Abstract: An accessory mounting system configured to be supported by a furniture item, the accessory mounting system comprises a sleeve and a support member. The sleeve includes a body that is movable between a closed position and an open position. The body has a periphery partially surrounding a longitudinal axis and terminating at radial ends. The body has a pair of first features each positioned adjacent one of the radial ends. The support member includes a support portion and a sleeve engaging portion having a pair of second features configured to engage the pair of first features. In the closed position, a gap having a first size is formed between the pair of first features, and the pair of second features engages the pair of first features to hold the body in the closed position. In the open position, the gap has a second size larger than the first size.

Abstract: The invention relates to event furniture comprising at least one table and/or at least one chair as an event furniture component (100, 200, 250, 300, 350), wherein at least one table (11, 250), a table part (120, 300, 350) of the at least one table (11), the at least one chair (110, 200), and/or a combination of the above-mentioned event furniture components have means for carrying out an individual machine-controlled movement.

Abstract: A support attaches a mechanism to a patient table having a patient supporting surface and a first rail and a second rail. The support comprising: a base; a first engagement member; a second engagement member; and a single engagement mechanism moving the first engagement member and the second engagement member from a loading position to a secured position securing the base to the first rail and the second rail.

Abstract: An apparatus for testing corrosion can comprise a frame and a rack having a generally planar face, a first edge, and a second edge. The rack can be pivotably coupled to the frame. The apparatus can be configured for selectively orienting the rack to position the first edge of the rack with a select vertical offset with respect to the second edge of the rack.

Abstract: An arm-based sit-stand workstation is disclosed in which a height-position of the attached workstation portion is adjustable via adjustment of the position of the articulating arm. The workstation comprises a release mechanism that allows the workstation to be locked in a non-adjustable height configuration and also be placed in an unlocked configuration in which a height position of the workstation portion can be adjusted without constant user actuation of the release mechanism during adjustment.

Abstract: A steam ironing and/or smoothing appliance including an ironing board against which a garment to be ironed can be placed for a steam treatment, the ironing board being mounted with the ability to pivot by a hinge device enabling the ironing board to be immobilized in various tilted positions, the hinge device including a first part which is mobile in rotation in relation to a second part, the first part including at least one notch in which is engaged at least one locking element carried by the second part in order to prevent the hinge device from rotating, wherein the second part is mobile in translation in relation to the first part according to a course and a direction enabling the locking element to engage and disengage in the notch.

Abstract: A workstation assembly configured to ergonomically, comfortably seat and provide workspace for a user, comprising a chair having a base portion on which a user sits, and at least one armrest; and a desk comprising a desk frame, a sliding assembly mounted on a desk frame, and a desktop mounted on a sliding assembly, wherein the desk is configured such that the desktop can be in a compact position with respect to the desk frame, or can be moved from the compact position to an extended position with respect to the desk frame, wherein, in the extended position, a distal portion of the desktop is positioned on the at least one arm rest.

Abstract: A drying rack assembly having a frame that defines a window. A drying support structure with drying rods is provided and mounted in the window by pivot brackets. At least one strap is secured between the frame and drying support structure. The interior sides of the frame include slots that define a top resting position and a bottom resting position with a slidable pole being positioned in the slots. The pole extends across the window with the strap extending behind the pole such that when the pole is moved into the top or bottom resting position, the strap configures the drying rack structure into a full extension position or a partial extension position away from the frame support structure.

Abstract: A supporting bracket is suitable for standing on a working platform and adapted to hold an electronic device having a screen and provide illumination. The supporting bracket includes a base, a supporting arm apparatus, and a lighting device. The base is suitable for being fixed to the working platform. The supporting arm apparatus has a first segment and a second segment. One end portion of the first segment is connected to the base. The first segment is able to rotate relative to the base. One end portion of the second segment is connected to the other end portion of the first segment. The other end portion of the second segment serves to hold the electronic device. The second segment is able to rotate relative to the first segment. The lighting device is fixed to the supporting arm apparatus to provide illumination.

Abstract: Embodiments include an apparatus for positioning items such as an electronic display, a keyboard, and/or a work surface. The apparatus can be attached proximate an edge of a generally planar support member to provide a multi-position workstation. In some cases the apparatus includes a display mount coupled to a support column and configured to support an electronic display and a keyboard. The support column may be movable with respect to support member between a sitting position and a standing position. Methods for positioning an electronic display and a keyboard are also included.

Abstract: A surgical table having a table top for receiving a patient thereon, a support for supporting the table top, two rails connected to the table top one on each side in the direction of the longitudinal axis of the table top, and at least one slide means on each side of the support for slidingly receiving the rail along the longitudinal axis. The rails are connected to the table top at two connection points on each side of the table top or is connected to the table top at one connection point only and the other end of the table top lies on a pin that may be joined in the corresponding connection point on each side of the table top.

Abstract: The disclosed article of furniture comprises a table with an adjustable base, a support, and a worksurface. The table can be deployed in a generally upright position for use and can be folded into a compact form for storage. The worksurface is mounted on an arm coupled to the base and is rotatable relative to the arm. The arm may be folded into the support. The support may be folded into the base. The worksurface may fit within a cavity between the legs of the base when the table is in the stowed position. The worksurface may have a height adjustment mechanism for the worksurface. The height adjustment mechanism may be configured to adjust to a predetermined “home” position when the support is folded into the base for the stowing position.

Abstract: A sterilizable surgical accessory table includes a pair of independently movable tabletops supported by a base. The front tabletop is supported by a carriage which allows the position of the front tabletop to be adjusted fore and aft, while maintaining it in a horizontal plane. The rear tabletop cannot move fore and aft, but it can be tilted about a transverse horizontal axis. The rear tabletop is at all times well above the horizontal plane of the front tabletop. Both tabletops are normally locked in position, but the setting of each can be adjusted by depressing one of two pedals at the bottom of the base. The tabletops can be removed easily for cleaning and sterilization.

Abstract: A portable workstation for an exercise machine is described, the workstation comprising a desktop resting on a handlebar system of an exercise machine. The desktop comprises two or more pairs of support strap slots positioned over corresponding portions of the handlebar system. Each pair of the support strap slots are configured to receive a support strap which passes through each pair of support strap slots and around the corresponding portions of the handlebar system. The desktop comprises a support structure coupled underneath the desktop, wherein the support structure absorbs vibrations from the handlebar system and adjusts the height and angle of the desktop relative to the handlebar system. The portable workstation further comprises a pair of support brackets positioned at the back of the desktop, wherein the support brackets support a device above the desktop.

Abstract: A pallet rack and method for use of same are disclosed. Three panel frames interconnected by two parallel cross members define two lower pallet receiving areas and two upper pallet receiving areas. A catch tray is disposed beneath the two upper pallet receiving areas to catch and redirect fluid and debris to prevent cross-contamination between pallets. The catch tray includes a primary tray and a slidable dependent tray extendably coupled to the primary tray. The slidable dependent tray extends from a retracted position within the primary tray to an extended position having a general decline from the first panel frame to the second panel frame to furnish a slanted surface therebetween. Retraction of the dependent tray provides clearance for fork lift tines to access the rear upper pallet receiving area.

Abstract: An adjustable projector stand is provided for supporting a video or still image projector. The projector stand is adjustable in pitch and tilt for positioning and leveling images projected on a screen in a manner that compensates for uneven support structures, such as tilted tables and poorly placed screens. The device may be powered manually by the user or by battery through the use of a motor. The projector stand generally consists of a platform with two legs, each of which is formed by two pivotally joined rods. Each leg is in direct rotational communication with a threaded rod disposed within the platform. Each rod is in turn coupled to a means for rotation, which may consist of a manually rotated knob or a battery powered motor. The raising and lowering of one leg may be performed independent of the other in order to allow the projector stand to be leveled on an uneven surface.

Abstract: Computerized school desk for education and many other applications comprising a rigid structure to support a transparent tabletop (1) that has the functionality of a touch-operated screen under which is placed a computer flat panel display (3) attached to said screen, said apparatus being provided with a mechanism for tilting the tabletop from a position substantially horizontal and a position approximately vertical or any intermediate position. The referred mechanism consists of a pair of couplings that slide along two guides substantially horizontal and at least one connecting rod rotationally coupled to an intermediate point of the said tabletop between the front and rear borders of said tabletop and to other point fixed in the structure of the table, substantially coplanar with side guides.

Abstract: A tilting table device includes a first rotary member which is rotated by a rotation amount equivalent to that of a tilt shaft when rotation of the tilt shaft is transmitted; a second rotary member which has an axis parallel to that of the first rotary member and is rotated by a rotation amount equivalent to or substantially equivalent to that of the first rotary member in a direction opposite to that of the first rotary member when the rotation of the first rotary member is transmitted; two retaining members respectively provided at the first and second rotary members, in which when the center of gravity of a table is located at an uppermost position or a lowermost position, the retaining members are located on or near a line connecting rotation centers of the first and second rotary members, the retaining members are located at equivalent or substantially equivalent distances respectively from the rotation centers, both the retaining members are provided inside or outside the two rotation centers; and an ur

Abstract: A computer workstation includes a worksurface horizontally moveable from a first worksurface position to a second worksurface position. At least a portion of the worksurface rotates about a horizontal axis as the worksurface is moved from the first worksurface position to the second worksurface position. A monitor support is moveable horizontally and vertically and moveably coupled to the worksurface. The worksurface or the monitor support is moveable in response to a movement of the other of the worksurface and the monitor support.

Abstract: A portable, adjustable support system for large scale, flat monitors and associated hardware. The portable support system is fully self-contained and is fully adjustable so as to allow a user to interact with the monitor from a range of positions including standing, sitting, or lying down through actuated variation of the height and/or angle of the monitor.

Abstract: A patient table including an elongated table assembly extending between opposing ends, an elongated pallet mounted on the table assembly for linear motion between the opposing ends of the table assembly, and an elongated horizontal drive apparatus including a rotary motor, and an elongated rotary-to-linear motion converting mechanism extending between the opposing ends of the table assembly and substantially positioned at a midpoint between opposing sides of the table assembly. The rotary-to-linear motion converting mechanism connects the rotary motor to the pallet such that operation of the motor causes linear motion of the pallet on the table assembly. Among other feature and advantages, the centrally located rotary-to-linear motion converting mechanism has been found to provide smooth movement of the pallet on the table assembly.

Abstract: Table (10) with variable configuration comprising at least a frame (11) and a movement assembly (12), associated with said frame (11), for a main plane (13) and a service plane (14); such movement assembly (12) comprises two mechanisms (18, 19): a first mechanism (18) that acts on the main plane (13) to take it from a lowered position to a raised position, and a second mechanism (19) that acts on the service plane (14) to take it below the main plane (13) in such lowered position and adjacent to the main plane (13) in such raised position.

Abstract: A portable adjustable work station including a base and a substantially planar work platform disposed vertically above the base with a support assembly extending between the base and proximate the work platform for support thereof. The support assembly includes structure for vertically adjusting the vertical spacing of the work platform above the base, and further includes an upper end. There is interposed between the upper end of the support assembly and the work platform structure for interconnecting the upper end of the support assembly to the work platform and defining an axis for rotation of the plane of the work platform in either direction from the horizontal between first and second limits. The work platform is further mounted for lateral translation thereof within its plane, irrespective of the attitude of the work platform with respect to the horizontal.

Abstract: A pull-out keyboard tray. The pull-out keyboard tray includes an adjustable keyboard platform, removable storage compartments, and keyboard wiring protrusions. The keyboard is slightly mounted on drawer slides having multiple position detents, and is adapted for mounting under a desk top surface and the like. The keyboard further includes a removable palmrest, as well as slide shrouds for shrouding the drawer slides.

Abstract: This invention is an adaptable computer stand designed to support a laptop computer or keyboard over a user's lap while sitting in a chair or bed. The stand includes a wide, low profile base designed to fit under a living room chair commonly found in a home. Attached perpendicularly to the base is a vertically aligned, fixed pole. Attached to the upper end of the fixed pole is an adjustable, L-shaped extension pole designed to be selectively raised or lowered on the fixed pole, rotate, and then lock in a desired position. Attached to the upper end of the extension pole is a length-adjustable, rotating extension arm. The stand also includes a planar support member used to support a keyboard or laptop computer. Attached to the bottom surface of the support member is a locking universal joint, which, during assembly, is connected to the distal end of the extension arm. The universal joint enables the support member to tilt and rotate as desired.

Abstract: An object may be adjustably mounted with respect to a base on one or more plastic straps which extend between the base and the object. The object may be translated with respect to the straps which may be fixed so as to vary the extension of the strap or straps into the object. In this way, the position of the object may be rotationally adjusted with respect to the base and translated towards and away form the base as well. This arrangement may be particularly suitable for mounting flat screen displays for computer systems in a low profile, low cost arrangement that allows multiple degrees of freedom of movement.

Abstract: Vertical suspension legs are clamped to a margin of a desk top. The suspension legs support a tray at a plurality of selectable vertical levels. There is a connection station on each vertical leg corresponding to each of the vertical levels. The tray has engagement devices for engaging the connection stations corresponding to any selected vertical level. Each connection station can be a plurality of detents which mate with a corresponding plurality of tangs projecting from a side of the tray. The plurality of tangs engaging a corresponding plurality of detents prevents rotation of the tray about the connection points. The stations can also be laterally open horizontal open slots defined by the vertical legs which mate with side rails projecting from the tray. Slidingly extending through the vertical legs are vertical shanks, the top ends of which are connected to an elongated crossbar.

Abstract: A tilting platform that elevates and tilts an object while maintaining a center of gravity of the object about a center line of the platform. The platform includes a surface upon which the object is fastened, and a plurality of slideable sections each having a forward end coupled to a forward end of the surface. The slideable sections are retractable. The tilting plaform also includes a base coupled to a forward end of each of the plurality of slideable sections, where the plurality of slideable sections are retractable into the base, an actuator that retracts and expands the plurality of the slideable sections uniformly along the direction of the base, and the vertical linkage, coupled to the base, and coupled to the surface to cause the surface to tilt as the plurality of slideable sections are retracted by the actuator.

Abstract: A linkage system (1) for connecting a first element (2) and a second element (3) includes a linkage arm (4) respectively connected at a first end and a second end (5, 6) respectively to the first and second elements. Arm (4) includes at end (5) two spaced apart engagement formations, pin (7) and pin (8). These pins slidably inter-engage on the first element a guide slot (9) and a control slot (10) respectively. Relative movement between pins (7, 8) and the guide and control slot (9, 10) respectively provides predetermined non-arcuate relative movement between elements (2, 3).

Abstract: A movable table assembly for use in a recreational vehicle or the like and comprising a table blade and a mounting assembly therefor enabling said table blade to be extended and retracted and to be pivoted and rotated about vertical and horizontal axes as desired in order to bring said table blade from a stored position to any one of a plurality of desired positions for use and vice versa.

Abstract: An adjustable monitor support assembly is provided which incorporates a shelf member, side supports and slide plates between each side support and the shelf member. Elongated slots are provided in the side supports and in the slide plates with those in the slide plates being perpendicular to those in the side supports, and adjacent ones thereof are interconnected by a key. The front of the shelf member is pivotally connected to each slide plate. The shelf member is thus vertically and horizontally positionable and tiltably adjustable relative to the side supports, and the shelf member is spatially fixable by an adjustable clamp.

Abstract: A footrest has a platform with an upper surface for supporting a user's feet above a ground surface. The footrest is supported by a base portion on the ground surface. An intermediate member is rotatably coupled to the base portion and to the platform for relative rotation about first and second axes, respectively. The first and second axes are offset from each other so that selective rotations about said first and second axes provide for height and orientation adjustment of the platform relative to the ground surface.

Abstract: A tilt table is hinged along an unload side and is spring urged to swing up towards the unload side to cause parts on the table to shift against an endwall. Pin and slot connections between fixed side plates and gussets on the table structure cause a roller supported platform to which the table is hinged to shift away from the unload side, carrying the tilt table hinged side away so that as the tilt table swings up, clearance at the unload side with the upper edge of the endwall is maintained to avoid impingement into the workspace which would otherwise occur.

Abstract: A tilting and sliding surface for use with a table or other work surface is received within an opening or space defined by the stationary surface of the table or work surface. A combination tilting and sliding mechanism mounts the movable surface to the stationary surface. The tilting and sliding mechanism includes a fixed bracket assembly mounted to the stationary surface, and a movable bracket assembly pivotably interconnected with the fixed bracket assembly and to which the movable surface is mounted. A sliding mechanism is interposed between the movable bracket assembly and the movable surface. A tilt lock mechanism selectively clamps the movable bracket assembly to the fixed bracket assembly in a desired pivoting position according to user requirements. The sliding mechanism includes lateral guide members fitted with bearings, which are received within channel structure defined by a slide member mounted to the underside of the movable surface.

Abstract: A patient couch for an X-ray diagnosis comprises a base portion to be fixed to a floor of an X-ray diagnosis room and a movable portion mounted to the base portion to be movable with respect to the base portion and having a table top on which a patient lies. A tilting mechanism is secured to the base portion for vertically tilting the movable portion with respect to the base portion. The base portion and the tilting mechanism each has a width, in a width direction of the table top, smaller than a width of the table top and disposed below the movable portion along a longitudinal direction of the table top at a portion apart from a central axis thereof in the longitudinal direction so as to provide a space between a substantial portion of the movable portion and the floor. The tilting mechanism is tilted about a central axis, which is positioned below a horizontal level of the table top, by an angle more than 85.degree.

Abstract: A modular work station includes a dual column construction with a separately adjustable work surface supported on each column. Each of the columns utilizes a tubular telescoping construction and can provide as many as three individual modes of adjustable movement to the work surface, including lift, tilt, and horizontal back and forth movements. Supporting columns can be selected with varying functions to provide extremely broad versatility. The lift and tilt functions are preferably provided by motor driven linear actuators mounted within the telescoping column with appropriate controls to prevent contact between adjacent work surfaces when one or both of the surfaces is also provided with back and forth sliding movement.

Abstract: A liquid phase composition for topical application to wood or other articles serves as a sealant and protective finish. The composition comprises paraffin wax dispersed in mineral oil and an extender, preferably, wood alcohol or ethanol, and optionally, relatively small amounts of additives including colorants, fragrance components, UV light absorbers, and so on. Thickeners and a solubilizing agent such as a volatile, low viscosity silicone may be added to produce a creamy form. The liquid composition is topically applied to wood or other articles by means of a fine wiping cloth or a fine bristle brush. Little or no buffing is required. Once applied, the composition imparts a non-greasy, rich luster to the surface of an article (e.g. wood furniture).

Abstract: A device for supporting a keyboard apparatus having a top surface generally defined by the top surfaces of the individual keys, includes a frame for mounting the device to a support structure. The frame includes a platform for supporting a keyboard apparatus thereon which is inclined between first and second portions of the frame. A forearm resting member is provided on the keyboard support platform for resting the forearm of an operator while gaining access to the keyboard. The forearm resting member includes a support surface which is substantially coplanar with the top surface of the keyboard apparatus when the keyboard apparatus is positioned on the keyboard support platform.

Abstract: A table with a movable working surface is supported on a table frame with legs. A running rail arrangement is provided on the table frame and cooperates in a form fitting relationship with a pair of edge rails extending from the working surface. The running rail arrangement is divided into two running rail elements. A first running rail element is rigidly fixed to the table frame. A second running rail element is rotatably mounted to the table frame at a location adjacent to the first running rail element. The first running rail element has a sloped bearing surface on which the second running rail element is supported when the working surface is in a horizontal position. Each edge rail includes a holding and sliding element for supporting the second rail running element. During usage of the work surface, the holding and sliding element is located either under the first running rail element or is supported on the sloped bearing surface of the first running rail element.

Abstract: The invention relates to a table with a table frame and a tabletop, which is settable in both height and inclination by a control device. Varying the height and inclination of the tabletop with a simple control device and a support frame is accomplished by providing that the control device has two support devices. The two support devices are pivotally attached to the support frame in the upper region of the middle cross member of the support frame about transversely extending pivot shafts. The support devices on the underside of the tabletop are supported on the tabletop about transversely extending pivot shafts, but are guided adjustably within the depth of the tabletop. The control device selectively raises the support devices individually or in common upward in the direction of the tabletop or lowers them individually or in common downward in the direction of the support frame, in the course of which platform-shaped pivot shafts of the support devices move toward or away from one another.

Abstract: An improved drawer assembly which may be secured underneath a desk top or the like, the drawer assembly being capable of supporting a computer keyboard or the like for movement between storage and working locations and which will permit the keyboard to be in various positions of vertical and tilting adjustment, which positions of adjustment will be maintained as the keyboard drawer is moved between storage and working positions.

Abstract: A flat bed vehicle such as a tilt bed car carrier vehicle has side rails which may be positionable either in a raised position disposed above the bed platform and a lowered stowed position wherein the tops of the rails are disposed coextensive with the platform. The caps or tops of the rails are supported on posts and the ends of posts remote from the caps have cam followers which are positioned within respective cam tracks extending transversely beneath the bed floor. The cam tracks are configured so that the followers may be moved between first and second ends of the cam tracks selectively. At one end of each track the follower is located such that the respective post may be either in the upstanding operative position at the side of the bed, and at the other end of the track the follower is located such that the post is in the stowed position extending transversely beneath the floor of the bed with the cap of the rail positioned on a shelf of a longitudinally extending bracket at the edge of the side.

Abstract: A housing adapted to be mounted beneath the top of a table and a shelf sized to fit substantially within the housing are operatively connected by a pair of telescoping rails which guide movement of the shelf between a retracted position in which the shelf is substantially within the housing and an extended position in which the shelf has a substantial portion thereof outside the housing. The rails pivot about an axis to change the height of the shelf with respect to the top of the table and the entire assembly includes a mechanism for securing the shelf in the extended position. The housing includes a vertically stepped slot in which a pin secured to the rails is movable to hold the shelf at predetermined heights with respect to the top of the table corresponding to the steps of the vertically stepped slot.

Abstract: A workstation for computer-aided design comprises an L-shaped main support frame having a monitor support panel which is both tiltable and slidable fore and aft. Connected between the horizontal elements of the L-shaped support frame is a secondary support frame carrying a digitizer support and a keyboard support. The keyboard support is forward and below the level of the digitizer support. The digitizer support is slidable fore and aft on the secondary frame, and the secondary frame itself is slidable fore and aft, and forwardly tiltable, relative to the main support frame. The main support frame rests on nylon feet, which are slidable on a table top. A centrally located foam pad is connected to the main support frame through a swivel mechanism, and is in compression and in frictional engagement with the table top, so that the workstation can be swivelled about a vertical axis, but translational movement is prevented.

Abstract: Mechanisms are disclosed for use in supporting keyboards in desired adjusted positions relative to a CRT unit supporting table or work station. A first form of the mechanism provides a retracted position for a keyboard, wherein it is disposed beneath a table top and recessed rearwardly of a front end thereof. Additional forms of the mechanism are adapted for use with work stations of the type having a generally U-shaped work surface, wherein the keyboard is intended to be supported on a shelf arranged between the opposite end, forwardly protruding surface areas of such work surface.

Abstract: A display workstation comprising a display monitor including an image display device mounted on a base by a mechanism permitting adjustment of the angle of tilt of the image display device, the tilt mechanism including a pair of support members upstanding from the base and providing a gap between the display device and the base between the support members. A cable connector housing is releasably retained in the gap between the support members. Individual cables from peripheral input devices extend to the front of and are releasably coupled to the housing, and a further cable is also coupled to the housing and extends from the rear thereof to a separate display control unit. The housing contains circuits providing electrical connection between the peripheral device cables and the control unit cable.

Abstract: An electrical apparatus frame mounting a number of electrical assemblies. Access to said electrical assemblies is provided for maintenance purposes, while the assemblies are in operation. Access is provided by a slide out and hinge down arrangement. The electrical assemblies rest on support guides which may be inclined at an angle to the horizontal to provide convection cooling.

Abstract: A book holder includes a shelf for supporting literature on the upper surface thereof is attached to a mounting member by means of a bracket. The bracket retains the shelf capable in a manner to be switched from a use position whereat the shelf extends obliquely and forwardly from the mounting member to a non-use position whereat the shelf is housed under the mounting member. The bracket may be mounted on the mounting subject through a swivel mechanism, whereby the direction of orientation of the shelf may be changed when in the use position.

Abstract: A tilting table includes a table top attached to an upper U-shaped bracket. A lower U-shaped bracket is rotatively attached by a bearing to a base. The lower U-shaped bracket includes a pair of opposed side, substantially horizontal slots and a pair of opposed side angle slots. The angle slots include a plurality of notches. Pins are slidably received in the slots, and are carried by the upper bracket for supporting the table top. The pins are selectively positioned in the notches of the angle slots, while the pins slidably move in the substantially horizontal slots for selectively inclining the table top.

Abstract: An adjustable, split top table for accommodating word processing equipment and the like comprises a base support, a main frame connected to the base support and two independently movable table tops (front and rear) adjustably secured to the main frame. A first lead screw is mounted between the main frame and the front table top so as to slope forward at an acute angle to the vertical. A second lead screw is mounted between the main frame and a front section of the rear table top and parallel to the first lead screw. A third lead screw is pivotally mounted between the main frame and a middle section of the rear table top. Drive means are coupled to the lead screws to independently raise and lower the first table top, raise and lower the rear table top and tilt the rear table top.