Abstract: A pivotable folding utility table includes a table top having a pair of support pedestals pivotally attached thereto. A first pivotal support brace, which includes a proximal end and a distal end, is attached at its proximal end to the first support pedestal. A second pivotal support brace, which includes a proximal end and a distal end, is attached at its proximal end to the second support pedestal. The distal ends of the first and second pivotal support braces are adapted to be pivotally attached to a retaining assembly, mounted in relation to the table top. The distal ends of each pivotal support brace are disposed contiguously in relation to each other when engaging the retaining assembly. Specifically, the retaining assembly includes a cross-brace member operably disposed through openings formed in the distal ends of the first and second pivotal support braces, thus providing a pivotal engagement in relation to the table top.

Abstract: A table is provided having a table top, a leg assembly coupled to the table top to pivot about a leg pivot axis, and a channel member defining a downwardly facing channel on the table top. The leg assembly includes a leg pivotably coupled to the table top and a support strut pivotably coupled to the leg and slidably coupled to the channel. The table top includes a pair of plastic table sections having rigidified top sheets, a handle recess, a socket/plug combination configured to secure the table sections together, a leg cradle providing a rotative bearing for the leg assembly, and a pair of rails.

Abstract: A table includes first and second sections coupled together for pivotable movement therebetween and a pair of legs pivotably coupled to the respective sections to move between storage and support positions. The table further includes a pair of channels coupled to each section, a pair of struts coupled to each respective channel to slide therein, and a pair of collars having two substantially identical pieces pivotably coupling each strut to a leg. The table also includes a reinforcing assembly including a pair of rails coupled to the respective sections and a support pivotable relative to one rail and slidable relative to the other rail to provide a rigid member supporting the sections.

Abstract: A banquet table including a table surface, upper frames fixedly installed on the bottom side of the table surface, and leg frames which are rotatably connected to the upper frames so as to allow the leg frames to be folded inward and toward the bottom side of the table surface. The table surface can also be formed by two sections for folding. The two-section banquet table also includes a pair of hinges for connecting the upper frames on each table section. The hinges are designed to include two facing pressure resisting sections so that when the table is extended, the pressure of the table is applied on the pressure resisting sections, instead of the connecting pin shafts.

Abstract: A portable ice box including two folding tables and two folding chairs. The tables are supported by U-shaped frame members positionable in a position extending below the tables. The U-shaped frame members have ball ends which are inserted in clamp seats disposed in two corners of each table.

Abstract: A foldable ready to use computer desk is disclosed having a desk top for supporting computer equipment and the like and a pair of spaced foldable side members which include solid panels that form sides of the desk and support the desk above the floor. The solid side panels are carried by hinges having displaced pivot points which allow the side members to fold over one another in an overlapping manner to create a utility space between the side members and the desk top in which utility devices such as a keyboard drawer assembly, power surge strip, and cable tray are nested when the desk is folded. Brace assemblies urge the side members outwardly in an extended position to support the desk top above the floor and urge upper portions of the side members against the hinge brackets to provide a sturdy construction.

Abstract: A lightweight, high-strength support platform for use in furniture construction, which has superior structural integrity and can be used, by way of example, in portable folding tables, in work tables and in modular furniture of the character typically used in modern office complexes. The support platform embodies a novel structural reinforcement core of a unique configuration which is both lightweight and exhibits superior strength and durability characteristics. In one form of the invention, the support platform is used in the construction of a lightweight, readily portable folding table which includes two pair of legs that are pivotally connected to the platform for pivotal movement between an extended operational position and a retracted storage and transport position.

Abstract: A table includes a tabletop and a pair of opposing folding leg assemblies. Each folding leg assembly includes a base plate secured to the tabletop. A folding leg is pivotally connected to the base plate by a linkage arrangement that includes a first link pivotally connecting the folding leg to the base to define first and second axes of rotation and a second link pivotally connecting the folding leg to the base to define third and fourth axes of rotation. The second link includes a transverse section, and a latch is secured to the base plate for releasably engaging the transverse section when the folding leg is in the extended position. The first link also includes a transverse section or recess for engaging the latch to hold the folding leg in the folded position.

Abstract: A plastic table structure includes a top having a planar upper surface portion, a lower plastic portion and a central wooden frame interposed between and enclosed by the top and lower portions. A pair of folding leg assemblies for supporting the table are rotatably carried by the lower plastic portion and pivotable between an open, top-supporting position and a retracted, enclosed position in leg-receiving channels formed in the underside of the lower plastic portions. Each leg assembly includes a pair of upper transverse supports that engage the leg-receiving channels of the lower plastic portion and extend across its entire width to provide a plurality of transverse load-bearing interfaces to enhance the rigidity and load-bearing capability of the plastic table.

Abstract: A folding and latching mechanism for a table leg includes a recess into which a latching pin is moved when the leg is erected. A spring-loaded latching bar includes a camming surface which bears against the latching pin on a diagonal tangent. The force applied by the camming surface thus has a component tending to seat the latching pin securely into the recess throughout the time the table is in its erected condition.

Abstract: A utility table having a top and foldable legs. The top has openings. On the underside of the top, flexible strips extend across the respective openings. Each opening and strip form an open-sided pocket for drinking containers. The folding of the legs up against the top is accommodated by the flexible strips being gathered between the legs and the top.

Abstract: A folding collapsible table stand including a mounting frame fixed to a table board at the bottom, two pairs of stand legs pivoted to the mounting frame, two horizontal braces connected between the stand legs, and four folding struts connected between the mounting frame and the stand legs, wherein each horizontal brace has a plurality of retaining strips at both ends respectively inserted into respective retaining holes on the stand legs and then secured in place by screw bolts inside the stand legs; each folding strut consists of a base frame and a flat connecting rod pivotably connected together, and a guard plate hinged to one side of the base frame and releasably secured in the closed position by a snap to hold down the folding strut in the operative position.

Abstract: A lightweight stacking table with folding legs. There are a pair of unitary plastic H-shaped legs each having a pair of leg portions separated by a cross-piece. There is a unitary plastic top having a flat top surface and a waffle-patterned under-structure. The under-structure has a pair of mirror imaged H-shaped slots therein holding the pair of H-shaped legs. The top has side edges which angle down and slightly outward from a top edge at the periphery of the top surface and has a curved bottom edge which grips the top edge of a second table when two tables are stacked one upon the other. The H-shaped legs are separately pivotable between stored positions within the H-shaped slots and support positions out of the H-shaped slots supporting the top by four pivot pins through bores in the under-structure and bores top ends of the leg portions.

Abstract: A portable table includes a top surface having a plurality of compartments positioned within a removable block member permitting ease of cleaning and maintenance of the block and the compartments therewithin, and includes pivotally mounted legs mounted to a bottom wall of the table, wherein pairs of the legs are arranged for interconnection to optionally employ a tensioning structure to maintain the legs in an orthogonal relationship relative to the bottom wall.

Abstract: A mechanism for folding the T-leg of a table is contained within a tubular housing carried by the end of the pedestal portion of the leg. Spring-loaded cams at each end of the housing slide in slotted frames mounted to the underside of the table. A locking shoulder at one end of each slot retains its cam in a locking position and a lever associated with each cam unlocks it and allows the leg to fold.

Abstract: A combination tray and wheeled cart (10) has three positions: an initial storage position with minimum space requirements; an intermediate carrying position configured as a conventional tray provided with an overhead handle for carrying to a job site, and a third erected operational position for mobile use on the job site. The combination tray and wheeled cart (10) is relatively lightweight, yet sturdy, and may be moved from one position into another position quickly and easily. Respective pairs of legs (20, 21) are pivotably mounted to the sides (12, 13) of a tray (11); and balls or casters (25) are provided on the ends of the individual legs (17). A shelf (27) is pivotably carried by one (21) pair of legs (17) and is releasably secured to the other (20) pair of legs (17), thereby structurally bracing the combination tray and wheeled cart (10) in its erected operational position. A variety of insert trays (39-44) adapt the combination tray and wheeled cart (10) for particular purposes.

Abstract: A plastic table structure includes a top having a planar upper surface portion, a lower plastic portion and a central wooden frame interposed between and enclosed by the top and lower portions. A pair of folding leg assemblies for supporting the table are rotatably carried by the lower plastic portion and pivotable between an open, top-supporting position and a retracted, enclosed position in leg-receiving channels formed in the underside of the lower plastic portions. Each leg assembly includes a pair of upper transverse supports that engage the leg-receiving channels of the lower plastic portion and extend across its entire width to provide a plurality of transverse load-bearing interfaces to enhance the rigidity and load-bearing capability of the plastic table.

Abstract: A sunshade arrangement includes first and second pairs of telescopically retractable spaced posts, first and second tubes respectively mounted to upper ends of the first and second pairs of posts, a reel assembly, and a screen. Each post includes a device for controlling telescopical movement.

Abstract: A folding table has a unitary table top formed of molded plastic preferably having an outer shell of non-cellular plastic with a filling of light weight hardened foam. Pairs of spaced apart sockets are formed in the table top material at the underside of the table top and a cylindrical bushing is disposed in each socket. One of a pair of pivotable leg assemblies is coupled to each pair of sockets by a pair of pivot axle projections that extend into the sockets and bushings. At least one of the sockets of each pair has a depth at least equal to the combined distances that the pivot axle projections extend into the pair of sockets. This enables entry of the pair of pivot axle projections into the pair of sockets by inserting one of the projections deeply into the one socket and then partially withdrawing that projection while guiding the other projection into the other socket of the pair.

Abstract: This relates to a tray assembly that can serve the of a conventional tray, a bed tray, or a bathtub tray. To accomplish this, the tray is provided with legs. When it is to be used as a conventional tray, the legs are merely folded underneath the tray. If the tray is to be used as a bed tray, the legs are moved to a slightly overcenter position to support the tray in an elevated position. To use the tray as a bathtub tray, the legs are returned to the folded position beneath the tray and are designed to move horizontally outwardly to extend the length of the tray so that it can be located on the sides of the bathtub.

Abstract: The folding leg structure of a folding table is journalled for rotation in a cylindrical journal formed in a bracket which is bent-up from a strip of metal and secured to the bottom of a table. A downwardly-extending portion of the bracket has a flat horizontal surface containing an aperture in which a resilient bumper member having a high-friction surface is held. Four such brackets are used, one near each corner of the table, and the bumpers extend downwardly beyond all other portions of the table, when in its folded condition, so that a plurality of such tables can be stacked with the top of each table top contacted only by the bumpers of an adjacent folded table, thus avoiding marring and sideways slippage. An additional bracket and bumper may be mounted near the center of the underside of the table for additional support.

Abstract: A folding table includes legs which are movable between an open, unfolded position and a closed, folded position. A slide plate, having at least one edge wall, is secured to the underside of the table inwardly of the legs. A strut is pivotally secured at one end to the leg. The free end of the strut has a head formed in it which is slidable along the plate edge wall. A locking pin is mounted to the strut head and is urged against the edge wall of the plate. The wall includes an opening which receives the pin to lock the leg in its unfolded position. The end of the strut head opposite the locking pin includes a grip which is operatively connected to the pin. The table is unlocked by urging the grip inwardly. The grip is formed in two halves to define a clip which frictionally receives the leg to lock the leg in its folded position.

Abstract: A work table or office desk with a frame and a work surface supported by the frame, where the frame has a horizontal crosspiece, the ends of which are connected with each one of a table leg having base element. The table legs are fastened by simple structure to the crosspiece in such a way that it is possible to bring them from a space-saving storage position into a stable position of use with only a small assembly effort.

Abstract: A securement device for releasable attachment of a lapboard to a user's leg includes a table member and a pair of in-folding leg members, one each of which is attached for hinged movement relative to a corresponding side edge portion of the table member. Elastic webbing interconnects the free end portion of each leg member to a central portion on the underside of the table member. The securement device is centered on a user's leg with the leg members bracing the table member to prevent displacement thereof as a result of ordinary unbalanced imposed forces. When removed from a user's leg, the securement device folds to a compact storage position flush with the table member.

Abstract: A mobile work station for a painter or the like includes a frame and further includes a tray to hold paint containers (such as a paint pan) as well as tools, accessories and the painter's personal items. The tray may be segmented or divided into compartments for the paint pan and various articles. Legs are pivotally mounted on the frame for ease of storage and transport, and the legs have stored and depending positions, respectively. A removable cover is provided for the tray; and the cover may be disposed between the legs to further support the legs and to serve as a shelf during use of the mobile work station.

Abstract: A folding table construction provides a "Z"-shaped table for use and a minimum folded shape for storing. A table top and base member are connected by a diagonal support. The table top and base member are pivotable inwardly against each side of the diagonal support for folding, and pivotable outwardly to extend from each end of the diagonal support to be ready for use. A holding and locking device is used to lock the table top and base member in their extended position.

Abstract: Folding furniture to be used as a table, pedestal, supporting structure or the like which may be easily collapsed into a low-volume configuration for portability and storage. The furniture generally consists of four panels which function as top, bottom and sides, hinged together to form a rectangular structure. Adjoining panels at two diagonally opposed corners of the rectangular structure contain axially aligned bores in a tongue-and-groove assembly, receiving pins to secure the adjoining panels; this assembly allows the adjoining panels to swing obtusely. Panels meeting at the other two diagonally opposed corners of the rectangular structure are attached with hinges, allowing the panels to swing acutely. The side panels contain variously shaped support members which are hinged to said side panels.

Abstract: A mobile work station for a painter or the like comprising a tray to hold paint containers and tools, four legs with wheels and a handle. The tray may be divided into compartments to more securely hold the paint containers. The legs are pivotally mounted and may swivel through 270.degree. for storage in the tray for ease of storage and transport. The legs may be secured in the depending and in the stored positions. A removable shelf may be attached to the work station to hold accessory equipment, tools and personal items. A carrying strap is provided to facilitate transport of the work station.

Abstract: A combination serving tray, bed tray and bathtub tray. A "U-shaped" leg is hinged at each end of an elongated tray, to swing from a closed position underneath the tray frame down into a generally upright position. In this position, the legs hold the tray a predetermined height above the surface on which the legs are supported. A cammed latch is provided beneath the bottom surface of the tray, positioned to engage the resiliently bendable bight portion of each "U"-shaped leg when the leg is swung up from its open position to its closed position. Handles are provided at each end of the tray, slidably engaged with the tray frame and movable outward a predetermined maximum distance but no farther. In its preferred form, the cammed latch includes a spherical body that engages the resiliently bendable bight portions of the "U"-shaped legs to hold them in their closed positions.

Abstract: A cart for transporting objects onto beaches or other soft surfaces. The cart comprises a frame, a pivotable support platform, and at least two wheels. The frame includes a pair of elongated side rail members each having an upper end portion including a handle extending therebetween and a lower end portion through which an axle passes. The pair of wheels is mounted on the axle. The pivotable support platform comprises a generally planar plastic member having a pair of sides. A pair of pivot rods are provided to establish a horizontal pivot axis. The rods are coupled to the sides of the platform to enable it to be pivoted about that axis from a storage position wherein the platform is substantially flush with the frame to an operative position wherein the platform extends substantially perpendicularly to the frame. The platform includes a pair of cantilever brackets disposed therebelow and integrally molded therewith.

Abstract: A top unit is provided defining a upper work surface and having front, rear and opposite side marginal portions. A downwardly opening cover also having front, rear and opposite side marginal portions is provided and the rear marginal portion of the cover is pivotally supported from the rear marginal portion of the top unit for swinging about an axis generally paralleling the rear marginal portions between a closed position closely telescopingly engaged over the top unit from above and a open position extending upwardly from the rear marginal portion of the top unit.

Abstract: A stand, table or other supporting structure having one or more supporting leg assemblies connected thereto in such a manner that the leg assemblies can be collapsed into a compact condition to facilitate storage, transportation and handling of the stand, table or other supporting structure. The leg assemblies are retained in their operative position substantially perpendicular to and rigid with respect to the stand to provide a stable support for the stand and for any item or items placed thereon. The leg assemblies are retained releasably in their operative position by a manually operated spring lock device that is provided with a camming feature which enables automatic locking of the leg assembly when oriented into operative position and maintaining a continuous upward bias on the leg assembly for maintaining the rigid perpendicularity of the leg assembly in relation to the stand.

Abstract: A folding table, suited to patio and poolside use as well as to interior use and comprising a horizontally disposed table top having a transparent sheet top with a downwardly projecting rim supported by opposed foldable, nesting leg assemblies for said top at opposite ends of said top, movable from a vertical position in which they support said top to a substantially horizontal position folded in nested relation against the bottom side of said top. A spreadable keeper member having a downwardly opening socket is fixed to the underside of said top on each side of the center thereof in a location such as to releasably lockably receive leg brace parts and retain the leg assemblies in vertical position.

Abstract: A combination portable dolly and collapsible stool for transporting photography equipment and the like, and for providing an elevated platform for taking photographs. The legs of the stool are pivotally mounted at opposite ends of a rectangular box platform and are braced by members (which may be U-shaped) that are pivotally secured to vertical portions of the stool legs and which have free ends that are secured by a latching means in either extended leg bracing position or in collapsed carrying position.Rollers are mounted on the exterior of the legs adjacent the pivots so that when the legs are collapsed the rollers support the base platform as a dolly. In such collapsed condition, the legs rest within each other and are secured together by an interlocking means.

Abstract: Combination airplane tow bar, platform and step stool structure for use in attending to small aircraft. The platform includes an upper deck member having depending side flanges inset from each side edge thereof with each flange extending beyond the end edge of the deck member and terminating in a rounded apertured end. Leg assemblies are pivoted to the ends of the flanges for movement between a position perpendicular to the deck member for use of the device as a seat, step stool, elevated platform or the like and a position extending longitudinally outwardly of the deck member for use of the device as an airplane tow bar. One of the leg assemblies includes a latch structure for connection with an aircraft to enable the aircraft to be towed. The latch structure may include a spring latch depending on the aircraft attachment. Both leg assemblies can be pivoted into overlying relation to the deck member for compact storage and when folded, the device forms an effective wheel chock for the aircraft.

Abstract: A Sarrus linkage is a type of folding linkage or structure in which two opposed links are connected by two sets of connecting links, each of which sets includes two separate links. The links of such a linkage are hinged together in such a manner that the entire linkage will fold and unfold as any part of the linkage is moved with respect to the remainder of the linkage. By providing a control link which is pivotally connected to one of the opposed links and a motion transmitting link pivotally connected to the control link and to one of the links of one of the sets, a folding structure can be obtained which can be employed for a variety of useful purposes. Best results are obtained when two of the motion transmitting links are employed, one of the motion transmitting links being pivotally connected between a link of one of the sets and the control link and the other of the motion transmitting means being connected between a link of the other of the sets and the control link.

Abstract: A work surface defining assembly is provided for use by seated persons. The assembly includes a horizontal upper work surface and includes remote transverser front and rear marginal portions. Depending front legs are supported from the assembly adjacent the opposite end portions of the front transverse marginal portion and the rear marginal portion includes transversely spaced downwardly facing abutment surface portions for engagement with and support from the upwardly facing upper surfaces of the horizontal upper leg portions of a seated person. The assembly also defines a downwardly opening cavity and the front legs and the assembly include coacting structure for upward folding of the legs into retracted positions within the cavity.

Abstract: A multiple-paneled folding tabletop is supported by two attached foldable subframes which interlock when unfolded and form a single frame supporting the tabletop by its perimeter. The tabletop consists of a series of rectangular panels attached to each other along their long edges by hinges. The direction of folding of the hinges alternates between panels. A subframe is affixed to each of the two end panels. The subframes include two swiveling bars which can move in a plane parallel to the unfolded tabletop. Each bar, when folded, is contained within a subframe and, when unfolded, spans the center panels and interlocks rigidly with the opposite subframe. Two foldable legs are attached to each subframe which, when folded, are contained within the subframes.

Abstract: A folding stool including a top having a depending peripheral skirt and support leg members operatively mounted on the underside of the top, and inward of the peripheral skirt. Leg members are mounted at opposite ends of the stool. Each leg member includes two legs interconnected as a pair. The leg members are pivotally moveable to an extended stool support position, and to a retracted folded position within the confines of the skirt. Selectively engageable double leg locking means are provided, with portions thereof being on the stool top and portions thereof being on the legs of the leg members. The locking means are functionally operable for locking the leg members in the extended stool support position. Engagement and disengagement of the double locking means is manually effected by rectilinear movement of the leg members, toward the stool top when in the extended stool support position. Pivotal movement of the leg members is prevented with the locking means operatively engaged.

Abstract: A multiple position leg assembly for a heat exchange unit is disclosed. A support surface has a pair of slots which coact with a leg such that the leg has a shipping position wherein it does not extend beyond the bottom of the unit and has a support position wherein it is securely fastened in the slots of the support surface to maintain the unit a preselected distance from a mounting structure. The leg is designed such that internal forces act to secure narrowed portions of the leg in the slots to provide a secure support for the unit.

Abstract: A mobile barbecue apparatus is disclosed which comprises a firebox having wheels thereon with turnable receptacles for holding items to be cooked mounted above the firebox. The food containing receptacles are adjustable in width to accommodate different sized items such as steaks, chickens, ribs, etc., which are to be cooked. Preferably the top of the apparatus comprises a removable table having legs positioned at the edges which can be rotated into storage position or into table defining position.

Abstract: A folding leg mechanism for a table is adapted to be releasably locked in a firm, stable position as the leg portion thereof is swung down to extended position from retracted position against the underside of the table top. A longitudinal slot extends through at least one side of the leg and has its longitudinal axis in substantial alignment along the leg with the pivot axis about which the leg swings. A pin extends outwardly through the slot and is adapted for movement along the longitudinal axis of the slot. Spring means are provided for biasing the pin toward that end of the leg which is attached to the table. A trackway is positioned at the side of the leg from which the pin extends, so that the pin rides on and along the trackway as the leg swings between its retracted and extended positions. Abutment means are provided with which the leg makes contact when it is moved to its extended position.

Abstract: A foldable table has a pair of top sections hinged together along mating edges and with each top section including a top panel together with a peripheral skirt. A pair of legs are pivotally mounted respectively near the outer corners of each top section and are swingable between a downwardly-projecting support position and a folded position. Adjustable ties are angled respectively between different ones of the legs and the top sections for rigidifying the legs when in the support position. Each leg is pivotally mounted to swing widthwise of the table. A plurality of struts are each angled lengthwise of the table between a portion of the leg and a corresponding portion of the related top section, each strut being respectively coupled at each end to swing with its associated leg between the support and folded positions. In addition, means are provided for locking the legs in the support position.

Abstract: An improved folding leg assembly includes a trestle attached to the underside of a table top and a pair of legs articulated to the trestle in such a manner that the legs may be folded against the underside of the table top. To permit their articulation, one end of each leg has a rounded head or ball which is rotatably mounted in a corresponding socket, the legs being braced by troughed ends of a generally C-shaped web attached to the trestle formed in the trestle. The swing of the legs may be limited by guide slits provided in the sockets.

Abstract: A table leg locking mechanism that secures the legs of a table into operative position when a retaining member of the locking mechanism is engaged, with said retaining member normally being biased into this engaging disposition through the agency of a spring; the locking mechanism includes a cross bar that secures to the table leg(s), a pair of housings having the cross bar pivotally mounted therethrough, with one of said housings incorporating a pair of sleeves, one of the sleeves being rigidly secured internally to the housing, and the other sleeve being rigidly fixed to the cross bar. The retaining member includes a wedging member(s) projecting from one of the sleeves, with a complementary groove(s) provided in the other sleeve, whereby the pivoting of the leg into its operative position allows the wedging member to become wedged within the groove for fixing the table leg into a supportive position.

Abstract: Disclosed herein is a reducible volume desk, or in other words, a desk whose volume can be reduced with the utmost ease so that, at the time it is being transported, it takes up the least possible space. Subsequently, in an extremely short period of time, the desk can be reassembled in its final configuration with the certainty that all of its component parts are available.The desk is essentially composed of a first member, or support platform, to the underneath part of which are connected two second members that define the lateral walls and a third cross member perpendicular thereto; the said second and third members being foldable, one on the other, in parcel form, on the lower surface of the support platform.

Abstract: A folding table is comprised of a table top and frame of side rails, and includes at each corner formed by the side rails, a further rail attached to the underside of the top forming a channel with one of the side rails. A leg is pivotally attached at each corner on an axis perpendicular to the opposing walls of the channel formed. A locking means is carried within a recess of the further rail which, when a leg is unfolded to its extended position, will be effective under spring loading, to provide a bearing against the leg for locking it into extended position. Pressure on the locking means to force it into the recess, releases the leg for folding. When the legs are in the folded or unfolded position, the locking mechanism is completely hidden.

Abstract: A tray for use in an automobile which is fitted on its underside with folding legs, of a size when extended to mount the tray on the floor inside a vehicle over the hump of the transmission shaft. The legs are each fitted with a projecting bracket which supports the ends of the tray in the extended position of the legs, with said brackets shaped to fit about the hump of a transmission shaft when the legs are folded so that the tray may rest directly on the said hump.