USERS

FIELD OF TECHNOLOGY

[001] The present invention relates to an apparatus for drawing embossed geometrical shapes and geometrical constructions for visually challenged and visually impaired users and, more particularly, to tactile geometric instruments.

BACKGROUND

[002] Visually challenged (VC) or visually impaired (VI) people (also referred to as 'Braille users' interchangeably in this document), use touch sensation to visualize a drawing. Hence, for a VC or VI person, the drawing needs to be either embossed (e.g., line drawings) or textured (e.g., area drawings). Since, geometrical figures are predominantly line drawings, the need is to have a geometry set such that the VC or VI person can construct embossed geometrical figures using the geometry set.

[003] Unfortunately, traditional 'Indirect tactile geometry set' for the VC or VI person does the opposite. This set includes a rubber- surfaced tactile clipboard, and a wheel marker that makes depressions on a braille paper placed on the tactile clipboard. The depressions are read by the VC or VI person by reversing the braille paper and feeling the embossment corresponding to the depressions on the reverse side of the braille paper. Unfortunately, the 'Indirect tactile geometry set' is incapable of drawing any meaningful geometrical figures that are required as part of learning geometry by the students belonging to VC or VI category. A VC or VI student finds it difficult to draw a simple geometric figure as per an instruction such as "mark two points 'P' and 'Q', and draw a line joining them" using the traditional tactile geometry set. For example, if the VC or VI student marks two points 'P' and 'Q' in the form of depressions on the braille paper, then the student can locate the points 'P' and 'Q' only on the reverse side of the braille paper. Hence it is difficult to draw the line joining the points 'P' and 'Q' on front side of the paper. Moreover, if the student draws a line joining points 'P' and 'Q' after feeling the points 'P' and 'Q' on the reverse side of the braille paper then the line joining the points 'P' and 'Q' is now felt on the front side of the braille paper. This limitation has blocked the VC or VI students from drawing any meaningful geometrical construction using the 'Indirect tactile geometry set'.

[004] However, there is also a 'Tactile drawing board' that uses 'Direct tactile drawing' approach for drawing, and hence is also used as geometry set. This board uses a special plastic film sheet placed over rubber- surfaced tactile clipboard and uses a stylus to create embossed impressions on it. Incidentally, while a user is able to draw a line, a circle, and an angle individually using this board, but unfortunately, finds great difficulty in drawing a full meaningful geometrical construction - comprising of multiple lines, angles, circles, and arcs as part of it - with accuracy.

[005] Based on the foregoing, there are disadvantages in the available tactile geometry sets for drawing meaningful geometric constructions. Hence, there is a need for geometric instruments with simplistic designs, which can draw on standard braille paper, and that can preclude the need of flipping the braille paper while constructing geometric figures, and that enables the VC or VI students to learn geometry in a convenient manner.

SUMMARY

[006] The following presents a simplified summary of the disclosure in order to provide a basic understanding to the reader. This summary is not an extensive overview of the disclosure and it does not identify key/critical elements or delineate the scope of the specification. Its sole purpose is to present a selection of concepts disclosed herein in a simplified form as a prelude to the more detailed description that is presented later.

[007] In an embodiment, an apparatus for drawing geometrical shapes and geometrical constructions for Braille users is disclosed. The apparatus includes a base plate and a clamping mechanism fixedly coupled to the base plate for securing a braille paper aligned over the base plate. The apparatus includes at least one magnetic point marker configured to be magnetically positioned at various portions of the base plate for defining a design layout plane for construction of geometrical shapes. The at least one magnetic point marker includes a protrusion for making an embossed point on the braille paper. The apparatus further includes a plurality of geometrical shape tracing members capable of being supported over the at least one magnetic point marker. Each geometrical shape tracing member includes a raised pattern representing a geometrical shape. When the braille paper is pressed against the raised pattern, an embossed geometrical shape corresponding to the geometrical shape is formed on the braille paper by suitable means.

[008] In another embodiment, a method of drawing geometrical shapes and geometrical constructions on a braille paper is provided. The method includes defining a design layout plane by positioning at least one geometrical shape tracing member comprising a raised pattern corresponding to a geometrical shape. The method also includes placing a braille paper over the at least geometrical shape tracing member, the placement defining an embossed drawing plane. Thereafter, the method includes drawing at least a portion of the geometrical shape by pressing the braille paper against the raised pattern of the at least geometrical shape tracing member by suitable means.

[009] Many of the attendant features will be more readily appreciated as the same becomes better understood by reference to the following detailed description considered in connection with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The invention itself, together with further features and attended advantages, will become apparent from consideration of the following detailed description, taken in conjunction with the accompanying drawings. One or more embodiments of the present invention are now described, by way of example only wherein like reference numerals represent like elements and in which:

[0011] Figure 1A illustrates an apparatus for drawing geometrical shapes and geometrical constructions for braille users, according to an embodiment of the present disclosure;

[0012] Figure IB illustrates a clamping mechanism of the apparatus, according to an embodiment of the present disclosure;

[0013] Figure 2 illustrates a point marker of the apparatus, according to an embodiment of the present disclosure;

[0014] Figure 3A illustrates a line marker of the apparatus, according to an embodiment of the present disclosure;

[0015] Figure 3B illustrates a stylus of the apparatus, according to an embodiment of the present disclosure; [0016] Figures 4A-4C illustrate construction of an embossed line joining two embossed points on a braille paper using the point marker and the line marker, according to an example embodiment of the present disclosure;

[0017] Figure 5A is a first perceptive view illustrating a magnetic ruler of the apparatus, according to an embodiment of the present disclosure;

[0018] Figure 5B is a second perceptive view illustrating the magnetic ruler of the apparatus, according to an embodiment of the present disclosure;

[0019] Figure 5C is a third perceptive view illustrating the magnetic ruler aligned with the point marker, according to an example embodiment of the present disclosure;

[0020] Figure 6A illustrates a line support of the apparatus according to an embodiment of the present disclosure;

[0021] Figure 6B illustrates a divider arm of the apparatus, according to an embodiment of the present disclosure;

[0022] Figure 6C illustrates a divider arm of the apparatus engaged with a divider, according to an embodiment of the present disclosure;

[0023] Figure 6D illustrates a divider arm of the apparatus engaged with a divider and a magnetic point marker, according to an embodiment of the present disclosure;

[0024] Figure 7A illustrates a circle marker of the apparatus, according to an embodiment of the present disclosure;

[0025] Figure 7B illustrates a multi arc maker of the apparatus, according to an embodiment of the present disclosure;

[0026] Figure 8A is a first perspective view of a protractor of the apparatus, according to an embodiment of the present disclosure;

[0027] Figure 8B is a second perspective view of the protractor of the apparatus, according to an embodiment of the present disclosure;

[0028] Figure 8C is a third perspective view of the protractor illustrating the point marker and a line marker for drawing and measuring an angle according to an example embodiment of the present disclosure; [0029] Figure 9A is a first perspective view of a set square of the apparatus according to an embodiment of the present disclosure;

[0030] Figure 9B is a second perspective view of the set square of the apparatus, according to an embodiment of the present disclosure;

[0031] Figure 9C is a first perspective view of a set square frame of the apparatus, according to an embodiment of the present disclosure;

[0032] Figure 9D is a second perspective view of the set square frame of the apparatus, according to an embodiment of the present disclosure; and

[0033] Figures 10A-10H illustrate a construction of an embossed perpendicular bisector of a line segment on the braille paper using the point marker, the line marker and the circle marker, according to an example embodiment of the present disclosure.

[0034] The drawings referred to in this description are not to be understood as being drawn to scale except if specifically noted, and such drawings are only exemplary in nature. The coloured drawings, if provided along with this description are only meant to make the details of invention clear and have no effect whatsoever on the scope of the invention.

DETAILED DESCRIPTION

[0035] While the invention is susceptible to various modifications and alternative forms, specific embodiment thereof has been shown by way of example in the drawings and will be described in below. It should be understood, however that it is not intended to limit the invention to the particular forms disclosed, but on the contrary, the invention is to cover all modifications, equivalents, and alternative falling within the spirit and the scope of the invention.

[0036] The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a setup, device or method that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or device or method. In other words, one or more elements in a system or apparatus proceeded by "comprises... a" does not, without more constraints, preclude the existence of other elements or additional elements in the system or apparatus. [0037] Various embodiments disclosed herein provide an apparatus that aid braille users for drawing geometrical shapes and geometrical constructions. The apparatus includes, among other components, a base plate, a clamping mechanism for holding braille paper onto the base plate, at least one magnetic point marker and a plurality of geometrical shape tracing members for aiding in drawing geometric figures or any such similar purposes involving geometry. Various embodiments of the apparatus and its components are described herein reference to Figures 1A to 10A-10H. For the better understanding of this invention, reference would now be made to the embodiment illustrated in the accompanying Figures and description below. Further, in the following Figures, the same reference numerals are used to identify the same components in various views.

[0038] While considerable emphasis has been placed herein on the particular features of this invention, it will be appreciated that various modifications can be made, and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other modifications in the nature of the invention or the preferred embodiments will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation.

[0039] Figure 1A illustrates an apparatus (100) for drawing geometrical shapes for braille users, according to an embodiment of the present disclosure. The apparatus (100) includes a base plate (102), a clamping mechanism (104), at least one magnetic point marker (106), and a plurality of geometrical shape tracing members. In the illustrated Figure 1A, an example geometrical shape tracing member (108) is shown, however there may be other configurations of geometrical shape tracing member (108) depending upon the intended geometrical shape, for example, a geometrical shape tracing member (700) as shown in Figure 7A. In an example, the base plate (102) is made up of a metallic surface and a rubber or any similar surface. In an implementation, the metallic surface is provided on a front side of the base plate (102) on which a braille paper (110) is aligned for writing or drawing purposes, and the rubber or any similar surface is fabricated on a reverse side of the base plate (102). Alternatively, the metallic surface is fabricated on the reverse side of the base plate (102) as well. In an example, the metallic surface of the base plate (102) may be of a ferromagnetic material. The base plate (102) further includes a plurality of notches (112) disposed on a right edge of the base plate (102) and a plurality of notches (114) disposed on a left edge of the base plate (102). Each of the corresponding notches of the plurality of notches (112) and (114) disposed on the right and the left edges of the base plate (102) are aligned to each other. It is noted that the notches (112) and (114) are configured to help a VC or VI person to place a ruler in a horizontal direction of the base plate (102).

[0040] The magnetic point marker (106) is configured to be magnetically positioned at various portions of the base plate (102), as the magnetic point marker (106) is supported onto the base plate (102) under influence of magnetic force. The magnetic point marker (106) includes a protrusion (202) that can generate an embossed point or even a hole on the braille paper (110). The magnetic point marker (106) is described in detail with reference to Figure 2.

[0041] In an embodiment, the geometrical shape tracing member (108) (hereinafter also referred to as 'tracing member (108)') can be supported onto the protrusion (202) of the magnetic point marker (106). The tracing member (108) is described in detail with reference to Figure 3 A. The tracing member (108) includes a raised pattern that confirms to a geometrical shape. Another example of the geometrical shape tracing member for generating an embossed impression of a circle is shown as a geometrical shape tracing member (700) in Figure 7A.

[0042] In an example, tracing member (108) disengageably engages with the magnetic point marker (106) in order to hold the tracing member (108) to the base plate (102), and when a suitable means such as a stylus is moved by aligning a raised pattern of the tracing member (108) into the stylus, a corresponding embossed geometrical shape is created on the braille paper (110). The embossed geometrical shape represents a geometrical shape of the raised pattern configured on the tracing members for example a shape of a line on the tracing member (108). The stylus is described in detail with reference to Figure 3B.

[0043] The clamping mechanism (104) may be designed in a variety of ways, and one such configuration is shown in Figure IB. Referring to Figure IB, the clamping mechanism (104) is shown as fixedly mounted on a substantially top portion of the base plate (102) for securing the braille paper (110) on the base plate (102). The clamping mechanism (104) includes a clamp (116) and a tiered base member (118). In a non-limiting example, the clamp (116) is hingedly coupled to the tiered base member (118). The clamp (116) includes one or more engagement members (120) in the form of slots and one or more magnetic members (122). The tiered base member (1 18) includes one or more pins (124) configured to engage with corresponding engagement members (120) (e.g., slots) such that the braille paper (110) is fixedly held between the clamp (116) and the tiered base member (1 18). The tiered base member (118) also includes one or more magnetic or metallic members ( 126) adapted to be aligned with the one or more magnetic members (122). The magnetic members (122) along with magnetic or metallic members (126), under magnetic attraction, facilitate easy engagement of the clamp (116) and the tiered base member (118) for holding the braille paper (1 10).

[0044] The tiered base member (118) is at a substantially elevated position above the base plate (102). The elevated position of the tiered base member (1 18) helps in holding the braille paper (1 10) at a height substantially above the base plate (102) such that geometric shapes can be easily accommodated between the braille paper (1 10) and the base plate (102). The pins (124) have a wedge like design, for example, designed with a slanted profile on one side from where the braille paper (1 10) can be slid over the pins (124). It is noted that such slanted profile of the pins (124) guides the braille paper (1 10) while positioning the braille paper (110) over the tiered base member (118). Thereafter, the clamp (116) is flapped down to be engaged with the tiered base member (118), to hold the braille paper (110) there between.

[0045] Referring to Figure 2, the magnetic point marker (106) includes a magnetic fin (206), in accordance with an embodiment. Herein, the magnetic fin (206) is shown in form of an irregular polygon (e.g., fan like design). In a non-limiting example, the irregular polygon is in the form of an irregular heptagon. However, the magnetic fin (206) can also be of other shapes such as triangular, rectangular or even circular. The point marker (106) further includes a magnet (204) positioned at a vertex (206a) (e.g., positioned at a tip or any one side portion) of the magnetic fin (206), and the protrusion (202) configured as emanating from a central portion of the magnet (204). The magnetic fin (206) is adapted for positioning the magnetic point marker (106) on various portions of the base plate (102). It will be appreciated that a flat configuration and optimum size of the magnetic fin (206) help in positioning the magnetic fin (206) onto the base plate (102) so that an unintentional movement of the magnetic fin (206) is avoided. The protrusion (202) of the magnetic point marker ( 106) is capable of creating an embossed point or a hole on the braille paper (110). The unique design of the magnetic fin (206) helps in marking line segments as small as 1.0 cm or lesser. [0046] An example representation of the tracing member (108) is shown in Figure 3A. The tracing member (108) shown in Figure 3A can be utilized for drawing a line by including but not limited to braille users. Throughout the present description, the tracing member (108) is also interchangeably referred to as 'line marker (108)'.

[0047] Referring to Figure 3 A, the line marker (108) includes an elongated body (302). The line marker (108) includes a raised pattern (304) formed along the length of the elongated body (302), and a groove (306) formed on opposite side of the raised pattern (304). The groove (306) of the line marker (108) is adapted to disengageably engage with the protrusion (202) of the magnetic point marker (106) in order support the line marker (108) on the base plate (102). The raised pattern (304) is in form of a line which can create an embossed impression on the braille paper (110) when the raised pattern (304) is pressed by suitable means over the braille paper (110). Without limiting to the scope of the present disclosure, an example of the suitable means is a stylus shown in Figure 3B. The line marker (108) is configured to be supported by a line support (602) (see, Figure 6A) with the help of the groove (306) placed over engagement members (606) for keeping the line marker (108) stable when creating an embossed impression on the braille paper (110).

[0048] In another example, the line marker (108) is configured to be supported over a protractor (800) (see, Figures 8A-8C) with the help of the groove (306) placed over engagement members (808) for drawing a line at a measured angle on the braille paper (110).

[0049] As shown in Figure 3B, a stylus (350) includes an elongated body (352) with a dual-pin head. The dual-pin head is configured at an end portion of the elongated body (352). In the example configuration, the dual-pin head includes a first pin head (354) and a second pin head (356). A gap (358) is formed in-between the first pin head (354) and the second pin head (356). The stylus (350) is moved by aligning the raised pattern (e.g., the raised pattern 304) with the gap (358) for forming embossed geometrical shapes on the braille paper (1 10) depending upon the configuration of the raised pattern (e.g., see 304). In an example embodiment, the stylus (350) also includes an erasing member (360). In an example, the erasing member (360) is configured on the side edge (e.g., a left side edge and/or a right side edge) of the elongated body (352). The erasing member (360) is adapted to erase embossed geometrical shapes from the braille paper (110) when the erasing member (360) of the stylus (350) is moved by pressing against an embossed geometrical shape on the braille paper (110).

[0050] The arrangement of the magnetic point markers (106) and the line marker (108) provided in the present disclosure offers benefits to the VC or VI users for drawing purposes, particularly in drawing an embossed line joining two points. Figures 4 A to 4C represent an example representation of a straight line joining two points on the braille paper (110) using the magnetic point markers (106) and the line marker (108).

[0051] Step 1 : In an embodiment, for drawing a line on the braille paper (110), the user places two magnetic point markers (106) on the base plate (102) for marking corresponding embossed points on the braille paper (110). For instance, upon placing a first magnetic point marker (106) and a second magnetic point marker (106) on the base plate (102), the user places the braille paper (110) over the first and second magnetic point markers (106) and pushes the braille paper (110) against the protrusions (202) of the magnetic point markers (106). Accordingly, embossed impressions (or holes) for the two points are marked on the braille paper (110).

[0052] If the user wants to draw a line of a fixed length (L) between two points, the user may place the first magnetic point marker (106) on a first point 'P' and the user can measure the length 'L' on the base plate (102) till a second point 'Q', using a magnetic ruler (500) (described with reference to Figures 5A to 5C). The user can thereafter, place the second magnetic point marker (106) at the point 'Q'. Thereafter, the user pushes the braille paper (110) against the protrusion (202) of the magnetic point markers (106). Accordingly, embossed impressions (or holes) for the two points 'P' and 'Q' are marked on the braille paper (110).

[0053] Step 2: After marking the two embossed points on the braille paper (110), as shown in Figure 4 A, the user aligns the line marker (108) onto the first and second magnetic point markers (106). The groove (306) of the line marker (108) is engaged with the protrusions (202) of the magnetic point markers (106). The arrangement of the first and the second magnetic point markers (106) onto the magnetic point markers (106) placed over the base plate (102) can be termed as a 'design layout plane'.

[0054] Step 3: As shown in Figure 4B, the user places the braille paper (110) over the line marker (108) to define an 'embossed drawing plane'. [0055] Further, an embossed line (452) is formed on the braille paper (110) when the user moves the stylus (350) by aligning the raised pattern (304) into the gap (358) of the stylus (350). The embossed line (452) is shown in Figure 4C.

[0056] The user may also be able to draw a line such as the embossed line (452) of a length desired by the user by using the magnetic ruler (500). Without loss of generality, magnetic ruler (500) is configured to be used with the magnetic point markers (106) to measure the length and accordingly adjust the placement of the magnetic point markers (106) on the base plate (102).

[0057] In the embodiment of the illustrated Figures 5A, 5B and 5C, the magnetic ruler (500) includes a magnetic ruler body (502) with a plurality of tactile markings (504) for measuring distance. The magnetic ruler body (502) is configured with a mechanical step (506) and a plurality of notches (510) disposed along the length of the ruler body (502) on a side of the mechanical step (506). The plurality of notches (510) is provided such that each of the tactile markings (504) has a corresponding notch (best shown by an enlarged view in Figure 5A). The plurality of notches (510) is configured to disengageably engage the magnetic point marker (106) with each of the tactile markings (504) of the magnetic ruler (500) for measuring distance. The mechanical step (506) is adapted to provide a perfect fit between the magnetic point marker (106) and the magnetic ruler body (502). In a non-limiting example, the resolution between two consecutive tactile markings (504) is 0.5cm. In a non-limiting example, the magnetic ruler body (502) includes a tactile marking for every 0.5 cm starting from the origin but for easy differentiation the tactile marking at every 1 cm is bigger than that of the 0.5 cm. In a non limiting example, for easy identification the magnetic ruler body (502) includes two raised dots as tactile marking for every 5 cm starting from the origin of the tactile markings. The magnetic ruler body (502) is configured with two or more magnetic members (508) for disengageably engaging the magnetic ruler (500) to the base plate (102). The tactile markings (504) can be designed in a variety of configurations. For example, as shown in illustrated Figures, the tactile markings (504) can be raised protrusions or raised dots that can be sensed by the VC or VI users with their fingers. One example representation of engagement of the magnetic ruler (500) with the protrusion (202) of the magnetic point marker (106) is shown in Figure 5C. [0058] If the line marker (108) is very long, substantially middle portion of the line marker (108) can be supported on the base plate (102) by using one or more line support (602) described with reference to Figure 6A.

[0059] Figure 6A illustrates a line support (602), according to an embodiment of the present disclosure. The line support (602) includes a rectangular plate (604) with engagement members (606). In a non-limiting example, the line support (602) is capable of supporting the line marker (108) via the engagement members (606) while drawing an embossed line (e.g., embossed line 452) on the braille paper (1 10). The groove (306) of the line marker (108) is disengageably engaged with a part of the rectangular plate (604) having the engagement members (606). The line support (602) is adapted to slide along the length of the groove (306) for better support of the line marker (108). Bottom side of the line support (602) includes a magnetic member (not shown in Figure 6A) for disengageably engaging the line support (602) with the base plate (102).

[0060] In an embodiment, the apparatus (100) also includes a divider arm (608) as shown in Figure 6B. Referring now to Figure 6B, the divider arm (608) is adapted to be inserted on top of a divider (see, 652 in Figure 6C). The divider arm (608) includes an oval shaped plate (610), a first engagement member (612) and a second engagement member (614). The first engagement member (612) is in a form of an elongated slot in which, a leg of the divider (652) can be easily inserted as shown in Figure 6C. The second engagement member (614) is adapted to be disengageably engaged with the magnetic point marker (106) in order to place the divider arm (608) onto the base plate (102) for using the divider (652), as shown in Figure 6D.

[0061] Referring to Figure 7A, another example of the geometrical shape tracing member is shown, in accordance with an embodiment of the present disclosure. In the illustrated Figure 7A, the geometrical shape tracing member is shown as a circle marker (700), and it can be interchangeably referred to as a tracing member (700) or the circle marker (700). The circle marker (700) can be used for drawing at least a portion of the circle, for example, an arc or entire circle on the braille paper (110).

[0062] The circle marker (700) includes a wheel (702) and a raised pattern (704) is disposed on top of the wheel (702). The raised pattern (704) is in a form of a circle configured substantially on periphery of the wheel (702). The wheel (702) is in a form of a circular body with plurality of inner line extensions (706) connecting with an engaging member (708). The engaging member (708) with a hollow circular centre (710) is positioned at the centre of the wheel (702). The engaging member (708) is capable of being disengageably engaged with the magnetic point marker (106) in order to support the wheel (702) on the base plate (102). For example, the engaging member (708) is in a form of a slot. In a non-limiting example, the circle marker (700) is used to draw an embossed circle or an embossed semi circle on the braille paper (110) depending the type of geometric construction. In the illustrated Figure 7A, an example circle marker (700) is shown, however there may be plurality of wheels with varying radii. Referring to Figure 7A, the radius value is marked on the engaging member (708) in embossed braille (712b). The circle marker (700) is used for drawing circles with radii including but not limited to 3 cm, 4cm, 5cm, 6cm, 7 cm and 8 cm.

[0063] Referring to Figure 7B, another example of the geometrical shape tracing member is shown, in accordance with an embodiment of the present disclosure. In the illustrated Figure 7B, the geometrical shape tracing member is shown as a multi arc marker (750), and it can be interchangeably referred to as a tracing member (750) or the multi arc marker (750). The multi arc marker (750) can be used for drawing at least a portion of the circle, for example, an arc or entire circle on the braille paper (110).

[0064] The multi arc marker (750) includes a plurality of arc members (752; 754; 756), in the illustrated embodiment three such arcs are depicted as a first arc member (752), a second arc member (754) and a third arc member (756). The multi arc marker (750) further includes a raised pattern (758) is disposed on top of each the arc members (752, 754, and 756). The stylus (350) is moved by aligning the raised pattern (e.g., the raised pattern (758)) with the gap (358) for forming embossed geometrical shapes on the braille paper (110) depending upon the configuration of the raised pattern (e.g., see (758)).

[0065] The raised pattern (758) is in a form of an arc configured substantially on periphery of each of the arc members (752, 754, and 756). Each of the first arc member (752), the second arc member (754) and the third arc member (756) is having a different radius. The multi arc maker (752) includes a plurality of inner line extensions (760) connecting each of the first, the second and the third arc (752, 754 and 756) with an engaging member (762). The engaging member (762) includes a hollow circular centre (764) positioned at the centre of the multi arc marker (750). The engaging member (762) is capable of being disengageably engaged with the magnetic point marker (106) in order to support the multi arc marker (750) on the base plate (102). In the illustrated example, the engaging member (762) is in a form of a slot.

[0066] In the illustrated Figure 7B, the example multi arc marker (750) is shown, however there may be a plurality of arc markers designed with varying radii, as per need and design constraints. The varying radii of the first, second and the third arc members (752, 754 and 756) are marked on the engaging member (762) in embossed braille as (752a, 754a and 756a) for easy recognition of the radii of the arc members (752, 754 and 756). The multi arc marker (752) is used for drawing arcs and/or circles with radius including but not limited to 3.5 cm, 4.5 cm, 5.5 cm, 6.5 cm, 7.5 cm and 8.5 cm.

[0067] In some embodiment, the apparatus (100) can also includes a protractor for drawing a line at any desired angles by the VC/VI users, as described with reference to Figures 8A, 8B and 8C.

[0068] Referring to Figures 8A, 8B and 8C, perspective views of a protractor (800) for creating embossed shapes of a plurality of angles on the braille paper (110) is shown, according to an embodiment of the present disclosure. Particularly, Figure 8A represents a first perspective view (a top side view) of the protractor (800) and Figure 8B represents a second perspective view (a bottom side view) of the protractor (800). The protractor (800) includes a circular plate (802) with a plurality of tactile markings (804) and an exterior line extension (812). The exterior line extension (812) extends outwardly from a point offset from a center of the protractor (800) for defining a zero degree angle. The exterior line extension (812) includes a groove (816) on a bottom side of exterior line extension (812). The groove (816) is adapted to disengageably engage with the protrusion (202) of the magnetic point marker (106) in order to support the protractor (800). The plurality of tactile markings (804) is for measuring an angle. The exterior line extension (812) is made for marking the 0 degree angle on the protractor (800). The circular plate (802) is disposed with a hollow circular centre (810). The protractor (800) also includes a plurality of inner line extensions (806) for connecting with the engagement member (808) of the circular plate (802). In an example, the hollow circular centre (810) of the protractor (800) is adapted to disengageably engage the protractor (800) with the magnetic point marker (106) in order to support the protractor (800) on the base plate (102). In a non-limiting example, the resolution between each tactile marking (804) is 5 degree.

[0069] In an example embodiment, the protractor (800) is configured with two magnetic members (814). The tactile markings (804) can be designed in a variety of configurations. For example, as shown in illustrated Figures, the tactile markings (804) can be raised protrusions or raised dots that can be sensed by the VC or VI users with their fingers.

[0070] An example representation of aligning the line marker (108) to draw an angle is shown in Figure 8C. While the exterior line extension (812) is used to mark the zero-degree angle, the raised protrusion of the tactile marking (804) and the magnetic point marker (106) engaged at the hollow circular centre (810) are adapted to disengageably engage with the line marker (108) in order to draw a line at an angle as required for drawing the geometric figures.

[0071] Referring to Figures 9A and 9B, perspective views of a set square (900) is shown, according to an embodiment of the present disclosure. Particularly, Figure 9A represents a first perspective view (a top side view) of the set square (900) and Figure 9B represents a second perspective view (a bottom side view) of the set square (900). The set square (900) includes a right-angled triangular plate (902) with a plurality of tactile markings (904) for drawing parallel lines and/or perpendicular lines on the braille paper (110). In a non-limiting example, the resolution between each tactile marking (904) is 0.5cm. The tactile markings (904) can be designed in a variety of configurations. For example, as shown in illustrated Figure 9A, the tactile markings (904) can be raised protrusions along with raised dots that can be sensed by the VC or VI users with their fingers. Further, the set square (900) includes a plurality of notches (912). The plurality of notches (912) are provided along sides of the set square (900) having the tactile markings (904). The plurality of notches (912) is provided such that each of the tactile markings (904) has an associated notch.

[0072] As shown in Figure 9B, the set square (900) is configured with a mechanical step (908). The mechanical step (908) is disposed onto the right-angled triangular plate (902). The plurality of notches (912) is capable of being disengageably aligning the magnetic point marker (106) with each of the tactile marking (904) of the set square (900). The mechanical step (506) is adapted to provide a perfect fit between the magnetic point marker (106) and the set square (900). The set square (900) is configured with a pair of magnetic members (910). The pair of magnetic members (910) is adapted to magnetically align the set square (900) on a portion of the base plate (102). In an example embodiment, the pair of magnetic members (910) is mounted on the right and the left edges of the right-angled triangular plate (902).

[0073] Referring to Figures 9C and 9D, perspective views of a set square frame (950) are shown, according to an embodiment of the present disclosure. The set square frame (950) includes a right-angled triangular frame (952). The right-angled triangular frame (952) includes a plurality of internal extensions (954). The internal extensions (954) are formed by joining two sides of the right-angled triangular frame (952). The set square frame (950) includes a raised pattern (956) configured substantially on top of the right-angled triangular frame (952). The stylus (350) is moved by aligning the raised pattern (e.g., the raised pattern (956)) with the gap (358) for forming embossed geometrical shapes on the braille paper (110) depending upon the configuration of the raised pattern (e.g., see (956)). The set square frame (950) is used for drawing angles including but not limited to 30 degree, 60 degree and 90 degree. In an embodiment, the set square frame (950) has grooves (958) at the bottom to slide over the magnetic point marker (106). In an embodiment, the internal extensions (954) may include support in a substantially middle portion to avoid bending of the internal extensions (952).

[0074] The arrangement of the magnetic point marker (106), the line marker (108), and the circle marker (700), provided in the present disclosure, offers benefits to the VC or VI users in drawing geometric figures and geometrical constructions. Figures 10A to 10H represent an example representation of construction of the embossed perpendicular bisector of the line segment on the braille paper (110) using a magnetic point marker (106), a tracing member such as a line marker ( 108) and a tracing member such as a circle marker (700).

[0075] Referring to Figures 10A and 10B, the line marker (108) and the circle marker (700) are the examples of the geometrical shape tracing member. In first step, the user positions two magnetic point markers (106) on the base plate (102) with a distance of 8 cm between each other using magnetic ruler (500) for measuring the distance, then the user aligns the braille paper (110) on top of the two point markers ( 106) in order to mark two embossed points on the braille paper (110). In second step, the user aligns the line marker (108) (refer Figure 10A) on top of the two point markers (106) in order to draw an embossed line segment (1002) on the braille paper (110) with the help of the stylus (350). The line segment (1002) is shown in Figure 10B. [0076] In third step, the user removes the line marker (108) from the base plate (102) and aligns the circle marker (700) on top of a point marker (106). In fourth step, the user aligns the braille paper (1 10) on top of the arrangement which includes the point marker (106) and the circle marker (700). As shown in Figure 10D, after the alignment of the braille paper (110) on top of the arrangement, the user draws an embossed first arc (1004) by aligning the raised pattern (704) into the gap (358) (not shown in Figure 10D) of the stylus (350) and by moving the stylus (350) in a clock wise direction. In fifth step, the user draws an embossed second arc ( 1006) on the braille paper (110) by moving the stylus (350) in a counter clock wise direction as shown in Figure 10E. An example representation of the line segment (1002), the first arc (1004) and the second arc (1006) are represented in Figure 10F. Intersection points of the first arc (1004) and the second arc (1006) are shown by reference numerals 1008a and 1008b. In sixth step, the user places two point markers (106) on the base plate (102) aligned below the intersection points 1008a and 1008b respectively, and then places the line marker (108) over the point markers (106), in order to draw an embossed line (1008) (refer Figure 10G) joining a perpendicular bisector of the line segment (1002). The embossed perpendicular bisector line segment (1008) is shown in Figure 10H.

[0077] Various embodiments of the present invention also provide a method for drawings geometric shapes and geometrical constructions on a braille paper such as the braille paper (1 10).

[0078] The method includes defining a design layout plane by positioning at least one geometrical shape tracing member for example, geometrical shape tracing members 108, 700, 750, or 950, where each geometrical shape tracing member includes a raised pattern corresponding to a geometrical shape. For instance, the tracing member (108) has the raised pattern (304) and the tracing member (950) has the raised pattern (956) in form of a line, whereas the tracing member (700) has the raised pattern (704) and the tracing member (750) has the raised pattern (758) in form of a circle or arc.

[0079] The method further includes placing a braille paper (e.g., braille paper (1 10)) over the at least one geometrical shape tracing member, for example geometrical shape tracing members (108, 700, 750, 950). It is noted that the placement of the braille paper (110) defines an embossed drawing plane on which geometrical shapes corresponding to the geometrical shape tracing members (108, 700, 750, 950) can be drawn. [0080] The placement of the braille paper over the geometrical shape tracing members can be performed using a tiered clamp mechanism. For instance, when the geometrical shape tracing members are positioned on the base plate (102) such that the tiered clamp base provides a height substantially same as the heights of the geometrical shape tracing members so that the braille paper (110) can be positioned at a height onto the base plate (102). Further, the tiered base member (118) and the clamp (116) of the clamping mechanism secure the braille paper (110) between the tiered base member (118) and the clamp (116).

[0081] Without in any way limiting the scope, interpretation, or application of the claims appearing below, a technical effect of one or more of the example embodiments disclosed herein is to provide an apparatus for drawing geometrical shapes and geometrical constructions that can be easily used by Braille users. The usage of the geometrical shape tracing members with raised pattern provides convenience to VC or VI user while constructing the geometric shapes on the braille paper. Embodiments of the present invention provides a clamping mechanism for drawing geometrical shapes, for example, tiered base member (118) provides a height adjustment for placing the braille paper (110) over the tracing members positioned over the base plate (102), and the clamp (116) secures the braille paper (110) between the tiered base member (118) and the clamp (116). It may be termed that the base plate (102) configures a design layout plane for placing the intended geometrical shape tracing members and the tiered base member (118) configures an embossed drawing plane enabling VC/VI user to draw embossed geometrical shape on the braille paper.

[0082] While considerable emphasis has been placed herein on the particular features of this invention, it will be appreciated that various modifications can be made, and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other modifications in the nature of the invention or the preferred embodiments will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation.