Abstract: In a swing bridge for conversion of rotary motion of an eccentric driven by a motor shaft into a reciprocating movement of the power output for a tool in electrically powered appliances, consisting of a bridge yoke comprising the power output and mounted on two strip-shaped film hinges and a connecting rod coupled to the swing bridge and the eccentric, aligned parallel to the bridge yoke, one of the strip-shaped film hinges and the corresponding wall of the bridge yoke are each provided with an opening through which the connecting rod is guided in such fashion that the connecting rod head coupled with the eccentric lies outside the space defined by the bridge yoke and the film hinge and whereby the bridge yoke forms a rigid unit with the formed walls.

Abstract: A piston pump arrangement is provided which includes a drivable crank shaft supported in a crank drive housing for rotational movement. The crank shaft is drivingly connected to horizontally disposed axially reciprocating pump pistons. In order to facilitate driving of the crank shaft from either the right side or the left side to accommodate the available space requirements and driving motor connections, the crank drive housing is provided with fastening support surfaces arranged symmetrically with respect to a plane through the axis of the crank shaft and the axes of the pump pistons. To accommodate attachment of auxiliary aggregates, such as lubricating/cooling circuit mechanisms, fastening points for such aggregates are also arranged symmetrically with respect to the plane of the crank shaft axis and the pump pistons.

Abstract: Stapler mechanism drive unit utilizing a high-speed, low-inertia flywheel with a combination bellcrank and cam power-delivering arrangement for furnishing power to a stapler driver and clincher.

Abstract: A workpiece transfer bar is reciprocated by a rack driven by a pinion which is driven by a servomotor through an eccentric arm. A computer is used to set rates of acceleration and deceleration, a maximum speed, etc. in accordance with the origin of the transfer bar, stroke thereof etc.

Abstract: A piston and connecting rod assembly comprises a one-piece yoke thrust bearing disposed between the piston and connecting rod to provide bearing surfaces therebetween. The piston includes a pair of wrist pin bosses disposed therein and in spaced-apart facing relationship. The bosses have oppositely disposed faces with axially aligned bores therein, and the faces have disposed therein respective shoulder-like depressions. The yoke thrust bearing comprises a pair of washer portions in abutment against respective boss faces and interconnected by a yoke element, and the washer portions have respective projections conformably received in respective depressions, thereby aligning the holes in the washers with the bores and preventing rotation of the yoke thrust bearing in the piston. On end of the connecting rod is received between the washer portions, and a wrist pin is passed through the boss bores, washer portions, and the connecting rod opening to thereby pivotally connect the piston and connecting rod together.

Abstract: An improved linkage which is advantageously used in linking the crank of a Stirling machine to its coaxially reciprocating pistons. A swing lever having at least three spaced pivot axes is connected at one of its pivot axes to the machine housing and at a second pivot axes to one of the pistons. A bell crank, also having at least three pivot axes which are triangularly arranged, is rotatably connected at one of its pivot axes to the crank throw pin and pivotally connected at a second one of its pivot axes to the other piston. The bell crank is pivotally connected at its third pivot axis to the third pivot axis of the swing lever.

Abstract: A crankdrive mechanism for the two piston Stirling engine which greatly reduces engine size and weight without increasing complexity or decreasing mechanical efficiency. A single throw crankshaft is located between the cylinders and within the reciprocation limits of at least one of the pistons. An inverted triangular yoke connects the single crankpin with the two connecting rods, which are in turn connected with the respective pistons. A rocking lever connects the yoke with the engine housing and absorbs any side loads associated with the crankdrive mechanism. Extensive clearance provided between the cylinders and in the pistons permits the engine parts to be arranged in a very compact manner with ample running clearance.

Abstract: A Stirling engine has power transmitting connecting rods which slideably extend through diametral apertures in the pistons. A double-acting Stirling engine having center-actuated pistons eliminates the piston rods protruding through the end wall of the cylinders. The reciprocating piston motion is transmitted outside the cylinder by a piston rod extending transversely through the piston and cylinder wall to a connecting means journaled to receive the crank throw of a single crankshaft. The hot ends of the engine cylinders are all arranged about the central heat source, and the cool ends are all mechanically distant and thermally isolated from the heat source and crankcase, thus simplifying the cooling requirements of the engine.

Abstract: A hand held reciprocating mechanism for driving an abrasive tool for finishing dies and the like is disclosed. The reciprocating mechanism of the present invention includes a housing which supports a tool holding assembly, and a drive mechanism including a crank pin which reciprocates a connecting rod which is operatively coupled to the tool holding assembly. The tool holding assembly is supported for reciprocation by a support bushing which is supported by the housing. An internal retaining ring is employed to attach a tool support housing to the tool support bushing and allow rotation of the tool support housing relative to the tool support bushing. The retaining ring allows the use of an enlarged outer end for the tool support housing with a slot formed therein to slidingly support a pair of opposed flats formed on the tool holding assembly. This permits the tool holding assembly to support heavy transverse loads without excessive wear between the tool holding assembly and the tool support housing.

Abstract: This invention is best suited for counterbalancing a single reciprocating (recip) member (such as a piston). A con rod interconnects a rotary crankshaft to a recip member. Two main counterweights are attached to the crankshaft and rotate therewith. Two coaxial contraweights rotate in the opposite direction from the crankshaft and at the same RPM as the crankshaft. The two main counterweights plus the two contraweights combine forces so as to balance the primary recip inertia forces. Two secondary weights are mounted on two parallel countershafts and they rotate at twice crankshaft RPM and in opposite directions from each other so as to balance the secondary recip inertia forces.A positive toothed driving means (such as gearing) is used to drive the two said countershafts from the crankshaft. The same gearing plus the two said countershafts are also used to assist in driving the two said contraweights so as to minimize the total number of shafts, bearings, and gears.

Abstract: A valve actuator for a dosing pump for a paint toning machine, wherein the dosing pumps (3) are mounted in a sled movable with respect to the frame of the machine and a dosing mechanism (21-24) displacing the pistons (4) of the dosing pumps and an actuator rotating the valves (8) of the dosing pumps are mounted in the frame. The actuator comprises a crank (13) mounted rotatably in the frame and two cam rods (15, 16) which are mounted pivotally in the frame and of which one (15) is located in the path of movement of the crank and the other (16) is provided with a transfer mechanism (26) for transferring the cam rod optionally into and out of the path of movement of the crank.

Abstract: A triplex plunger pump for liquid cryogen service includes a power end frame comprising a casing formed of welded plate sections and elongated tubular members interconnected to form a main bearing support structure which minimizes the transmission of pump reaction forces to the casing outer walls. The power end frame is provided with removable guide sleeves for supporting respective cylindrical crossheads. The sleeves are retained in the power end frame in bores formed in spaced apart support plates. The crank or eccentric shaft is a multipart assembly including a cylindrical shaft having spaced apart splined sections which are interfittingly engaged with splines formed on removable eccentrics. The shaft main support bearings and the eccentric bearings are cylindrical roller bearing assemblies.

Abstract: In a balance device for a mechanical press, a press body or frame rotatably mounts a crankshaft. A slide is supported from the crankshaft by connecting rods so that it reciprocates transverse to the axial direction of the crankshaft as the shaft is rotated. To avoid the development of an oscillating effect in the press body during operation a first gear is positioned on the crankshaft. Balancing gears are supported on the press body in meshed engagement with the first gear. Each of the first gear and the balancing gears has a balance weight for counteracting the tendency of the slide to cause oscillation and vibrations in the press body.

Abstract: An internal combustion engine has a piston rack depending from each piston. This rack is connected to a power output shaft through a mechanical rectifier so that the power output shaft rotates in only one direction. A connecting rod is pivotally connected at one end to the rack and at the other end to the crank of a reduced function crankshaft so that the crankshaft rotates at the same angular velocity as the power output shaft and at the same frequency as the pistons. The crankshaft has a size, weight and shape sufficient to return the pistons back into the cylinders in position for the next power stroke.

Abstract: A reciprocating device which is composed of a base and a longitudinally movable member supported above the base on a support including rollers in engagement with the longitudinally extending member for guiding reciprocating movement of the member above the base and a motor connected through its drive shaft and wheels and gears to one end of the member for imparting cyclical or reciprocating movement to it above the base along a predetermined path defined by said rollers.

Abstract: An opposed-piston compressor has a rigid yoke which interconnects the pistons, and a drive comprising a crankshaft and balance weights within the yoke, enabling the shaft bearings to be placed close to the center line of the pistons.

Abstract: Multi-cylinder in-line and radial pumps having an improved structure for coupling the piston heads to the crankshaft such that the number of parts commonly employed and the size of the resulting pump is greatly reduced when compared to prior art pumps now on the market. Both in-line piston pumps and radial diaphragm pumps are included. The connecting rods comprise plates, each having a bore through the thickness dimension thereof for receiving a cylindrical lobe formed eccentrically on the pump's crankshaft. Formed on one end of each of the connecting rods is a generally cylindrical bore, also extending through the thickness dimension of the connecting rod, the center of this bore being displaced inwardly of the end edge surface of the connecting rod by a distance which is less than the radius of the bore.

Abstract: A connecting rod, especially useful as a piston rod, is bifurcated into two relatively moving components which permit the rod to elongate and contract under the influence of pressure which is selectively directed into one of two variable volume parts while being exhausted from the other. The fluid which is directed into and exhausted out of the variable volume chambers is controlled as a function of the angular displacement of the connecting rod relative to a driving shaft.

Abstract: A power transmission for engines, motors, pumps and the like comprises a power shaft mounted to rotate about a fixed axis, an eccentric in the form of a tapered bar having arcuate ends secured on the power shaft to turn therewith, a power transmission ring having a circular internal bearing surface contacting the arcuate ends of the eccentric, a plurality of cranks connected to the power transmission ring by crankpins, each crank having a crankshaft journaled to turn about a fixed axis which is parallel to the power shaft. Power may be applied to any of the crankshafts by a motor coupled to the crankshaft or power may be applied to any crankpin by a pitman connecting the piston of an internal combustion engine or fluid motor to the crankpin. In either case, the power applied imparts non-rotary, planetary motion to the power transmission ring to turn the eccentric about the axis of the power shaft, thereby rotating the power shaft at the same speed at which each of the cranks is rotated but with more torque.

Abstract: A static load is reciprocated vertically by a crankshaft connected to the load by a wrist pin at one end of a connecting rod. Bearings are interposed between the wrist pin and the load and also between the wrist pin and the connecting rod. The wrist pin is rotated about its central axis by a chain drive from the crankshaft.

Abstract: A mechanism is disclosed for driving the displacer of a crank-type Stirling engine at the same frequency but out of phase with the power piston of the engine. A biasing means is linked to the displacer for applying a biasing force which urges the displacer in one direction of its reciprocation. A flexible band is secured to the displacer for applying a force opposite to the biasing force. The other end of the band is secured to an anchor which is mounted on another part of the apparatus. The band extends slideably across at least one and preferably two bearing surfaces intermediate its secured ends.

Abstract: The piston metering pump has a motor operated eccentric which reciprocates a piston assembly. The piston assembly has two separate portions connected by spaced wire or rod members. One of said portions supports the piston and the other portion supports a coaxial stroke adjustment member.

Abstract: Central guide means for the piston rod of apparatus provided with a piston reciprocating in a cylinder and comprising a piston rod centrally journaled proximate its free end between two journaling points of a guide lever, the guide lever being essentially oriented in the axial direction of the cylinder and being journaled at two journaling points on a pair of connecting rods of equal length. Fixed pivoting shafts are disposed parallel to each other and spaced equidistantly on opposite sides of a longitudinal axis of the cylinder, the pivoting shafts being coupled to the connecting rods and separated relative to the longitudinal axis of the cylinder by a distance corresponding to the distance between the journaling points of the guide lever.

Abstract: A drive mechanism for advancing workpieces through a plurality of spaced-apart work stations which are arranged so that the distances between certain adjacent work stations are greater than the distances between other adjacent work stations. During an advancing stroke, the drive mechanism moves each workpiece from one work station the entire distance to the next work station so that no workpiece occupies any space between adjacent work stations after the completion of the advancing stroke. The drive mechanism includes a rotary drive crank to which a plurality of drive links are pivotally mounted. Each drive link is connected to a transfer bar which is guidably supported for straight line reciprocal movement to engage and advance the workpieces. A predetermined half-cycle movement of the drive crank imparts contemporaneous movement to the transfer bars which are moved through different distances during the half cycle movement of the drive crank to advance all workpieces to the next work stations.

Abstract: A powered device has a center of gravity and includes an engine comprising a block member, a crankshaft having opposite first and second end portions, and generally spaced supports on the block member for supporting the crankshaft for rotation with the first end portion extending toward the center of gravity and the second end portion extending beyond the supports. A piston is located in the block member for reciprocative movement, and a connecting rod has a first end portion pivotally connected with the piston and a rotationally balanced second end portion rotationally connected with the crankshaft intermediate the supports for converting the reciprocative movement of the piston into rotation of the crankshaft about its axis.

Abstract: For transferring a rotary drive to a movable member in order that the latter may be reciprocated with a variable amplitude stroke, a mechanism is disclosed which comprises two parallel shafts, each carrying an arm or a disc, a peripheral pin on each disc being pivoted to one end of a connecting rod, the opposite end of which is pivoted to the either end of a rocker. The central pivot of the rocker is borne by a member which is so guided that only a reciprocal motion is permitted thereto.

Abstract: Linkage mechanisms for industrial manipulators are disclosed which are based on so-called straight line mechanisms. The preferred straight line mechanism is of the conchoid type. The linkage mechanisms may be employed to move functional elements of industrial manipulators in straight lines without the use of lead screws or revolute jointed arms.

Abstract: A pump having first and second pumping chambers and a double-acting reciprocating piston which partly defines the pumping chambers. The piston is reciprocated by a rotatable drive member which may include an eccentric. The rotatable drive member has a peripheral surface which engages first and second wear members lying on opposite sides of the drive member. Each of the wear members is mounted on the piston for at least limited movement toward and away from the drive member. First and second resilient elements are positioned between the first wear member and the piston and the second wear member and the piston, respectively. The resilient elements resiliently support the wear members to provide a good driving connection between the drive member and the piston.

Abstract: A power transmission for engines, motors, pumps and the like comprises a power shaft mounted to rotate about a fixed axis, an eccentric in the form of a tapered bar having arcuate ends secured on the power shaft to turn therewith, a power transmission ring having a circular internal bearing surface contacting the arcuate ends of the eccentric, a plurality of cranks connected to the power transmission ring by crankpins, each crank having a crankshaft journaled to turn about a fixed axis which is parallel to the power shaft. Power may be applied to any of the crankshafts by a motor coupled to the crankshaft or power may be applied to any crankpin by a pitman connecting the piston of an internal combustion engine or fluid motor to the crankpin. In either case, the power applied imparts non-rotary, planetary motion to the power transmission ring to turn the eccentric about the axis of the power shaft, thereby rotating the power shaft at the same speed at which each of the cranks is rotated but with more torque.

Abstract: The invention relates to an adjustable stroke piston machine assembly wherein the stroke is adjustable steplessly from zero to full displacement. Two connecting rods are provided and a pivotal joint between the rods is guided by an arc shape path of a guide member. The guide member is pivotally adjustable to vary the position of the arc shaped path relative to the piston and thereby vary the stroke of the piston.

Abstract: A hand tool comprising two moving parts; a rotating and a reciprocating part. The reciprocating part, carrying a machining tool, is imparted its movement from the rotating part via a crank mechanism with variable excentricity for adjusting the reciprocating part's length of stroke. A crank pin in said mechanism is therefore excentrically disposed on a rotatable, lockable slide excentrically journalled in a rotatable holder which is imparted its rotary movement from the drive means of the hand tool. Counterweights in the slide and its holder together counterbalance the movements of the reciprocating part corresponding to the varying lengths of stroke. Upon setting of the crank mechanism to the desired length of stroke, the counterweights are arranged to either work in conjunction or in opposition and are therefore rotatable relative each other to an extent corresponding to the relative movements of the slide and slide holder.

Abstract: A crank assembly for coupling a plurality of connecting rods to a common crank pin of a crankshaft includes an articulation member journaled on the crank pin. The articulation member carries a plurality of knuckle pins arranged in a radial array about the crank pin. Auxiliary cranks interconnect the articulation member and the body of the machine to limit freedom of movement of the articulation member and to assure that it does not rotate in space as it moves with the crank pin in a circular path around the axis of the crankshaft. The described assembly is particularly useful with reciprocating piston machines of the type having a radial array of cylinders with pistons movable in the cylinders, and permits the use of identical connecting rods, each drivingly connecting a separate one of the knuckle pins and a separate one of the pistons. Moreover, each of the auxiliary cranks can be used either as an additional power transmission input or output for the system.

Abstract: A linear type of compressor wherein a housing section, for enclosing a crankshaft and pinions of a counterbalancing synchronizer, has axially extending support means for the pinions formed integrally therewith through an inner flange also integral with the housing section, so that the holes for the pinion shafts may be formed in the support means when the hole in the housing for the crankshaft is formed. This assures the making of all of the holes exactly parallel and avoids time-consuming assembly work, experienced in prior art compressor manufacturing, when the housing sections are put together. By providing a large opening through the upper portion of the support means or through the bottom of the housing an axial bore may be made to receive a piston type of crosshead.

Abstract: A shaker apparatus includes structure for effecting orbital motion in a beam member which forms a part of the apparatus. The beam includes two spaced apart points located at opposite ends of the beam. A set of resiliently flexible metal spring means in the form of a rectangle has two of its sides respectively connected to the two spaced apart points on the beam. The other two remaining sides of the rectangle are connected to two fixed supports. The relationship between the two fixed supports and the two points on the beam is such that an imaginary line joining the two points on the beam member is transverse to and intersected by an imaginary line joining the two fixed supports. The beam is driven by a flywheel and crank mechanism which in turn is driven by a synchronous motor or a pair of synchronous motors. A pair of rigid crossed wires may be employed to brace the opposite corners of the spring rectangular in order to prevent angular oscillation of the beam member during orbital motion.

Abstract: A mechanical link press comprising a bed, a pair of side frames extending upwardly from the both ends of said bed sandwiched therebetween, a crown sandwiched by said pair of side frames at the upper ends thereof, a slide adapted to move up and down guided by said pair of side frames, a pair of main drive shafts rotatably mounted to said pair of side frames respectively, and a pair of linkages arranged within said side frames for drivingly connecting said main drive shafts with said slide, said linkages being adapted to convert the rotational motion of said main drive shafts to a linear motion of said slide.

Abstract: The reciprocating slide of a mechanically driven press has a ball and socket type interconnection with the connecting rod of the press drive mechanism. The socket component of the interconnection provides a rotatable adjusting screw by which the shut height of the slide is adjustable, and a locking nut threadedly engages the adjusting screw and is rotatable relative thereto and to the slide to lock the adjusting screw against displacement relative to the slide during operation of the press.

Abstract: A balanced crankshaft mechanism for the two piston Stirling engine which permits the use of a single crankpin and eliminates side forces on the pistons. A triangular yoke has connected to its respective apexes the connecting rods for each piston and the crankpin. One end of a rocking lever is connected to said yoke at a point between the points at which the connecting rods are attached. The other end of said rocking lever is connected to the base of the machine. As the crankpin rotates, the separate connecting rods and their respective pistons are moved with a phase relation appropriate for a two piston Stirling engine, and side forces are absorbed by the rocking lever, rather than by the pistons. A simple means of balancing the reciprocating inertial forces is described, which is also applicable to other types of Stirling engines.

Abstract: A piston machine useful as a power generating machine or a working or pumping machine is disclosed. One or a plurality of double-acting pistons having eccentric piston shafts are guided in cylindrical combustion or working chambers of a machine housing. By means of a driving joint mechanism, the pistons translate along and pivot about their longitudinal axes in oscillatory movements to either drive or be driven by an output shaft.

Abstract: A vuilleumier-cycle refrigeration system of the type including first and second communicating, sealed, cylindrical, vessels having first and second displacers respectively mounted therein in sliding, sealing contact with the inner walls thereof, includes magnetic linkage between the two displacers for driving the displacers within the sealed vessels without contaminating the sealed vessels. With regard to the magnetic linkage, there are smaller, auxiliary cylindrical vessels coupled respectively to the first and second vessels, having smaller diameters, and thinner walls than the first and second vessels. Rods attached to the displacers and extending into the auxiliary vessels have magnetic material followers attached thereto. Magnetic-material drivers are moveable along the auxiliary vessels, opposite the followers, to thereby attract and move the magnetic-material followers and their attached displacers.

Abstract: The disclosure of the present invention relates to a torque and mass compensating counterweight system employed with the drive of a cold pilger rolling mill. The counterweight is connected directly to the crank by a sliding block, displaceable in a slot provided in the counterweight, in which the counterweight is arranged to reciprocate 90.degree. out of phase with the crank and is arranged in guides to move in a plane parallel to the direction of movement of the mill.

Abstract: An engine includes a block having at least one cylinder in which a piston reciprocates. The piston is connected through a piston connecting rod to a lever arm, and the lever arm is in turn connected to the eccentric crank pin of a crankshaft through a crank connecting rod. The lever arm is positioned and moved not only by the piston and crankshaft, but also by a positioning cam which bears against one end of the arm. The arrangement is such that throughout the entire power stroke the force transmitted to the crankshaft is applied through a relatively large moment arm, thus providing greater torque for the engine. The arrangement results in a relatively large angle between the crank connecting rod and the crank arm and permits greater eccentricity on the crank arm.

Abstract: A two-way linear actuator for changing a linear movement of a piston into a rotating movement of a shaft. The actuator is operated by some mechanical device generally comprising two cylinders, a piston movable inside the cylinders, a torque shaft at a right angle to the piston movement, and a machine element connecting the torque shaft to the piston located within the piston, and sealed from the interior of the cylinders.

Abstract: A piston and cylinder machine for use as a prime mover, pump or compressor in which there are at least two pairs of pistons and cylinders for each crankpin, the cylinders of each pair being disposed on opposite sides of the crankpin and rigidly connected to each other by a yoke. For each cylinder pair, there is rotatably and eccentrically mounted on the crankpin a disc rotatably received in a respective yoke and whose eccentricity relative to the crankpin is equal to that of the crankpin relative to the crankshaft whereby the piston stroke is twice the crankpin throw. The discs are integral with each other within their superimposed peripheries so that a short, stiff crankpin may be used, and they are out of phase by twice the angular separation of the pairs of cylinders.

Abstract: A crank mechanism for imparting reciprocal lineal movement to a member through forward and reverse strokes, and providing dwell periods for the member at each end of its stroke. The crank mechanism comprises a rotatable crank shaft for rotatably driving an eccentrically mounted crank pin which imparts reciprocal movement to a member via a connecting rod. A cam is provided for altering the throw between the axes of the crank pin and crank shaft at each end of the stroke of the member to provide dwell periods for the member in such positions.

Abstract: A machine, such as the compressor, having a housing formed in two sections. One section encloses a working unit while the second section encloses a driving unit for operating the working unit. A connector unit in the second section is operably connected by removable bearing means to the working unit and to the driving unit. The connector unit has pivoted bearings thereon that are slidable on mating removable bearings on the housing. A window is provided in the second section, through which window all of the bearing means in the second section may be removed without disturbing the working unit in its section. The pivoted bearings are of the so called Mitchell type but are of an improved construction. The bearing surfaces thereof have one or more transverse grooves therein that are symetrically arranged with respect to a plane passing through the pivot bore and perpendicular to the bearing's face. This construction tends to prevent digging in of the bearing when moving along the mating bearing.

Abstract: A sickle drive has a sway bar that is coupled with the sickle to reciprocate the latter during oscillation of the sway bar. The latter is operably coupled with a crank drive through a special linkage employing a pair of oppositely extending, short pitman links that compensate for one another adjacent opposite ends of the sickle stroke to vary the velocity of the sickle substantially sinusoidally. The oppositely directed inertia forces of the sickle adjacent opposite ends of its stroke, made equal by the special linkage, are balanced out by a pair of superimposed, oppositely rotating weights driven in timed relationship to reciprocation of the sickle, thereby presenting a substantially vibration-free drive.