Abstract: A vehicle having drive wheels subject to significant vertical movement is equipped with an endless track system that includes rollers mounted on the main frame ahead of the drive wheels, and track belts extending around the rollers and the main drive wheels. The roller axis is considerably displaced from the pivot axis of the beams carrying the drive wheels, and means are provided for accommodating the variations in distance between the pivot axes as the drive wheels change position vertically with respect to the main frame.

Abstract: This hydrotherapy machine has a top-opening tank with a floor spaced above the tank bottom. The periphery of the floor is spaced from the tank wall. Liquid under pressure is admitted to the space between the floor and the tank bottom, and proceeds upwardly through the gap between the tank wall and the floor. The circulation continues along the tank wall, and downward to a central outlet traversing the floor and the tank bottom. An inward radial flow at the top completes the primary circulation pattern.

Abstract: A filter plenum module has upper and lower peripheral frame extrusions providing vertically opposite and facing channels receiving side panels secured with fastenings traversing the inner flanges of the channels to engage the panels. Top closure panels are received on horizontal flanges of the top peripheral frame. Fastening and caulking are thus applied all from the inside, as the modules are constructed. Top panels are interconnected by reinforcing beams carried exclusively by the panels. These beams provide the principal support for the grid beams supporting the filter units. The peripheral beams also carry terminals that can be selectively placed to support the plenum assembly, according to the conditions available in the ceiling structure at the point of installation. Angle members are inserted in receptacle channels at the mitered corners of the peripheral beam extrusions for initial alignment.

Abstract: A U-shaped frame has opposite pivoted jaws adapted to move to and from a position closing the frame gap. A releasable locking member is pivoted to the frame in half-bearings, and is held in place by a cover plate that similarly retains the journals of an actuator plate responsible for closing the jaws around an entered wheel. The locking member is rotated out of locking position by forces on a handle that cause the chair to be pushed out of the retainer coupling. Placement of the locking member in the release position causes warning projections to appear above the housing, and these retract into the housing when the unit is in locked condition.

Abstract: This blueberry harvesting machine is a side-by-side attachment to the standard farm tractor, secured to the tractor by the usual 3-point hitch. An outer wheel on the attachment supports much of the weight of the machine. A simplified beating mechanism knocks the berries loose from the bushes to fall on a collection system that extends ahead of the beaters and the frontal portion of the machine to receive berries knocked loose by the approach of the machine.

Abstract: A file-drawer cabinet with a retracting panel normally covering the top drawer opening has cut-out areas on the front flanges of the cabinet corner members. These flanges are partially overlapped by the side edges of the lower drawers. The top drawer cover panel retracts through the cut-out areas, making the top panel width equal to the width of the lower drawers.

Abstract: This folding shelter has a canopy that can be attached to a folding chair, and removed easily for portability. Struts engaging the back structure of the chair support the canopy under a degree of tension. The canopy has a top panel and depending side and back panels, the latter being detachably secured to the back structure of the chair. Preferably, retractable bearing plates are provided at the lower extremities of the legs of the chair. An optional skirt panel is also provided extending around at least three sides of the chair, and attachable to the side and back panels, with auxiliary support extending from the chair to position the lower rear extremities of the skirt panel.

Abstract: This stroller has a series of seats at cut-out areas in a tray supported on columns secured to a wheeled floor panel. A tongue is also secured to the floor panel, the entire assembly being marketable as a kit of a easily assembled components. The seats are slings of fabric, the ends of which traverse slots in the tray. These are secured with dowels engaging loops in the fabric above the tray. The slots are enlarged on the top surface of the tray to retain the dowels against endwise slippage.

Abstract: A desk and a half-wall are combined to make the space within the wall available for the storage of wires and equipment associated with devices in use on or adjacent the desk. The half-wall extends above the desk top, and has a slot traversed by the wires leading out to the devices. Brackets that also traverse the slot can be used to support the devices well above the desk surface. The inner panels forming the half-wall are adapted to support shelves under the desk.

Abstract: A metal work sheet is prepared for routing operations by securing it to a backing panel with a releasable contact adhesive. The coated panel is initially covered by a release sheet, which is removed prior to the placement of the metal work sheet. Areas isolated by the routing can be pulled free of the adhesive, and the remaining work sheet can also be removed without adhesive contamination of the metal parts.

Abstract: This marking template is preferably made from die-cut uncorrugated cardboard with slots and holes adapted to position a marking tool to define the positions of cuts and holes to be made in a piece of material. Provision is made for cuts to be made at compound angles by forming the slots to intersect a fold line in the template, or extend on opposite sides of it, the slots forming an angle other than perpendicular to the fold line at one or both sides of the fold line. The slot portions for each cut are coplanar. The portions at opposite sides of the slot thus form the traces of a cutting plane disposed at an angle to either of the faces of the template. The template is adapted to be provided in a plurality of sections with respect to length through the use of interengageable slots and tabs, or by nails engaging aligned holes, that assure longitudinal and transverse alignment of the template sections.

Abstract: A shiftable block puzzle comprising a frame with means for retaining a plurality of shiftable blocks and at least one object piece and with allowance for perpendicular movements. The shiftable blocks remain on the playing surface, whereas the object piece is selectively removable or insertable through at least one opening in the frame.

Abstract: A lightweight machine for drilling a pattern of fastening holes in panels of installed roofing insulation is movably supported on rollers that rest on the panels without substantially deforming them. The machine is maneuvered by a handle, and vertical movement of the handle lowers a template carrying a gang of drills. The drills proceed through a central opening in the frame of the machine to engage the panels in the sub-roof structure on which they have been installed.

Abstract: A beam is mounted horizontally for rotative oscillation, preferably across the stern of a boat. The beam is adapted to carry a plurality of rod-holding receptacles oriented transversely to the beam. The beam has a radius arm engaged by an eccentric driven by a gearmotor resulting in the up-down movement of the rod as the beam is rotatively oscillated. This movement of the rods takes place in a vertical plane parallel to the centerline of the boat, and the arrangement permits the lateral separation of the rods necessary to eliminate any overlay of the fishing lines which would be likely to cause them to become entangled. The crank and radius arm mechanism provides an enhanced rod movement, with the rods moving upwardly and downwardly at different rates of speed, which produces enhanced lure movement through the water. This action is adjustable.

Abstract: This air filtration module has a rectangular housing separated vertically by a horizontal partition into upper and lower chambers communicating through a central opening in the partition panel. The lower chamber provides for distribution of air flow over the tops of filter units supported by the module below the distribution chamber. A blower is mounted at one end of the upper chamber, which discharges high-velocity air past the central opening in the partition panel, and into an opposite end of the upper chamber, where the velocity energy is converted to some degree to a lower velocity pressure energy. A ring surrounding the central opening above the partition panel stiffens the panel, and also provides support for an adjustable damper. The air intake through the module is drawn in by the blower through a preliminary filter in a frame horizontally opposite a bridge structure across the top of the module that supports the control devices associated with the blower.

Abstract: A vandal resistant upholstered seat or seat insert comprises a substrate formed of a hard material such as plastic, fiberglass, steel or the like; a vertical pile fabric having a non-coated backing covering the outer surface of the seat insert, with the vertical pile fabric including a plurality of generally upright fibers embedded in a backing material, with the fibers and the backing material being formed such that the backing and vertical fibers are accessible to a liquid adhesive applied to the underside of the backing material; and a layer of high-strength adhesive permeating the backing material from the underside and bonding securely the backing material and upright fibers to the substrate, the adhesive providing a fabric to substrate bond that exceeds the tensile strength of the fabric itself or has a peeling strength of at least twenty-five (25) pounds per inch width of fabric.

Abstract: A protective bar assembly for a motorcycle comprising a side bar assembly that extends along the side of the motorcycle and operator and a vertical, U-shaped roll bar that extends upwardly from the side bars to a point above the operator. The side bars are mounted on transverse front and rear bars mounted on the frame, with the rear bar being mounted behind the seat and above the rear wheel. A vertically movable headrest is mounted on the roll bar and a storage container is removably mounted on the back of the roll bar.