Showing papers on "Paddle published in 1970"
Patent•
19 Jan 1970
TL;DR: In this article, the effect of a wood or similar fire in a fireplace is simulated by the combination of an incandescent light bulb situated to illuminate discrete and separate areas of a rotatable blade or paddle assembly.
Abstract: The effect of a wood or similar fire in a fireplace is simulated by the combination of an incandescent light bulb situated to illuminate discrete and separate areas of a rotatable blade or paddle assembly. The blade or paddle assembly is rotated and located behind the incandescent light source and both are enclosed within a shell having the shape, configuration and appearance of a bed of coals, a log fire or the like. The incandescent source or sources are mounted behind opaque portions of the shell and the blade or paddle assembly is rotated and is so constructed as to effect reflection of the incandescent source in such fashion that the reflected light on the interior of the shell moves upwardly and gives the appearance of flickering, thereby to simulate flames.
29 citations
Patent•
04 Nov 1970
TL;DR: In this paper, a power generator, utilizing ocean waves as a motivating force, had at least one undershot paddle wheel above a upward sloping gathering platform and at least two paddle wheels arranged below the platform at one end.
Abstract: A power generator, utilizing ocean waves as a motivating force, having at least one undershot paddle wheel above a upward sloping gathering platform and at least one paddle wheel arranged below the platform at one end. The upper paddle wheels, arranged to deliver power from incoming waves, and, outgoing waves are arranged to rotate a propeller shaft. The gathering platform guides incoming waves in an undershot action on the wheels and discharges some of the water over the end of the platform in an overshot action on the paddle wheel below the platform.
26 citations
Patent•
07 Aug 1970
TL;DR: A water float with a buoyant body portion and two rear paddle portions hinged to the body portion is described in this article, where the rear paddle portion is connected to body portion by hinge means and foot straps secured thereto.
Abstract: A water float having a buoyant body portion and buoyant rear paddle portions hinged to the body portion. The two rear paddle portions are connected to the body portion by hinge means and have foot straps secured thereto. Upon lying on the float with the feet connected under the foot straps, a person can produce an up and down motion of the paddle portions to propel the float through the water. The paddle portions may be formed integrally with the body portion or may be detachable therefrom. Fins and flanges may be added to the paddles to increase the propelling efficiency thereof.
10 citations
Patent•
05 Mar 1970
TL;DR: A paddle for striking a ball having two striking members connected to opposite ends of a handle is described in this paper, where each striking member extends outwardly from the handle with a striking surface of each striking members being angularly disposed with respect to the longitudinal axis of the handle, so that each striking surface faces inwardly.
Abstract: A paddle for striking a ball having two striking members connected to opposite ends of a handle. Each striking member extends outwardly from the handle with a striking surface of each striking member being angularly disposed with respect to the longitudinal axis of the handle, so that each striking surface faces inwardly. The handle has a rectangular cross-section to indicate the orientation of the striking surfaces to the user of the paddle.
6 citations
Patent•
13 Apr 1970
TL;DR: A concrete roadway paving machine is provided with several transversely arranged freely rotatable paddle wheels which oscillate vertically and ride over the mesh or rod reinforcing to depress the same into the plastic concrete to the desired depth.
Abstract: A concrete roadway paving machine is provided with several transversely arranged freely rotatable paddle wheels which oscillate vertically and ride over the mesh or rod reinforcing to depress the same into the plastic concrete to the desired depth. Where lateral positioning of longitudinal rods is required, the paddles or blades are provided with notches or teeth having related angular edges whereby the oscillation progressively shifts the rods to their correct positions.
5 citations
Patent•
26 Aug 1970
TL;DR: A paddle toy for coordination, skill and amusement employing a paddle and a ball connected by a coil spring having a substantially rectangular cross section is described in this paper, where the ball can be bounced with a sound effect against the paddle requiring the development of skill for amusement.
Abstract: A paddle toy for coordination, skill and amusement employing a paddle and a ball connected by a coil spring having a substantially rectangular cross section. Through the use of the special coil spring which permits stacking of the coils, the ball can be bounced with an intriguing sound effect against the paddle requiring the development of skill for amusement. In modifications, the ball may be substituted by a figurine and the ball or figurine and the paddle can be coated with a luminescent paint for nighttime illumination.
3 citations
01 Jun 1970
TL;DR: In this article, the authors investigated the hydrodynamic characteristics of a series of scale models of paddle wheels with fixed radial blades, designed for speeds in excess of 20 knots, and found that a six-bladed wheel has higher propulsive efficiency and thrust than a twelve-blading wheel.
Abstract: The report covers an investigation of the hydrodynamic characteristics of a series of scale models of paddle wheels with fixed radial blades, designed for speeds in excess of 20 knots. The results indicate that a six-bladed wheel has higher propulsive efficiency and thrust than a twelve- bladed wheel. Peak efficiency is in the neighborhood of 41 percent and occurs at slip values of 30 to 40 percent. Thrust increases with immersion depth, within the range tested ( 16 percent of the wheel diameter immersed ). There is a slight break in the thrust curve over a span of 10- percent slip, after which the thrust again increases with increasing slip. There is evidence of scale distortion, and it is felt that the present model, with a scale factor of 8.5 to 1, may have been too small. ( Author )
2 citations
Patent•
11 Nov 1970
TL;DR: Peddrick as discussed by the authors described a ship driven solely by natural winds with a rotatable wind-driven member (as shown a Pelton wheel type device) which is connected by a mechanical linkage to a water impeller (e.g. water-screw or paddle wheels): and also by an electrical linkage to the same or a further water impeachmentller, the electrical linkage comprising an electrical generator driven by the winddriven member, a storage battery charged by the generator and an electric motor supplied by the battery and driving the water screw or paddle wheel.
Abstract: 1,211,937. Wind motor propulsion. A. P. PEDRICK. 15 Jan., 1970, No. 11808/68. Heading B7V. A ship driven solely by natural winds is provided with a rotatable wind-driven member (as shown a Pelton wheel type device) which is connected by a mechanical linkage to a water impeller (e.g. water-screw or paddle wheels): and also by an electrical linkage to the same or a further water impeller, the electrical linkage comprising an electrical generator driven by the wind-driven member, a storage battery charged by the generator and an electric motor supplied by the battery and driving the water screw or paddle wheels. As shown water screw 27 is driven from motor 20 by the mechanical linkage comprising rod 25 transmission box 26 and the spindle of an electric motor 28, The alternative electrical drive is obtained from the box 28 driving a. generator 29 to charges a battery 30 which supplies the motor. A number of embodiments are described which disclose inter alia (a) vertical and horizontal Pelton wheel arrangements, rotatable about a vertical axis, (b) air screw arrangements (c) paddle wheels or water screw drive, (d) trimaran hull structure, (e) auxiliary sails.
2 citations
Patent•
26 Feb 1970
TL;DR: In this paper, a rotatable and height-adjustable closure disc for the aperture is provided with paddle blades above the uptake pipe or opening, and a paddle wheel is arranged on the disc shaft in or below the vapour inlet opening of the plate.
Abstract: The device is fitted in a vapour uptake pipe or opening of a plate of a distillation column in such a way that it forms a rotatable and height-adjustable closure disc for the aperture, and is provided with paddle blades above the uptake pipe or opening. A paddle wheel is arranged on the disc shaft in or below the vapour inlet opening of the plate. The device gives good liquid-vapour contact with low pressure losses.
1 citations
Patent•
06 Aug 1970
TL;DR: In this article, a fast self-hardening binder is used for the preparation of foundry sands incorporating a rapid, selfhardening agent, in which the various constituents are automatically dispensed separately into a mixer from where, after mixing, the resultant material is transported immediately to the relevant molding machine.
Abstract: Method for the preparation of foundry sands incorporating a rapid, self-hardening binder, in which the various constituents are automatically dispensed separately into a mixer from where, after mixing, the resultant material is transported immediately to the relevant moulding machine. Speed of operation. The materials are fed into a paddle mixer having a funnel shaped mixing basin, from the two gravity-operated bins and an Archimedes screw feed from one side, the non-active constituents being pre-mixed prior to the addition of the hardening agent. The whole paddle can be lifted out of the mixing bowl, and moved sideways for easier, and quick emptying, and cleaning of bowl, and paddle.
Patent•
[...]
TL;DR: A floating water-walking device has a horizontal cylindrical tread portion joined at its opposite ends to a pair of paddle wheels coaxial with it as discussed by the authors, each of the wheels has circumferentially spaced radial vanes and is at least as great in diameter as the tread portion.
Abstract: A floating water-walking device has a horizontal cylindrical tread portion joined at its opposite ends to a pair of paddle wheels coaxial with it. Each of the wheels have circumferentially spaced radial vanes and is at least as great in diameter as the tread portion. The latter is large enough to stand on so that if the floating device is rotated by the feet of a person standing on it the paddle wheels will cause it to travel across the water.
Patent•
01 May 1970
TL;DR: In this article, a wheel and a paddle are used as a toy to roll a wheel over any suitable surface, with the paddle being locked in its recess against withdrawal when the wheel is in the recess.
Abstract: A stool having in its top at the rear thereof a transverse wheel recess for receiving therein a lower portion of a wheel in an upright position with the major portion of the wheel projecting above the top of the stool to provide a backrest. The stool also has in the top thereof rearwardly of the wheel recess a paddle recess for receiving a paddle therein in an upright position and with a handle portion of the paddle projecting above the top of the stool behind the wheel, the paddle being locked in its recess against withdrawal when the wheel is in its recess. Upon removal of the wheel and then the paddle from their respective recesses, the wheel and paddle may be used as a toy by employing the paddle to roll the wheel over any suitable surface.