Abstract: A display device for holding and exhibiting placards and the like such as business cards, wherein a plurality of opentopped, card-receiving pockets are arranged on the front face of a main, plate-like body of a main, plate-like body of the display device; each card-receiving pocket is capable of receiving a plurality of placards in the form of a stack or batch and maintaining such placards in a neat upright stack with the outer face of the outermost placard of the stack clearly visible to a casual observer; the card-receiving pockets are integrally formed with the main plate-like which is made of transparent plastic material and permit a single placard to be easily grasped by the fingers of a person and removed therefrom.

Abstract: A dual purpose device usable in conjunction with a conventional fishhook to either retain fishing bait in the form of a semi-plastic generally globular mass of fish food on and substantially concealing the barbed end of the fishhook or, alternatively, to serve as an inorganic artificial lure alone or in combination with a live bait also attached to the fishhook; the device is made of a single elongated ribbon of non-metallic, resilient material and is in the form of a helical coil spring with each coil having a generally frustoconical shape in side elevation so as to provide a helically extending wall which projects radially outwardly from the longitudinal axes thereof and longitudinally toward one end thereof; the shank portion of the fishhook extends longitudinally through the coils of the device and is frictionally secured thereto; the device may be made in a variety of colors.

Abstract: A portable, universally adaptable water control device for use in conjunction with any conventional aquarium and for incorporation into the recirculation water filtration and aeration system thereof for automatically maintaining a predetermined level of water in an aquarium tank and for continually removing water solely from the top surface of the water contained in the aquarium tank and filtering and aerating the same when in operation; the water control device is adapted to be supported on a wall of the aquarium tank and includes an open-topped overflow receptacle positioned within the aquarium tank, an open-topped pre-filter receptacle positioned externally of the aquarium tank having its interior divided into a water-receiving compartment and a drainage compartment by a vertical partition wall, and a siphon tube for transferring water from the bottom of the overflow receptacle to the bottom of the water-receiving chamber; the siphon tube has both of its ends at the same level which level is below the leve

Abstract: A readily fabricated, compact toroidal or radial heat exchanger assembly (10) including fore and aft ring-like distributor tanks (11,12) and a generally circular core assembly (13) sandwiched therein between. The heat exchanger assembly (10) additionally includes a rotary blower (14), positioned radially inwardly of the core assembly (13) and distributor tanks (11,12), which is adapted to draw air axially and force the same radially outwardly through the core assembly (13) and around the distributor tanks (11,12). The ring-like distributor tanks (11,12) are provided with the interior and exterior fins (44,39) which function as heat transfer surfaces and thus the tanks (11,12), per se, are utilized as heat dissipating means along with the core assembly (13).

Abstract: A motor truck door check and holding device comprising a spring bar having a cylindrical end portion pivotally connected to a swingable hinge half and having an elongated cam portion passing through an opening in the stationary hinge half. The cam portion has a hump which passes through the opening and springs upwardly and engages with the solid surface around the opening to hold the door in an open door position.

Abstract: A motor truck hood opening damper restraint in the form of a vertically mounted, hydraulic hood damper or dash pot which restricts the speed of travel of the hood past an overcenter position, cushions the hood at the stop at the open position and permits unrestricted speed of travel when closing the hood.

Abstract: A hardened agricultural disk, which is manufactured from a straight rolled steel, is provided with concentric rows of softened oblong areas or oblong openings, which are arranged radially inwardly of the periphery of the disk in non-diametrical alignment and in such a manner that a directional radial crack must pass into one of the areas, or openings, in one of the concentric rows, and be arrested in that row.

Abstract: A fusible terminal device for protecting electrical cable networks from detrimental effects of overloads.

Abstract: A tilt steering column mechanism having two brackets, one of which is connected to a cab frame member and the other of which is connected to a steering column and is slideable within the first bracket upon tilting or pivoting of the steering column about a point remote from the second bracket. The first bracket carries a slideable lock bolt, which is spring-biased in one axial direction, and has a raised frusto-conical portion thereon which cooperates with any one of a number of uniformly spaced frusto-conical receptacles provided in the second bracket. A handle, pivotally mounted to the first bracket, causes the sliding of the lock bolt through the intermediary of a toggle link, which in the dead center position, together with the bias of the spring, holds the frusto-conical portion in the selected frusto-conical receptacle.

Abstract: A tilt steering column mechanism having two brackets, one of which is connected to a cab frame member and the other of which is connected to a steering column and is slideable within the first bracket upon tilting or pivoting of the steering column about a point remote from the second bracket. The first bracket carries a slideable lock bolt, which is spring-biased on opposite ends in opposite axial directions by a plurality of springs of differing magnitude, and has a raised frusto-conical portion thereon which cooperates with any one of a number of uniformly spaced frusto-conical receptacles provided in the second bracket. A handle, fixedly mounted to one end of the lock bolt causes the sliding of the lock bolt through the intermediary of a rotary cam and pin follower, which pin follower, in the raised cam land position, against the bias of the springs, holds the frusto-conical portion in the selected frusto-conical receptacle.

Abstract: A hose end coupling unit which has an expandable interlocking snap ring interconnecting a plug member inside a socket member. The interlocking snap ring has a countersunk or funnel-shaped mounting hole, which fits over a frusto-conical cam surface on the plug member and is expanded thereby, as the plug member is inserted into the socket member, into an internal groove within the socket, and is held in an expanded state confined in the groove, after passing over the cam surface, on a cylindrical shoulder portion on the plug member. A spacer snap ring nested in an external groove in the plug member, outside the socket member, prevents the plug member from being inserted deeper into the socket member once the interlocking snap ring is seated on the shoulder portion. An O-ring seal at the entrance of the socket member seals the interconnected plug and socket members.

Abstract: A break-away gear shifting mechanism, for use in a motor truck having a tilt cab, wherein a gear shift lever mounted inside the cab uncouples from a gear shift control shaft and the control shaft uncouples from a support bearing on the underside of the cab upon the tilting of the cab about a forward pivot axis; and reengage upon the pivoting of the cab back to an upright operating position.

Abstract: There is provided a resilient connection between an engine and a transmission housing, of a vehicle of the open frame type, for dampening engine generated noise which is transmitted to the frame via the transmission housing. The resilient connection comprises rubber rings or cups on metallic spacer bushings compressed between the engine and housing. There is also an axially telescopic drive shaft from the engine to the transmission which accepts limited angular movement between the engine and housing in the plane of the resilient connection.

Abstract: A break-away gear shifting mechanism, for use in a motor truck having a tilt cab, wherein a gear shift lever mounted inside the cab uncouples from a telescopic gear shift control shaft, which is supported at one end on the underside of the cab and is supported at the opposite end on the gear shifting mechanism, and telescopes outwardly or expands upon the tilting of the cab about a forward pivot axis; and reengages with the control shaft upon the pivoting of the cab back to an upright operating position simultaneously with the control telescoping inwardly or retracting to its original length.

Abstract: Heat exchange apparatus including a toroidal-type radiator having radially extending cooling air passageways formed through the core thereof, a rotary fan positioned radially inwardly of the radiator core, fan shroud means shaped and positioned with respect to the radiator core and the blades of the fan whereby the air stream induced by the fan during operation has a major component in a radial direction, and air recirculation barrier means for substantially eliminating the recirculation of air at the hub region of the fan.

Abstract: A mounting bracket for securing two parallel spaced-apart cylindrical members to a supporting structure. The bracket comprises an oval shaped clip, of flexible material, which has opposite terminal ends extending towards and overlapping one another along one lateral side of the clip. Each cylindrical member is passed between the overlapping ends and is nested within a respective semi-cylindrical loop that is formed at the opposite longitudinal sides of the clip. The overlapping ends of the clip are then fastened to one another and attached to the supporting structure.

Abstract: Heat exchange apparatus including a toroidal-type radiator having radially extending cooling air passage-ways formed through the core thereof, a rotary fan positioned radially inwardly of the radiator core, fan shroud means shaped and positioned with respect to the radiator core and the blades of the fan whereby the air stream induced by the fan during operation has a major component in a radial direction, and an auxiliary radiator structure axially spaced from the rotary fan.

Abstract: An auxiliary hydraulic fluid circuit for purging air from a hydraulic brake system in either an agricultural or industrial type of tractor vehicle by diverting hydraulic fluid through the auxiliary circuit from the hydraulic power system of the tractor into the hydraulic brake system. The fluid diverted into the brake system is observed flowing, through transparent means in conduits comprising the auxiliary circuit, until the fluid flow is clear, to the reservoir of the hydraulic power system. At which event, the brake system is now purged of air and the hydraulic circuit is disconnected between the tractor hydraulic power and brake systems.

Abstract: A heat exchanger apparatus for a liquid-cooled internal combustion engine including a radiator axially spaced from the engine, an engine-driven, suction-type fan axially spaced intermediate the engine and the radiator for drawing cooling air axially through the radiator, fan shroud means shaped and positioned with respect to the radiator and blades of the fan whereby the air stream discharged by the fan is in a radial outward direction, and an air baffle positioned intermediate the fan and engine for mitigating air recirculation in the fan hub region; the fan shroud structure is formed to provide a generally cylindrical exit throat section (CF), a radial flat discharge section (RF), and a radial expander or diverging section (R), serving as a transition between the throat section and the discharge section, and wherein the impeller blades of the fan have a projected or effective axial width (AW); the various shroud structure sections are dimensioned with respect to such projected or effective axial width (AW)

Abstract: A two and four wheel drive indicator is provided in a push-pull handle that is used for conditioning a vehicle for either two or four wheel drive operation. The indicator is actuated by a slidable rod within the handle which comes into contact with a base or supporting surface for the handle as the handle is pushed toward the base or supporting surface. A symbol, representing the four wheel drive condition, appears on a cover plate on the handle whenever the handle is actuated to condition the vehicle for a four wheel drive operation.