Abstract: A reverse-to-park windshield wiper crank arm assembly. The assembly includes a hub on the wiper motor shaft, a control member around and rotatable relative to the hub, an intermediate link having one end pivotally connected to a crank pin on the hub and including a slot which slidably receives a guide pin on the control member, a drive lug on the hub engageable on the side of the intermediate link and a coil torsion brake spring disposed in an annular space between the hub and a surrounding inner wall of the motor housing. When the hub rotates in one direction corresponding to normal windshield wiping, the intermediate link is captured in a folded position and rotates as a unit with the hub while a tang on the hub engages a first hook-like formation on one end of the brake spring and flexes the springs to flexed conditions.

Abstract: The transmission mechanism (M) allows the effective length (L) of the crank (6) to be varied to obtain a "parked position" of the windscreen wiper. The mechanism comprises an eccentric (9) secured to the shaft (3), this eccentric being mounted in a bore (13) of the crank (6); locking structure (V) for locking the rotation between the eccentric (9) and the crank (6) to ensure a linkage in rotation in one direction and to release the eccentric from rotation with the crank in the opposite direction; and locking structure (D) for locking the crank (6) for rotation in relation to the support (4) when the shaft (3) rotates in the reverse direction to the normal direction, as well as at the start of the rotation of the shaft in the normal direction.

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 rotary speed reducer, having the capability of infinitely variable output speed in the range from infinity to one, to two to one. Hydraulic pressure controls the output ratio, while the speed reducer is in operation. This mechanism operates by converting rotary motion from a motor to controlled reciprocating motion, which is converted to controlled rotary output motion.This operating principle is adaptable for use in a continuously variable automobile transmission.

Abstract: A retractable type wiper apparatus including a first crank connected to an output shaft of a reducer of a wiper motor and a second crank rotatably secured to the first crank by use of a first pivot shaft and so arranged that the second crank is maintained in a bent orientation at a predetermined angle relative to the first crank during the rotation of the first crank in the forward direction. The second crank is extended substantially straight relative to the first crank during the rotation of the first crank in the reverse directions. A stop member is provided on the first crank for defining a first locking recess and a second locking recess. A detent is longitudinally slidably mounted on the second crank. A spring means urges the detent selectively into the first and second locking recesses to thereby lock the second crank in place when the second crank is positioned at the predetermined angled position and at the straight extended position, respectively, relative to the first crank.

Abstract: A retractable wiper apparatus is disclosed in which two cam members are mounted about a drive shaft, the cam members serving to retain a detent in a locked position during rotation of the drive shaft in the forward direction and during the wiping operation. Upon reversal of the drive shaft rotational movement, the detent is released by the cam members and the wiper is placed in a retracted position.

Abstract: Variable stroke pump apparatus includes a photovoltaic array for providing electrical current to motors, one of which provides for the pumping action of a walking beam, one of which provides for movement of a control unit which varies the length of stroke of the pumping apparatus from a minimum of zero to a maximum, and one of which operates a counterweight for moving the counterweight in response to the pumping load. The apparatus includes mechanical elements which adjust the length of the stroke of the pumping arm, and a control system which controls the length of the pumping stroke in response to the output of the photovoltaic array.

Abstract: An exercise machine assembly (10) includes a body portion (12), handlebars (16) mounted on the body portion (12) and a seat (18). A pair of crank arms (26) are supported by the body portion (12) for rotational movement. A foot pedal (28) is mounted on an axle member (30) extending from each of the crank arms (26). The foot pedals (28) are mounted on adjustable supports for adjustably supporting each of the foot pedals (28) at any one of a plurality of positions along the entire length of the crank arm (26).

Abstract: Wherever large forces have to be applied over short distances it is useful to employ a force multiplier device. Very large transmission ratios are, according to the present invention, obtained by interruption of the axis of rotation (2) and insertion of an only slightly displaced force transmission axis (4). The force transmission axis (4) can be continuously displaced to both sides of the axis of rotation (2) by means of positioning facilities, preferable an adjusting screw (5) or two wedges. This way variable force generation is obtained with a widely variable range of transmission ratio.The invention can be employed e.g. for the manufacture and operation of presses, clamping, bending and tension devices.

Abstract: A pedal stroke adjuster includes a pair of crank frames each of which is mounted on one of the crank arms of a bicycle or exercise machine. A mounting bracket, mounting blocks and spacers are used to align each crank frame in a vertical position when connected to a crank arm. The sides of the crank frame provide guide rails for a pedal mounting block and in one embodiment of the invention one of the guide rails is notched to receive a spring-loaded detent latch that is located in the pedal mounting block. A finger operated release mechanism is provided so that the latch may be removed from the notch and the position of the pedal mounting block changed. In an alternate embodiment, each guide rail is notched. The notches are offset so that the detent latches can be readily contained in the confined space of the block. In another embodiment of the invention, a threaded rod is used to move the pedal mounting block up and down within the crank frame and along the guide rails.

Abstract: Apparatus which repeatedly severs wire segments from a wire strand and conveys them for further processing comprises a pair of wire feed clamps which are reciprocably movable in opposite directions to feed the wire strand along a first path. The wire feed clamps are affixed to parallel flights of a pulley-supported steel cable which is axially driven back and forth by an oscillatably rotatable cable drum. The cable drum is oscillatably driven by a rack-and-pinion mechanism which includes a drive rod or rack bar reciprocably movable by an orbiting crank pin on a support member which is adjustably mounted on a motor-driven rotatable feed crank. A locking mechanism releasably locks the support member and its crank pin in selected positions relative to the feed crank. The crank pin orbit determines drive rod stroke, cable drum position and wire feed clamp spacing and travel.

Abstract: The invention is a mechanism for regulating the speed and stroke of a transverse sealing means for a vertical packing machine using tubular film. The mechanism comprises a cranking disc, and elongated transverse rod and a vertical rod, these members being connected adjustably to each other to regulate the movement of the transverse sealing means.

Abstract: A needle bar actuating device for double chain stitch and/or overlock sewing machines provided with a driving crank, one crank pin of which has three angularly differentiated reference surfaces in order to define an equal number of positions and lengths for said driving crank with respect to its axis of rotation; to each of said positions and lengths corresponding a different predetermined stroke length of the needle bar.

Abstract: A crank assembly having an adjustment member extending approximately parallel to and fixed to one end of a crank lever, a bearing arrangement adjustably affixed to said adjustment member, a pivot arm rotatably connected to said bearing arrangement, a pedal and anchorage means for adjustably positioning the pedal on the pivot arm.

Abstract: A transmission mechanism for a vehicle windscreen wiper arrangement comprises an eccentric driven by an electric motor. A transmission member can be locked either to the eccentric to rotate with it or to a further transmission member which is in turn connected to the linkage of the wiper arrangement. In the second case the wiper arrangement performs a normal on screen wiping motion and in the first case, with the direction of the motor reversed, the wiper arrangement is driven from an on screen to an off screen park position. During this part of its travel the wiper speed is reduced as compared with the normal wiping speed. The mechanism is adaptable to existing wiper arrangements.

Abstract: The present invention provides an infinitely variable rotary drive transmission having an input member and an output member rotatably mounted to a housing. A slide is linearly reciprocally mounted to the housing in a direction substantially radial with respect to the axis of the input member. The input member rotatably drives an articulated shaft which is connected to the slide by rods so that the input member reciprocally linearly drives the slide. The slide in turn is connected to and rotatably drives the output member through a pair of cooperating clutch assemblies. A bottle screw varies the degree of articulation of the articulated shaft which, in turn, varies the stroke of the slide per revolution of the input shaft to thereby vary the rotational speed of the output member. A shift assembly is operable to reverse the direction of rotation of the output member as desired.

Abstract: A variable power transmission for varying the power from a reciprocating power source to a rotatable axle shaft comprising a crank interconnecting the power source to a rotatable wheel through a crank pin, an inner wheel jack shaft with gears or sprockets mating with gears or chains loosely carried by the rotating wheel, a crank pin sliding block carrying the crank pin on one end and threadedly engaging the jack shaft at its opposite end, a counter weight threadedly engaging the jack shaft opposite the crank pin sliding block and brakes for selectively stopping the rotation of a selected one of the gears or chains whereby the jack shaft turns translating the crank pin sliding block and counter weight along the jack shaft.

Abstract: An oil well pumping apparatus and method has an increased walking beam distance ratio of saddle pivot-polished rod distance (DE) to saddle pivot-equalizer pivot distance (DC) of at least 1.4:1. A crank arm axis (A) is positioned substantially to the rear of the equalizer pivot (C) and the pitman rod (21) is connected to the crank arm (16) at any selected stroke point along a crank arm wrist pin angle line (AB) offset at an angle (.phi.) to the center line of the crank arm. A precise counterbalancing is provided by radial adjustability of a weight assembly (17) on the crank arm, a floating safety lock assembly (64), and the addition to or subtraction from auxiliary weights (57) on a main weight member (54). The beneficial results of the present invention include reduction of peak torque requirements, elimination of gear reducer load reversals, and lower sucker rod stress throughout a very wide range of pumping applications with a universal piece of hardware.

Abstract: A link rod for driving wiper blades is coupled to and driven by a crank arm by means of an eccentric bush, so that an effective length of the link rod can be changed. A stopper portion is provided on the link rod for maintaining, during a normal operation, the eccentric bush in such a position where the effective length is smallest. A driving mechanism including three gears meshing with each other drives the eccentric bush when a wiping operation should be stopped so that the eccentric bush is rotated and placed at a position where the effective length of the link rod becomes largest, whereby the wiper blades are held in concealed positions during the blades are out of operation.

Abstract: A yoke type engine wherein the orbital path of the slider is alterable to effect piston stroke and compression ratio changes. A crank component has a crankpin which carries and positions the slider. A boss of the crank component is carried by a control shaft in an offset manner. Timing gears normally drive the control shaft in synchronization with the crankshaft to maintain a constant stroke and compression ratio. Relocation of certain timing gears by an actuator causes the control shaft to rotationally advance or retard to reposition the crank component carried thereby to in turn alter the orbital path of the coaxial crankpin and slider relative to a crankshaft axis. Accordingly, high and low compression orbits for the slider may be effected to best suit engine loads. A variable length throw couples the slider to the crankshaft. The orbital path of the slider provides increased crankshaft leverage over conventional engine arrangements.

Abstract: A crank for a bicycle, which mounts a pedal shaft into a through bore of each crank arm so that the angular position of the pedal shaft can be changed to change the effective length of the crank arms employs first and second adapters, each having a mounting bore for the pedal shaft which is eccentric with respect to the center of the through bore and an engaging portion engageable with one side of the crank arm, the pedal shaft screwing with at least one of the adapters, at least one of the adapters and the crank arm having therebetween an anti-rotation mechanism so that each adapter is fitted into the mounting bore in relation of being changeable in position and non-rotatable at the changed position with respect to the crank arm, the adapters being drawn toward each other to urge the engaging portions to the crank arm, thereby fixing the pedal shaft to the crank arm through each adapter.

Abstract: A crank device for soil compacting apparatus having a crank shaft and a connecting rod coupled to each other by two eccentric elements rotatable about parallel shafts in which the first eccentric element is provided with a plurality of recesses and the second element is provided with a locking bolt with the elements being rotatable to relative positions at which recesses respectively are generally aligned with said bolt, with the bolt being mounted for movement between a first position at which it can enter a first recess generally aligned therewith and cannot enter a second recess generally aligned therewith and a second position at which it cannot enter the first recess aligned therewith and can enter the second recess aligned therewith.

Abstract: A crankshaft rolling machine rotatably guides a crankshaft to be rolled. At least one movable rolling fixture carrying rolling dies is positionally controlled by two synchronously driven rotatable cranks having parallel mounting shafts. Eccentric crank pins are coupled to the fixture. An adjustable connection is interposed between crank pins and mounting shafts of the cranks.

Abstract: The invention relates to a mechanism for adjusting the feed length of a rack and pinion roll feed mechanism of the type generally used for feeding strip stock into presses. The feed length adjusting mechanism comprises a hub member connected to the press shaft, a throw block connected to the hub, and a slide rotatably connected to the connecting rod of the rack and pinion drive for the feed. A slide is locked to the block by means of a piston and cylinder lock mechanism, and a lead screw is threadedly connected to the slide and rotated by a bidirectional pneumatic motor mounted to the block, whereby rotation of the lead screw causes the slide to translate within the slideway. This changes the length of the eccentric connection between the rotating block and connecting rod thereby proportionately changing its stroke and the amount of strip stock which is fed into the press during each cycle of the feed mechanism.

Abstract: A crank gear with adjustable crank radius for motor driven beating working implements, especially tamping implements, jack hammers, hammer drills and the like, in which the crank pin for the connecting rod is eccentrically arranged with regard to the crank shaft axis and when being adjusted moves in a circular path which is substantially parallel to its plane of circulation and is eccentric with regard to the crank shaft axis. That end of the crank shaft which faces the connecting rod is a crank disc. The crank pin is eccentrically arranged on a clamping or coupling disc which with regard to the crank shaft axis eccentrically engages that end face of the crank disc which faces toward the crank pin. The clamping disc, when in disengaging position, is rotatable from the outside of the crank gear relative to the crank disc and is adapted in a selected operative position to be arrested relative to the crank disc, by means of a tension force pressing the clamping disc against the crank disc.

Abstract: An apparatus for adjusting the stroke length of a crank rod includes a pair of plates having adjoining broad faces mounted on one of the faces of a flywheel. A crankpin or other means is located on the exposed part of the outer plate for connection of the crank rod. One of the plates has a spline member which is located off center with respect to the flywheel axis. The other plate has a grooved portion mateable with the spline member. The outer plate is detachably connected to the inner one and may be rotated with respect thereto, and then re-connected to provide positive change of the stroke length of the crank rod.

Abstract: A stroke adjustment for reciprocating mechanisms which includes an external adjusting wheel to vary internally the longitudinal position of a carrier through an interconnected shaft and gear. A butterfly arm is pivotally connected to the power shaft and is pivoted by the carrier to raise or lower one end of a connected crank to vary the length of the piston stroke by changing the eccentricity of the crank.

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: The variable speed transmission includes a power input drive shaft and a variable throw crank having a zero throw position aligned with the input shaft. The variable throw crank is coupled to the input shaft for rotation therewith and its eccentricity with respect to the axis of rotation of the input shaft can be varied. A control plate, also referred to as a master link, is rotatably mounted on the crank and a plurality of clutches having input and output shafts are operatively connected to the control plate through a plurality of pitman type links, whereby the control plate oscillates the input shafts of the clutches upon rotation of the power input shaft and variable throw crank of the transmission. The outputs of the clutches are connected to an output shaft for the transmission.

Abstract: A filling machine for filling several containers with predetermined amounts of a product in which the several filling units are actuated by a common driving member; the common driving member itself is actuated by two eccentric drive mechanisms each including a volume-changing adjusting mechanism of the lead screw type; the eccentric drive mechanisms are adapted to be stopped in a predetermined position by a volume-changing stoppage device to enable the installation of an interconnecting member between the two volume-changing adjusting mechanisms to assure identical adjustments.

Abstract: A welding head oscillating mechanism for a welding machine which is selectively operable to alter the width of the weld bead or area by selectively rotating an adjustment shaft about its axis to change the stroke of a crank and slide mechanism.

Abstract: There is provided a turning mechanism for article orientation, as in a compensating stacker of printed signatures, which is characterized by a three link system including a stationary mounting block having mounted therein for rotation a turnable shaft, a rotating lever arm attached to the turnable shaft, and means for selectively moving the lever arm through 180 degrees of rotation.

Abstract: A tool controlling apparatus for rotating a tool through a circular path of adjustable radius wherein a first plate member is caused to move in a first direction and second plate member is caused to move with said first plate member and in a direction perpendicular to the direction of movement of said first plate member thereof causing any point on said second plate member to travel in a circular path. A cutting tool is attached to said second plate member.

Abstract: An adjustable stirrup type motorcycle gear shifter allows the cyclist to slip his shoe into shifting position, either sidewardly or lengthwise, for safe retention during up and down gear shifting.

Abstract: The flying shear is designed as a crank rocker shear for crosscutting metal strips continuously fed thereto, with the crank effecting entrainment of strip cutting knives in the direction of strip movement and return of the knives in the opposite direction, and with the crank radius being adjustable in accordance with different cutting lengths of the strip. A cylindrical drum is rotatably mounted in the shear frame, and the crank axle is mounted within the drum to extend parallel to the axis thereof and for adjustment radially of the drum. Cooperating wedge surfaces are provided on the inner surface of the drum and on the crank axle, and the wedges on the crank axle are adjustable by a threaded spindle, having right hand and left hand threads, threaded through the wedges and rotatable, to adjust the crank radius, by a hydraulic motor.

Abstract: An eccentric having a variable eccentricity that is adapted for use with drive units that oscillate a continuous casting mold is readily adjustable to suit the desired speed of withdrawal of cast strands of different cross sectional sizes.

Abstract: A double-eccentric variable drive system is disclosed comprising a drive shaft, two eccentrics mounted on the drive shaft to be driven thereby, and means for varying the eccentricity of both of the eccentrics simultaneously. The means in question comprises a spindle having left-hand screw-threads on one end thereof and right-hand screw-threads on the other end thereof and an enlarged central portion rotatably mounted in the shaft but radially fixed relative thereto. The eccentrics each have a radial bore therethrough tapped to correspond with and receive the threads of the spindle, the bores being aligned on opposite sides of the shaft. Each eccentric has an axial bore larger than the diameter of the shaft in a direction parallel to the spindle to allow for movement of the eccentrics radially of the shaft.

Abstract: A swing drive, in particular a reciprocating drive for moulds in continuous casting plants, has a balance beam structure with which a lifting rod actuated by an overhung crank engages. The shaft of the overhung crank is eccentrically mounted in a driving toothed wheel of the swing gear and the crank radius is equal to the distance between the axes of the driving toothed wheel and the crank shaft. The crank shaft is adjustable in the direction of the crank circle and the crank pin is pivotable relative to the axis of the driving toothed wheel.

Abstract: The invention provides a linkage for transmitting axial reciprocating movement from one shaft to a parallel shaft and comprising a bar pivotally mounted at a fixed but adjustable position relative to the shafts, the bar being pivotally mounted at a fixed position on the bar, a pivotal connection fixed on one axial shaft and slidably mounted on the bar to one side of its fixed mounting, and a pivotal connection fixed on the other axial shaft and slidably mounted on the bar to the other side of its fixed mounting. The linkage may especially be used in the drive of the plunger of gob forming apparatus for use in the production of glassware whereby by adjustment of the linkage the plunger stroke and height may be varied.

Abstract: The rotary drive unit for forming or punch presses and the like has an interposed relation between the drive shaft of the press and the face plate to which the reciprocating rack is pivotally secured. One end of a link member is pivotally connected to an eccentric crank pin carried by a drive ring fixed to the drive shaft and rotated thereby, and the other end of the link member is pivotally connected to a second eccentric crank pin carried by a circular disc member mounted for rotation in a housing provided by the press, the disc member having a center of rotation spaced a distance from the axis of rotation of the drive shaft. With the drive shaft rotating at uniform speed, the disc member functions as a driven member and rotates at a speed which is non-uniform. More specifically the face plate will rotate to impart a complete feeding stroke of 180.degree. to the rack for a minor portion of each revolution of the press drive shaft followed by a complete return stroke of the rack of 180.degree.

Abstract: Device for producing and adjusting the feeding stroke of a transfer feeder for use in a transfer press which has a carrier for mounting thereon a pair of parallelly spaced transfer bars extending in the longitudinal direction of a working table of the press. The carrier is reciprocally moved along a pair of guide rods extending parallel to the transfer bars by the action of a transmitting mechanism connected to a drive source of the press.

Abstract: A control linkage for a servo valve of a variable displacement hydraulic machine includes a lever arm adjustably connected to the servo valve by means that is operative to adjust the null position of the valve with respect to the lever, and includes cam means for adjusting the length of the lever arm.

Abstract: A mechanism for moving a cross slide in a multiple-spindle automatic machine has a rotary face cam which is driven by a gear and is angularly adjustable with respect to the gear, a first lever which is pivotable on a first shaft parallel to the axis of the cam and which has a first arm carrying a roller follower for the cam and a second arm having a slot for a sliding block which is mounted on a pin-shaped carrier. The carrier extends through one or more slots of a second lever which is rigid with a second shaft, and the carrier can be fixed to the second shaft in a selected position by means of washers and nuts. The second shaft is rigid with a gear segment which meshes with a toothed rack affixed to and adjustable lengthwise of the slide. The first lever may be a bell crank lever or a straight two-armed lever, and the second lever may have a single arm with a single slot for the carrier of the sliding block or a bifurcated arm with two aligned slots for the carrier.