the motor shaft.

Abstract: The invention relates to an eccentric element for generating oscillations in ground vibrators. The eccentric element comprises an eccentric mass (2) radially movable on a rotatable shaft (1). The mass is movable to assume a position displaced in relation to the centerline (15) of the shaft when the shaft (1) is rotated, thus causing the amplitude of the generated oscillation to be changed. To enable control of the amplitude, the eccentric mass (2) is lockable by means of a displaceable locking piston (9) arranged in a recess (16) in the rotating shaft (1). The locking piston (9) can thus assume a position entirely thrust-back into the recess (16), wherein the eccentric mass (2) is released, or a thrust-out position in which the locking piston fixes the eccentric mass (2) in one of its end positions.

Abstract: A vibratory roller includes a vibrator operably connected to a rotatable compacting roll. The vibrator is comprised of a rotatable shaft mounted co-axially to the roll and a casing mounted on the shaft and including a chamber and an eccentric mass within the chamber the mass being transversely displaceable in the chamber. Movement of the mass within the chamber provides a variable amplitude for the vibrations induced thereby. The movement of the mass is caused by centrifugal force which urges the mass radially outwardly against a fluid storage space radially outwards of the eccentric mass in the chamber, such chamber in turn communicates through a port with a portion of the chamber radially inwards of the eccentric mass. Fluid thus flows from the radially outwards storage space through the port to the radially inwards storage space and the eccentric mass moves radially outwards until the eccentric mass closes off the port.

Abstract: A shaft arrangement (34) having a transversely displaceable weight member (42) relative to the shaft arrangement's longitudinal axis (B). The shaft arrangement (34) includes a housing structure (36) within compression structure (44) is arranged. The compression structure (44) extends through the housing structure (36) and connects to the displaceable weight member (42). An elastomeric member (50) is captured between the compression structure (44) and the housing structure (36) so as to resist transverse displacement of the weight member and the connected compression structure (44). The elastomeric member (50) maintains the weight member (42) and connected compression structure (44) in a rotatably balanced position relative to the longitudinal axis (B) for rotation speeds less than a predetermined amount.

Abstract: The invention refers to a step adjustable monoaxial vibrator intended to be used on the vibrating rollers or similar machines.In order to adjust the peak value of the excitation at various levels, it has three rotary balls (rollers) rolling along the pendular frame rolling path while being driven by a dynamic balanced fork as a rotor.Across the rotor axle there is an obturating rod in order to locate the central ball either in the same compartment or in the opposite one versus the remaining two balls.This allows the steady frequency excitation to be set up either at the maximum peak value or at a value three times lower. By removing the central ball, a medium size excitation is obtained.

Abstract: An imbalance oscillation exciter having two imbalance weights arranged on each of two axially parallel or coaxial imbalance-weight carriers positively rotatably coupled with one another and rotating counter to each other or in the same direction. At least one of these imbalance-weight carriers comprises a shaft, whereby the imbalance-weight carriers are coupled with each other by a hub for continuous opposite rotation for the purpose of changing the phase position of the imbalance weights. A pin fixed on the shaft slidably engages in a hub groove. The pin is shiftable along a shaft slot extending at an incline to the hub groove by means of an adjustment member arranged coaxially in the shaft. The shaft has an axially parallel cylinder chamber open toward one of its end faces and in which the adjustment member is slidable with a piston extension sealed with respect thereto and facing the open side of the cylinder chamber.

Abstract: A vibratory mechanism comprises a motor-driven shaft, a first mass carried by the shaft for rotation therewith, and a variable mass supported for rotation relative to the shaft whereby the angular relationship between the first mass and the variable mass can be selectively adjusted to vary the amplitude of vibration. A drive member is rotatable with the shaft. The variable mass carries a plurality of longitudinally and circumferentially spaced abutment surfaces. The drive member carries a contact face. Engagement between the contact face and the abutment surfaces occurs at different angular relationships between the first mass and the variable mass to vary the amplitude of vibration.

Abstract: A vibratory compactor vehicle includes a roller drum provided with internal concentrically mounted eccentric weights which are rotated for imparting vibration to the drum. The weights are mounted upon concentric shafts of helical polygonal shape having mating, helically ribbed and grooved surfaces, whereby longitudinal movement of one of the shafts with respect to the other brings about relative rotation of the weights, thereby changing the amplitude of the resulting vibration.

Abstract: A vibratory compacting roller includes a rotatable compacting roll, and a motor driven vibrator. The vibrator includes a shaft, a movable mass rotatable with the shaft and adjustable transversely thereof, and a position regulator for regulating the position of the mass to provide for a variable amplitude of vibration, the amplitude of vibration of the vibrator being lowest when the center of gravity of the mass is nearest the shaft and greatest when the center of gravity of the mass is farthest from the shaft. The position regulator comprises a spring which automatically positions the eccentric mass to the low amplitude position when the shaft is at rest, whereby minimal start-up torque is imposed upon the motor. A releaseable locking mechanism locks the mass in the low-amplitude position.

Abstract: A vibratory screen apparatus is described for classifying loose solid material through horizontal screens 22-24 that are vibrated in elliptical paths by two independent eccentric weight means 28 and 30. The eccentric weight means 28 and 30 are mounted on the screen frame 15 elevationally below the center of gravity of the apparatus and upstream of the center of gravity toward the feed end. Each of the eccentric weight means include adjustable weights for adjusting the "throw" of the classifier that are outboard of bearings that support shafts that extend between the sides of the frame.

Abstract: A vibratory road roller has a drum adapted to be vibrated as it rolls along the ground, to this end the drum containing a vibrator device of the type which produces a vibratory effect as a result of rotation of an out-of-balance mass. The vibrator device comprises a casing, fixed to an end plate of the drum, and a rotor which has a fluid-containing cavity with the contained body of fluid contacting a swept internal annular surface of the casing. A piston movable radially in the rotor and/or the body of fluid provides the out-of-balance mass, and the vibratory force is transmitted to the casing and hence to the drum by the fluid pressure acting on the swept annular surface of the casing. The rotor structure itself is mechanically balanced so that substantially no vibratory force is transmitted through the rotor shaft and bearings.

Abstract: A mechanical vibrator assembly adapted to be attached to a device to be vibrated and wherein a shaft has a first weight system eccentrically fixed to the shaft, and a second axially displaced balancing weight system rotatable on the shaft. Stop surfaces limit rotation of the second weight system to approximately 180.degree., from a counterbalancing position substantially 180.degree. removed from the first weight system to a shaft vibrating position just short of circumferential alignment with the first weight system. A motor drives the shaft in a direction of rotation such that a slackening of speed removes the second weight system to the 180.degree. removed balanced position.

Abstract: A drive unit for vibrating machines such as shakers or vibrating screens includes a box structure enclosing a fixed shaft having an eccentrically positioned rotor thereon. The distance of the rotor from the shaft can be varied thereby varying the amount of throw. The box structure may be mounted either vertically or horizontally to effect either vertical or horizontal motion to the device to be vibrated. The position of the box can be varied between horizontal and vertical to provide a combined motion to the driven machine.

Abstract: A vibratory actuator (22) includes a housing (62), a rotatable shaft, (78) extending through the housing, and an eccentric member (80) to which the shaft is secured. Vibration is effected upon rotation of the eccentric member (80) by the shaft (78). A hydrodynamic fluid film gap is provided between a partial cylindrical journal surface of the eccentric member (80) and a full cylindrical bearing surface of the housing (62), and the housing contains hydrodynamic fluid. Radial loading between the housing (62), shaft (78) and eccentric member (80) is more uniformly distributed to reduce structural deflections and thus facilitate maintenance of the proper film of hydrodynamic fluid during operation of the actuator (22). If desired, the fluid can be circulated through the housing (62) for cooling purposes.

Abstract: An oscillator for reciprocating tools or other devices. Driving sprockets are mounted for rotation on a frame or in a housing and a pair of driven sprockets are mounted on the frame, each to be driven by a respective driving sprocket. The driven sprockets are outwardly of the driving sprockets, all sprockets having their axes in the same plane. Eccentrically mounted masses are on the shafts of the driven sprockets which when rotated generate forces on the axes of the driven sprockets. These forces are transmitted to the frame through shafts of the driven sprockets. A couple is generated about the axis of the driving sprocket causing the frame to oscillate. A tool attached to the lower end of the frame is thereby reciprocated.

Abstract: A rotary vibrator having a housing, a rotating shaft, and one or more eccentric weights having a hub portion mounted on the shaft and an eccentric portion extending outwardly from the hub generally perpendicular to the rotational axis. Each eccentric portion is defined by leading and trailing edges extending generally radially from the hub and connected to an outer periphery. Air inlet and outlet passages are arranged longitudinally in the housing at each end thereof for the purpose of admitting and circulating air in and around the bearings of the vibrator. The faces of the leading edges of the eccentric weights are beveled toward the outlet passages in a manner so that upon rotation of the vibrator, the leading edges will act like a propeller to draw air in through the inlet passages, circulate it through the housing and push it out through the outlet passages, thereby to ventilate and cool the vibrator bearings.

Abstract: A power take-off mechanism which converts rotational motion to a variety of available rotating, reciprocating and/or oscillating motions. The device comprises a rocking frame within which is mounted a rotating shaft on which is mounted an unbalanced weight. One end of the shaft is connected through a constant velocity type joint to a power source and the opposite end of the shaft rotates within a restraining ring or area on the frame. The rotating unbalanced weight transmits force through the shaft to the rocking frame which is free to pivot or move rotationally about one axis and at the same time to reciprocate axially along the same axis. Power may be taken off from various points on the frame as either reciprocating motion, reciprocating motion with a cyclicly reversing twist, circular motion inscribed on a plane of rotation, or eliptical motion inscribed on a plane of rotation.

Abstract: A vibration generator has a driven excitation shaft on which are fixed two axially-spaced first eccentric weights. A second eccentric weight positioned between the two first eccentric weights also rotates with the excitation shaft but is angularly adjustable thereon about the longitudinal axis of the shaft in order to adjust the vibration amplitude. Such adjustment employs a pawl mounted on one of said first eccentric weights for two-and-fro movement tangentially of a gear ring mounted on said second eccentric weight and with the toothed periphery of which the pawl engages. The second eccentric weight is lockable in adjusted position by a friction disc mounted on said one first eccentric weight and into frictional engagement with which the second eccentric weight is urged by a set of annular disc springs disposed in compression between the second eccentric weight and the other of said first eccentric weights.

Abstract: An orbiting mass oscillator for generating vibratory energy has an unbalanced rotor which is rotatably driven around the wall of a housing. Oil is fed to the housing with a longitudinal flow therein to provide a thick oil film between the rotor and the housing wall, thereby providing cushioning therebetween which dampens the effects of sharp jolting forces on the oscillator in situations such as where the oscillator is used to drive a drill or cutter against hard material or drives a transducer which is coupled to liquids. This damping or cushioning effect tends to prevent hard metal-to-metal contact between the rotor and the housing which would cause damage to these components. The oil film is efficiently driven ahead of the moving bearing surface by means of an inwardly curved leading edge on the rotor. This turned-in leading edge facilitates the movement of the rotor up on to the oil film which then separates the rotor from the housing and forms an effective cushion or dampener therebetween.

Abstract: A variable mechanical vibrator includes a first eccentric weight fixed to a rotatably mounted shaft. A second eccentric weight is rotatably mounted on the shaft, and the two weights are rotated together under control of mating engagement abutments, one carried by the shaft and one carried by or comprising a surface of the second eccentric weight. In one embodiment, first and second prime movers are used to rotate the shaft and the second eccentric weight, respectively; and when primary rotation of the shaft is effected by the first prime mover, the first and second eccentric weights are diametrically oppositely aligned with respect to one another on the shaft providing a balanced operation. In this mode of operation, the abutment carried by the shaft drives the abutment on the second weight to rotate such weight set with the shaft.

Abstract: A vibrating device having a mass rotated about a first shaft while the first shaft is rotated about a second shaft.

Abstract: An unbalance oscillation generator with constant direction of rotation, in which the resultant centrifugal force is variable due to unbalance on the unbalance shaft including two parts adjustable relative to each other and fixable relative to each other in at least two relative angularly spaced positions. The resultant of the two unbalance forces generated by the two parts varies in value in the individual fixable relative angle positions. A control pin displaceable by means of an adjusting rod extending through the unbalance shaft and projecting from the end face of the unbalance shaft either engages a circumferential groove facing the unbalance shaft but located in the axially non-displaceable part of the unbalance weight or engages a recess or cutout branching off from the circumferential groove. The control pin fits with slight play into the recess and is adapted to be arrested in either one of the respective pertaining axial positions.

Abstract: A hydraulically operated vibratory soil compactor adapted for use with a loading boom such as a backhoe. Improved construction includes a rectangular structural steel tube welded to a vibrating base plate for providing: structural reinforcement; a sealed housing for an eccentric weight vibrator; and, a supporting surface for shear type springs or shock mounts. A hydraulic drive motor is also mounted on the outside of the central tube member. Improved construction further includes an I-beam section welded between a pair of inverted U-shaped plates to form a tunnel type mounting frame having four arms for connection to the shock mounts supported on the tube member.

Abstract: An easily adjusted vibratory device useful, for example, on soil compacting vibratory rollers. One or more mass elements are supported eccentrically on a rotating shaft. The mass elements are pivotal about a pivotal axis or shaft perpendicular to the rotating shaft. Pivoting the mass elements during rotation of the shaft moves the center of gravity of the mass elements toward or away from the rotating shaft and thereby continuously alters the magnitude of the centrifugal force acting on the mass elements to cause vibration. The mass elements are formed, with respect to the pivotal shaft, to minimize the force necessary to pivot the elements by maintaining the moment arms from the axis of the pivotal shaft to the centrifugal force resultant at or near zero. In a specific embodiment the rotating shaft is cylindrical, the mass elements and pivotal shaft are supported within the rotating shaft.

Abstract: Two eccentric weights of a vibrator are mounted, respectively, on two coaxial shafts, one of which is a hollow shaft mounted on the other shaft. The two shafts can be connected for rotation in unison, and can be separated for relative rotation to alter the angular relationship between the weights. The mechanism is provided to alter the angular relationship between the weights while both shafts continue to rotate. An electric clutch is connected between the driven shaft and the hollow shaft to connect the two coaxial shafts for rotation in unison, and a brake is provided to slow the rotation of the hollow shaft after the clutch is disengaged. Thus, the angular relationship between the eccentric weights, and hence the stroke of the vibrator, can be changed.

Abstract: Vibrator devices, of the type which produce a vibratory effect as a result of rotation of an out-of-balance mass, comprise a casing and a rotor which has a fluid-containing cavity with the contained body of fluid contacting a swept annular surface of the casing. A piston movable radially in the rotor and/or the body of fluid provides the out-of-balance mass and the vibratory force is transmitted to the casing directly by the fluid pressure on the swept annular surface thereof. The rotor structure is mechanically balanced so that substantially no vibratory force is transmitted through the rotor shaft and bearings.

Abstract: A vibratory compactor includes a plate which is adapted to contact a substrate to be compacted, and a vibratory member which is mounted atop the plate for vibrating the same. The member includes imbalance elements mounted for rotation about an axis which is substantially parallel to the general plane of the plate. The imbalance elements are mounted for movement to and from a position which they assume once during each revolution. The compactor is further provided with a driving member for driving the imbalance elements in rotation.

Abstract: The device comprises a motor-rotatable unit which includes a rotary shaft having an eccentric mass and a shaft-enveloping sleeve--which sleeve also has an eccentric mass or eccentric weighted portion. The sleeve, which envelops the shaft, is movable in order to effect juxtaposed, radial alignment of the sleeve mass or weighted portion with the shaft eccentric mass, or a diametrically opposite disposition of the sleeve mass or weighted portion (relative to the shaft eccentric mass), so that the two masses effect an additive unbalance, or, eccentricity, cancel out eccentricity, or produce any in between value of eccentricity. Conduits formed in the shaft admit and discharge pressured fluid to and from the shaft and sleeve interface, to cause selective, rotary movement of the sleeve.

Abstract: This invention relates to a variable speed vibratory conveyor or feeder which comprises a material-carrying member mounted on isolation springs, and an exciter connected to the member by a spring system. The exciter carries a rotatably mounted eccentric weight for imparting vibrations to the material-carrying member, and a hydraulic control system is provided for varying the position of the eccentric weight relative to its axis of rotation in order to vary the amplitude of the vibrations imparted to the material-carrying member.

Abstract: According to the depicted embodiment, two eccentric-weight units are rotated into or out of radial alignment with each other to cause an increase or diminution of vibration. The units are journaled in a frame and a coupling assembly causes both to rotate in unison, but the assembly is also operative to rotationally index one of the weight units relative to the other to vary the noted radial-alignment relationship, as desired. One of the weight units comprises a pair of separate weights, each having an eccentric-throw portion, which are separated along the rotation axis and which are joined for common rotation by a resilient coupling. The latter coupling sustains and reactively absorbs any misalignments and/or displacements arising between the separate weights. The other weight unit is an elongate, eccentric shaft coaxial with the separate weights.

Abstract: Method and apparatus are provided for cleaning metallurgical vessels such as slag pots, ladles and the like by inducing vibration into such vessel from a housing clamped to said vessel and containing a vibratory means such as rotating eccentric weights.

Abstract: A housing is provided defining a central cavity and a rotor is journaled within the cavity and includes at least one piston bore formed therein extending generally radially of the axis of rotation of the rotor. The bore opens outwardly of the periphery of the rotor and a piston is reciprocal in the bore. The cavity defines at least one pair of approach and departure ramp surfaces extending thereabout in registry with which the outer end of the bore swings upon rotation of the rotor and the piston includes anti-friction thrust means on the end thereof remote from the axis of rotation of the rotor engageable with the ramp surfaces. Inlet and outlet means are provided and operative to admit fluid under pressure into the inner end of the bore and to exhaust fluid from the inner end of the bore in timed relation with rotation of the rotor as the thrust means swings into position engaged with the beginning of the departure and approach ramp surfaces, respectively.

Abstract: A brush is rigidly attached to one end of a housing having a handle at the other end and, between the ends, a cylindrical opening supporting a rotor whose center of mass is displaced laterally from the axis of rotation. As the rotor turns, it exerts an unbalanced centrifugal force on the housing, causing it to oscillate. The rotor is preferably a single metal roller gyrating or rotating about the axis of the cylindrical opening, and it may be rotated by a tangential stream of fluid, e.g., water at utility district pressure. The rotor body may be solid or a hollow member filled with a heavy liquid such as mercury, and it is so supported that during rotation its outer peripheral surface approaches but does not touch the borewall of the opening in which it operates.

Abstract: In an eccentric drive system including a rotatably mounted driven shaft, at least one primary eccentric mass fixed to the driven shaft for rotation therewith, an additional eccentric mass mounted for rotation with the shaft in a manner to permit periodic adjustment of the angular position of the additional mass relative to that of the primary mass, the shaft is provided with a shaft portion presenting an outer periphery which is arranged eccentrically to the axis of rotation of the shaft, the additional mass is mounted on the shaft portion to be angularly movable relative to that portion, and the system is further provided with a spring element connected between the additional mass and the shaft for producing a force about the axis of the shaft urging the additional mass into an initial angular position relative to the shaft, and with a fastening unit disposed between the shaft and the additional mass and actuatable between a released position in which it permits the additional mass to undergo angular displac

Abstract: A vibratory apparatus for the surface treatment of parts with media in which the apparatus includes a generator for inducing supplementary vibrations superimposed upon the basic vibrations, in which the generator is in the form of a free oscillatory means of a bowl housed within a race for circular movement about an axis parallel with the axis of the means inducing the basic vibrations.

Abstract: A vibratory plow suitable for laying flexible cable, pipe and the like underground. The vibratory plow assembly includes a frame which supports the assembly on a tractor, bulldozer or other vehicle, a vibrator and a plow. The vibrator includes a housing and a rotating eccentric weight assembly which imparts an oscillatory motion to the vibrator housing about a neutral axis having a varying and reversing moment. The vibrator is supported on the frame by resilient bearings in the neutral axis of the vibrator and the plow is supported on the vibrator housing spaced from the neutral axis to impart vertical vibration to the blade. The first embodiment includes a blade on each side of the neutral axis, such that the blades are vibrated in opposite directions to impart a shearing action. In the second embodiment, only one blade is utilized and a counterweight is supported on the vibrator housing to counterbalance the blade.

Abstract: A grab bucket for a grab dredger having a vibrator of waterproof construction mounted on the interior of a bucket shell for causing forced vibration of the grab bucket.

Abstract: A method and apparatus for separating entangled parts includes a receptacle container mounted for reciprocating movement in a vertical direction and having a grid structure at the bottom thereof for supporting and separating component parts which are entangled. In order to overcome the unbalance of the reciprocating container or parts bin a counterweight structure is provided which will effectively counteract or neutralize the unbalance created by the reciprocation of the parts bin. A drive motor through reduction means and connecting rod and crankshaft structure is appropriately connected to both the parts bin and the counterweight structure. The grid structure of the parts bin may be replaced with different size spacing grids for different size of parts to be untangled. The parts are untangled by the method of shaking them in a vertical direction and allowing the parts to be so vibrated that they tend to separate and become unentangled.

Abstract: A separator of the vibratory type comprising a box assembly of a plurality of planar pan screens resiliently suspended on a support base for vibratory motion thereon by resilient tension springs mounted between the box assembly and surrounding base truss members. The pan screens in the box assembly are formed of cylindrical sleeve frames and a circular screen having an elastomeric ring about its outer periphery with an external rim grooved to receive the lower edge of the superior sleeve frame. The pan screens are assembled into the box assembly by a plurality of tie rods disposed about the outer periphery of the box assembly to axially compress the assembly and screens into position and assure their support of material. The upper edge of each of the sleeve frames is deflected inwardly to telescopically receive the lower edge of the superior pan screen and effect radial deflection of the elastomeric ring of the superior pan screen when the assembly is compressed.

Abstract: A vibrator device, especially for connecting to a screen element for agitating the screen element, and including rotary shafts with off-center weights so oriented relatively that the agitation of the screen takes the form of vibratory movement thereof in one direction with a stronger impulse being imparted to the screen in one direction than in the other.