Showing papers on "Vertical plane published in 1969"
01 Sep 1969
TL;DR: In this paper, the authors used a method due to Williams to discuss the scattering of surface waves of small amplitude on water of infinite depth by a fixed vertical plane barrier extending indefinitely downwards from a finite depth.
Abstract: In this paper we use a method due to Williams(1) to discuss the scattering of surface waves of small amplitude on water of infinite depth by a fixed vertical plane barrier extending indefinitely downwards from a finite depth.
53 citations
Patent•
21 Jan 1969
TL;DR: In this paper, the authors propose a means and a method for establishing a reference line for construction purposes in the form of a energy beam or signal, such as a visible light beam, and preferably, a laser beam.
Abstract: The invention comprises means and a method for establishing a reference line for construction purposes in the form of a energy beam or signal, such as a visible light beam, and preferably, a laser beam. The apparatus includes an energy beam source, adjustably mounted within a housing, pendulously suspended for movement within a vertical plane. The energy beam source and housing are stabilized with respect to a suspension point, so that the energy beam source and housing assume a stable, horizontal position. The apparatus further includes tridimensional adjustment mechanisms for the energy beam source and a stable support for the suspension point. The method of the invention includes the steps of establishing a line offset 90* to the reference line, placing the energy beam source approximately coincident to the reference line, adjusting the energy beam source vertically to coincide with the depth of the reference line, adjusting the energy beam source internally of its housing to desired grade, adjusting the energy beam source to coincide with the reference line in a horizontal plane, and interrupting the projection of the energy beam source to check true vertical plane alignment.
24 citations
Patent•
04 Dec 1969
TL;DR: A divisible transport package comprising at least two containers supported by and retaining side-by-side on opposite sides of a vertical partition plane upon a tray having a bottom portion, suitably supported by feet and having a slot in the plane, and upwardly projecting rims around the periphery of the bottom portion is adapted to be divided, for instance by cutting, into two parts along the lines of intersection between the tray and the vertical plane as mentioned in this paper.
Abstract: A divisible transport package comprising at least two containers supported by and retaining side-by-side on opposite sides of a vertical partition plane upon a tray having a bottom portion, suitably supported by feet and having a slot in the plane, and upwardly projecting rims around the periphery of the bottom portion, which tray is adapted to be divided, for instance by cutting, into two parts along the lines of intersection between the tray and the vertical plane.
23 citations
TL;DR: The results support the claims that relatively accurate sound localization can take place when only monaural cues are available, and significant contribution of binaural cues is clearly evident if the angle between sound sources is made small.
Abstract: The cues for locating sound in the vertical plane are predominantly monaural; binaural cues are available for horizontal plane localization. Ss, required to locate repetitive noise bursts originating in the vertical plane, performed significantly above chance level (p<.005). Performance in locating sound sources in the horizontal was significantly superior to that recorded for the vertical plane (p <.005). These results support the claims that relatively accurate sound localization can take place when only monaural cues are available. But the significant contribution of binaural cues is clearly evident if the angle between sound sources is made small.
21 citations
Patent•
15 Jul 1969
TL;DR: In this paper, the authors describe a system in which seeds are delivered through tubes to slits cut in the ground by a plurality of discs and at least one roller is adapted to compact the ground and close the slits after seeds have been implanted in the slit.
Abstract: In agricultural sowing of seeds, seeds are delivered through tubes to slits cut in the ground by a plurality of discs. At least one roller is adapted to compact the ground and close the slits after seeds have been implanted in the slits. The discs and the rollers are carried by arm assemblies mounted on a frame connected to a drawbar and a resilient connection is adjustable to effect relative movement between the frame and the drawbar in a vertical plane to vary the loading applied to the discs.
18 citations
Patent•
18 Nov 1969
TL;DR: In this paper, the sonar is used to estimate the relative phase between the signal outputs of two hydrophones, which are coupled to a signal processor employing a time-varying gain to compensate for beam-spreading losses and separate clipper amplifiers.
Abstract: The sonar functions in a pulsed active-mode utilizing a projector to insonify a fan-shaped region of an ocean floor area in front of the submersible. Backscattered signal returns are received by two hydrophones having acoustic centers located in close proximity (about 0.35 inch) one to the other. Range is determined by elapsed time between transmission and reception. Direction in a vertical plane relative to the axis of the submersible is determined by the relative phase between the signal outputs of the vertically spaced hydrophones. The outputs are coupled to a signal processor employing a time-varying gain to compensate for beam-spreading losses and then to separate clipper amplifiers. The positive transition of one clipper output is used to reset a sawtoothed generator and the negative transition of the other clipper triggers a pulse generator. Combining the outputs of the sawtooth and pulse generators provides phase information proportional to the arrival angle of the return signal. When combined with range, the results can be displayed to provide a vertical and horizontal coordinate display for navigation purposes. An envelope detector is connected to one of the signal processor channels to intensity modulate the display for highlighting stronger returns.
14 citations
Patent•
13 May 1969
TL;DR: In this article, a machine for excavating galleries or levels in mines by means of a cutting head which is arranged in such manner that it cuts out, in the wall to be mined, grooves in which the outlines on a vertical plane are parallel in pairs but always perpendicular to the flat wall and cut this latter along successive flat vertical surfaces.
Abstract: A machine for excavating galleries or levels in mines by means of a cutting head which is arranged in such manner that it cuts out, in the wall to be mined, grooves in which the outlines on a vertical plane are parallel in pairs but always perpendicular to the flat wall and cut this latter along successive flat vertical surfaces. The cutting head is consequently formed by two parallel discs provided with picks driven in rotation by a shaft at right angles to the axis of the gallery and carried by a disc-carrier head which is orientable with respect to a longitudinal axis parallel to the axis of the gallery.
11 citations
Patent•
21 Jan 1969
TL;DR: In this paper, a block of graphite with a saw blade preshaped lengthwise to a curvature of one radius or of different radii was used for making hot pressed ceramic plates of similar configuration.
Abstract: Mold plates of complex shape used for making hot pressed ceramic plates of similar configuration are cut out of a block of graphite with a saw blade preshaped lengthwise to a curvature of one radius or of different radii; oscillated a relatively short distance in a vertical plane and in an arc of fixed radius, about a horizontal axis. The block is supported on a member that can be fed horizontally into and pivoted about a vertical axis relative to the saw blade to produce a plate with straight and curved portions having a surface of substantially the curvature of the blade.
11 citations
Patent•
14 Aug 1969TL;DR: An aircraft instrument for providing a pictorial display of a vertical plane position of an aircraft, helicopter or other space operated vehicle in flight in relation to radio navigation aids or other selected reference points on the ground or in space is described in this article.
Abstract: An aircraft instrument for providing a pictorial display of a vertical plane position of an aircraft, helicopter or other space operated vehicle in flight in relation to radio navigation aids or other selected reference points on the ground or in space. The instrument utilizes a computing device to establish the location of the references with respect to the vehicle in flight and the vertical pictorial display portrays the vehicle as a moving symbol, such as a red dot of light or other indicator means, positioned on a grid in a manner that shows the actual vehicle altitude above or below the reference point, distance of the vehicle from a reference point, and the vertical plane angle which would lead directly to the reference point. The instrument also includes means to provide a display of a selected or computed angular path to the same reference point so that an observer may readily determine whether the vehicle is following a proper flight path or whether it is possible to follow the proper path from the vehicle''s present position in flight. Additional means are also provided in the instrument to display the relative vertical plane position of another reference point, on the ground or in space in relation to the same vertical plane by portraying the second reference point at another symbol, such as a blue dot of light or other suitable indicator means on the same grid. In the aforenoted instrument the relationships between the elements of the display is established so as to correspond to a mental image such as may be usually maintained by the pilot of the vehicle as he operates the vehicle in flight. In such manner the display serves to correlate and update the pilot''s mental image with a minimum of confusion or interruptive mental action as the vehicle may rise or descend using vertical aimpoints or references.
10 citations
Patent•
02 Apr 1969TL;DR: In this article, a series of roller-supported cars are propelled by a conveyor chain along a track that follows horizontal and vertical curves, where each link of the conveyor is joined at one end to an adjacent link for pivotal movement in a vertical plane and joined at the other end to opposite adjacent link to pivotal movements in a horizontal plane.
Abstract: A series of roller-supported cars are propelled by a conveyor chain along a track that follows horizontal and vertical curves. The track includes a pair of vertical support rails and a pair of horizontal guides. Each link of the conveyor chain is joined at one end to an adjacent link for pivotal movement in a vertical plane and joined at the other end to an opposite adjacent link for pivotal movement in a horizontal plane. Each joint that pivots in a horizontal plane is supported by a roller traveling between the pair of horizontal guides, while each joint that pivots in a vertical plane is supported by a pair of rollers traveling on the pair of vertical support rails. A top plate is supported by each two pair of rollers on the vertical support rails forming cars for carrying loads and the manner of support does not impart bending stress to the links of the conveyor chain.
8 citations
Patent•
08 Apr 1969
TL;DR: In this article, a method of and means for the longitudinal trimming or longitudinal dividing of metal plates, particularly of plates more than 20 millimeters thick, by means of pairs of circular blades, wherein the cutting plane is a vertical plane perpendicular to the surface of the plate, and the surfaces that form the cutting edge of at least one of the blades are nowhere either parallel or perpendicular to a cutting plane, but form an angle of preferably between 2* and 20* therewith.
Abstract: A method of and means for the longitudinal trimming or longitudinal dividing of metal plates, particularly of plates more than 20 millimeters thick, by means of pairs of circular blades, wherein the cutting plane is a vertical plane perpendicular to the surface of the plate, and the surfaces that form the cutting edge of at least one of the blades are nowhere either parallel or perpendicular to the cutting plane, but form an angle of preferably between 2* and 20* therewith.
Patent•
12 Nov 1969
TL;DR: In this paper, a column and a horizontal support element, such as an arm cantilevered off the column or a cross bar extending between two vertical columns, are corrected by providing at least one tie-rod disposed in the vertical plane of the support element.
Abstract: Vertical bending stresses in machine tools having a column and a horizontal support element, such as an arm cantilevered off the column or a cross bar extending between two vertical columns, are corrected by providing at least one tie-rod disposed in the vertical plane of the support element, one end of the tie-rod being secured adjacent the lowermost surface of the support element and the other end of the tie-rod being adjacent the uppermost surface of the support element, the tie-rod thus being obliquely disposed to the column.
Patent•
24 Jan 1969
TL;DR: In this paper, a doppler radar vehicle speed measurement template is provided with a representation of the photograph zone intersecting with a horizontal line representing the horizon of the road and a vertical line representing vertical plane of the optical axis of the camera.
Abstract: A doppler radar vehicle speed measurement template is provided with a representation of the photograph zone intersecting with a horizontal line representing the horizon of the road and a vertical line representing the vertical plane of the optical axis of the camera. The template is laid over the photograph with the vertical and horizontal lines aligned with the center of the photograph and with either the vanishing point of the road or a point at the height of the camera to accurately locate the vehicle in the photograph zone.
Patent•
25 Feb 1969
TL;DR: In this paper, an ELONGATED THROUGH is used in a VIBRATORY FINISHING MACHINE, an ELongated THRough is Vibrated SO AS TO IMPART GENERALLY ORBITAL MOVEMENT to the CONTENTS about an AXIS DISPOSED in a HORIZONTAL PLANE and ORIENTED at a PREDETERMINED ANGLE with respect to a VERTICAL PLANE COMPRISING the longitudial AXIS of the rough.
Abstract: IN A VIBRATORY FINISHING MACHINE, AN ELONGATED THROUGH IS VIBRATED SO AS TO IMPART GENERALLY ORBITAL MOVEMENT TO THE CONTENTS ABOUT AN AXIS DISPOSED IN A HORIZONTAL PLANE AND ORIENTED AT A PREDETERMINED ANGLE WITH RESPECT TO A VERTICAL PLANE COMPRISING THE LONGITUDINAL AXIS OF THE TROUGH.
Patent•
11 Aug 1969
TL;DR: In this paper, a TILTING-DEVICE is also provided for SUCH a PAIR of prebent trusses, the lower one having its tension varying in a mass of contours in a VERTICAL PLANE.
Abstract: APPARATUS FOR MANUFACTURING A PAIR OF PREBENT GIRDERS BY PREBENDING SIMULTANEOUSLY THE METAL TRUSSES OF SAID GIRDERS IN A VERTICAL PLANE, MAINTAINING THEM IN THE PREBENT POSITION AND EMBEDDING THE TENSION FLANGE OF THE LOWER TRUSS IN A MASS OF CONCRETE AND, THE CONCRETE HAVING SET, PIVOTING THE PAIR OF TRUSSES AROUND ONE OR SEVERAL AXES, WHICH ARE HORIZONTAL AND PARALLEL TO SAID VERTICAL PLANE, UNTIL THEIR RESPECTIVE POSITIONS ARE REVERSED AND THEN EMBEDDING THE TENSION OF THE OTHER TRUSS. A TILTING-DEVICE IS ALSO PROVIDED FOR SUCH A PAIR OF PREBENT TRUSSES, THE LOWER ONE OF WHICH HAVING ITS TENSION FLANGE EMBEDDED IN A MASS OF CONCRETE. THE DEVICE COMPRISES AT LEAST TWO TILTING-MECHANISMS, CONSTITUTED RESPECTIVELY OF TRUSS-SUPPORTS PIVOTING AROUND ONE OF SEVERAL SUCCESSIVE AXES, WHICH ARE HORIZONTAL AND PARALLEL TO SAID VERTICAL PLANE.
TL;DR: In this article, a hybrid computer simulation method to solve the three-dimensional nonuniform diffusion equation is described, where the partial differential equation is transformed into a set of algebraic equations and the entire process is performed in the hybrid computer system using the digital computer as the control.
Abstract: Evaporation from finite areas with constant sources is determined by simulating the mass transfer equation. The equation of mass transfer in a turbulent atmosphere describes the movement of mass, water vapor, and momentum. The process of transferring water vapor by the evaporation phenomena from a constant source can be analyzed by the solution of this diffusion equation. A hybrid computer simulation method to solve the three-dimensional nonuniform diffusion equation is described. The proposed technique can handle any geometric configuration of lakes and reservoirs. Using finite difference method, the partial differential equation is transformed into a set of algebraic equations. The analogy between these algebraic equations and the node equations of a passive resistance network plane makes the hybrid computer simulation technique applicable to solve problems of this type. A vertical plane, perpendicular to the direction of the wind, is simulated by a passive resistance network. The movement in the direction of the wind is discretized with resistances simulating the step size. The problem is solved by moving the vertical plane in the direction of the wind. Obtaining the solution using a simulation technique involves a repetitive process of observing voltages on the simulation network. The entire process is performed in the hybrid computer system using the digital computer as the control. This then is a general method available to analyze the evaporation phenomena using a mathematical solution of the diffusion equation.
TL;DR: In this paper, a two-dimensional diffusion model in the vertical plane is considered as an unsteady boundary value problem which is solved by applying Laplace transformation and finding Green's function.
Abstract: A two-dimensional diffusion model in the vertical plane is considered as an unsteady boundary value problem which is solved by applying Laplace transformation and finding Green's function. The effects of the surface (ground) absorption (measured by β) and the terminal velocity (w) present an alternative explanation other than considering the variable eddy diffusivities and the change of the wind with height.
TL;DR: Time-lapse photographs taken of a visual tracer laid in horizontal lines at several levels, one above the other, show convective motion of the air in a vertical plane as discussed by the authors.
Abstract: Time-lapse photographs taken of a visual tracer laid in horizontal lines at several levels, one above the other, show convective motion of the air in a vertical plane. Through minor improvements in technique a three-dimensional picture of the air motion could be achieved.
Journal Article•
TL;DR: In this article, the authors present a set of solutions for disabling, strain, and stress in a cross-anisotropic-antisotropic ELASTIC HALF space with a VERTICAL PLANE OF SYMMETRY.
Abstract: SOLUTIONS ARE PRESENTED FOR DISPLACEMENT, STRAIN, AND STRESS COMPONENTS PRODUCED THROUGHOUT A HOMOGENOEUS, CROSS- ANISOTROPIC ELASTIC HALF SPACE BY LOADINGS OF A PARTICULAR CLASS. THIS CLASS INCLUDES ONLY LOADINGS THAT ARE DISTRIB- UTED OVER A CIRCULAR AREA, AND THAT GIVE RISE TO A DEFORMA- TION FIELD WITH A VERTICAL PLANE OF SYMMETRY. THE LOADING CONDITIONS CONSIDERED ARE UNIDIRECTIONAL HORIZONTAL SHEAR STRESSES, A LINEAR VARIATION IN VERTICAL DIRECT STRESS, AND A LINEAR VARIATION IN VERTICAL DISPLACEMENT. /AUTHOR/