Abstract: An expansible rack for holding food pouches within a rethermalizer unit includes a pair of side members pivotally connected at their lower end portions to a bottom member, the upper end portions of the side members having support pins for supporting the rack from the top edge of a reservoir in a rethermalizer unit. The pivotal connections of the side members with the bottom member permit the side members to be rotated toward and away from one another, thereby providing the capability of adjusting the rack to accommodate variously sized food pouches between the side members. A rethermalizer unit for use with the rack includes a plurality of notches disposed around the perimeter of the top edge of the reservoir. The support pins of the rack are placed in notches selected according to the desired spacing of the side members to accommodate the food pouch contained therebetween.

Abstract: The dismountable mold of the present invention is constituted by a circular base with a predetermined height, the lateral wall of which is provided with a circumferential peripheral groove, and a flexible strip constituting the lateral wall of the mold, said strip being provided with a longitudinal rib near its lower edge, said rib being provided for its housing in the mentioned circumferential groove in the base. Said flexible strip has both ends shaped for their mutual locking, by the introduction of one end through an opening provided in the opposite end and by housing a projection as a wedge provided at one end, within a hole provided at the other end.

Abstract: A foodstuff lifter for slow cooker units which units are normally of deep sided configuration. The lifter includes a lower, footed, rack member and an upper ring member which members are attached through flexible links or through solid links which permit collapse of the members into substantially flat condition after the foodstuff has been removed from the cooking unit or similarly for storage or shipping.

Abstract: An outdoor patio deck is outfitted with a metal grate having a central fire bowl. The fire bowl can be used as a barbecue pit or a campfire retainer. The metal grate dissipates the heat from the fire and prevents damage to the deck. A cooking chamber is created by the addition of a pair of racks, a spit, and a lid. An ash chute can be installed at the bottom of the fire bowl for high decks.

Abstract: A charcoal barbecue having a layer of aluminum foil covered a rectangular corrugated box is forming an outer of the charcoal barbecue. The bottom portion of one side thereof is cut to form two door panels and can be opened into a ventilation orifice, inner side of said box with an aluminum foil and a partition rack positioned at the top portion of said box. Smoke-free charcoals are arranged in the top of the rack and a bulge is disposed in a corrugated board for fixing the top of said smoke-free charcoals. Two sides smoke-free charcoals. Two sides of the corrugated board are disposed with oil-absorbing paper and a rectangular fixing board is positioned at the top of said smoke-free charcoals. An inverted `U` shape barbecue mesh is engaged with the top of the corrugated box.

Abstract: A rack for supporting poultry in a baking pan during a cooking operation includes two slidably interconnected sections that can be pulled apart for disengagement from the turkey or chicken after the rack has been transferred from the baking pan to a serving tray or platter. Each section of the rack has a lifter handle to facilitate the process of lifting and moving the rack.

Abstract: A cooking apparatus for alternately cooking, broiling, or grilling foods in a single vessel. The apparatus includes a lower pan portion which is supported by a lower frame portion. An upper frame portion is pivotally supported from the lower pan portion. A upper lid portion is provided, wherein the lid portion is pivotally affixed to the upper frame portion. The lid portion includes a top portion and a grille portion. The grille portion of the lid is the inner wall surface of the top portion, and is thus located in the upper reaches of the lid portion when the lid portion is in a cooking position. When the lid is rotated one hundred eighty (180) degrees, the grille portion provides an upwardly exposed grille surface for food preparation. The lid portion is shaped suitable for nesting in the bottom portion when the upper frame portion is returned to a normal cooking position.

Abstract: A stove top grill assembly for barbecuing foods comprising a base portion (12) with supporting means (20, 16) for a cooking grill (10) and a stone (14) enclosing a central cavity (18). When in use the stone (14) rests directly over a burner or concentrated heat source surface separating foods being cooked on the grill (10) above from flames below and allowing rapid heat distribution without flame penetration. Conversely the stone (14) captures food and grease drippings from above converting them to flavor inducing smoke for barbecuing without igniting.

Abstract: A free standing assembled smokehouse, which can be collapsed from its open or assembled configuration to a closed or disassembled compact configuration is shown. The open or assembled smokehouse is a box-shaped with a firebox chamber in the lower portion that can accommodate a variety of heat sources such as wood, electric heaters or charcoal. The upper portion of the smokehouse is the comestible chamber where food products are supported by removable shelves that are arranged so that smoke and heat can circulate efficiently, thus smoking the food products uniformly. When disassembled and closed, the smokehouse has a compact configuration that contains all the parts in a narrow rectangular box that is easy to store and transport.

Abstract: There is disclosed a multi-piece portable oven having an oven body (22), a baking mold (24), and a cover (28). Oven body (22) has and upwardly extending cylindrical sidewall (34) and a substantially flat bottom (32). Baking mold (24) has an upwardly extending cylindrical sidewall (38) and a substantially flat bottom wall (40) with an upwardly extending frusto-conical opening (44) at the center thereof. Baking mold (24) is placed inside oven body (22) for baking and steaming. Cover (28) has a circular configuration and downwardly extending peripheral edge (42) that is adapted to provide a tight fit over the baking mold (24) and oven body (22). The portable oven is adapted to be placed on top of a gas stove or electric range. The direct heat of the flame on the oven body will heat the air inside the portable oven and cause the food inside to be cooked or baked.

Abstract: A ceramic meat cooker is inserted into a center portion of a piece of meat. The cooker is shaped to hold the meat in an upright vertical alignment above the rack of an oven or above a grill. While the heating element cooks the outside of the meat, the cooker cooks the inside of the meat providing more evenly cooked foods in a shorter amount of time. The meat cooker has a conical shape that holds the meat above a cooking surface. The meat in turn does not soak in saturated fat extruded from the meat during cooking providing cooked meat containing less fat. A flared base at the bottom end of the ceramic cooker supports the cooker and the meat in an vertical upright position eliminating the need for special spit attachments above the cooking system.

Abstract: A foldable outdoor cooking device having wall assemblies which are hinged and foldable and when erected form an enclosure. Hangers are detachably securable to the enclosure to support a cooking grill above the enclosure. The device may be used with gaseous fuels or may be positioned on a pan so wood or charcoal may be used as a fuel. The grill has handles which may be extended to assist the user in moving the grill.

Abstract: An improved roasting rack having an infinitely adjustable width comprising two interlocking frameworks. A first and a second framework each include a plurality of grate members. Each grate member comprises a base end and an elongated arm extending away from the base end and forming a distal end of each framework. An upper cross-bar is affixed to the distal end of each framework and a lower cross-bar is affixed to the inside surface of the base ends adjacent the elongated arms. The first framework inserts into the second framework, to join the framework and form a roasting rack, such that the elongated arms interleave with each other and so that the upper cross-bar of each framework rides on a continuous top bearing support surface provided by the elongated arms of the other framework. The infinitely adjustable width of the roasting rack is characterized by the position of the upper cross-bar of each framework on the continuous top bearing support surface of the other framework.

Abstract: A device for grilling small pieces of food is described which is a basket including a mesh. The device fits inside of conventional grills even when the lid of the grill is closed and can be easily removed for shaking and turning over of the small pieces of food without their falling out. The basket optionally has a removable lid that can be used independently of the device as a cooking surface. When the lid is in place, the entire device may be turned over. When the lid is either off or in the up position, the food inside the basket may be stirred or moved.

Abstract: A dome cover for cooking utensils, including a dome-like cover body made from a meshed steel plate by stamping and defining a plurality of small open spaces in it, and a knob raised from the top center of the dome-like cover body, the dome-like cover body having a stepped outward flange around the border, which stepped outward flange has a rim around the border reinforced by a steel wire.

Abstract: An assembly (10) adapted for use heating a food product includes a wooden log section (12) having a cavity (14) therein defining a trough (17) for containing a solid fuel (26) and a metal grill (28) having a frame (30) adapted to and supported by the wooden log section (12) for supporting a food product to be heated. An apparatus (50) for forming the cavity (14) in the wooden log section (12) is provided and includes a support base (52), a pivotal member (54) pivotally mounted to the support base (52), a handle (60) mounted on the pivotal member (54), a support (62) mounted on the pivotal member (54) for supporting a cutter (64), a rotary cutter (64) connected to the support (62), a spring (68) operatively connected to the support base (52) and the pivotal member (54) biases the pivotal member (54) away from the support base ( 52), and a clamp mechanism (70) mounted on the support base (52) for clamping the log section (12) in a fixed position.

Abstract: A rugged, flatly folding, portable chafing dish assembly is comprised of a cover, food pan, water pan, collapsible stand and heat source. The collapsible stand is rectangular and is comprised of four rigid plates forming the sides of the rectangular stand which are rotatably coupled together by means of a flatly folding piano hinge. The hinge is integrally formed with the sides and can be disassembled for cleaning. The two lateral sides of the stand are identical and interchangeable, as are the two end sides. The rectangular stand is provided with apertures through the lateral and end sides, both for air access to create a heat draft for the burner source when placed within the stand, as well as access to the burners when the chafing dish assembly is assembled. A rigid rectangular tray extends the length of the stand and connects to the end sides along an access aperture edge thereby rendering the otherwise collapsible rectangular stand rigid.

Abstract: Applicants' invention comprises an apparatus for safely yet effectively handling steam table pans. The apparatus is a frame formed from cylindrical steel of a shape and size for surrounding a steam table pan under its lateral flange. The frame includes two handles positioned so as not to interfere with proper seating of the pan in the receptacle hole in the steam table. One embodiment of the pan handling device includes lid/pan clamps for securing the pan handling device to a steam table pan as well as for securing a pan lid to a pan such as when food is to be stored in a pan.

Abstract: The invention is a reinforcing support structure for a pan adapted to contain an object. The pan has a pan bottom and a sidewall extending upwardly from the periphery of the pan bottom. An outwardly extending rim is formed on the upwardly extending sidewall around the entire circumference of the pan. An outer support for holding the pan has an upper support portion and a lower support portion. The upper support portion is applied to the entire outwardly extending rim of the pan to support and reinforce the extending rim. The lower support portion also includes a plurality of horizontal support members wherein at least one of the horizontal support members is formed in a zigzag shape. An object support rack is disposed within the pan to support the object when the object is disposed in the pan. The object support rack includes a spacer for spacing the object apart from the pan bottom.

Abstract: The tabletop device for the preparation of meals comprises a burner, which may preferably be placed on a plate of wood, stone or the like in a nonslipping manner, and a grilling material carrier removably disposed above the burner. The burner is surrounded, at a lateral distance from it, by a chimney-like hood at least partly spaced from the plate and rising above the burner, whose side walls in combination with the walls of the burner delimit air flow channels communicating with ambient air at the bottom end. As a result of these measures an air flow acting upwards from below will be generated when the burner flame is ignited, spreading the flame across the entire burner surface and enriching it with oxygen to a great extent.

Abstract: The present invention provides an improved cooking grate assembly 10 for use with barbecue grills. The cooking grate assembly 10 provides a cooking grate 12 that has an opening 34 and an insert 14 that is removably positioned therein. The cooking insert 14 is securely supported within the opening 34 by the supports 30 that are attached to the cooking grate 12. The insert 14 may have alternative cooking surfaces 64, 66 on opposite sides and may be flipped over to utilize the alternative surfaces 64, 66. Additionally, various cooking inserts 14, 102 having various cooking surfaces 64, 108 can be interchangeably positioned within the cooking grate 12.

Abstract: A cooking apparatus uses a cooking grid having an upper surface with a series of parallel rails and parallel valleys. The cooking grid has a continuous upper surface such that juices and other drippings from food which is being cooked upon the upper surface cannot come into contact with a heat source such as an electrical heating element. The grid further prevents flame from striking the food disposed on the top of the grid. The heat source may be an electrical heat source disposed within the grid. Alternately, the heat source could be separated from the grid by air. Another alternative as the heat source as part of a heating assembly upon which the grid is disposed. A multi-finger utensil is used with the grid. The grid is made of sections with grease seals between them.

Abstract: The invention concerns an appliance for heating up and keeping warm of food or beverages comprising at least one food container and one heating element and is easy to operate and to clean as well as allowing an even heating up of food, containing an electrical temperature control preventing overheating.

Abstract: A barbecue grill assembly is disclosed including a bowl and domed, free-standing lid mating with each other to form a three-dimensional oval in combination a support assembly being provided for the bowl in the form of a integral shelf lid holder or brackets mounted on a portion of the barbecue grill assembly in spaced apart relation less than a corresponding dimension of the lid with extended surfaces and stops for causing the lid to move horizontally along the extended bracket surfaces and then rotate into a generally vertical position in cradled engagement with the brackets or integral shelf lid holders, an ash collector unit including vent means being suspended beneath a central portion of the bowl, and an ash sweep assembly to for cleanup of the ashes.

Abstract: A table-like device is provided for preparing foods. A one-piece tabletop is made of stainless steel sheet metal. The tabletop has a central downward curvature. A heating device is arranged beneath the tabletop for heating the central region thereof. A plate-like heat transfer element, an electric heating element and a plate-like reflector are arranged, one below the other, under the central region of the tabletop for efficiently and uniformly heating the central region.

Abstract: A chafing dish assembly which contains a pair of rings that support a pair of heating elements located below a water tray. The water tray is elevated above the heating elements by a frame supported by a pair of pivoting legs. Located within the water tray are a pair of food dishes. The heating elements heat the water within the tray, which heats the food within the dishes. The frame has a bent top edge which provides a ledge for the water tray. The rings are cantilevered from the frame so that the weight of the heating elements deflect the rings away from the water tray. The height of the flame and the weight of the heating elements decrease as the fuel within the elements becomes expended. The reduction in the weight of the heating element induces an upward movement of the rings toward the water tray, wherein the smaller flame is moved into closer proximity with the tray to provide a more uniform heating process of the food.

Abstract: A barbecue grill including a lifting mechanism controlled to lift the cooking grid thereof, the lifting mechanism including a transmission rod having two reversed worms and driven by a crank handle, two driven gear wheels respectively meshed with the reversed worms and having a respective coupling hole at the center, and two links each having one end fixedly fastened to said coupling of either worm gear and an opposite end pivoted to either side of said cooking grid respectively.

Abstract: A barbecue grill assembly includes a first bowl, a second bowl disposed on the first bowl, a grate disposed on the second bowl, a bolt and a crank. The first bowl has a first bottom and a first skirt, a central tube extending from the first bottom thereof and two first slots are defined in a periphery of the central tube and each disposed diametrically opposite in the central tube, a second slot is defined in the first skirt. The second bowl has a second bottom and a second skirt, the second bottom for charcoal disposed thereon has a central hole and a plurality of vents defined therein and a long tube has a first end having a receiving hole defined therein for a stud extending downwardly from the grate inserted therein and a second end inserted in the central tube, the second end of the long tube has a U-shaped tunnel defined therein such that the bolt extends through the second slot, the first slots and the U-shaped tunnel to engage to a nut.

Abstract: Portable barbecue apparatus comprising a series of longitudinally extending, laterally spaced grill rods; and laterally extending, longitudinally spaced cables connected to the rods; the cables being flexible, whereby the rods and cables may be rolled up into a bundle for transport, and unrolled to form a cooking grill.

Abstract: A gridiron (1) is movable both vertically and horizontally and can thus be moved in space with a single handle. A locking device consisting of a simple screw or clampdevice may be provided to securely hold the gridiron in a determined position. The movability of the gridiron (1) is achieved using a parallelogram device (9-16) by means of which the gridiron (1) remains horizontal in all positions. The disclosed gridiron design allows food to be placed and removed from the gridiron much more easily and also the cooking stage of individual parts of the grilled foods to be checked. In addition, the grilled foods can be swivelled to a serving, so that the guest may choose the piece they wish. The gridiron (1) is provided with a holding device (17-20) which can be mounted either directly on a garden grill or on a separate stand.

Abstract: In a grate the bars (1, 2, 3, 4, 5, . . . ) of S-shaped cross section are combined to form two groups of bars (1, 3, 5, 7, . . . ; 2, 4, 6, 8, . . . ). The two groups form moving units longitudinally displaceable relative to each other. The profiling of the bars prevents fat from dripping into the fire. Pulling apart the two groups of bars exposes all surfaces of the bars so that they are easy to clean.

Abstract: Portable cooking apparatus which comprises a support stand for supporting the apparatus above a cooking fire; a pair of flat cooking grills between which food to be cooked may be placed and suspension members connecting the pair of cooking grills to the support stand. The suspension members are manipulatable for moving the pair of grills from a horizontal position to a vertical position and then to another horizontal position as the relative position as one grill on top of the other is reversed.

Abstract: In accordance with this invention, a convection oven rack is provided which includes a base portion and a plurality of bracket portions attached thereto. Each bracket has a curved interior side that corresponds to the exterior curved shape of a cooking dish insertable between the brackets and on top of the base portion. Attached to the second end of each bracket is a handle portion for gripping. A plurality of padded insulating pads are positioned on the top side of the base portion and the interior side wall of the brackets. In operation, the rack remains attached to the dish during cooking. When cooking is completed, the lid of the dish, which houses a fan and cooking element, is removed so that the rack serves as an insulated holding means whereby food may be served directly from the dish.

Abstract: The device for holding a built-in cooking apparatus, especially a glass ceramic cooking apparatus, in an opening provided in a cooking apparatus receptacle (1), includes a cooking apparatus housing (2) containing heating elements; a cooking apparatus upper portion including a cooking panel (6) and a border frame (4, 5) around the cooking panel (6); a releasable clamping connection device (3, 8) for releasably attaching the cooking apparatus upper portion from above with the cooking apparatus housing; and an attachment device (3) for attaching the cooking apparatus housing (2) in the cooking apparatus receptacle (1).

Abstract: A rotisserie cooking unit has a centrally configured heat source, a pair of removable spit carriers and a pair of removable covers which are configured to provide the function of covering and enclosing the unit and of opening up to serve as drip pans and ash catches.

Abstract: A cooking rack is provided for use with an aluminum foil pan. The rack comprises wire segments for supporting a food item to be cooked. The wire segments define a planar array and are disposed above the pan base. The rack includes a pair of oppositely disposed handles, including a hand grip overlying the pan rim and a clamp below the pan rim for clamping the rim therebetween. The clamp is movable to a retracted position for assembly of the pan to the cooking rack and for detaching the rack from the pan.

Abstract: A free standing collapsible, portable barbeque (1) adapted to be moved between a closed/folded configuration and an open/assembled configuration and from an open/assembled configuration to a closed/folded configuration thereby assuming the character of a portable suitcase; the barbeque comprising a substantially cubic receptacle (2) supported by legs (5, 6, 7 and 8) pivotally attached to the underside of the receptacle so that they fold inwardly to a plane parallel with the base of the receptacle.A lid (15) is pivotally connected to the receptacle which when open acts as a rear baffle and when closed as a cover for the receptacle.The barbeque has first and second side baffles (11 and 12) which are adapted to move independently of the lid (15) each pivotally connected to the base of the the receptacle and between a sidewall of the receptacle; and a well (37) formed within said receptacle which acts as a cooking waste trap.

Abstract: A roll-up portable table or cooking grill which presents, when in an open first condition for use, a relatively flat, substantially rectangular, upwardly facing table adapted to be supported to define a generally horizontal rigid cooking surface. When in a rolled up second condition for transport or storage, the table is configured to be contained within a generally cylindrical container. The portable table or grill includes a plurality of bars, each having a straight, stiff, longitudinally extending, central rod spaced from and mutually parallel with respect to every other central rod; and two generally J-shaped hook portions, one at each end of that rod. The J-shaped hook portions of each bar each include a shank, a first end of which extends integrally from one end of the rod. These hook portions each include a hook which extends integrally from a second end of the shank.

Abstract: The present invention provides a portable camp stove and barbecue grill which includes both a propane-fueled barbecue grill and a propane-fueled camp stove within the same unit. The unit stores compactly within its own case for ease of transportation and opens to cooking positions whereby both barbecue grill and camp stove sections can be used simultaneously. A metal smoker plate is substituted for lava rock in the barbecue section to facilitate compact storage, and a storable heat shield is provided which in its operating position underlies the barbecue section to keep the supporting surface cool.

Abstract: A barbecue pit is arranged to include a rotary shaft mounted in adjacency to the pit having an extension shaft, wherein a mesh basket is arranged for selective positioning over the barbecue pit for ease of access to the basket and for food components positioned thereon. A rotisserie housing is mounted to the basket structure in an intercommunication to permit selective rotation of the basket over the pit structure.

Abstract: A grill, which may be portable, includes an open support lattice surrounded by upright walls. The support lattice forms a plurality of adjoining bays each dimensioned to receive and support a fuel module in the form of a disposable non-flammable tray and charcoal briquettes within the tray. Various food supporting devices may be used to support items of food to be cooked on the upper edges of the walls or at selected lower levels by use of terraced steps cut out in the walls. By placing fuel modules in less than all the bays, both the size and the shape of the cooking area can be selected. When no fuel modules are used a flat plate can be placed on top of the support lattice on which conventional briquettes can be placed.

Abstract: A disposable system provides means for caterers to transport, serve, and display food, although the system may also be used by campers, picnickers, or the like. A plurality of bent wires and plastic legs are provided in a kit form which may be assembled into a knock-down stand for supporting disposable utensils. The plastic legs are shaped to avoid marring a supporting structure. The bent wires also support a suitable burner.

Abstract: A barbecue or outdoor grill or cooking assembly structured from a plurality of interlocking and cooperative components which are readily assembled and disassembled at a given site so as to allow the subject assembly to be easily installed and removed from a given location. The plurality of components define a substantially enclosed interior in which a grill assembly is adjustably positioned such that the grill portion thereof may be raised or lowered relative to a platform designed to support a fire bed or other heat generating source so as to regulate the heat applied to the food being cooked which is positioned on the adjustable grill portion of the grill assembly.

Abstract: A combination cooking rack and aluminum foil pan assembly. The rack comprises wire segments for supporting a food item to be cooked. The wire segments define a planar array and are disposed above the pan base. The rack includes a pair of oppositely disposed handles, including a hand grip overlying the pan rim and a clamp below the pan rim for clamping the rim therebetween. The clamp is movable to a retracted position for assembly of the pan to the cooking rack and for detaching the rack from the pan.

Abstract: A skewer device for barbecue cooking foods such as shish-kabob. The skewer device has a rod to which the food is attached and a pair of support members slidably retained on the rod at opposite ends of the food arrangement. The support members are ring-like in the preferred embodiment and elevate the food above the cooking surface. The support members loosely fit on the skewer so they may be tilted to frictionally engage the rod to secure the food and lock the members relative to the rod.

Abstract: A grill support is disclosed for supporting a barbecue grill in locations where a table is not available. The grill support may be attached to a ladder or to a balcony rail or similar support structure and includes a support platform supported in cantilevered manner spaced outwardly from the support structure. In addition an adjustment mechanism is provided whereby the support platform may be moved to a level position regardless of variations in orientation of the support structure.

Abstract: A collapsible picnic cook-stove comprising, in combination with a disposable pan-shaped fuel holding member for burning fuel, a first ring-shaped support defining an opening and to which are pivotally connected three or more circumferentially spaced legs. The legs function in an extended position to support the cook-stove in spaced relation to the surface on which the cook-stove is to be used and in a collapsed position lie substantially parallel with the plane of the opening and radially inwards of said first ring-shaped support. A comestible support is pivotally connected to the first ring-shaped support to overlie in one position the opening for cooking. A second ring-shaped support is constructed and arranged to receive and support the fuel holding member in suspension below the opening of the first ring-shaped support by three or more flexible chains.

Abstract: A barbecue device is disclosed, which includes a cooking support member in the form of a slightly concave plate or grid. A support is pivotally connected to the rim of the cooking support member with the support being rotatable from a stowed position, at which the support overlies the upper surface of the cooking support member, to an operating position, at which the support extends downwardly from the cooking support member. A handle is pivotally connected to the rim of the cooking support member with the handle being able to be rotated from a stowed position, at which the handle overlies the upper surface of the cooking support member to retain the support thereon, to an operating position at which the handle extends outwardly from the cooking support member. The handle includes an extension adapted to extend beneath the cooking support member in the operating position, which also acts as a stop against further pivotal movement of the handle.

Abstract: A barbecue grill assembly is disclosed including a bowl and domed, free-standing lid mating with each other to form a three-dimensional oval in combination, a support assembly being provided for the bowl with the brackets mounted on a portion of the barbecue grill assembly in spaced apart relation less than a corresponding dimension of the lid with extended surfaces and stops for causing the lid to move horizontally along the extended bracket surfaces and then rotate into a generally vertical position in cradled engagement with the brackets, an ash collector unit including vent means being suspended beneath a central portion of the bowl.

Abstract: A retractable barbecue grill trolley has a first plate and a second plate pivotally linked thereto to form a foldable base plate and four legs pivotally attached to the base plate. Each leg has an upper and a lower post connected by a leaf spring deposited in the lower post. Each upper post has an fixing mechanism to be fixed by a pivotal supporting beam having a plurality of threading holes.