Showing papers on "Paddle published in 1976"

Independent compression and positioning device for use in mammography

Abstract: A mammographic compression and positioning device which is independent of the x-ray system utilized to produce images of an object being examined. A slide assembly is movable along a vertical post member which is adjustably secured to a base member. A compression paddle is coupled to the slide assembly and has a curved lower surface which, upon contacting the object, exerts a variable compressive force thereon. The position of the compression paddle is adjustable in a plurality of directions, allowing the paddle to be exactly positioned whereby an image of a selected object view may be obtained. The compression paddle is transparent enabling the user of the device to visualize the object being compressed and to take the steps necessary to provide initial image results which are satisfactory thereby reducing the number of reimages which normally would be required.

Motor powered by wave action

Abstract: A motor, preferably in the form of a pump, is primarily designed to be activated by the oscillating motion of waves and has a paddle disposed to oscillate about a stationary horizontal axis located in the plane of the paddle. The paddle is placed in the surf and so positioned where the wave action is greatest so that the force of the waves can act on the paddle to cause the paddle to oscillate back and forth, one cycle with each wave. Preferably, the paddle is disposed to depend from the stationary axis. This oscillating motion of the paddle is coupled to a suitable pump which pumps sea water. Preferably, the pump has a cylindrical housing concentric with the stationary axis. A radial vane is fixed to a shaft within the housing while the paddle is fixed to the shaft and disposed outside the housing. Suitable valves are provided in the housing to allow sea water to enter and exit under action of the oscillating vane.

Solid molded paddle construction

Abstract: A solid molded paddle construction for striking a ball during play in a ball game comprising a face portion having a unitary face member and a peripheral edge portion. A handle extension is integral with the face portion and provides a grip for the user. The face portion is provided with a plurality of openings, the spacing of which is smaller than the diameter of the ball. Accordingly, when the ball is struck, it deforms and the openings bite into the ball to permit the player to develop spin on the ball. Preferably, the paddle is molded by an aluminum die-casting process.

Float apparatus for bicycle

Abstract: A float apparatus for attachment to a conventional bicycle comprising a pair of frame members, each having an elongated pontoon extending from the front of the bicycle to the rear of the bicycle mounted thereon. Each frame member has a support rod extending from the frame to the rear wheel axle, a pivotal support rod extending from the frame to the front wheel axle and an upper elongated horizontal bar. The frame members are attached to opposite sides of the bicycle and are coupled to each other by fastening means coupled to the horizontal bars of the frame. The front wheel of the bicycle is provided with a rudder coupled thereto and the pedals are provided with paddle means coupled thereto.

Parallel action jogger

Abstract: A paper jogging device is disclosed for stacking sheets of paper or the like into precise alignment directly onto a shipping skid. The device employs a jogger paddle that is flexibly attached to a rigid supporting means, and that is driven so as to be vibrated back and forth over its entire surface. The drive means comprises a plurality of thrust members which are actuated by a pair of synchronized rotating eccentrics employing a novel modified "scotch-yoke" coupling mechanism. The novel features of the jogging device are, (1) the entire surface of the paddle moves back and forth simultaneously, (2) the forward motion terminates at a predetermined fixed position with reference to the supporting means, (3) the acceleration and deceleration of the paddle is a simple harmonic motion requiring minimum driving power, and (4) the entire operation is very quiet.

Apparatus for mechanically sorting fruit

Abstract: A paddle mounted on a fruit sorter at the end of a fruit conveyor is connected to the plunger of a solenoid which normally is actuated to bias the paddle into the path of fruit being discharged from the conveyor toward a good-fruit discharge conveyor. A color sorter is positioned to scan the fruit leaving the conveyor, and means are provided to de-energize the solenoid upon the detection of a good fruit to allow the paddle to be moved from the path of the fruit so that the fruit will fall onto the discharge conveyor. Power to operate the solenoid is provided by a circuit which develops a relatively large value of current upon initial energization of the solenoid. This large current acts to quickly move the paddle into the path of any cull fruit or non-fruit leaving the conveyor to deflect such items from the discharge conveyor. The sorter circuitry provides a much smaller amount of current after the initial surge to retain the paddle in its deflecting mode until a good fruit is again scanned. When the solenoid is de-energized its travel is limited by a soft spring so that its return to the deflecting position will be rapid, said spring being readily yieldable if the paddle is hit by a good fruit moving toward the discharge conveyor.

Fan for forage harvesting system

Abstract: A fan for a forage harvesting system. The fan has paddles each having a propelling surface enlarged radially and in a front-to-rear direction for propelling air and forage. Spaced triangular shredder blades are mounted not only across the outer end of each paddle, but also aligned along the leading edge of each paddle. The leading edge shredder blades all slant towards the rear of their paddle and radially outwardly along their paddle and assist in chopping forage to varied lengths as forage passes over them.

Engaging and distributing paddle for a manure spreader

Abstract: An improved paddle design for use on the beater mechanism of a manure spreader enables the spreader to satisfactoriloy handle a broader range of manure consistencies and to distribute the same over a more uniform and wide spread pattern. The paddle has a dished or cupped shape, is substantially symmetrical about its centerline, and includes a curved main body portion and integrally formed upper engaging and lower mounting portions. The upper portion has a curved shape similar to the main body portion and is inclined inwardly toward the axis of curvature of the main body portion, thus providing a concave working surface. The lower portion presents a planar surface for mounting the paddle on a beater shaft. The paddle, being symmetrical, can be used on either the left or right sides of a spreader.

Paddle for use in a rotating-paddle bin level indicator

Abstract: Apparatus for indicating the level of flowable material in a storage bin comprising a motor rotatably suspended within a protective enclosure and having a driveshaft directly coupled to a paddle disposed within the bin to engage material therein. A nipple extending from the enclosure is threadably received within a gland carried by a bin wall with the paddle extending into the bin space. The paddle comprises a hollow tube curved at a fixed radius over an arc of substantially ninety degees, and then flattened or pinched at one end thereof over an arc of about fifty degrees to form a closed bill which may be inserted through the mounting gland.

Racing paddle and method of making the same

Abstract: An extremely light-weight racing paddle is disclosed which is formed of a very light-weight core of low structural strength surrounded by a shell formed of an extremely strong, light-weight fibrous material which supplies structural strength to the core material. The thickness of the fibrous material is varied along the shaft of the paddle so as to be thickest in the regions of highest stress. The blade of the paddle is reinforced by a selected pattern of fiber strips. Various embodiments of the basic paddle structure are disclosed, as is the method of making the paddle.

Vertical axle paddle motor

Abstract: A vertical axle paddle motor including a support structure with a rotor mounted on the vertical axle, the rotor having a plurality of arms with paddle members pivotally attached to the end of the same. Each of the paddle members include a plurality of adjustable vanes which move from an open to a closed position within the paddle. Vane position in the paddles is controlled by a wind velocity and wind direction control, operating a pair of cams forming a composite cam surface which is engaged by cam followers on each of the rotor arms associated separately with motors on the paddle, to adjust the position of the vanes within the paddles for maximum efficiency in rotation. The wind velocity cam may be adjusted relative to the wind direction cam to increase the amount of time the vanes of the paddles are held in an open position to reduce and stabilize rotation of the rotor. The wind velocity cam may also be adjusted by a separate motor means to prevent any of the vanes from moving to a closed position causing cessation of rotor rotation.

Paddle ball game

Abstract: A game having two playing surfaces one suspended above the other. A ball or other missile is bounced off one surface so that it hits the second surface. One or both surfaces may be irregular to impart random bounces to the ball or missile.

Canoe training appts. framework - has fixed seat for occupant and paddle fitted with force resisting pull elements

Abstract: Training apparatus for canoeing consisting of a training frame (1, 2) having a space for the canoeist rigid in a longitudinal direction and with a freely movable paddle (8) fitted with pull elements (9, 10) attached to the ends carrying the paddle blades and connected to a rope (13). The rope is led over a reversing roller (15) and both ends of the rope are also attached to rope pulleys (12, 14) rotating in opposite directions each of which has to overcome a resistance (13) when the rope unwinds. In the case of Canadian canoe training the paddle stock is divided along its centre.

Pump for liquids has housing and flat paddle - driven to oscillate and swivel inside housing

Abstract: The paddle may be driven by a crank mechanism (5). It may be rigidly secured to the free end of the crank connection rod. The housing may be provided with a non-return valve (10). The pump is mainly used for corrosive or radio active fluids. An electro-motor or I.C. engine may drive the crank. Alternatively a hand driven arrangement or an hydraulic or pneumatic piston cylinder unit may be used.

Beet harvester with spring system for protecting its lifter wheels and paddle shaft

Abstract: A preferred number of lifter wheel assemblies each have a pair of lifter wheels rotatably carried at one end of a strut which is pivotally mounted at its other end to a clamp unit having a horizontal flange which projects forwardly past the front transverse beam of the main frame of the sugar beet harvester. An elongated rigid member is welded to the underside of each strut and has a flange at its forward end which projects beneath the clamp unit flange. Heavy-duty coil springs normally maintain the flanges together to cause the lifter wheels to be biased into the ground. Each spring individually yields or compresses when the lifter wheels associated therewith ride upwardly over a submerged rock, thereby preventing breakage of any of the components constituting the lifter wheel assembly. Sufficient upward movement of the lifter wheels in any given instance would cause the lifter wheels to strike the overhanging steel shaft carrying the paddles that knock the sugar beets from the various pairs of lifter wheels. Breakage of the paddle shaft is prevented by journalling the ends of the paddle shaft on arms pivotally mounted to the side portions of the main frame. Additional heavy-duty springs, one for each arm, normally bias the ends of the arms downwardly, these being the ends of the arms near which the paddle shaft is journaled, so that the last-mentioned springs yield or compress to permit upward movement of any one of the struts and its lifter wheels when deflected upwardly by a rock.

Cleaning device for walking beam furnace

Abstract: A heat seal, for a walking beam furnace, comprising a water trough with a pair of parallel skirts having their lower edge portions submerged in the trough. A row of paddles are mounted on each skirt, each paddle being connected pivotably on the skirt for upward and downward movement below the skirt.

Device for production of wood chippings - has paddle feed wheel with same axial intermediate space as ring cutter

Abstract: The device is for production of chippings of material fed into it, partic. from previously comminuted wood. A cutter or knife ring has knife or cutting edges mounted on its inner circumference. A paddle wheel mounted inside the cutter ring is used for distribution and transport of the material to be cut up to the cutter rings. The axial intermediate space of the paddle wheel is the same as the axial intermediate space of the knife or cutter ring. The device is partic. for comminuting wood particles for incorporation into composite boards or for filling materials.

Circulating pump for thick liquids, pulpy matls - e.g. pig food, sewage, and liq. manure

Abstract: A circulating device for viscous, pasty, or pulp like materials, in which the free, open end of an overhead driven eccentric screw pump dips into the material and the pump is driven in the direction of the screw A stirring paddle is attached to the lower(free) end of the eccentric screw The blades of the paddle extend radially outwards past the pump housing

Viscosity change determn. eg. in polystyrene polymn. - by strain gauges on stationary paddle in reactor with stirring arms

Abstract: The sudden change in the viscosity of a mass in motion, i.e. of the phase reversal during the manufacture of polymers (polystyrene) is determined by dipping a stationary paddle into the vessel in which the mass is agitated by a stirring arm. Strain gauges are attached to a metal rod on which the stationary paddle is fixed and the bending stress indicated by them indicates sudden viscosity changes. This is a simple method which can be readily applied to large-scale process engineering. It requires no calibration whatsoever and is based solely on the changing amplitude of the strain and not on its absolute value.

Compact small boat propulsion - with oscillating flat paddle in duct under stern driven by crank assembly

Abstract: A large flat, double ended paddle (5) is fitted to the bottom end of a vertical shaft (6) whose upper end is fitted to a rotating drive wheel (8). A sliding, pivotted bearing (9) secures the middle of the shaft. The paddle is agitated while positioned in a rectangular duct under the boat and forces the water out of the back of the duct. It is simple to instal and operate and by not moving the water too fast, does not suffer from turbulence. It can be operated by hand or by a small motor. A vertically hinged rudder is provided behind the paddle.

Uncoupling device for rotary dump cars

Abstract: An uncoupling device for rotary dump cars in which the car couplers are of the bottom operating type, wherein at each end of the car the uncoupling mechanism is made of the same type, and comprising both the rotary and non-rotary couplers of the car being equipped with paddle type lock lifters having a pivotal operating stroke that unlocks and opens the coupler knuckle, and a bail type actuator therefor, wherein the actuator comprises a bail member mounted on the end of the car to receive the car center sill and swing about a horizontal axis extending crosswise of the car and located at approximately the level of the top of the car center sill and inwardly of its striker. The bail member has a striker section that underlies the center sill and is equipped with a paddle striker that is arced to accommodate coupler side swing. The uncoupling device includes a handle structure journaled on the end of the car coaxially of the swing axis of the bail member and connected to the bail member to swing same to bring the bail member striker into striking engagement with the paddle, to thereby move the paddle through its full operating stroke to unlock and open the coupler knuckle. The bail member is spring-biased to a retracted position spaced from the paddle and disposed under the center sill striker.

Mixer for powdered and granular materials - utilising combined fluidisation and mechanical stirring

Abstract: In a mixer for powdered and granular materials and for the treatment of this with a compressed gas and a mechanically driven mixing device, comprising a vertical mixing vessel with inlet and outlet for the raw material and mixed prod. respectively, and a flat bottom, (i) at least one approx. triangular, hollow mixing paddle is fixed to a rotating hub installed directly above the flat bottom in such a way that the latter covers a cavity extending between the walls of the paddle from the hub to the cylindrical outer wall of the mixing vessel and (ii) feed channels are provided for the introduction of compressed gas into the cavity through the hub, a gap being provided between the hub and the wall part of the mixing paddle and the adjacent walls of the mixing vessel to facilitate the escape of compressed gas into the vessel along the whole of the paddle from the hub to the cylindrical wall of the vessel. Provides a mixer for powder and granules, which may be of different particle size and/or different materials, working by combined fluidising and mechanical stirring, with min. power requirements and maintenance and improved mixing efficiency.