Abstract: An ornamental carousel assembly is disclosed which simulates the movements of a full-size carousel by supporting various carousel figures that both reciprocate vertically and revolve around a central vertical support column along with a canopy. The rotating and reciprocating ornaments are supported on a central support assembly by a bearing arrangement which minimizes the friction developed during movement of the ornamental elements so as to permit a miniature wind-up music box mechanism to drive the carousel. The drive assembly from the miniature wind-up music box mechanism includes a gear drive assembly for transferring drive from an output shaft of the miniature wind-up music box mechanism to rotate and reciprocate the various ornamental figures and a spring which is used to impart the necessary rotary drive force to the canopy.

Abstract: The ram of the reciprocating saw is driven by a scotch yoke mechanism. A planetary gear system consisting of a ring gear and an idler gear imparts an elliptical or linear path of movement to the pin forming part of the scotch yoke mechanism. The ring gear may be adjustably positioned for changing its relationship relative to the idler gear thereby varying the orientation of the elliptical or linear path of movement of the drive pin for varying the stroke of reciprocation of the ram which is connected to the saw blade holder. Actuation of the ring gear to its desired position automatically causes the foot plate of the saw to be located in its desired position for the selected stroke of movement.

Abstract: The invention relates to the driving mechanism of multi-action doll. The driving mechanism comprises an eccentric roller, a cross-shaped driving component and several driving gears. The cross-shaped driving component has a rectangular hole which accommodates the eccentric roller which moves the cross-shaped driving component back and forth in a linear direction when the roller rotates in the hole. The cross-shaped driving component has racks that mesh with and rotate the driving gears when the driving component is moved by the eccentric roller. Rotation of the gears also rotates shafts on the gears which convey motion to selected portions of a moveable doll.

Abstract: A motorized reciprocating tool unit releasably receives a saw, file or like tools and includes a counterweight unit to stabilize system operation. The is greater than a weight necessary to compensate for the forces created during the working action. A variable counterbalance weight unit may be used to create during the tool operation to compensate for the changes in the reactive loading characteristic. The variable compensation counterweight unit includes a counterweight which is slidably mounted and a pivoting lever moving the counterweight in an opposite direction from that of the tool holder and drive. In the variable unit, the tool holder is mounted for pivotal movement and is spring loaded to the standby position such that work reaction forces deflect the tool and holder resulting in a relocation of the lever coupling to the counterweight unit. The ratio of the length of the lever arm varies to change the stroke of the counterweight and the counterbalance forces.

Abstract: A Scotch yoke mechanism has a yoke frame with opposed parallel tracks engaged by rollers presented by a block assembly and is arranged to transmit power between a rotating crankshaft on a crankpin of which the block assembly is mounted and oppositely directed pistons mounted on the yoke frame, which moves linearly along a reciprocation axis. Two additional Scotch yoke mechanisms of the same type are presented by a cage surrounding the yoke frame and presenting two additional pistons opposing those of the first-mentioned Scotch yoke mechanism. The cage operates from two spaced apart crankpins which are aligned, and also moves linearly along the reciprocation axis.

Abstract: In the compact transmission of a hand-held reciprocating power saw, conversion of rotary to reciprocating motion is through a speed reducing bevel gear set (crown wheel and pinion) closely coupled by an eccentric drive pin in the crown wheel to a reciprocating saw blade carrier bar. A guide or bearing plate extending between the crown wheel and the saw blade carrier bar does double duty, guiding and supporting the saw blade carrier bar on one side and, on its opposite side, providing a thrust surface for the crown wheel. The crown wheel engages the guide plate through a thrust ring about equal in diameter to the diameter of the crown wheel. In this way, the shallow crown wheel may be positioned, supported and stabilized entirely by two simple bearings--a large diameter plain thrust bearing of essentially no radial capacity and a short radial bearing subject to virtually no bending or thrust loads.

Abstract: The motor drives the crown gear which has an upwardly projecting eccentric drive pin which drivingly engages the channel fixed on the spindle which reciprocates in the fixed tube and supports a saw blade. The induced vibration is counterbalanced by the reciprocating counterbalance which slides on the outside of the tube. The crown gear has a cylindrical drive member which engages the cylindrical hole in the transfer block. The transfer block is moved in an orbital path and the opposed parallel sides engage and reciprocate the counterweight. The crown gear and cylindrical drive member have material removed to counterbalance the two drives.

Abstract: A motion translation device uses a slotted head similar to that used in scotch yoke devices in which tracks are provided at opposite sides of the slot, but laterally offsets the tracks relative to one another and uses two coaxial rollers, each engaging only a respective one of the tracks. The rollers are journaled on a rotating member in offset relation to the rotary axis of the rotating member.

Abstract: An ornamental carousel assembly is disclosed which simulates the movements of a full-size carousel by supporting various carousel figures that both reciprocate vertically and revolve around a central vertical support column along with a canopy. The rotating and reciprocating ornaments are supported on a central support assembly by a bearing arrangement which minimizes the friction developed during movement of the ornamental elements so as to permit a miniature wind-up music box mechanism to drive the carousel. The drive assembly from the miniature wind-up music box mechanism includes a gear drive assembly for transferring drive from an output shaft of the miniature wind-up music box mechanism to rotate and reciprocate the various ornamental figures and a spring which is used to impart the necessary rotary drive force to the canopy.

Abstract: A massage device that simulates the action of the human fingers when applied to the head or body. A compact and portable appliance with a kneading mechanism, powered by a small electric motor. The motor is mounted horizontally and has twin shafts that extend beyond the ends of the motor. Gears are attached to both shafts, which are connected to an impart reciprocating motion to a pair of massage fingers. The speed of the motor may be varied by the switch. The kneading action is produced by bunching and releasing of the skin through reciprocating fingers powered by the motor.

Abstract: An arrangement for converting linear motion from a power source to rotary motion, where the power source is intended to coact with a cam in a manner to produce rotary motion, this rotary motion being carried out by a shaft. The invention is characterized by a first member which comprises a rod-unit (4) or a corresponding element intended to move reciprocatingly, and the cam (2) which is attached to one end of the rod-unit, this cam having curve-shaped parts (20, 21) on solely the surface thereof remote from the rod-unit. A second member includes two mutually opposing wing-shaped parts (6, 7) which project outwardly away from the shaft and which are rigidly connected to the shaft (3). A roller (8, 9) or corresponding element is rotatably mounted on the outer part of each wing (6, 7). The rollers are intended to roll on the cam (2), therewith converting linear motion to rotary motion.

Abstract: The reciprocating compressor is made with yoke units which connect opposite pairs of pistons while eliminating play between the yoke units and sliding block. Each yoke unit includes a pair of shoes which are removably secured to the pistons and which are adapted to guide the sliding block moved by a crankshaft. Each yoke unit also includes a clamp ring which surrounds the shoes and which biases the shoes towards the sliding block. The shoes are removably secured to the pistons to permit the yoke unit to be readily disassembled. Bow-shaped clamping members may also be employed within each yoke unit to further bias the clamp ring against the shoes.

Abstract: A crimp press having an eccentric guide in which an eccentric tang having a bearing runs. In contrast to the known eccentric guides, the eccentric guide is not straight but instead has a curved region on one side. As a result, during the first 90.degree. of the eccentric shaft rotation, the tappet covers the greatest part of the stroke path, and in the second 90.degree. of rotation of the eccentric shaft, only a short stroke path is executed, during which the deformation of the contact takes place. A crimp press with the eccentric guide has a more lightweight structure, is equipped with a smaller reduction gear and requires a lower rotational speed of the drive motor, as compared to conventional crimp presses.

Abstract: A mechanism for transmitting the power output of a music box to an ornament supported thereon, wherein the output shaft of the music box rotates an eccentric stub that is engaged within a slide link supported for vertical movement on a pair of guide rods. The ornament is supported by a tappet rod having a lower end secured to either the slide link or the drive stub, so that operation of the music box will impart the desired movement to the ornament.

Abstract: In the compact transmission of a hand-held reciprocating power saw, conversion of rotary to reciprocating motion is through a speed reducing bevel gear set (crown wheel and pinion) closely coupled by an eccentric drive pin in the crown wheel to a reciprocating saw blade carrier bar. A guide or bearing plate extending between the crown wheel and the saw blade carrier bar does double duty, guiding and supporting the saw blade carrier bar on one side and, on its opposite side, providing a thrust surface for the crown wheel. The crown wheel engages the guide plate through a thrust ring about equal in diameter to the diameter of the crown wheel. In this way, the shallow crown wheel may be positioned, supported and stabilized entirely by two simple bearings--a large diameter plain thrust bearing of essentially no radial capacity and a short radial bearing subject to virtually no bending or thrust loads.

Abstract: To be able to automatically operate an electric vehicle coupling with a contact bush, there is provided a one way drive which both advances the contact bush (for coupling) and retracts it (for uncoupling) via an eccentrically mounted rolling wheel and a slide rail in which the rolling wheel slides. The rolling wheel has an eccentricity of (.DELTA.x+.epsilon.)/2, where .DELTA.x is a desired advance and .epsilon. is a compression advance.

Abstract: A mechanism for transmitting the power output of a music box to an ornament supported thereon, wherein the output shaft of the music box rotates an eccentric stub that is engaged within a slide link supported for vertical movement on a pair of guide rods. The ornament is supported by a tappet rod having a lower end secured to either the slide link or the drive stub, so that operation of the music box will impart the desired movement to the ornament.

Abstract: An open-face fishing reel of the fixed-spool type has a housing and a spindle rotatably and axially displaceably mounted therein. A line spool is non-rotatably connected to the spindle and axially fixed to one end thereof. A drive shaft is mounted in the housing and extends at right angles to the spindle. A handle is arranged for rotating the drive shaft and a driving gear non-rotatably mounted thereon. A driver element is axially fixed on the spindle. An oscillating gear meshes with the driving gear and has an eccentric pin engaging the driver element in order, upon rotation of the drive shaft, to move the spindle back and forth in its longitudinal direction and, thus, oscillate the line spool about a center of oscillation.

Abstract: A display carousel simulates the movements of a full-size carousel by supporting the carousel figures on tappet rods that are caused to both reciprocate vertically and revolve around a central vertical column by a drive mechanism which rotates a crown gear that in turn also rotates drive gears connected to cam assemblies in engagement with cam followers carried by the tappet rods.

Abstract: Device for transforming the alternating motion of a piston into a circular motion of a shaft with the possibility of predetermining the stop time of the piston at each of the two dead centers. It is comprised of an assembly of two pistons connected by two racks alternatingly in mesh with a toothed sector keyed on the shaft. On either side of said sector there is provided a cam of which the groove takes charge of the pistons, through rollers at the two dead centers.

Abstract: A rotatable arm carrying an operative member is pivoted on a main housing (10) for movement between a rest position and a work position. A rotary shaft (28) is also journaled in the housing and can be driven by a wound spring (34) for rotary movement, which is transformed into a reciprocating, partial rotation of the arm by a linkage comprising meshing gears (18, 22) on the arm and on a fixed axis, and a crank and slotted link (24, 26, 30) between said shaft and the gears. A first and a second locking units (12, 14) are mounted stationarily with respect to the housing, each comprising a spring-biased pawl (40, 42) to engage the arm when it reaches said rest position and said work position, respectively, and each being releasable by an external control.

Abstract: A steering system for the front and rear wheels of an automotive vehicle comprises a front wheel steering mechanism having an output shaft, a rear wheel steering mechanism having an input shaft coupled to the output shaft, an output member for steering the rear wheels, and a motion converting mechanism for converting rotation of the input shaft to movement of the output member, a vehicle speed sensor, and a control unit connected to the vehicle speed sensor for controlling operation of the motion converting mechanism dependent on the vehicle speed detected by the vehicle speed sensor.

Abstract: An adjusting device for a door locking system of motor vehicles is described which prevents, by means of a mechanical brake device, the motor after being switched off from further running. Before an adjusting process is started, this brake device simultaneously checks if the adjusting force of the motor is sufficient to actuate the driven element. Moreover, a coupling is realized in the power transmission path by means of a crank pin axially movable.By taking these measures operational and functional reliability is substantially improved.

Abstract: Oscillatory movements are imparted to plural ornaments of an ornamental assembly from the rotary output drive shafts of a power drive source through a cam assembly driven by each output shaft and connected to plural tappet rods on which the ornaments are supported. Numerous orientations of the tappet rods may be realized to accommodate different positions of the ornaments by detachably securing U-shaped, rectangular-shaped and L-shaped blocks to a casing for rotatably supporting the tappet rods in the different orientations.

Abstract: A rake classifier provides reciprocating movement using crank-mounted drive shafts to establish translatory forward movement as well as lifting and rearward movement of the rake structure.

Abstract: An in-mold labeling apparatus includes a label transfer assembly carrying a number of label carriages each with a number of label transfer heads. A continuously rotating drive arm raises and lowers the assembly in simple harmonic motion to move the label transfer heads between label magazines for pickup of labels and mold halves of a blow molding machine. Lost motion connections are provided at the top and bottom of the stroke to facilitate pickup of labels and placement of labels in the mold halves.

Abstract: A microsurgery saw comprising drive means for producing rotary motion, rotary-to-lateral converting means operatively driven by the drive means, saw support means for pivotally supporting a microsurgery saw operatively connected to the converting means for transmitting lateral drive motion to the microsurgery saw, drive casing means surrounding and positioning the drive means and saw support casing means surrounding and positioning the saw support means is disclosed.

Abstract: The conventional crank between the power piston and the crank shaft in a reciprocating engine is replaced by a fixed length moment arm during the power stroke and a scotch yoke during the return stroke.The motion of a power piston is converted to rotary motion at an output power shaft through the fixed length moment arm. The moment arm is the radius of a sector gear which is non-rotatably secured to the output shaft. The piston rod is modified to include a rack gear and a slot. The slot and the output shaft form the scotch yoke.The sector gear engages the rack only during the down stroke of the piston. The sector gear disengages just before the down stroke is completed. The piston is then timely returned to the precise position of its next stroke through the scotch yoke.The fixed length moment arm acts as a lever through the entire stroke of the pistion which reduces combustion pressure and temperature. The reduced combustion pressure permits a smaller combustion charge which saves fuel.

Abstract: Herein disclosed is a wiper which can selectively assume a "semi-concealed mode" and a "full-concealed mode". The wiper comprises an output gear housed in a case, an output shaft having one end to which a motor arm is secured, a wiper arm assembly including a connecting rod which is pivotally connected to the motor arm, a first mechanism for transmitting rotation of the output gear to the output shaft, a bushing rotatably housed in the case and having an eccentric bore through which the output shaft is rotatably passed, a second mechanism for locking the bushing to one of the case and the output gear while changing relative angular positioning between the bushing and the output gear, and a push button arranged on the case and actuating the second mechanism when manipulated.

Abstract: A device for reciprocating movement, wherein a pair of drivingly connected gearwheels each has an outwardly extending stud that engages one of a pair of spaced, aligned slots in a transverse member. The transverse member is guided for movement by a pair of laterally spaced jambs that include opposed, respective longitudinally extending slots that receive the outer end portions of the transverse member. One of the gearwheels includes an axially extending concentric track that is circular and includes at least one gap or opening, and an electrical switch in contact with the track for regulating the operation of an electrical circuit that controls the rotation of the gearwheels.

Abstract: A device for interconverting rectilinear and rotary motion is designed so as to reduce side thrust exerted on a frame by a slide as the slide reciprocates linearly relative to the frame and such rectilinear motion is converted into the rotary motion of a crank or vice versa. More particularly, an elongated opening, which receives a crankpin of the crank such that the crankpin moves back and forth along the elongated opening, is provided in a swing mounted for oscillatory movement relative to the slide. At least one arm is pivotally attached to the frame and to the swing so as to effect the oscillatory motion of the swing relative to the slide as the slide reciprocates relative to the frame. As the slide reciprocates relative to the frame, the orientation of the elongated opening relative to the slide is constantly varied.

Abstract: An adjusting device in accordance with the invention for vehicular door locking systems operates such that in each adjusting action the adjusting force of the drive motor is checked to determine whether it is great enough to operate the output element. Only when this checking has a positive result is an adjusting action initiated.

Abstract: The soil loosening device has at least one, preferably two journals protruding downwardly from a supporting body, which are driven to a pivotal motion along a limited angle. Tine-like soil loosening tool members in bifurcate arrangement, to be driven along a circle segment, are mounted on the journals. The driving unit for driving the tools is characterized by its simple design since it consists of only a few, reliably guided and sturdy components. Particularly, there is provided a crank shaft which drives a toothed rack member to an oscillating motion. Gear wheels connected to the journals mesh with the toothed rack member. Accordingly the expenditure in manufacturing the device is low and the device has a high resistance to wear. The driving unit of the device may be attached to the supporting body in different angular positions by means of a coupling device.

Abstract: In a gear for the transmission and/or transformation of the changing or alternating rotary movement of a drive, a cam plate is associated with the latter and has a guidance channel for receiving the said driver. The driver rotates in a radius about a center, a further driver being connected to said center and engages in at least one reception groove of the cam plate, when the first driver is disengaged from the guidance channel.

Abstract: A dumping mechanism for a dumping toy truck with a rear deck is disclosed, which is provided with a covering element for preventing invasion of dust and gravel through a large hole for a lifting rod, as well as a buffering pad for a bearing shaft for the rear deck and a flexible buffer at the lower end of the lifting rod for absorbing any sudden shock or loading applied by an infant.

Abstract: A device for converting linear motion to rotary motion or vice versa employs at least two bearing members mounted for rotation about a crankpin of a rotatable crank, each bearing member being in constant engagement with its own individual bearing surface. A shuttle, which is mounted for reciprocating linear movement, carries the bearing surfaces, which are located on opposite sides of the crankpin and are offset relative to each other. Because the bearing members are in constant engagement with their associated bearing surfaces, the linear motion of the shuttle is continuously converted into the rotary motion of the crank or vice versa.

Abstract: A portable compass saw which is provided with an oscillation drive for driving a saw blade. The oscillation drive includes a gear, which is mounted on a shaft in the housing; engaging in the teeth of the gear is a pinion of a drive shaft of a drive motor. At a distance from its axis of rotation, the gear is provided with a pin extending parallel thereto. The pin is in driving connection with a clutch member, which is connected to the push rod and has a guide for the bolt, with the guide extending at right angles to the longitudinal axis of the push rod. The teeth of the gear are provided on that side of the gear which faces the push rod. The pinion is located in the region between the push rod and the gear, which is seated loosely on the shaft and is held on the latter under the load of the pinion. As a result, the gear is held reliably in its installed position, even though it is seated loosely on the shaft and is not secured to prevent axial displacement by separate securing members.

Abstract: An improved reciprocating knife includes a blade with a blade opening, a blade guide defining a track for guiding the blade reciprocation, a blade drive having a rotating drive shaft and an angled cam plate which extends into the blade opening, means for mounting the blade drive such that rotation of the drive shaft causes the cam plate to engage the rim of the blade opening to reciprocate the blade, and biasing means for biasing the rim of the blade opening against the cam plate to modulate the play between the cam plate and the rim. The biasing means is designed to aid blade reciprocation over a portion of the reciprocating cycle and to resist blade reciprocation over another portion of the reciprocating cycle. Reinforcing for the rim of the blade opening, a replaceable blade cutting edge section, and a collar for adjusting the fit of the drive shaft in the knife are also disclosed.

Abstract: A device for the reciprocating linear drive of a part, especially of a scraper at a calender cylinder, comprises a driver connected to the scraper and having two mutually parallel oppositely disposed abutments and an eccentric disposed between the abutments. The eccentric has an outside diameter which is smaller than the distance between the abutments. The eccentric is designed as a double eccentric with a driven inner eccentric fixed to a rotary drive shaft and with a freely movable outer eccentric floatingly mounted to the inner eccentric via an antifriction bearing.

Abstract: A bayonet-type saw having adjustable motor speed and orbital blade motion controls. A baffled passageway for directing air at the cutting zone is provided. An improved blade guide structure having a neck portion and two parallel spaced apart arms with a main roller bearing therebetween and saw blade side supporting nip rollers is included.

Abstract: A steering apparatus for a vehicle having steerable front and rear wheels includes a front wheel steering system for steering the front wheels, a rear wheel steering system for steering the rear wheels, a linkage member for coupling the front and rear wheel steering systems to each other. The rear wheel steering system comprises a housing adapted to be mounted on the vehicle, an input shaft angularly movably supported by the housing and having a front end coupled to the connecting means and an eccentric shaft on a rear end thereof, a joint member supported by the housing so as to be movable transversely of the vehicle, a pair of tie rods connected at ends to the joint member and at opposite ends to the rear wheels, and a slide member held in slidable engagement with the joint member and operatively coupled to the eccentric shaft for movement in response to angular movement of the input shaft.

Abstract: A choke valve with a power system operated via a single hydraulic line. The sleeve of the choke valve is operated by a carrier mounted through an eccentric pin and guide track arrangement to open and close the valve with the rotation of a valve drive shaft. A power shaft is driven by a clutch plate, ratchet connected to a drive clutch plate, in turn, operated by the shaft of an hydraulic actuator. The valve actuator creates an incremental step sensing of its full sixteenth turn movement by closing a fluid exhaust port and causing back pressure in the hydraulic line to occur. The actuator is reset by a pre-loaded torsion bar. Reset of the actuator also ratchet resets the drive clutch plate.

Abstract: A mechanical device for converting crank motion to reciprocating motion. The yoke with the perpendicular slot engaging the crank pin in the flywheel of the conventional scotch yoke is replaced by two metal blocks with curved cam tracks which produce a uniform stroke.

Abstract: In an intermittent link mechanism including a driven gear engageable with a drive gear to cause a predetermined changeover operation and including a recess partly breaking the tooth train of the driven gear to intermittently breaking the linkage with the drive gear, the driven gear is integrally formed with a cam for engagement with a stopper to lock the driven gear at the disconnected position. The improvement comprises first spring biasing the stopper for continuous contact with the cam, a blocking surface and an urging corner both formed at one end of the stopper back to back with each other, an engagement surface formed in the cam for contact with the blocking surface, a slanting surface formed in the cam for contact with the urging corner, a pin formed on the driven gear and slidably received in an elongated slot formed in an changeover member, and second spring biasing the changeover member so as to apply a starting rotational force to the driven gear.

Abstract: A diaphragm pump for use for artesian bores, simple in construction and easy to maintain. The diaphragm pump has a rectangular box-like main body with a shaft having an eccentric formed on the shaft to provide the driving force for the pump. Rectangular diaphragms are provided which, together with arcuate side plates, define the respective pumping chambers of the pump. A cage configuration of a rightangular tubular construction surrounds the rectangular box-like main body. Inlet and outlet manifolds are provided with corresponding valves for entry of water into the pump and for the exit of water from the pump.

Abstract: A scotch yoke connection between a piston rod and crankshaft comprises a free floating crank pin having a central portion of retangular cross section received directly between opposed internal bearing surfaces of the yoke, and end portions of circular cross section freely journalled in crankshaft flanges on opposite sides of the yoke. When the yoke is removed, the crank pin can be rotated to present a different pair of opposite surfaces to the bearing surfaces of the yoke thereby providing wear compensation. The bearing surfaces of the yoke may be defined by replaceable liner plates.

Abstract: A steering device for a vehicle including a steering wheel, front wheels and a steering mechanism therefor, rear wheels and a steering mechanism therefor, a pair of rear wheel steering tie rods connecting the rear wheels with the rear wheel steering mechanism, and an operating shaft connecting the front wheel steering mechanism with the rear wheel steering mechanism, the rear wheels being steered along with the front wheels under a steering operation of the steering wheel. The rear wheel steering mechanism includes a crank member rotated under rotation of the operating shaft and extending in a radially outward direction of the operating shaft, and a connecting member having the ends thereof connected to the inner ends of the tie rods and extending in the width direction of the vehicle while being movable in such direction.

Abstract: An orbital-action reciprocating power saw includes a motor-driven transmission that causes a saw blade carrier to reciprocate along an axis of reciprocation and move in a direction transverse to the axis of reciprocation to provide an aggressive cutting action. The transmission includes a rotary-to-reciprocation drive mechanism defined by a rotatably driven gear having an eccentrically mounted pin that engages a slotted yoke connected to the saw blade carrier. The saw blade carrier is mounted in a `floating` bearing that accommodates both reciprocation and movement in a direction transverse to the reciprocation axis. A rocker arm is pivotally mounted intermediate its ends with one end engaging the floating bearing mount and the other end engageable with an axial-face cam portion of the rotatably driven gear. The rocker arm is effective to move the saw blade carrier in a direction transverse to the axis of reciprocation to provide the desired orbital action.

Abstract: A reciprocating jigsaw tool having a plurality of selectible fixed linear plunger and blade motions as well as fully adjustable orbital and manual or auto scrolling saw blade control. A single mode selector is provided to select between the above operational modes. The mode selector includes a cam to selectively limit the oscillatory motion of a pivotally mounted plunger upper swivel bearing carriage assembly thereby directly limiting the degree of orbital plunger motion. The mode selector further includes a gear segment in operative engagement with a rack member which, in turn, engages an integral scrolling interface member of the top-mounted scrolling adjustment knob. The scrolling interface member incorporates an annular ring having a gap therein adapted to inhibit upward travel of the rack which, in turn, inhibits orbital saw operation when the plunger and blade is positioned other than in the cut forwardly position.

Abstract: A transfer mechanism has a tool mounting surface movable in a generally inverted U-shaped path back and forth between spaced stations thereby making the mechanism useful, for example, as part of a pick and place device for picking up articles one at a time, or in groups at a time, from one first station and placing them at the other station. The U-shaped motion is achieved by a first body supported on a base for movement along a first axis and a second body supported on the first body for movement relative thereto about a second axis perpendicular to the first axis. The movement of the two bodies along their respective axes is achieved by a single oscillating crank arm engageable with both bodies in such a manner as to obtain a smooth gentle acceleration and deceleration of the two bodies with a minimum amount of driving force and capable of providing a short cycle time if desired.