Abstract: A display sign of box-like construction has internal illumination and a face comprising a transparent or translucent sheet with advertising material applied thereto. The face is tensioned by means of a locking element to which the face is attached and which is then forced into the gap between two surfaces. The element is serrated and one of said surfaces includes a detent which co-operates with the serrations. The pull exerted by the tensioned face pulls the locking element into a position in which it lies skew to said surfaces and bears on both said surfaces with the detent between adjacent serrations. There can be one or more locking elements along each edge of the sheet, or one or more locking elements along one edge of the sheet only. The sheet can be tensioned by locking elements acting in two directions which are at right angles to one another.

Abstract: An light-energy initiated firing system for a firearm in which optical light-conducting fibers extend from a source of high frequency energy to adjacent a cartridge so that energy passes through the fibers will pass into the cartridge and initiate a propellant therein. The firearm cartridge may include a ignition composition (e.g., a primer) position forward of at least part of the propellant and be constructed so that high frequency (e.g., laser) energy will pass into the cartridge and initiate the forward-positioned propellant. The system includes safety systems for interrupting the energy path to prevent primer initiation when the action of the firearm is not in battery or when such initiation otherwise is undesired.

Abstract: This invention utilizes a conventional type cartridge orienting device for orienting cartridges with their longitudinal axes aligned generally parallel with one another. The present invention includes a hollow receptacle having a cartridge accepting device. This accepting device includes a stop wall to allow only one oriented cartridge to drop into the accepting device at a time. A rotatable cam is provided within the accepting device. Upon rotation of the rotatable cam, cartridges are grasped and moved away from the accepting device and transported by the rotatable cam upon further rotation thereof to the receiving end of a conventional magazine. The cartridge is then forced into the magazine when the rotatable cam is further rotated.

Abstract: A fish net constructed of conventional open mesh flexible net material is provided with an aperture having an escape panel secured therein. The escape panel is comprised of extruded plastic net material which is substantially rigid to maintain the mesh configuration while permitting slight bending of the panel. Thus, undersized fish can escape through the mesh of the escape panel without being gilled.

Abstract: A flat line boom apparatus holds a fishing rod on a boat and guides a fishing line laterally outward from a gunwale of the boat so that the line resists entanglement with other fishing lines also extending from the boat. The apparatus includes a cylindrical sleeve which slides into a conventional fishing rod holder mounted in the gunwale of the boat. The sleeve is secured within the rod holder utilizing a bayonet lock to engage the cross pin of the rod holder. An annular collar is detachably connected to the sleeve so as to allow rotation of the collar about the sleeve. An elongate boom is attached to the collar so as to extend laterally outward from the gunwale of the boat. A fishing line clip is attached to the end of the boom for releasably retaining the line near the surface of the water. The line guide releases the line when a fish strikes. A shock cord extends between the boat and the end of the boom to provide additional support for the boom.

Abstract: A bait-carrying fishing hook has an eye, a shank, a rearward bight terminating in a point, and a resilient leg connected to the forward end of the hook and projecting from the front of the hook. The leg has a curve adjacent its connection to the hook which curve may be exaggerated into a bow of the leg such that the center of the leg is further from the shank than the ends of the leg. The remaining portion of the leg may be held by an offset catch at the rear of the hook. The shank, catch and leg, when received in the receptor of the catch define a closed loop bait holder for holding bait on the resilient leg. A fishing lure includes a body having forward and rearward attachment eyes, a hook extending rearward from the body, a bait-carrying fishing hook and a flexible tether connecting the bait holding hook to the eye on the body.

Abstract: A fish lure, including a rigid body and interchangeable body sleeves, telescopically attached to the rigid body, whereby a variety of bait configurations can be used on the same lure in accordance with particular fishing conditions.

Abstract: A fishing hook holder unit includes a holder body having a first end, a second end, and a neck portion between the first and second ends. A first engaging member is removably mounted to the first end of the holder body for engaging a fishing line from one of a fishing rod and another fishing hook holder unit. A second engaging member is removably mounted to the second end for engaging a fishing line from one of another fishing hook holder unit and a sinker. The holder unit further includes a hook-attaching member which has an engaging portion for securely engaging with the neck portion of the holder body, a mounting portion pivoted to the engaging portion, and a third engaging member removably mounted to the mounting portion for engaging with a fishing line from a hook.

Abstract: A device for supporting fish hooks and the like from a fishing line such that fish are prevented from swallowing the hook more than mouth deep. The device includes a vertical shank suspended from the fishing line, a lateral guard member attached to the shank, and a support for attaching the fish hook at or below the level of the guard structure. In one embodiment, the lateral guard is a removable guard wire which is frictionally locked to the shank upon insertion through tubular lateral supports. In a further embodiment, the invention includes a swing limit retainer to prevent the fish hook from snagging on the guard wire.

Abstract: The invention relates to a portable luminous trap for flying or crawling insects. A fluorescent lamp in the center of an insect ingress zone attracts the insects. Transparent baffles radiating outwardly from the lamp act as walls and an insect hitting a baffle is stunned and drops downwardly, through a funnel opening into an entrapment container therebelow. The funnel also helps prevent escape of still-living insects from the container. An alkaline dry cell battery powers the lamp, test circuits for the battery and the lamp, and a clock circuit. A photocell is used to activate the trap at dusk and the setting for the clock circuit determines the length of time that the lamp is activated each night.

Abstract: A chaise lounge and upright chair, representing two embodiments of the invention, each having a frame with tubular components forming a primary air plenum having a predetermined orientation with respect to an occupant in a normal position sitting on the upright chair or lying on the chaise lounge. A blower unit is connected to the air plenum and the tubular components have a plurality of air nozzles with axes pointing in specific directions to produce air stream barriers which cover and bathe the occupant of the chair. Opposed rows of air nozzles, on opposite sides of the occupant, have axes pointing outwardly from the chair and laterally inwardly to intersect at approximately a vertical centerline plane of the chair to cover the occupant between the two rows of nozzles. Additional nozzles protect other parts of the occupant so that in both embodiments, air stream barriers are produced which protect the occupant from head to feet.

Abstract: An insect attracting and killing device employs a translucently diffused light source to attract insects and operates in conjunction with a fan-driven air flow to draw the thus attracted insects inwardly into contact with an electrically charged grid.

Abstract: The present invention relates to a device for climbing up trees and for maintenance of trees having trunks which do not branch out but rather have a single stem, such as palm trees or coconut trees.

Abstract: A mulch product and method of making same wherein the resultant mulch product includes a shredded fine portion, a bulky portion, and a stringy binding portion. When water soaks through the distributed mulch product, a relatively impervious mat is formed which is resistant to ordinary environmental effects. The mulch is preferable manufactured from an insect and rot resistant wood. The mulch product is manufactured using a swinging hammer type of wood hog using a surrounding screen having a plurality of holes of not less than approximately 2 inches across.

Abstract: A landscape edging assembly which includes first and second elongated strips of material having longitudinal top and bottom edges and being adapted for use as landscape edging. The strips are adapted for end-to-end alignment along longitudinal axes thereof with mutually adjacent ends of each of the strips having an end segment that is laterally offset with respect to a remainder segment by an amount that is equal to or just slightly greater than a thickness dimension of the strips. The end segment and the remainder segment on each strip are integrally connected by a transversely extending segment and having an edge opening slot on the top edge of one of the strips and on the bottom edge of the next mutually adjacent strip. Each slot extends generally halfway into the strip from a respective edge, leaving a remainder transversely extending segment joining the end segment and the remainder segment on each of the strips.

Abstract: This invention relates to stands for cut trees, such as Christmas trees, and more particularly, it relates to a tree stand which permits the tree to be mounted vertically even when the tree trunk is bent.

Abstract: A floral stand which is designed to display flower or branch arrangements in any desired orientation, including horizontally or upside down. The stand is a hollow shell made of a light weight plastic material and formed into any pleasing shape desired for flower display. Inside the shell are located air-tight compartments for holding liquid nutrient. Each compartment includes a hole for insertion of a flower stem into it and a means to grip the stem tightly. The air-tight nature of the compartments, the stem gripping means and the relative difference in pressure between the inside of the water filled compartment and the outside air, prevent the possibility of any significant fluid leakage from the stand in any orientation and under normal handling conditions.

Abstract: Horticulture, particularly limb spreaders. Applicant's variable length limb-spreader may be interposed between the tree central leader and the outwardly extending limbs at a variety of lengths, for example, 3", 6", 9", 12", 15", 18" and 22". Applicant's molded plastic device includes an elongate shaft having pairs of divergent tree-engaging arms at each end and a plurality of outwardly extending limb-engaging struts extending from the top and bottom of the shaft. Tree-engaging spikes may be molded so as to extend between the pairs of arms, as well as between the struts and the top and bottom of the elongate shaft.

Abstract: A planter grid wall is formed by intersecting groups of metal strips, joined together and spaced apart to form a network of open cells. The strips have equal dimensions, with inner edges defining the open ended chamber of the planter, and outer edges defining the planter periphery. The distances between the inner and outer edges is at least one half the size of the cells to facilitate retention of growing medium within the planter. Yet the open cells permit the process steps of aeration of the planting medium and "air pruning" of roots that grow into the cells and out into contact with the surrounding ambient atmosphere. The inner edges also include abrupt sharp corners that engage and mechanically prune the roots, thereby avoiding spiral root growth and encouraging growth of short new root ends. A reflective, insulative coating on the strips aid heating of the plant medium by reflection and prevent conductive and convective heat loss through the strips at night time or in cold conditions.

Abstract: The present invention relates to a soil-less sand based root zone medium for the production of sod. The present invention is also directed to a method for the production of sod using a soil-less sand based root zone medium and a sod mat produced by the method of the present invention.

Abstract: The present invention is directed to a locking slide block slidably and pivotably mounting a window sash to a side member of a window frame having a vertical jamb channel. The locking slide block has a housing with oppositely disposed sliding surfaces for guiding the housing in the jamb channel. Operably connected to the housing is a locking means for selectively engaging the jamb channel and locking the housing in a fixed position, and a cam for selectively operating the locking means. A sash pivot operatively connected to the cam is operably connectable to the sash. The housing also has a sash pivot retainer spring. A retaining means is utilized to protect a free second end of the retainer spring from bowing and deforming due to forces applied to the window sash in operation.

Abstract: A sliding door adapted to operate an entrance of a large-sized freezer or the like and capable of facilitating operation at the initial stage of opening of the door. Upward elastic force of elastic suspensions constantly acts on a door body, so that the door body may be suspended while being raised from a floor, when the door is kept at an open position. Also, when the entrance is kept closed with the door, a driving wheel strikes on a tapered section of a lower rail surface to cause a bottom packing of the door body to be pressed on the floor against upward elastic force of the suspensions.

Abstract: A counterbalanced door assembly particularly suited for heavy-duty load bearing applications such as sidewalk access doors, and for precasting into concrete slabs, comprises a door, a frame surrounding the door, a hinge connecting the door to the frame for rotation about a first axis, a torque rod arm mounted to rotate about a second axis displaced from the first axis, and one or more torque rods. One end of the torque rod arm is connected to the torque rod to twist the torque rod as the torque rod arm rotates about the second axis thereby generating a counterbalance force. A force control mechanism, which may be a cam with a properly shaped cam surface or a link hinged at either end, receives the counterbalance force from the torque rod arm and applies it in a controlled direction over a controlled effective moment arm relative to the first axis to generate the desired counterbalance torque.

Abstract: In a ball lapping machine in which balls are machined by lapping between two lapping plates, namely a stationary plate and a turn table, the structure is arranged with a central shaft having a common center line with a sleeve rotative around the center shaft, a housing supporting the sleeve rotatively, a stationary plate on which the aforesaid central shaft is mounted, and the turn table on which the aforesaid sleeve is mounted. With such structure, the aforesaid center line is made inclinable at appropriate angles to the vertical.

Abstract: The present disclosure is a portable air angle head random orbital unit. It provides a novel random orbital collect unit for the spin unit of the portable air angle head random orbital unit. A sander, polisher or eraser head can be attached to the portable air angle head random orbital unit and rotates in a unique random orbital rotation.

Abstract: An apparatus for sanding a work piece is provided which includes a mounting surface for abrasive strips and has an axis of rotation. Several of these strips are oriented radially with relation to the axis and laterally to themselves and at least a portion of the strips are surfaced with an abrasive material. These strips are optionally attached to mounting sleeves having a first elastic sleeve adapted to be fitted over the mounting surface. The apparatus preferably includes at least one telescopic housing. Within the housing is a drive shaft including a flexible drive shaft portion and a telescopic drive shaft portion. A motor drive system is also provided. A pivot mechanism is also provided to pivot the drive shaft and the axis of rotation of the apparatus.

Abstract: A tool holding jig for a grinding machine has a tool holder 29 mounted on a parallelogram linkage having lower swivel rods 19 inclined slightly so that, as the tool holder 29 is rocked to and fro across the face 31 of a grinding wheel by a reciprocating drive arm 53, the grinding pressure is greatest at the center of the rocking motion.

Abstract: A method and system for applying a water gathering and channeling roof covering onto the upper roof of a building, which roof is at least slightly pitched, wherein fully annealed sheets of at least 99% titanium with a thickness of less than 0.020 inches are preformed into roof pans with right hand and left hand edges thereof formed into matching, longitudinally extending standing seam elements. The pans are placed in adjacent, abutting relatinship with one another and joined together by press fitting adjacent standing seam elements into a standing seam extending along the roof's pitch and forming a water collecting trough for gathering potable rain water.

Abstract: A fire stop device adapted to close an opening in a wall or floor having a plastic pipe extending through the opening when the pipe is destroyed by fire which comprises a base plate surrounding the opening having a collar projecting at right angles and attached to the base plate and adapted to surround the plastic pipe and means for automatically closing the collar opening when the plastic pipe is destroyed by fire.

Abstract: Disclosed is a mobile stage including a forestage with concealed footlights, a roof connected to the forestage by a telescopic frame assembly, a sky drop mounted on the telescopic frame assembly and disposed between the roof and the forestage, a visual display terminal mounted on the forestage at the front, stage ighting fixtures mounted on the roof and the sky drop, and a distributing box mounted on the forestage at the back for power supply control.

Abstract: A panel system for office workstations wherein a display board is removably secured to a hanging bar, The bar has a bracket assembly for selectively and removably hanging it onto a selected surface and has flanges arranged in the bar which may receive the bracket assembly and which removably secure the display board on the hanging bar when the display board is oriented with the flanges in a predetermined position. The display board has a frame defined by top, bottom and side extrusions and corner members joining the extrusions together, utilizing channels arranged in the extrusions, and hangers slideably fixed in the extrusion channels which are adapted to be secured in channels when properly oriented therewith. A tray may also be removably secured in the channels of the display board extrusions in selected removably secured positions.

Abstract: A child's playhouse includes interfolded panels arranged for ease of assembly relative to one another, including hinged interconnection, wherein the top wall includes a pop-up plate having an accordion pleated member extending between the pop-up plate and the top wall to provide for ease of projection of a structure relative to the top wall.

Abstract: A hazardous material container storage building comprising a plurality of modules, each module having a floor for supporting containers of hazardous waste materials and tubes underlying the floor. In one embodiment, a first and second module are provided. A mechanical joining mechanism extends through the first module tube and the second module tube for securing the first module to the second module. The first and second modules are joined to create a single, unitary hazardous waste material storage building. A related method is also provided. Another embodiment of a hazardous waste material container storage building comprises providing a plurality of modules, each having a securing member disposed on the roof of each module. Two modules are joined by connecting a fastener to the securing members of each respective module. A related method is also disclosed. The first and second embodiment may be used in the same installation.

Abstract: A stanchion unit assembly for supporting floor boards comprising: a plurality of vertical stanchion units including rests which constitute the upper portions of the vertical stanchion units and support the floor boards, and base plates which constitutes the lower portions of the vertical stanchion units and are disposed in contact with a floor foundation; a plurality of oblique member support stanchion units including rests which constitute the upper portions of the oblique member support stanchion units and support the floor boards, and base plates which constitute the lower portions of the oblique member support stanchion units and are provided with oblique member support parts; a plurality of floating rests supporting the floor boards on the tops of the floating rests and provided with oblique member support parts at the lower portions of the floating rests; and a plurality of oblique members extending from the oblique member support parts of each of the oblique member support stanchion units to those of t

Abstract: An inexpensive garden stake to provide physical and structural support to growing plant life is disclosed. The invention provides an improved device for providing an anchoring base to the supporting stake which increases the useful life of a garden stake. The anchor has legs which expand upon implantation. The increased support provided by the anchor reduces the need for replanting or disturbing the plant in a significant manner.

Abstract: A truss assembly for supporting showcases and the like includes a straight open box tube with end caps arranged for fitting over to close the box tube ends. A tension rod is fitted through the box tube and passes beneath a fulcrum arranged across the middle of the box tube, proximate to the inner surface of the box tube bottom, with the tension rod ends threaded and passed through holes that are formed through the end caps to receive a nut turned thereover. The nuts are turned against the end cap outer surfaces so as to create a tensile stress in the tension rod that is exerted through the fulcrum, tending to lift the fulcrum and box tube middle section, bowing the box tube upwardly counter a weight of a showcase containing items supported thereon, whereby the box tube is bent back to essentially a horizontal attitude. The truss assembly of the invention further provides for mounting the box tube ends to vertical support members so as to extend therebetween, maintaining a showcase thereon.

Abstract: A composite, prestressed structural member, such as a bridge unit and methods of forming such a member. The apparatus includes a plurality of longitudinally extending girders which are transversely spaced and a plurality of adjacent composite units disposed on the girders. Each composite unit has a plurality of beams with a molded deck portion formed thereabove. The beams are positioned transversely with respect to the girders and attached thereto. Additional, longitudinal beams are disposed between the transversely extending beams over the girders. The longitudinal beams are attached to the girders and by connectors to the molded deck. The structure is formed by positioning the girders on a construction support adjacent to a center portion of the girders such that the free ends of the girders cantilever and deflect downwardly. The beams of the composite units are attached to the girders in this construction position. Any gaps between adjacent composite units are filled with a non-shrink, high strength grout.

Abstract: A device for fitting glass facade elements to a building facade, in which the facade elements are glued to profiled sections which are secured to the building facade by means of fastener devices, such as screws. The invention is characterized in that the device includes three parts, a first part (2; 22) intended to be fastened in the facade, a second part (3; 23) which is intended to be glued to the upper edge of the facade element (1), and a third part (4; 24) which is intended to be glued to the bottom edge of the element (1) . The first part (2) includes an upwardly facing channel (7) which is intended to coact with a downwardly extending tongue (8) belonging to the third part (4; 24), and further includes a downwardly extending tongue (9) which extends parallel with the channel (7) and which is located on a lower level than the channel (7) and which is intended to coact with an upwardly open pocket (10) belonging to the second part ( 3; 23).

Abstract: A screed post assembly which may be easily and quickly interfaced to a Nelson stud extending upwardly from a horizontal support beam used in the construction of a building framework. The screed post serves as a support for a screed support system which is used to conduct a leveling operation for a concrete pour during the formation of a composite deck. The screed post assembly is also adapted to be extendable over a rebar member and used in the assembly of a protection device which covers the top, exposed ends of a plurality of linearly aligned, upwardly extending rebar members.

Abstract: A cross-brace for a pair of joists has inclined brace members extending in vertical X-shaped array and a horizontal member rigidly connecting outer ends of two of the brace members and forming a horizontal strut between the outer ends. The cross-brace has flat lateral extremities, with flat vertical laterally outermost surfaces, for surface-to-surface abutment with opposed sides of the joists, the flat lateral extremities allowing the cross-brace to be entirely accommodated between the opposed sides of the joists.

Abstract: A wooden structural member for use as a stud in the wall of a building is formed from two strips of wood separated simply by elongate pins at right angles to the length of the strips. Each pin has pointed ends which are punctured into the wood of the strips to provide a frictional engagement therewith. After formation of the structural element, it is formed into the wall of a building and services can be threaded through the space between the strips following which insulation material is applied between each stud and the next and in between the strips thus increasing the insulation value of the wall, reducing the amount of lumber required and simplifying construction.

Abstract: A filling and capping machine including a computer controlled turret having a plurality of pockets for positioning a plurality of containers to at least a fill position and a capping position along the turret's path. The controller programmably positions the turret to these positions for variations of the locations of the pockets on the turret and accommodates for variations in the size and number of the container pockets and the type of fill product and type of containers. The controller also controls the position of the filling unit for the type of fill product as well as controlling the positioning of the filling unit and the capping unit for variations in the type of container. The controller uses a combination of servo motors and fluid motors to vertically and rotationally position the elements.

Abstract: A conveying device with levers for wrapping machines for delicate products equipped with a gripping device for strips of material for wrapping products. The device has a supporting structure sliding on a radial guide which forms part of a carrousel conveyor revolving around a support placed on a supporting plate; a first operating lever for conveying the products, rotates around a first pivot supported by the supporting structure; a second operating lever for conveying the products rotates around a second pivot supported by the supporting structure; a limit stop for the movements of one of the levers is integral with the supporting structure, the purpose of which is to cooperate with one of the said operating levers, constitute a gripping device for the strips.

Abstract: This applicator mitt includes an inner pouch and an outer pouch providing a cover for the inner pouch. The inner pouch includes an outer face receiving a treating substance and is formed from a pair of panels, attached on two sides and one end and having separable margins on the other end to receive the hand portion of the user. The outer pouch can be a simple envelope or can be formed from a pair of panels attached to each other and to the inner pouch, said panels being removable to expose the inner pouch treating substance but remaining attached to the inner pouch during use.

Abstract: A chair has a removable back portion and a base portion connectable by unique female/male tapered connectors attached to the base portion and back portion with the base portion being shaped and dimensioned to be received in a carton having a tapered rear portion provided by diagonal vertical panels on opposite sides of a rear vertical wall panel with the base carton being shaped and dimensioned so that the sum of its girth and height do not total more than 130 inches so that the carton can be shipped by a parcel service shipping company such as UPS rather than by regular freight with the back being separately shipped in a separate package so that total shipping charges are much less than regular freight charges.

Abstract: A bag clamping device for holding a bag to be filled, especially a bag with side folds, on a filling neck, the bag clamping device being formed by: a first pair of clamps, each comprising clamping members for holding opposed first bag wall segments on the filling neck, and a second pair of clamps each comprising pairs of clamping members, the pair of second clamping members comprising first surface parts which, in pairs, rest against one another in such a way that any bag wall parts positioned in front of the end faces are gripped and held in the bag edge region, as well as second surface parts which are arranged at an angle relative to the first surface parts which are adapted to the end faces and guiding plates of the swung-out expanding flaps for the purpose of holding the remaining free bag wall parts tightly around the filling neck.

Abstract: A steplessly adjustable pre-stretched film wrapping apparatus comprises a downstream film roller and an upstream film roller connected therebetween with an adjustable power transmission system to unwind and stretch a film web from a film roll. The power transmission system comprises a motor generating a rotational motion to drive a main shaft. A pair of mating bevel gears are used to transmit the rotation to the downstream film roller and a disk member which is secured on the upstream film roller and is driven by the main shaft via an active roller coaxially rotatable with the main shaft and an idle roller interposed between the active roller and the disk member to rotate the upstream film roller. The idle roller is contactingly rolling on a side of the disk member to be rotatably in an orthogonal way and thus defining a distance from the center of the disk member which determines the speed ratio therebetween.

Abstract: A recharging system for a battery operated tool such as a lawn mower. A slidable cover is used which is movable between an open position and a closed position. The slidable cover alternately exposes a receptacle adapted to receive a removable fuse key and an electrical connector adapted to receive an electrical power cord. The receptacle and the electrical connector are longitudinally aligned with the cover so that for the cover to move to the open position and expose the electrical connector, the fuse key must be removed. The receptacle is electrically connected in series with an activation switch, the battery and the electric motor to form a motor circuit. When the fuse key is removed to expose the electrical connector, the motor circuit is broken which prevents the electric motor from being activated whether or not the activation switch is engaged.

Abstract: A unidirectional drum roller for a baler of large cylindrical bales. A plurality of ramped steps extend longitudinally along the periphery of a substantially cylindrical drum. Each ramped step includes a steeply inclined leading edge portion and a gradually inclined following portion. The unidirectional construction provides a drum roller which has aggressive feeding action but allows a counter-rotating forming bale to slip past in the non-driven direction. The ramped steps are formed from a single sheet of material by die stamping so that there are no crevices or interstices on the drum roller to trap crop material and the drum roller is essentially self-cleaning.

Abstract: A position locking mechanism for a windrow inverter having a wing draper attachment mounted on the frame of the windrow inverter on the opposing side of the transverse cross conveyor from the discharge chute and being manually movable between a horizontal operative position and a vertical transport position is disclosed wherein the wing extension is latched automatically when raised to the transport position. A rod connected to the pivotally movable wing extension is telescopically received within a bracket mounted to the frame of the windrow inverter and is appropriate notched and biased into engagement for fixing the wing extension when placed in both the operative and transport positions. A concentric compression spring mounted on the rod reduces the effort required to lift the wing extension into a raised transport position. A set of elastomeric bumpers requires the wing extension to be forced into the operative position to be latched.