Abstract: For supporting the base shelves of adjacent display devices at different angles of tilt, a pitch adapter is provided and comprises a pair of upright pitch adapter plates having top edges which are angularly inclined, vertically disposed center plate means interposed between the pitch adapter plates and secured thereto so that the top edges of said adapter plates are inclined in opposite directions and the upper edge of said center plate means inclined downwardly from each end thereof to a lower level between the ends thereof whereby the top edge of each end of said center plate means coincides approximately with the top edge of one end of different ones of said adapter plates.

Abstract: Two lateral parts (1) interconnected by an upper support (21) are provided in an office furniture unit, with an adjustable table top (22) being arranged between said lateral parts. The adjustment of the table top in the tilt and vertically is accomplished by lateral and posterior pin engagements (35 and/or 32). A bolt (28) which is positioned for reciprocal movement is arranged in the posterior edge (26) of the table top (22). The head (54) of the bolt (28) grips behind a vertical slot (38) of the support (21). Upon disengagement of the table top for its adjustment, it remains connected to the support via the bolt so that it cannot drop out.

Abstract: A combination vanity screen and patient support couch extension. The vanity screen includes two overlapping panels, an upright support panel and a pivoting extension panel. The overlapping edge of the support panel is hinged to the back of the extension panel so that the extension panel may pivot from an upright position in generally coplanar alignment with the support panel to a horizontal position in generally coplanar alignment with the primary patient support couch so as to act as a support couch extension. The upright panel and the extension panel are locked in a coplanar relationship by a door knob which includes a bolt and a striker plate mounted in confronting relationship on the upright panel and the overlapping edge of the extension panel.

Abstract: An adjustable surgical arm rest and instrument platform for supporting the arms and hands of a surgeon during a micro-surgical procedure, in which a supporting platform is provided with vertical and angular adjustment mechanisms which permit rapid adjustment of the platform before, during and after the operation. Two or more platforms may be used, and each platform can be adjusted independently of the other platforms. The angular adjustment of a platform can be performed independently of the vertical adjustment of the platform. Each mechanism is provided with a two part securing feature so that the platforms will not move accidentally. An oxygen/air tube may be attached during local procedures to supply oxygen.

Abstract: A storable table utilizes a sliding T-shaped block member disposed within an elongated T-shaped passageway located within an elongated supporting member. The supporting member is secured to a supporting structure so as to have its passageway disposed in a horizontal position. An L-shaped bracket has one leg secured to the block slideably engaged within the passageway. The other end of the L-shaped block is fitted with a plurality of pin receiving receptacles, disposed outwardly from a shaft secured in the lowermost regions, adjacent the pin receiving receptacles and radially therewithin. A table has a lock secured to an undersurface thereof, such block supporting at least one pin extending outwardly and disposed having its axis parallel to the axis of the rod. Spring means are provided for engaging the pin within the pin-receiving receptacle, such that the table is disposed in any plane desired.

Abstract: The elevation and angle of a desk top are independently adjustable with the exertion of a minimum of manual force, thereby facilitating the use of the desk by handicapped or disabled persons. The desk is provided with a torsion bar to substantially ease elevational adjustments and with a parallel lever arm construction which permits such adjustments without changing the angle of the desk top. The height and tilt angle of the desk top are each securely fixed by means of a pair of serrated, interlocking discs which are spring loaded to permit them to be easily locked or unlocked with only a few turns of an adjustment handle. In addition, frictional washers are utilized in conjunction with this spring loading to substantially maintain the position of the desk top even after the discs are unlocked, further facilitating angular and elevational adjustments by persons of impaired physical strength.

Abstract: A lightweight drafting table having a full-size drafting board of sandwich-type construction, the underside of which is glued to a yoke having three support arms which are disposed approximately parallel to each other and which are connected to a cross member to form a rigid structure for supporting two drawers. The board provides the cover for the drawers when they are closed. Each drawer has a slot formed in each of two sides thereof; the walls of each slot ride on a key which protrudes laterally from one of the support arms. A slight drag between the key and the slot prevents each drawer from opening under the force of gravity alone when the drafting board and the drawer are tilted at an angle of several degrees to the horizontal and the drawer is fully loaded. The yoke is pinned to a pair of vertical support members attached to a four-legged base and to a pair of braces, each of which is also bolted to one of the support members to form a lightweight structure of exceptional strength.

Abstract: A drawing board is mounted on a support column slidably guided by a vertical pedestal structure and is supported by a cable passing over a pulley which is urged upwardly by a gas cylinder to counterbalance the weight of the drawing board. Opposed brake shoes mounted by toggle linkage on an inner support member are biased into engagement with inner surfaces of the support column by springs acting on sliding pivots of the toggle linkage. The normally engaged brakes are releasable by a foot pedal connected by a rod with a sliding yoke on which the sliding pivots are mounted. The rod is connected with the yoke by engaging in a notch in an edge of the yoke. In the event of breakage of the cable or failure of the counterbalancing cylinder, a safety device is actuated to disconnect the rod from the sliding yoke and thereby permit spring actuation of the brakes to prevent the drawing board from falling.

Abstract: A test rack for electronic equipment features an improved mechanism for inclining the test rack table in a smooth and effortless manner even when heavily loaded with equipment. Notches provided on a stopper plate are allowed to mate with a stopper shaft by sliding the stopper plate along a guide portion when the table is set at a desired angle of inclination. The stopper plate is constrained to slide at substantially right angles to the stopper shaft at all times so that the stopper shafts engages squarely with the notches to preclude jamming when the mechanism is operated under a heavy load.

Abstract: A merchandise base, such as a shelf, is mounted on a supporting column by a device having pins or the like received in vertically spaced holes or recesses in the column. The pins are interconnected by a plate, and at least the upper pin has a radially enlarged head. Both pins interfit with a bracket on the base and the enlarged head secures the bracket against movement away from the column.

Abstract: A shelf is supported by at least one shelf support from at least one vertical support having vertically spaced slots therein. The rear edge of each shelf support carries upper and lower extensions which fit into the slots. Abutting surfaces between the upper and lower extensions extend at angles to each other and abut, selectively, the adjacent surface of the vertical support. A downwardly opening notch in the lower edge of each upper extension engages the adjacent portion of its vertical support between the slots therein while the shelf is horizontal. An upstanding projection on the upper edge of each upper extension engages the adjacent portion of its vertical support between the slots therein while the shelf is tilted. Depending projections on the lower extensions abut adjacent portions of the vertical support between the slots therein while the shelf is horizontal and are adapted to move over the portions of the support between the slots upon upward movement of the rear portion of the shelf.

Abstract: Drafting board apparatus features a dual-spring brake to enable the angle of tilt of the drafting board to be selectively altered. Use of oppositely-coiled springs secures the board against movement, while a control linkage enables near-simultaneous release of said springs to enable adjustment of the board.

Abstract: A convertible, foldable stand and portable tray combination is designed to yield a maximum of utility. The stand is built of identical frames assembled in link relationship, the legs having slip-grip feet which are restrained in lateral spread by flexible reins. The stand features a removable footrest and removable braces. Portable trays, having invertible surfaces, handles, rails, and locks, feature open corners which act to facilitate many conversion arrangements on and off the stand. Tray conversions are described for obtaining vertical suspension, surface compartments, game boards, a collapsible tray system, aperture boards, side to side and edge to edge connections, bedroom lapboard, and, on the stand, many table combinations of level, slope, and level plus slope. One or more trays store between upper frame sections of the folded-up stand.

Abstract: Two sets of positive-locking tilt adjustment mechanisms are mounted between a drafting board and a supporting frame therefore. Both sets of locking mechanisms include identical left and right halves having crown gear portions positioned thereon for aligned meshing engagement with each other. Further, the opposing halves of the opposing sets of mechanisms are also aligned. Each half is manually mountable by hand to either the board or frame and a bolt and hand tightenable nut maintain the sets of mechanisms, the board, and the frame in adjustable alignment. The board and frame are made such that loosening a nut on each mechanism automatically separates the halves of each set thereof for providing interference free tilting adjustment of the drafting board on the frame.

Abstract: A folding drafting table having means for adjusting the height and means independent of height adjusting means to secure the table top at a desired angle. In a folding position the table top is substantially parallel to a main frame having a pair of spaced leg portions folded inwardly, the table being relatively compact in the folding position.

Abstract: A treatment table with a tiltable top for veterinary or hospital use. The tiltable top has a tilt locking mechanism that rigidly anchors the top with two pairs of laterally spaced pivot joints that prevent twisting of the table top when in a tilted position. A third pair of laterally spaced pivot joints connects the top to the base.

Abstract: Disclosed is a table-easel which supports a working surface in such a manner that it is readily movable in three directions, height, tilt, and rotation. The height adjustment is achieved by means of a pair of telescopically assembled uprights on a base and support frame which are raised and lowered by a double action turnscrew. The working surface is provided by a tabletop mounted on a cross shaft rotatably supported between the upper ends of the support frame, and tilt is achieved by rotating the cross shaft about its substantially horizontal axis. A locking structure is provided at one end of the cross shaft to lock the shaft in a particular tilt position. To permit rotation of the tabletop about a central axis normal to its surface, a pair of trunnion plates are provided. The tabletop is attached to one of the plates, and the other is attached to the cross shaft.

Abstract: The adhesive bond test apparatus comprises: a U-shaped bracket of aluminum, upported on a table; a tiltable rectangular panel of aluminum pivotally mounted in the U of the bracket for tilting between a horizontal and a vertical position; a sheet adherend made of two Kraft paper layers bonded together with asphalt, attached to one surface of the panel; a plurality of elongated strips adherends each having a specified weight attached to one end, and the other end bonded over a given small area to a portion of the sheet adherend that will be up in vertical position, wherein the weight applies a constant gravity load to the bond during the test. Both shear and a pull tests are disclosed.

Abstract: A cradle top for an X-ray examination table carries a cradle or basket which is rotatable about its lengthwise axis. The cradle top is mounted for movement in the elevational, lengthwise and transverse directions. The cradle top is also connected to a scissors linkage mechanism for tilting angulation. A ball nut damping device prevents oscillatory movement or "bounce" of the patient as he or she is raised and lowered to and from the tilted position.

Abstract: An elevated tray display device comprises a base having upper and lower vertical posts joined in telescoping relation for adjustment of the height and rotational orientation of the upper post and a fastener for affixing the upper post at a selected height and selected rotational orientation. A projecting key-type lug near the top of the post is receivable in a selected one of multiplicity of holes in a tray-mounting plate. The holes are spaced apart along the plate and are in different orientations, thus permitting the plate to be mounted and fastened to the upper end of the post in a selected one of a multiplicity of orientations and locations relative to the post. A tray is mounted on the plate for adjustment of its position to a selected one of an infinite number of locations within spaced-apart limit positions along an axis transverse to the post.

Abstract: A portable writing and reading table assembly includes a pair of spaced-apart stands, each of which includes a generally flat base, an upstanding post secured to the base, and a generally flat writing board, having an elongated holding bar mounted across the lower end thereof and extending outwardly from the front face thereof. Means are provided for rotatably mounting the board between the posts of the stands to permit rotational movement of the board about an axis perpendicular to the longitudinal axes of the posts. Means are also provided for locking the writing board at a desired angle of inclination relative to the axes of the posts.

Abstract: A drafting board and its support structure wherein the board may be easily mounted upon and removed from the support structure by only one person, even though the board may be too bulky or heavy to be lifted in its entirety by that person. On-site assembly and disassembly are therefore simplified and expedited.

Abstract: A hinge mechanism for connecting a surface panel such as a table top to a support frame and operative to guide the panel for pivotal movement about a horizontal axis between a stowed upright attitude adjacent a vertical datum plane and a horizontal operative attitude, the hinge comprising a first link pivoted at a first point to the panel and to the support frame and a second link pivoted to the panel at a point spaced from the first pivot and operatively connected to the first link through a bearing which is slidable in slots, in the first link and in a guide plate, to provide positive triangular guidance and support for the panel, with respect to the frame, in each of the panel's adjusted positions.

Abstract: An adjustable table is provided for use with a hospital bed and which allows a person reclining in the bed to easily change the angle of inclination of the table surface. The planar member is rotatably connected at one end to and extended horizontally outward from a vertical support member by means of frictionally engaged gripping elements. Lifting up on the free end of the planar member disengages the gripping elements whereby the planar member can thereafter be freely tilted or rotated about its longitudinal axis to a selected angle of inclination. Lowering the free end of the planar member to its original position re-engages the gripping elements to fix the planar member at the selected angle of inclination.

Abstract: A novel shelf structure for a display rack. The shelf structure is movable in its support plane between an extended position and a retracted position to vary the shelf area exposed for merchandise support. The shelf structure also is positionable in either a horizontal display position or a rearward tilt display position as selected by the user of the display rack. The shelf itself includes a front section and a rear section, the front section being telescopible into and out of the rear section to establish the desired merchandise support area. Both shelf sections are carried on a pair of arms pivotally connected to opposed side frames of the display rack, the pivot axis of the arms being adjacent the front face of the display rack, to permit positioning of the shelf in either the horizontal or rearward tilt attitudes for merchandise display.

Abstract: A stand for a knitting machine having an upper substantially horizontal main support frame with downwardly extending legs for supporting the stand at a predetermined height above ground level and releasably attached to the main support frame, or pivotally attached thereto to enable them to be folded thereagainst. The knitting machine is clamped to a support section which is pivotally supported on the main support frame for rotation about a substantially horizontal axis for tilting the machine from one operating position to another. The support section consists of two parts extending from either end of the main support frame and interconnected by a common pivot axle with means to clamp the axle in any desired position.

Abstract: An adjustable lightweight hassock comprising a cushion-like upper seat portion pivotally mounted on a unitary tubular base for angular displacement. The upper seat portion is provided with a movable brace element having a multiplicity of teeth for releasably retaining the seat in a tilted position and including an elongated slot so that when the seat is lowered to a horizontal position, the brace element will become horizontally disposed in an inconspicuous position beneath the seat.

Abstract: An optical system for a duplicator machine comprising a table on which a pair of mirrors are mounted, the pair of mirrors jointly reflecting light from a document 180.degree. to a photosensitive surface. The table is supported for easy adjustment on a pair of eccentric cams mounted adjacent the ends thereof, the table being coupled to the cams by means of rotatable adjusting screws for establishing an initial level of the table.