Abstract: A plurality of horizontal shelves extend outwardly from a vertical supporting wall. Each of the shelves is formed on an arm structure having a pair of horizontally spaced arms connected by a cross member and a rack slidably resting on the arms across the width of the shelf lengthwise from arm to arm. The rack has a front section and a back section articulatingly interconnected, and slidable on the arms from a forward position wherein the front and back sections of the rack rest upon the arm and a rearward position wherein the front section only of the rack rests upon the arm and the back section of the rack extends perpendicularly therefrom and abuts against the wall.

Abstract: An improved mounting stage of the type used for the detection of laser beams is disclosed. A stage center block is mounted on each of two opposite sides by a pair of spaced ball bearing tracks which provide stability as well as simplicity. The use of the spaced ball bearing pairs in conjunction with an adjustment screw which also provides support eliminates extraneous stabilization components and permits maximization of the area of the center block laser transmission hole.

Abstract: A swivel mount support apparatus for supporting a power tool or the like comprising a base plate which may be secured to a workbench or a wall in the vicinity of a work area and a support plate on which the tool may be secured. First and second elongated generally S-shaped members are pivotably coupled to both the base plate and the support plate such that the support plate carrying the tool may be pivoted about the base plate in order to position the tool in an out-of-the-way location for storage or to a convenient work location for use.

Abstract: A work surface is mounted on a pair of brackets which are releasably mounted on and project outwardly in cantilevered relationship from a panel adjacent the opposite ends thereof. The work surface, in each end rail thereof, mounts a manually-actuated latching lever which is biased down into latching engagement with the respective bracket. The latching lever prevents the work surface from moving away from the panel and from being lifted upwardly adjacent its rear edge. The latching lever has the end thereof accessible from beneath the rear edge of the work surface so as to be manually moved upwardly to release the work surface from the bracket, whereupon the work surface can be slidably displaced outwardly away from the panel through a limited extent. When the work surface is manually slidably moved forwardly toward the panel, the latching lever automatically re-engages its respective bracket.

Abstract: An extendable shelf for a display rack permits the shelf to be pulled out to permit stocking and product rotation and permits it to be used in different sizes. A wire shelf is formed of inhingedly connected sections with their outermost and innermost ends connected to sheet metal side supports. The side supports are also constructed in sections which are telescopically mounted so that the side supports may be pulled out or pushed in causing the sections of the wire shelving to lie flat or hinge up to provide different depths of shelf. An upstanding member contacts product on the shelf to pull the product forward when the shelf is pulled out, thus allowing restocking of fresh product at the rear of the shelf.

Abstract: A tabletop (32) is releasably attached to the armrest structure (4) of a wheelchair (2) by means of two mounting tubes (52). Each tube (52) has a rubber coated rear end portion (56) that is received into and frictionally engages an axial passageway (10) in a longitudinally extending upper horizontal frame member (6) of structure (4). Tube (52) extends along the lower surface (34) of tabletop (32) between the vertical flanges (46) of a pair of angle irons (40) secured to surface (34). A pair of longitudinally spaced bolts (76) extend through aligned openings (48,54) in flanges (46) and tube (52). Wing nuts (82) secure tube (52) against lateral movement along bolts (76) but may be loosened to permit lateral adjustment of the distance between tubes (52). The rear end (56) of the tube (52) may be replaced by a clamp (60) to engage an armrest structure (4') lacking an open axial passageway. Tabletop (32) may be replaced by a hinged desk top arrangement (32',88).

Abstract: An improved serving tray according to the teachings of the present invention is disclosed as including a window abutting element which is laterally positionable allowing a window abutting edge to abut with and fulcrum on the outside surface of the window to compensate for variations of the angle of the window to allow the serving platform of the serving tray to be horizontal. The window abutting element is laterally positionable by slideably mounting it to the bottom surface of the serving platform. In its most preferred form, the window abutting element is slideably mounted by arms extending generally parallel to and spaced from the rear legs of the serving tray. The window abutting element is held in one of multiple positions by teeth formed on the bottom surface of the serving platform and formed on the window abutting element.

Abstract: An apparatus positions a flat, rectangular object, such as a photomask, on a stage below the objective of a microscope in the XY plane with provision for rotation in the XY plane to correct for a theta shift. A pair of rails are mounted parallel on the stage and may be adjustably mounted to hold different sizes of flat objects therebetween. The members for locating the object in an exact X and Y location on the rails and for theta shifting the object are preferably mounted on the respective rails and are movable therewith to accommodate various sizes of objects. An inexpensive theta shift is achieved by inexpensive stops and pivot mounted on one rail and a spring biased plunger and an adjustable member on the other rail.

Abstract: An extendable shelf for a display rack permits the shelf to be pulled out to permit stocking and product rotation and permits it to be used in different sizes. A wire shelf is formed of hingedly connected sections with their sides connected to telescoping sheet metal side support brackets. The side support brackets are constructed and mounted so that they may be positioned to extend vertically either above or below plane of the wire shelving to selectively form side edges of the shelf. The rearmost section of the shelf when pivoted out of the plane of the shelf and held by a detent may contact product on the shelf to pull the product forward when the shelf is pulled out. This will allow restocking of fresh product at the rearmost section of the shelf when it is again pivoted down to the plane of the shelf.

Abstract: For use as a component of a display stand, an extendible shelf comprises a pair of elongated primary bracket elements each arranged for mounting at one end thereof on suitable supporting means such as a pair of upright elements forming components of a display stand, a pair of secondary bracket elements telescopically mounted respectively on said primary bracket elements, a main shelf element supported at its ends by the secondary bracket elements, and a collapsible shelf element including at least two hingedly connected parts one of which is hingedly connected with the rear of said main shelf element and the other of which is hingedly connected with said primary elements respectively, said collapsible shelf element being in collapsed condition when said main shelf element is in its retracted position and being effective to form a supplementary shelf at the rear of said main shelf element when said main shelf element and said secondary bracket elements are in their extended positions.

Abstract: A hydrostatic pressure XY table comprising first and second sliding tables mounted on a bed. The two sliding tables are driven perpendicularly to each other by separate motors through a first lead screw supported on the bed and a second lead screw supported on the first sliding table. The bed has a first trapezoidal groove and the first sliding table has a second trapezoidal groove running perpendicular to the first trapezoidal groove. The first sliding table is engaged with the first trapezoidal groove and the second sliding table is engaged with the second trapezoidal groove. Four hydrostatic pressure guides are provided in the bed, to engage with engaging surfaces of the first sliding table. Four hydrostatic pressure guides are also provided in the first sliding table to engage with engaging surfaces of the second sliding table. A plurality of fluid pressure lines are provided for supplying hydrostatic pressure to the engaging surfaces of the first and second sliding tables.

Abstract: Air bearing pads for supporting a one-axis table in a granite bridge positioning apparatus on a thin film of air include machine-thinned sections for providing resilience to the pads in order to permit flexing sufficient to accommodate surface irregularities on the supporting surface. A single air pressure regulator provides a source of pressurized air to flow-control devices of a plurality of air bearing pads supporting a one-axis table. The individual flow-control devices adjust the flow of air to their respective air bearing pads to individually adjust the lift of the pads.

Abstract: A bath-tub tray has arranged on the inner surfaces of its longitudinally extending walls (3,4) grooves (e.g. 11,12) intended to receive a clamping plate (19), having a lower part (21) arranged to be inserted through a slot (17) in the bottom (2) of the tray and to clamp against the inner surface of the bath-tub. Preferably, both end portions of the tray (1) are provided with grooves, slots and clamping plates, although it is possible to provide one end of the tray with a permanently fixed, resilient plate which projects from the bottom (2) of the tray.

Abstract: An improved shelf structure for use in a display rack having interconnected corner posts, comprising opposed, spaced shelf support arms connected by a plurality of telescoping cross members adapted to telescope between an extended and retracted position for varying the planar surface area of the shelf structure. An article support, carried by the cross members, includes top and bottom article engaging surfaces each having a different coefficient of friction and being adapted to contact articles placed on the shelf structure. Latch elements, releasably mounted to the shelf support arms, are adapted to mount the shelf structure to virtually all corner post designs of current display racks and to dispose the shelf structure in the desired angular attitude from front to rear.

Abstract: A sledge or equivalent transporting base, consisting of a frame (1) and of thereinunder mounted travelling members such as runners (2), with reference to which the frame is movable in the direction longitudinal to the sledge. To the runner (2) has been pivotally attached an arc-shaped rolling member (3) with the center-point of its radius at the pivotal point and which is free to roll along an opposed counterface (5) on the frame (1). With the aid of the invention, sledge runners which have frozen fast to snow or ice can be easily freed by first backing up so that the load rolls into its rear position, whereafter the sledge is started, whereby with the aid of the load's mass the runners are jerked free from frozen-on snow and ice.

Abstract: This disclosure relates to improvements in a dental treatment chair assembly including a unit table having various instruments attached thereto in combination with a unit arm mechanism. The assembly is so constructed that the unit arm mechanism is made slidable in the direction of the mechanism crossing (preferably at right angles with) the body axis of the chair. Such construction makes it possible to meet the convenience of both a doctor and a nurse in their operation of the instruments in dental treatment.

Abstract: A connecting mechanism of an XY table is provided with a first table movable in one direction, a second table movable relative to the first table in a direction perpendicular thereto and having a guide rail parallel to the direction of movement of the first table, an auxiliary slide movable parallel to the direction of movement of the second table, a first support shaft fixed to the auxiliary slide, a second support shaft rotatably supported by the auxiliary slide and having an eccentric portion, a first antifriction bearing supported by the first support shaft, a second antifriction bearing supported by the eccentric portion of the second support shaft, and biasing means for biasing the second support shaft in a rotational direction. The guide rail is sandwiched between the first antifriction bearing and the second antifriction bearing biased in the direction of movement of the second table by the biasing means.

Abstract: A hydraulically driven X-Y stage for use primarily in optical pattern generators, especially those requiring a vacuum. A pair of hydraulic cylinders (10 and 20) provide the motion along the step and slew axes. The cylinders can be constructed so that either the rod (11 and 21) or the outer carriage (12 and 22) moves due to the oil pressure differential. Hydraulic bearings (36) between the rod and carriage prevent sliding friction while providing stiffness to linear motion in undesired directions. The rods have areas designed, in combination with the bearings, to prevent rotational motion. Hollow tubes and chambers (14, 15, 41-44, and 24) are provided for feeding oil to the cylinders, and flexible metal bellows (19, 34, and 35) surround the cylinders and keep the oil contained.

Abstract: A table apparatus provided with a stacked array of upper and lower slides which are driven independently of each other, in which at least one slide surface of the lower slide is a slide guide shaft which is reciprocatively rotatable and which has a non-circular cross-section, and in which there are provided a rotation transmission mechanism disposed on the table of the lower slide and engaging with the slide guide shaft, said transmission mechanism being slidable axially of the slide guide shaft and rotatable along with said slide guide shaft, and an upper slide drive mechanism for sliding the upper slide in response to the rotation of said rotation transmission mechanism.

Abstract: A novel shelf support system which is capable of bearing heavy loads and provides a large measure of adjustability, yet is completely self-contained and only very minimally visible where the shelf meets the wall. The system comprises threaded fasteners for securement to a wall, e.g. at the stud locations, each fastener bearing a support shaft and a spring clip for interengagement with detent grooves which run lengthwise of elongated recessed chambers within the shelf.

Abstract: A precision drive assembly for the table (b 10) of a machine tool incorporates a screw (12) and floating ball nut (14). The nut is supported by a pair of rods (18,20) which, in turn, are connected to a bracket (26) mounted on the table. The nut is prevented from rotating about its axis by a torque arm (38) extending from the side of the nut and anchored to a bracket (52) attached to the table. Because of this arrangement the nut may move sideways or vertically without substantially altering its linear position.

Abstract: A sheet of film, for use in recording the results of non-invasive medical tests, is indexed relative to a lens and shutter assembly to permit the serial formation of multiple images on the film. The indexing is accomplished through the use of a transport mechanism which may be independently moved in two mutually transverse directions.

Abstract: An improved utility cabinet for dentists is disclosed. The top of the cabinet is movable to a closed position and a functional position, and an adjustable, spring-urged bolt is engageable with different escutcheon plates to latch the top in each position. A waste receptacle is attachable to the side of the cabinet by a hook and teazle material for simplicity in releasably attaching the receptacle to the cabinet. An optional arm rest is arranged so bracket arms spring inwardly against collars to retard pivotal motion of the arm rest.

Abstract: A fine position control device for finely adjusting the position of a fixed information carrier such as a transparency in a COM (computer output microfilmer) system. This position control device is capable of moving a fixed information carrier in the X, Y and Z directions in an orthogonal coordinate system and also of rotating the same in the .theta.-direction in the X-Y plane. The position control device has a Y-direction moving stage, an X-direction moving stage which moves in the Y-direction together with the Y-direction moving stage and is movable in X-direction independently of the Y-direction moving stage, a Z-direction moving stage which moves in the X-Y plane together with a member fixed to the X-direction moving stage and is movable in the Z-direction independently of the X-direction moving stage, and a .theta.-direction rotating stage which moves together with the Z-direction moving stage and is rotatable in the X-Y plane independently of the Z-direction moving stage. The .theta.

Abstract: A cooking grid is disclosed which is adjustable for both length and width. The grid includes special tongs that are provided to lift the grid from a cooking pan and to adjust the length and width of the grid. Removable legs are attached to the corners of the grid to elevate the roast above the roasting pan bottom, as desired.

Abstract: A two piece, lengthwise telescopically adjustable, shelf adapted to be mounted between vertical structural members or studs in a building. The lengthwise adjustability permits use of the shelf arrangement in spite of wide variations in the center-to-center spacing between the structural members.

Abstract: A goods showcase capable of arbitrarily varying depths of respective shelves is herein described. The shelf has struts with a plurality of engaging holes provided on their sides as aligned in columns, and shelf support members which each have a horizontal shelf plate support flange extending from a lower edge of a laterally long L-shaped vertical side plate provided with engaging pieces to be engaged in the engaging holes in the shelf strut and also have a plurality of engaging vertical claws erected from a free edge of the horizontal flange at a predetermined interval. The shelf plates each have a reinforcement crosspiece disposed in the widthwise direction on its back surface, and this crosspiece is provided with an engaging section to which is engage and disengage the engaging claws.

Abstract: An armrest for passengers of vehicles, especially of motor vehicles, which is constructed so as to be adjustable preferably in the vehicle transverse direction.

Abstract: An adjustable refrigeration shelf is provided having means for directing cold air onto the goods on the shelf and means for holding the goods in a highly visible position within the refrigeration unit.

Abstract: A work supporting table has a carriage which extends beneath the bed of a press and a table top which extends over the bed. The carriage has wheels which rotate about eccentric spindles on the ends of the two axle shafts. Chains are wrapped around these shafts and forces are applied to the chains by an air cylinder mounted on the carriage. When the chains are drawn taut, the axles rotate such that the spindles move downwardly and cause the wheels to descend with respect to the carriage frame and thereby lift the table upwardly. The wheels when so disposed support the table with its table top slightly above the press bed. Conversely when the chains are released, the wheels move upwardly and the table top descends onto the press bed which supports it so that a force applied to a workpiece on the table top is resisted by the press bed.

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 table having a sliding table top supported on a base for edgewise adjustment of the top relative to the base, and means for releasably locking the top in fixed position relative to the base. The table is designed for use in combination with a bench seat or the like to provide a dining facility, such as a breakfast nook, wherein the table top may be moved away from the seat for convenience of access to and egress from the seat and toward the seat to a comfortable dining position.

Abstract: Two halves, each identical, are formed with vertical leg portions terminating in horizontal loops. The tops of the vertical leg portions of each half are connected by a top horizontal portion which forms a pair of humps which are receivable into the loops of another identical shelf to thereby arrange the shelves in stacked relation. The two halves of the shelf are connected together by a plurality of legs terminating in vertical loops, which vertical loops of one half surround the legs of the other half to thereby vary the length of the shelf.

Abstract: An appliance stand, suitable for supporting portable television sets and the like, includes easily assembled frame members which provide superior strength. The stand is adjustable in width by means of a telescoping framework to accommodate appliances of various widths, and a removable longitudinal structural member is used as a measuring guage during assembly of the stand to assure that the correct width is attained for a particular appliance.