Showing papers on "Paddle published in 1973"

Material level indicator sensor

Abstract: A level sensing apparatus of the kind comprising a sensing switch actuated by a rotating paddle, with a cam drive connection between the drive motor and the sensing paddle which protects the drive motor from stalling or jamming in either normal or abnormal operation of the level sensing apparatus; the cam drive connection allows continuing unobstructed rotation of the drive motor shaft, when the sensing paddle is blocked, in the event of a failure of the sensing switch.

Superconducting paddle wheels, screws, and other propulsion units for high‐speed ground transportation

Abstract: High‐speed ground vehicles magnetically suspended above a continuous aluminum guideway by superconducting coils can have a clearance of 0.1–0.3 m. To take full advantage of the large clearance, a propulsion system with a comparable clearance is needed. Two such systems based upon physically moving static magnetic fields produced by superconducting coils are proposed. With the use of a prime mover such as a gas turbine or a diesel engine, these systems avoid power collection problems and should result in a lower‐weight propulsion unit. A numerical analysis of each has been made to determine the thrust, the lift force, and the efficiency as a function of various parameters. The mechanical efficiency of the paddle wheel appears to have a maximum of ∼60% at 483 km/h (300 mph), while that of the superconducting screw is (1‐slip) for an infinitely long machine. End effects will degrade the efficiency somewhat for a screw of finite length.

Conveyor means for crop gathering equipment

Abstract: A conveyor means for crop gathering equipment is disclosed herein and generally comprises a combine header including an elongated platform having an elevated conveyor means extending upwardly and rearwardly therefrom. A first crop gathering mechanism is movably mounted on the platform between the elevating conveyor means and one of the ends of the platform means. A second crop gathering mechanism is also movably mounted on the platform between the elevating conveyor and the other end of the platform. Each of the crop gathering mechanisms comprise first and second spaced apart sprocket wheels having a chain means extending therearound and therebetween. A plurality of elongated paddle arms are secured at one end thereof to the chain in a spaced apart relationship so that the paddle arms will move along the bottom wall of the platform towards the elevating conveyor means as the chain is driven by its suitable power means. A cam guide means is provided between the elevating conveyor means and the crop gathering mechanism to guide the paddle arms as they move from their conveying position to their return position so that the crop material will be pitched towards the elevating conveyor means. The crop material is pitched tangentially with less altitude than the paddle arms as they rise out of crop material to their return position. Proper chain velocity powering the paddle arms and proper paddle arm construction are provided to change crop material linear direction to round a curve rearwardly for discharge.

Competitive projectile game

Abstract: A table top type competitive action game apparatus of the type wherein a reboundable ball is launched toward and away from a backstop or barrier, and returned by opposing participants with the aid of a block-like, paddle instrument somewhat similar to a handball-type game. The game includes a flexible barrier at the rebound end of the playing surface which the ball must strike in its path to rebound towards an opposing player.

Hydraulically operated diverter

Abstract: A hydraulically operated diverter for use subsea in directing ''''pumpdown'''' or through-flow-line (TFL) tools through wyebranched flow passageways formed in a diverter body member located on submerged wellheads. In the diverter body member a paddle is hinged to a shaft at the junction of the wye-branched flow passageways for alternately diverting tools through one and the other of such passageways. A removable and replaceable paddle operator assembly, which when in operating position sealingly engages the diverter body member, contains a hydraulic piston assembly which causes a shaft, nonrotatably connected to the paddle, to rotate the paddle against the bias of a spring from one of its diverting positions in which it is normally maintained by the spring to the other of its diverting positions. The operator assembly is removable and replaceable by means of a subsea manipulator. Means are provided for testing the seals used in sealing the operator assembly to the diverter body member. The diverter shaft is configured so as to ensure its proper connection to an operator assembly shaft with which it engages. The piston assembly is designed to prevent overstressing of the diverter shaft and paddle and to limit the side load on the operator shaft bearing.

Mail tray unloading

Abstract: A mail tray turnover box includes a load end, an unload end, and a bottom panel on which stacks of edge supported mail pieces are deposited from mail trays with the bottom panel having laterally spaced longitudinal slots extending through the unload end and a paddle movable through the box when each stack is placed on the bottom panel to move the stack in the direction of the unload end. The paddle has vertical slots open at the bottom paddle edge and aligned with the longitudinal slots in the bottom panel. A rank of upstanding aligned fingers mounted to follow a closed course having an upper traverse arranged so that the tip of the fingers pass upward through the longitudinal slots and through the vertical slots during movement through the unload end of the turnover box to push each stack from the paddle and out of the box.

Four wheeled foot propelled childs toy vehicle steered by balance of rider

Abstract: A vehicle has a circular ring shaped platform frame supported by three swivelled castors. A paddle wheel-seat assembly is spring mounted on the platform in a position for the paddle wheel to engage the floor surface in the center of the ring shaped platform. The mounting for the paddle wheel assembly restricts movement laterally but permits vertical movement so the wheel under weight of a rider overcomes the spring bias to engage the floor surface. A rider propels the vehicle by paddling the wheel, and steers it by balancing or leaning to one side.

Agitator shaft seal - with expeller to prevent liquid reaching shaft bearing

Abstract: An agitator has a long thin shaft with the paddle fixed at its free end; the shaft is mounted in a non-rotating support tube extending virtually its whole length and having an end seal for the shaft adjacent to the paddle Between this end seal and the adjacent shaft support bearing, the protective tube is fitted with a one-way valve discharging outwards only, and either a pump, driven by the shaft itself or with a pressurised gas supply, to ensure that the liquid being agitated does not reach the bearing

Apparatus for mixing clay

Abstract: A clay mixing apparatus wherein a mixing chamber receives a charge of clay and water. Rotating paddles within this chamber blend the clay and water to a desirable plastic mix. An inclined, rotating paddle pushes the clay about the wall of the chamber and past a normally closed gate connecting with a bagging chute. When clay is to be discharged, the gate moves into the chamber and into the path of the inclined paddle which pushes the gate to a closed position each time the paddle moves past it. Whenever the gate resists this pushing movement, the clay upon the paddle is forced past the gate and into the chute, and such action effectively pumps the plastic clay through the chute to permit a bag fitted over this chute to be filled with the clay ejected therefrom.

Vibrating paddle assembly for a slip former

Abstract: A concrete slip former having a hopper mounted on ground-supporting wheel assemblies with a front steerable wheel and a pair of tandem individually mounted rear wheel assemblies connected to the hopper through vertical jack adjusting means to control the height and level. The hopper has an open bottom from which an open bottom mold extends rearwardly to shape the concrete mixture as the machine moves forwardly. A paddle assembly is mounted in the hopper for rotation about an axis transverse to the direction of travel of the machine. The paddle assembly is vibrated by mechanical, pneumatic and/or electrical means during rotation of the paddle assembly.

Steering drive mechanisms

Abstract: This invention is a drive mechanism for a vehicle which can be steered by left and right tracks or paddle wheels, there is an individual belt-and-pulley drive to each track or wheel, and a simple control enables the drive ratios to be changed in different senses for steering the vehicle.

Continuous tunnel sterlizer ststerilizer - with rotary paddle wheel inlet/outlet locks

Abstract: Three horizontal conveyor belts in line are used for inlet, travel through the tunnel and outlet and are driven together with the drive shafts for the paddle wheels in the airlocks by a common motor through belts etc. at esp. 200 m/min. Each airlock has an inlet and outlet window and the angle between the nearest edges of the windows is larger than that between the blades of paddle wheel as measured at the centre of the cylindrical casing and shaft. Valves for injection and drainage of hot water at over 100 degrees C and over 2 atmos. and for air venting are fitted in the cylindrical casings and operated by solenoids switched by the rotary paddle wheels.

Document stacker system

Abstract: The specification discloses a document stacker system which may accommodate various sizes of documents which flow at a variable frequency. The stacker system includes a rest station which includes a set of fingers upstanding in the path of travel of incoming documents in order to arrest the movement of the documents. Springs urge the documents downward to engage the fingers. Cans are disposed between the fingers to periodically raise the end of the document arrested by the fingers above the fingers. A pair of resilient rollers are synchronized with the cams to contact the top and bottom surfaces of the document raised by the cams. A transport then receives the document from the pair of rollers for delivery to various stacker receptacles. Each stacker receptacle includes a paddle which is movable vertically within the receptacle for supporting a document stack. A motor is operable to drive the paddle to a desired level within a receptacle in accordance with the sensed height of the document stack within the receptacle. A one-way clutch prevents downward movement of the paddle unless positive drive is provided from the motor, such that the operation of the paddle is substantially independent of the weight of the documents thereupon.

Article transferring apparatus

Abstract: An article transferring apparatus for transferring articles such as packages and the like including a table for supporting the articles, a paddle for moving the articles in a lengthwise direction and another paddle movably mounted to the first paddle for moving the articles across the width of the table. The table has a track which extends diagonally across its width and a cam follower is attached to the second paddle and movably engages the track to cause the second paddle to move across the width of the table as the first paddle sweeps the table in a lengthwise direction. Movement of the paddles results from the movement of a pair of motor driven chains which are connected to the paddle which sweeps the length of the table. A conveyor is provided for supplying articles to the table and the conveyor has sensing devices for detecting the presence of articles. Magnetic detectors and a control circuit are also provided to control the operation of the conveyor.