Abstract: A lifting device adjusts the height of a top part relative to a base part for a patient couch. The lifting device includes an elevator mechanism and a drive unit for height adjustment. The elevator mechanism has a scissor mechanism with two scissor arms, which are pivotably connected together via a scissor pivot joint. The elevator mechanism further includes an elbow mechanism having two elbow arms, which are pivotably connected together via an elbow pivot joint. Each of the elbow arms is linked to a scissor arm via a linking pivot joint.

Abstract: An elevating load platform comprising a base member and a load supporting member interconnected by a linkage means that facilitates vertical movement of the load supporting member generally parallel to the base member, and a plurality of coil springs positioned to urge the load supporting member upwardly relative to the base member so that when the load supporting member is laden the coil springs are compressed, and as the load is progressively removed the coil springs urge the load supporting member upwards to thereby maintain the load supporting member at a desired height, the linkage means comprising a pair of spaced scissor linkages interconnected by a central cross-member, the plurality of compression springs being positioned in a spaced array interposed between the base member and the cross-member.

Abstract: An access tower comprises a movable wheeled base (10) to which is mounted one end of a scissor lift mechanism (12), the other end of which supports a working platform (14). The scissor lift (12) can be actuated to displace the working platform (14) between a fully retracted or stowed condition and a fully extended or deployed condition.

Abstract: A structural member is provided in an embodiment for a lift assembly. The structural member comprises an elongated member having a pair of spaced apart sidewalls with a pair of aligned apertures therein. A joint assembly comprises a support member is positioned between the sidewalls and aligned with the apertures. The support member has an outer dimension greater than the diameter of the apertures so the support member will not pass through the apertures. An interior sleeve is disposed adjacent to the support member and extends through the apertures. The interior sleeve has end portions projecting beyond the sidewalls. The end portions are cold worked, radially flared portions adjacent to the sidewalls. The radially flared portions have an outer diameter greater than the diameter of the apertures. A portion of the sidewalls around the apertures are fixedly captured between the radially flared portion of the interior sleeve and the support member.

Abstract: A lift machine comprises a base, a support for supporting a load above the base, a lift actuator operatively connected between the base and the support for raising and lowering the support relative to the base, and a support stabilization mechanism operatively connected between the base and the support for stabilizing the support relative to the base during raising and lowering of the support by the lift actuator. The support stabilization mechanism comprises a pair of opposed linkages, with each of the pair of opposed linkages having a lower torque tube link and an upper torque tube link. The lower torque tube link has a torque tube operatively pivoted to the base. The upper torque tube link has a torque tube operatively pivoted to the support.

Abstract: An elevator for moving a person between two levels. The system includes at least one carriage in a hoist way extending between two floors. A lever arm lifting system moves the carriage. The lever arm may be an articulated lever arm having a primary arm having a first end rotating on a primary shaft supported on the building structure and a primary sprocket wheel fixed to the primary shaft. A secondary arm has a first end rotating on a secondary shaft carried on a second end of the primary arm. A secondary sprocket wheel is also carried on the secondary shaft and is fixed to the secondary arm. The primary and secondary sprocket wheels are coupled by a chain belt. A second end of the secondary arm is coupled to the carriage. An electric motor is coupled to the primary arm to rotate it around the primary shaft, and to thereby move the carriage between the two levels.

Abstract: An anti-sway stabilizer accessory support means and a utility tray assembly are disclosed. The utility tray assembly may be readily attached to any standard scissors lift and provide convenient storage of frequently used items by a worker.

Abstract: A lift between lower and upper levels of a house includes a cabin and an essentially horizontal platform which is essentially vertically movable by actuating elements arranged thereunder. The actuating elements include at least one pair of rotatably mounted arms pivotally arranged around an axis in the middle part thereof. The free ends of the first arm of one pair are pivotable around a fixed axis and respectively around an axis sliding along the platform. The free ends of the second arm are pivotable around a fixed axis connected to the platform and respectively around a sliding axis. An actuating unit interacts with at least one of the arms such that the pivot axis of the second arm for the platform, the middle pivot axis of the arms of the pair and the pivot axis of the first arm are never aligned.

Abstract: A luggage storage structure for an automobile includes: a storage concave portion formed so as to project downward on a floor panel and capable of storing luggage, a plate member for approximately closing an upper part of the storage concave portion, and a transfer mechanism for transferring the plate member approximately up and down in an upper part of the floor panel. The luggage structure is securely protected by the plate member and the transfer mechanism.

Abstract: The disclosed invention is a portable vehicle lift for elevating a motor vehicle. The lift includes spaced apart beams which are positioned under the vehicle, each beam has a plurality of hinged strut pairs, each with associated threaded collars. Strut pairs are moved together or apart by directionally rotating a threaded shaft through the threaded collars. Supplemental lift springs may be positioned along the shaft to selectively engage and urge the strut pairs during operation.

Abstract: A lift assembly includes a first platform provided with a top surface, a pair of opposed sides, and wheels and brackets connected to one of the sides for rotating the assembly. A plurality of rectilinear support shafts have opposed end portions conjoined to the platform and extending upwardly therefrom, and are spaced at opposed corners of the platform. Inverted U-shape guide rails are telescopically engageable along a length of the support shafts and have a pair of rectilinear regions slidably positionable about the support shafts. A second platform is provided with top and bottom surfaces, and apertures formed at opposed corners thereof that are vertically registered with the support shafts. A lifting mechanism is included for vertically biasing the second platform and the guide rails along the support shafts. The lifting mechanism is connected to the top surface of the first platform and the bottom surface of the second platform.

Abstract: A ground-movable load-lifting vehicle for lifting a load over ground. The vehicle comprises a platform bed, a ground-movable carriage, and an extendible scissor linkage assembly supporting the platform bed spacedly over the carriage. A hydraulic ram system enables power extension of the scissor linkage assembly against the bias of a load supported by said platform bed. The carriage further includes peripheral ground-engageable pivotal casters, rotatably mounted to the carriage in spaced apart fashion, and a pair of ground-engageable drive wheel assemblies, mounted for relative movement to a central portion of the carriage, wherein the drive wheel assemblies provide omnidirectional displacement capability for this load-lifting vehicle. A power unit, controlled by an electronic circuit, powers both the hydraulic rams of the scissor linkage assembly and the drive wheel assemblies.

Abstract: A straddle loader for lifting a load includes an upper frame having a spreader for grasping the load, a compartment for an operator, at least two traveling frames for receiving the load, and a lifting system connected to the upper frame and the plural traveling frames. The lifting system varies the distance between the upper frame and the plural traveling frames by uniformly transferring the load to the traveling frames so that the upper frame and the traveling frames remain parallel and perpendicular. The straddle loader further includes a plurality of telescoping beams associated with the lifting system so that at least two telescoping beams are connected to each of the traveling frames. Each telescoping beam is capable of extension and retraction. Stationary pivot shafts connect each end of each of the telescoping beams to the respective upper frame or traveling frame and to a pressure cylinder associated with each of the telescoping beams.

Abstract: A scissor lift mechanism (1) having at least two scissor elements (4, 5) connected in pairs by a swivel axis (3). The drive (11) for raising and lowering the scissor elements (4, 5) is provided by a traction member (13). To reduce the driving power required for operation while at the same time reducing control complexity, the scissor lift mechanism (1) is equipped with two coupling bridges (14, 15) situated on opposite sides of the swivel axis (3) and pivotably supported by thrust struts (22, 23) on each of the two scissor elements (4, 5), respectively. The distance “a” between the coupling bridges (14, 15) and the resulting height of lift “h” are easily variable by applying a tractive force “F” via the traction member (13, 25) which is guided around reversing rollers (16) and back and forth along a plurality of generally parallel paths (18, 19, 20, 21) between the two coupling bridges (14, 15).

Abstract: The invention relates to a scissors-like lifting device having a pair of scissors that are arranged between a carrier or support unit and a base unit. Each pair of scissors is provided with two arms which can be pivoted about corresponding axles. The scissors-like lifting device is provided with a lifting truck that can be moved by means of a drive in order to open and close the scissors. The inventive configuration efficiently controls the lifting movement. The band-like traction mechanism can be wound-up on the drum by means of the drive in order to pull the lifting truck towards the scissors axle so that the scissors are opened. The band-like traction device can be unwound from the drum so that the truck is moved away from the scissors axle by the force of gravity on the support and arms thereby closing the scissors.

Abstract: A mechanism is disclosed that provides motion and force while maintaining parallelism between a base structure and a movable structure. This is accomplished by opposed pairs of pivoting arm assemblies, which are synchronized by a timing device that links opposed pairs of pivoting arm assemblies to ensure that the arm assemblies move the same distance. The mechanism operates in any spatial orientation. Applications of the mechanism include lift tables, adjustable work stations, vertically adjustable conveyors, and others.

Abstract: A method for adjusting a first force applied to a movable element in a first position of the movable element by a force applying device, the force applying device applying a second force to the movable element in a second position of the movable element. The method includes connecting the movable element and a base element with a scissors-type linkage; mounting the force applying device to the scissors-type linkage at a first mounting point; mounting the force applying device to the base element at a second mounting point; and moving at least one of the first and the second mounting points along a constant force curve, so that the second force remains constant as the first force is adjusted. A device for adjusting a first force applied to a movable element in a first position is also provided.

Abstract: A wheelchair lift assembly is provided. The wheelchair lift assembly is adapted to be disposed in a cavity located below a lower surface when in a stowed position. The wheelchair lift assembly includes a lift platform and a lifting mechanism coupled to the lift platform for reciprocating the lift platform between a lowered position, wherein the lift platform is substantially coplanar with the lower surface, and a raised position, wherein the lift platform is substantially coplanar with an upper surface. The wheelchair lift assembly also includes a lift platform barrier coupled to one end of the lift platform and a lift platform barrier actuating assembly coupled to the lift platform barrier.

Abstract: A free link system including a drive assembly mounted along an imaginary longitudinal center line of a rectangular base, the drive assembly including two identical units provided on opposing ends of the base; a main platform that is raised and lowered by operation of the drive assembly; and a guide frame mounted to the base extending perpendicularly to the same, the guide frame being provided on one long end of the base and acting to guide the movement of the main platform.

Abstract: This invention relates to a lifting device for low-weight loads, and may have a lift and tilt arrangement comprising one single lift arm and one single tilt arm. In that case those arms can either be located centrally in relation to the platform or at one of its sides. Two lift arms and two tilt arms together may be used with related link arms, those lift and tilt arms then being suitably journalled on a common horizontal shaft and the link arms on another horizontal shaft, those two shafts extending transversely to the load-supporting portion of the platform.

Abstract: A pallet positioner includes a support frame that consists of a main upright structure with a pair of spaced, parallel outriggers extending horizontally at ground level. The distal ends of the outriggers are connected by a flat, low-profile ramp. The upright structure includes a pair of vertical guide masts rigidly mounted on a horizontal base bracing the proximal ends of the outriggers. A cantilevered carrier with a rotatable platform is mounted laterally for vertical motion along the vertical guide masts. A pneumatic bellows and an air reservoir in the base are adapted to raise and provide self-leveling to the platform. Two hydraulic cylinders provide dampening and a stabilizing effect. The flow of hydraulic fluid in the cylinders is used to control the motion of the carrier. A braking system under the platform prevents its rotation at ground level.

Abstract: A scissors lift with a drive apparatus that raises and lowers a load platform by extending and collapsing a scissors linkage. A drive motor moves a cam follower through generally horizontal reciprocal motion. The cam follower engages and follows a cam mounted on the scissor linkage to extend the scissor linkage. The cam is positioned and shaped to gradually accelerate and decelerate scissor linkage extension. The cam is also shaped to allow the drive motor to accelerate to an optimum desired operating speed before causing the drive motor to bear the load of extending the first scissor linkage and raising the load platform.

Abstract: An adjustable height platform comprising a bottom platform, a top platform and a scissors linkage secured between the top and the bottom platforms. The scissors: linkage includes scissors legs which pivot about a pivot axis. A drive system provides a horizontal force to the scissors linkage. An unlocking mechanism lifts the pivot axis in response to the horizontal force and unlocks the scissors legs from a collapsed, retracted, and aligned position. After unlocking the legs, the horizontal force continues to raise the top platform with respect to the bottom platform.

Abstract: A lift for vehicles comprises two parallel ramps for loading the vehicles which can be actuated so as to move vertically. The ramps have concurrent ends which are rigidly coupled to the cross-member of a portal-like frame, with the cross-member being actuatable with a vertical translational parallel motion by way of corresponding actuation along a pair of posts. Corresponding grid-like frames, with rods hinged in a scissor-like arrangement for the constant resting of said ramps on a resting surface and/or floor, are provided below each ramp.

Abstract: A method for adjusting a first force applied to a movable element in a first position of the movable element by a force applying device, the force applying device applying a second force to the movable element in a second position of the movable element. The method includes connecting the movable element and a base element with a scissors-type linkage; mounting the force applying device to the scissors-type linkage at a first mounting point; mounting the force applying device to the base element at a second mounting point; and moving at least one of the first and the second mounting points along a constant force curve, so that the second force remains constant as the first force is adjusted. A device for adjusting a first force applied to a movable element in a first position is also provided.

Abstract: This mechanism is designed to provide motion and force while maintaining parallelism between a base structure and a movable structure. This is accomplished by opposed pairs of pivoting arms which are synchronized by a timing device which links an arm with the arm opposite to it and ensures that these arms move the same distance but in opposite directions. This mechanism will work in any spatial orientation. Applications of this mechanism include lift tables, adjustable work stations, vertically adjustable conveyors, and others.

Abstract: A height-adjustable cart is provided and includes an undercarriage having a wheeled frame, a double scissor-type lift mechanism and a support frame which is height-adjustable relative to the wheeled frame by the lift mechanism. The wheeled frame includes a pair of extendable rear wheel supports which are each pivotable between a retracted position and an extended position. While in the retracted position, the wheels are in close proximity to the frame, thereby defining a small cart “footprint” for compact storage. While in the extended position, the wheels extend transversely away from the frame, thereby widening the cart “footprint” for stability and for ease of transportation. The height-adjustable cart further includes a detachable table onto which heavy equipment may be loaded. The detachable table includes wheels suitable for carrying the weight of the equipment and for transporting the heavy equipment thereon separate from the undercarriage.

Abstract: A lift assembly includes first and second elevator structures, each including a first scissors section, a second scissors section pivotally connected to the first scissors section and supporting a lift shaft which extends between the first and second structures, at least one intermediate scissors section pivotally connected to the second scissors section, and an upper scissors section pivotally connected to an uppermost of the intermediate scissors sections and supporting a top bar. First and second side plates upstand adjacent the first and second structures, each having therein an elongated slot, the lift shaft being disposed in the slots. A lower pulley is mounted proximate each of the base bars on a common drive shaft. An upper pulley is mounted proximate an upper end of each of the side plates. A strand extends from each of the lower pulleys to each of the upper pulleys, and thence to the lift shaft.

Abstract: A lift for a vehicle comprising a support platform for supporting a vehicle; scissor structure displaceably secured beneath the support platform for lifting the support platform and vehicle; a first and second U-shaped rod, each rod having two ends connected together at their ends for pivotal movement therabout so as to releasably secure at least one wheel of a vehicle relative the platform so as to permit a vehicle to be raised and lowered on the platform.

Abstract: A scissor lift that achieves enhanced vertical travel of the deck for a given amount of horizontal travel of the legs. The enhanced vertical travel is achieved by overlapping the deck pivot point (i.e., the point at which a leg is pivotally connected to the deck) with the frame pivot point (i.e., the point at which a leg is pivotally connected to the frame) when the deck is in the fully lowered position. That is, the deck pivot point is lower than the frame pivot point when the deck is fully lowered. The pivot points can occur on the same leg or on different legs. The deck and frame pivot points can provide purely pivotal movement or a combination of pivotal and some other type of movement (e.g., translational movement). The above-described scissor lifts can be utilized to perform corresponding methods of lowering a scissor lift. In the method, the deck pivot is positioned lower than the frame pivot when the deck is in the fully lowered position.

Abstract: A lift for a vehicle comprising a displaceable support device moveable between a first inground position to a second above ground position for supporting the vehicle, scissor mechanism associated with the displaceable support device for lifting the displaceable support structure and the vehicle, support frame member disposed inground, the scissor mechanism contained in the support frame member where the displaceable support device moves between the first and second positions.

Abstract: A maintenance trestle is stowable in folded-together form in the floor of an elevator car and has a platform forming the floor. The platform is steplessly adjustable in height between a stored position and an erected position by lifting equipment operating on the scissors principle. Buttons on a car panel that normally control car operations, such as opening and closing doors, can be converted to controlling the extension and retraction of the platform.

Abstract: A safety skirt is disclosed for an industrial lift apparatus. The lift apparatus has a base, a movable element separate from the base, a connecting assembly joining the movable element to the base, and a power system for actuating the connecting assembly to change the position of the movable element relative to the base. The safety skirt includes a skirt bottom adapted for attachment to the lift apparatus base and a skirt top adapted for attachment to the lift apparatus movable element. A plurality of skirt sides extend between the skirt bottom and the skirt top. They are adapted to surround the lift apparatus connecting assembly in order to isolate industrial personnel from the area between the lift apparatus base and lift apparatus movable element. Each of the skirt sides is formed from a plurality of pleats, each having an upper flap and a lower flap made from a flexible nonwoven material.

Abstract: An assembly line fixture includes an elevator having a mounting surface, and a turntable mounted on the mounting surface and rotatable about an axis of rotation with respect to the mounting surface. Also mounted on the mounting surface are a detent mechanism, a locking mechanism, and a clamping mechanism. The detent mechanism includes a roller that is spring biased against the turntable, and that is operable to resist rotation of the turntable at preselected angular positions. The locking mechanism includes a lever, a locking member, and a biasing member. The locking member engages notches in the turntable to prevent the turntable from rotating. The lever actuates the locking member and the biasing member biases the locking member toward the notches for engagement therewith. The clamping mechanism includes at least one clamp that is adapted to engage a portion of an apparatus.

Abstract: The present invention relates to a hydraulic platform lift, in particular a motorcycle platform lift, comprising a parallelogram chassis in which on one of the two parallel lifting arms a hydraulic cylinder, supported on the sub-frame, is articulated. The task of the invention is providing such a platform lift which has a substantially better intrinsic weight/lifting-force ratio than the comparable platform lifts known from prior art.

Abstract: A lift truck, especially for use in air cargo handling, includes a drive part having at least one driving wheel and a load part guided at the drive part and having at least one roller. Two lifting devices are operable in sequence. The lifting devices each set a height of the load part relative to the drive part in a respective lifting stage.

Abstract: A tub-like member is recessed below floor surface level in a pit and carries therein an extendable and retractable lifting mechanism. The tub includes a horizontal outwardly extending flange essentially at floor surface level, and overlying the floor surface, which a loader/unloader may easily manipulate with foot pressure to rotate the tub and stacked articles on a pallet carried on the lifting mechanism within the tub-like member. Easily operable controls are provided for the loader/unloader to incrementally raise and lower the lifting mechanism to present the top article of a stack on a pallet at a comfortable lifting height. Also included is a new and improved mechanism for supporting a pallet for manual rotation and incrementally controlled vertical movement.

Abstract: An elevatable conveyor section having a base, a conveying element for supporting articles to be conveyed and scissors-linkage. The scissors-linkage has first ends connected with respect to first ends of the base and conveying element and second ends connected with respect to second ends of the base and conveying element. A lift has a linearly moving component connected to a perimeter of the conveying element. The lift is operated to selectively move the moving component and the attached conveying element up and down.

Abstract: A lifting apparatus including a base, a load platform, a vertically expandable actuator linkage mechanically coupled between said load platform and said base, and a glycol operated actuator chamber having a compressible bellows. Means are provided for mechanically coupling the compressible bellows between the base or platform and the linkage. This provides an extremely stable platform, and one which remains rock solid once it is set in position, because glycol is a non-compressible fluid and is not affected by normal temperature variations found in industrial settings.

Abstract: A lift table modified to permit user configuration to achieve a plurality of functions is provided. The lift table may be configured for any of these functions by the end user, without the use of special tools or training. In one embodiment the lift table is provided with coupling devices such as pockets, flanges, brackets, etc. which can be coupled to a plurality of standard sized or spaced attachments for multiple purposes such as pallet forklift, tilt/layover, conveyor, turntable and the like.

Abstract: A robotic shelf handling apparatus usable with a power lifting device such as a swingreach or forklift which can be used to remove and replace large capacity conventional storage shelves. The shelf handling apparatus defines or pockets or slots for receiving a power lifting device fixedly secured thereinto and is positioned between vertically extending corner stanchions of shelving immediately below its shelf to be removed. The apparatus includes a frame with a shelf deck positioning device vertically movable upwardly therefrom to remove a shelf deck. Further the design includes a lateral stabilization means including a plurality of wheels and guide rollers adapted to engage the vertically extending stanchions of the shelving for maintaining lateral stability of the handling apparatus. Also a support bar positioning device is included which is adapted to hold the support bars used for supporting of the deck plates and removing them from engagement with the vertical stanchions as desired.

Abstract: A scissor lift has a pair of leg assemblies pivotally connected to a base. Relative movement between the legs and the base is opposed by spring assemblies that may be selectively connected to a carriage to vary the bias on the legs. A cam member secured to the leg acts on the carriage to modify the motion between the leg and the carriage to maintain a uniform vertical spring rate.

Abstract: An order picking truck, in particular a high-lift order picking truck, is equipped with a driver's stand (3), a load-picking fork (5) and a wall (11) separating the driver's stand (3) from the load area. The fork (5) is secured on an initial lift device (7, 8, 9, 10) so that it can be moved up and down relative to the driver's stand (3). According to the invention, an additional lift device (17, 18, 20) is provided with which a load on the fork can be raised beyond the highest position of the initial lift device. The fork has two-part fork tines (12, 13) which each have a load picking upper part (13) and a lower part (12) secured to the initial lift device. Each two-part fork tine includes a scissor construction (19) guiding the upper part (13) of the tine parallel with the lower part (12) of the tine.

Abstract: A hoist for roll material surface treatment composes of a lift platform means, a securing means, a hoist means and a transmission means. There are two pairs of spaced bars in the hoist means engagable with two pairs of spaced V-shape blocks in the securing mean allowing the hoist means to load or discharge a roll material supported by the lift platform means. There are rotary shafts in the hoist means for suspending the roll material through the central opening thereof The roll material is compressed between layers at the upper portion and stretched to form loosely gap between layers at the lower portion. The roll material is hoisted and immersed in a processing tank. When rotary shaft and the roll material are driven to rotate by the transmission means, the upper portion of the roll material squeeze out the processing liquid while the lower portion allow processing liquid to sip into the gap and uniformly cover the surface of the roll material. Thus roll material can get a uniform surface treatment.

Abstract: A lifting platform for motor vehicles has at least one scissor-type framework with at least two lower scissor levers that cross each other and two upper scissor levers that cross each other. Either the upper or lower of two pivotably connected scissor levers is configured with a slot shape of a type which opens toward the other scissor lever, and this other scissor lever sinks at least most of the way into this slot when the platform lift is in its lowered position. Instead of a U-shaped slot configuration, the upper or lower of two pivotably connected scissor levers may have an L-shaped profile opening toward the other scissor lever and permitting it to sink into the crook of the L.

Abstract: A device for moving beds includes a moveable frame (2); a lifting mechanism (4) which can cooperate with the underframe of a bed (49); and a steering mechanism (5).

Abstract: A hydraulic rear platform lift for an aircraft loader provides for an increased height by providing a pair of lifting levers actuated by a hydraulic cylinder-piston which extends into cutout space of a forward support frame and mates with the scissor type lifting beams of a forward lifting platform. The lifting mechanism generally consists of a chicken leg lever and tension bar with the actuating force provided by a cylinder--piston connected between the chicken leg lever and the other end of the tension bar. For even greater lifting heights, one end of the tension bar may be placed on the leg of the rear scissor beams with appropriate cutouts being provided in the rear support frame and rear elevatable platform.

Abstract: A dock leveler scissors lift system mounted in a pit having back and side walls. The scissors lift mechanism comprises first and second scissors arms mounted on a base frame, one of the arms pinned to the base for pivotal movement and the other of the arms is free to move relative to said base. Hydraulics are employed to raise scissors lift. The scissors lift mechanism further comprises an upper frame having a generally horizontal deck portion. Retractable pins are used to couple said scissors lift mechanism to the pit in the fully raised position. The a dock leveler deck assembly is pivotally mounted to the generally horizontal deck portion of the scissor lift mechanism, and hydraulics coupled to the scissors lift mechanism raises the deck assembly. The scissors lift mechanism includes lip keepers that in one position retain the leveler lip in the pendent position and in a second position support the outboard end of the leveler deck.

Abstract: An adjustable height wagon capable of being manipulated between an orientation allowing maximum lift and an orientation allowing maximum height. The provision of a lift mechanism below an undercarriage of the wagon increases the stability of the wagon during lifting, and allows a material supporting bed to be drawn into contact with the undercarriage, thereby increasing the stability of both the material supporting bed and the wagon.

Abstract: A device for transporting workpieces to be machined and worked having a base housing or frame which may be moved on wheels and a bed which holds workpieces. The bed is connected with the base frame via a scissors mechanism and can be raised by the scissors mechanism. The scissors mechanism comprises arm braces wherein one arm brace at one end is pivotally connected to the base housing and the other arm brace on one end is pivotally connected to the bed wherein the arm braces are connected to each other at approximately the center thereof via a shaft. The wheels are mounted on the shaft which connect the arm braces and the wheels are pushed out of the base housing as the bed is lowered. The arm braces on the other end opposite the pivotal connections have a free end comprising a sliding foot which slides on the housing floor. In the resting position, the sliding foot engages under a cross rod lying above the housing floor.