ES2288050A1 - USEFUL FOR THE GRAPHIC PRINTING OF ELIPSES. - Google Patents

Abstract

ethyl to obtain graphical ellipses. Planned to allow the continuous drawing of an elliptical line on a paper or similar surface, acting in a similar way to what is done with a classic compass, a vertical and fixed upright (1) participates in it, intended to be located in correspondence with the center of the ellipse to be obtained, with a bend (4) at its upper end acting as a freely rotating axis for a revolving handle (5), to which an oblique bushing (8) located at the level of the bend is eccentrically attached ( 3) of the upright and with which a second bushing (9) collaborates parallel to the first, housing in these bushings (8) and (9) a deformable parallelogram (11-13-16}, in which a tubular body (16) participates. ) that permanently maintains parallelism with the fixed upright (1) and in which a writing element (17) in charge of making the line on the paper is vertically and freely movable.The inclination of the bushings (8) and their eccentric positioning , they make in the rotary movement of the handle (5) produces a planetary displacement of the writing element (17), with progressive approximation and distancing with respect to the upright (1), to achieve the pursued elliptical stroke.

Description

Useful for graphic printing of ellipses.

Object of the invention

The present invention relates to a tool that It has been specially designed to allow, through a continuous tracing maneuver similar to that of a compass, the Obtaining ellipses of any size, within certain limits determined by the instrument's own dimensions.

The invention thus falls within the scope of the apparatus and instruments of technical drawing.

Background of the invention

In the practical scope of the invention is often the need to trace ovals or ellipses of different dimensions

Currently and to trace the same templates used on a plate are used, usually of plastic material, mostly occupied by a plurality of elliptical configuration windows, with different sizes, in order to select at all times the most suitable.

Although these templates offer a wide range of possible dimensions, in practice it is frequent that the ellipse to be traced does not conform to any of those provided in the template, so that its dimensions are included between two of them, with what in practice and to cover all the needs is necessary to have a range of templates very wide, almost unlimited, which brings with it, on the one hand a remarkable structural complexity, derived from the number and size of templates, and on the other a difficulty locating the appropriate to the needs of each case.

Description of the invention

The tool for obtaining ellipse graphs that the invention proposes resolves in a fully satisfactory manner the problem described above, so that said useful is able to trace directly on paper any Ellipse of any size.

For this purpose, this tool is structured from of a vertical upright, equipped with a multi-point support base which ensures perfect stability of the tool on paper, with a perfect verticality for the mentioned amount, which suffers by its upper extremity an obtuse bending, with an angle adequate to the disproportion between axes of the ellipse to obtain.

This bending will preferably be articulated. and equipped with fixing means, to be able to regulate at will disproportion between axes of the ellipse.

The terminal, upper and elbow section of said upright constitutes a pivot axis for a rotating handle, when who is in solidarity with a single-piece character a cap capable of make a planetary movement around said axis, while on the vertical upright and below that bending, a second trained bushing is also established to describe a planetary movement around the stud, associated with the latter by means of a sleeve that allows said planetary movement, being also its axis parallel to that of the first cap

These two parallel bushes are crossed by two arms of considerable length, related to each other, on one end by a link and on the other by a tubular body, so that these four elements, the two arms, the link and the tubular body, define a parallelogram deformable, in which the tubular body, intended to accommodate in its inside a suitable writing element of any kind conventional, always maintains an upright position.

The size of the ellipse is determined by the effective length of said parallelogram arms deformable, that is, the length of them that separates the tubular body of the bushings they pass through, for which purpose these caps are equipped with two prisoners that allow fix the arms to them in any desired position.

The writing element, in diameter under-sized with respect to that of the tubular body, it will tend to simple gravity to rest on the paper, making the layout of the ellipse due to its own weight, although it is feasible to provide said writing element of any element that tends to project it down, to get one more dial crisp

According to this structuring in each turn 360º supplied to the rotating handle, the tubular body passes of a lower boundary situation, corresponding to the minor axis of the ellipse, at a position at medium height, in which the arms they are horizontal, corresponding to the major axis of the ellipse, to continuation to an upper limit situation in which the distancing of the writing element from the center of the ellipse is again minimal, and then descends again, until reaching the initial situation and lower limit, completing The stroke of the ellipse.

In this way a tool or device is achieved operable similar to a conventional compass, but in instead of allowing to obtain a circumference allows the Obtaining an elliptical stroke.

Description of the drawings

To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical realization of it, is accompanied as part member of that description, a set of drawings where with illustrative and non-limiting nature, what has been represented next:

Figure 1.- Shows a representation schematic side elevation and partial section of a tool for graphical ellipses obtained according to the object of the present invention, in which with continuous stroke and discontinuous the two upper limit positions have been represented and lower for its tilting structure.

Figure 2.- Shows a profile of the device of the previous figure.

Figure 3.- Shows, finally, a view in plant of the same tool or device.

Preferred Embodiment of the Invention

In view of the figures outlined you can Observe how the tool proposed by the invention is constituted to from a vertical and fixed amount (1), topped by its lower limb on a support base (2), equipped with any configuration that ensures perfect stability of the upright (1) in its vertical working position, while at its tip upper said amount (1) suffers an obtuse bend (3) determinant of a short terminal section (4), in axis functions with freedom of rotation for a rotating handle (5), equipped with free end of a knob (6) to facilitate its handling, and in its other end of a blind sleeve (7) to which it is attached tightly said shaft (4).

The sleeve (7) is eccentrically integral with a bushing (8), located at the level of the bend (3) of the upright (1), so that in the maneuver turning maneuver (5) said bushing (8) is capable of making a planetary movement around the stud (1), and within an imaginary plane inclined.

On said amount (1) a second is established bushing (9), parallel and similar to the previous one (8), which in turn is mounted with freedom of rotation on the upright (1) with the collaboration of a sleeve (10) which is also duly in solidarity, with the same degree of eccentricity as the bush (8).

The bushings (8) and (9), with parallel shafts such as  previously said, they are crossed by two arms (11) which are fixed to said bushings (8-9) by respective prisoners (12), both arms being related each other by one of its ends by means of a connecting rod (13), to through joints (14), while at the other end said arms (11), through joints (15), are in turn attached to a tubular body (16) that forms with said arms (11) and with the connecting rod (13), as previously stated, a deformable parallelogram, through which the lower bushing (9) is suspended or hung from the upper bushing.

The tubular body (16) is intended to accommodate any conventional and appropriate writing element (17), with with respect to the one that is properly oversized to allow that said writing element (17) slide over it and adopt always Tina lower limit position of support on the paper, by effect of its own weight, or with the collaboration of any accessory that tends to move it down.

According to this structuring and from the lower boundary situation for the tubular body (16) shown in a continuous line in figure 1, when the handle is turned (5) caps (8) and (9) describe a planetary movement that brings with it that the arms (11) suffer a movement progressively ascending, until reaching the limit situation upper represented in dashed line in said figure, from where they return again to the initial position, so that the tubular body (16) also describes a planetary movement, but with an elliptical orbit, because its distancing with with respect to the fixed amount (1) it is variable depending on the degree of tilt of the arms (11), which results in a path also elliptical on the paper located under said element of writing (17).

The size of the ellipse obtained can be regulated at will by loosening the prisoners (12), shortening or lengthening of the effective arm sector (11), and new tightening of said prisoners (12).

In any case a rotating movement of 360º supplied to the handle (5), determines a complete layout and Continuous ellipse on paper.

Claims (6)

1. Useful for the graphic ellipse obtaining, whose purpose is the continuous tracing of the ellipse on a flat surface, is characterized by being constituted from a fixed amount (1), topped by its lower end in base rune (2 ) suitably configured to keep the upright (1) in a vertical position and without rotation, said upright (1) presenting, near its upper extremity, an obtuse bending (3) determining a terminal section (4), oblique, in functions of axis of free rotation for a rotating handle (5), to which a first bushing (8), eccentric with respect to the upright (1), which collaborates with a second bushing (9), also eccentrically mounted on the upright (1) ) below the bend (3), to provide, by means of the rotary movement of the handle (5) a planetary movement to a deformable parallelogram (1143-16), in which a tubular body (16) participates as one of its elements, that keeps per a situation of parallelism with respect to the amount (1) and that it houses inside, with the possibility of free vertical displacement, a writing element (17), it being provided that the aforementioned bushes (8) and (9) adopt a remarkable inclination with respect to the upright (1) to supply to the arms (11) participating in the deformable parallelogram, during the planetary movement of the latter, an upward / downward tilting movement. 2. Useful for the graphic ellipse obtaining, according to claim 1, characterized in that the rotating handle (5) incorporates in its free end a knob or handle (6) at its other end a blind sleeve (7) in which the shaft (4) that tops the upper end of the upright (1), the oblique and upper bushing (8) being integral with said sleeve (7). 3. Useful for the graphic ellipse obtaining, according to claim 1, characterized in that the upright (1) itself and the upper axis of rotation (4) that tops it, are articulated jointly through its bending (3) and have blocking means in any relative position, to regulate at will the degree of inclination of said axis of rotation (4) and, consequently, the disproportion between axes of the ellipse to be obtained. 4. Useful for graphic ellipse obtaining, according to claim 1, characterized in that the bushes (8) and (9) of parallel axes, which are crossed by the arms (11) of the deformable parallelogram, are provided with fixing means for said arms (11), such as prisoners (12), which allow to regulate at will the effective length of said arms (11) between the tubular body (16) and the post (1), to obtain ellipses of different sizes. 5. Useful for graphic ellipse collection, according to claim 1, characterized in that the lower bushing (9) is mounted eccentrically on the fixed post (1) with the collaboration of a sleeve (10) that conveniently separates said bushing (9) from the amount (1). 6. Useful for graphic ellipse collection, according to claim 1, characterized in that the writing element (17) plays comfortably within the tubular body (16), so that it tends to rest by simple gravity on the printing surface, having provided that said writing element is optionally assisted by an elastic pressing element that tends to its vertical and downward displacement, to obtain a greater sharpness in the line on the paper.