WO2019016832A1

WO2019016832A1 - A multifunction drawing apparatus

Info

Publication number: WO2019016832A1
Application number: PCT/IN2018/050465
Authority: WO
Inventors: Aditya Hemant JOSHI; Hemant Jagannath JOSHI
Original assignee: Joshi Aditya Hemant; Joshi Hemant Jagannath
Priority date: 2017-07-19
Filing date: 2018-07-17
Publication date: 2019-01-24

Abstract

Present invention in general relates to a multifunction drawing apparatus for drafting fundamental geometric elements. A multifunction drawing apparatus comprising of improved ruler and an improved SETS OR T square, in which ruler body is made of transparent material with markings of length along the edges and the markings of conventional angles originating from the midpoint of an edge of the ruler to accurately mark lines at that angle simultaneously saving time and energy. The improved SETS OR T square when combined with the improved ruler, user can draft parallel line segments at desired distance accurately and rapidly. Following invention is described with the help of Figure 1a and 1b of sheet 1 showing elevational front view and left side view respectively of the improved ruler and Figure 2 of sheet 2 showing elevational front view and left side view respectively of embodiment of the improved SETS OR T square.

Description

Title: A multifunction drawing apparatus

DESCRIPTION

Technical field of invention:

Present invention in general relates to provide a multifunction drawing apparatus for drafting fundamental geometric elements and in particular to design an improved ruler and an improved Sets or T square.

Prior art:

Various drafting devices have been invented which provide a means to draft the offset of a straight line, to measure and draft a segment of required magnitude at a desired angle, and other types of functions which may come across during drafting of a figure, diagram or a sketch. While many of those devices perform their respective function, those devices are normally either inaccurate, less efficient, time consuming, costly, or have defective handling. Such disadvantages result in overall degradation of the project under supervision.

US 7080459 B l discloses thread ruler and a multi- function drafting instrument. The Thread Ruler and Multi-Function Drafting Instrument is a single instrument designed to draw circles, ellipses and parallel lines, and which includes features that allow the instrument to function as protractor, a ruler and a drawing compass. The instrument has a slide ruler that holds a marking device and that has a stem with a thread attached. The thread is further attached to the main ruler body at an outer end of the protractor so that ellipses can be drawn. The instrument may be used on any flat marking surface including: paper, drafting table, chalkboard and dry erased board. The instrument may be adapted to be used in portable manner so that it can be placed in shirt pocket. US 9076261 B2 discloses virtual drafting tools. Various disclosed embodiments include methods and systems for creating a virtual geometric model. According to disclosed embodiments, a data processing system for creating a virtual geometric model includes at least one processor and a memory connected to the processor. The data processing system is configured to generate a virtual drafting tool and a virtual marking device. The data processing system is configured to position the virtual drafting tool on a page and to position the virtual marking device relative to the virtual drafting tool. The data processing system is configured to draw the geometric model on the page by laying down ink by the virtual marking device using the virtual drafting tool and to store the geometric model in the memory.

CN 201432519 Y discloses labor-saving compass. The utility model relates to a drawing compass, in particular to an accurate labor-saving drawing compass, which is characterized in that the utility model comprises a fixing rod, a handle, a bracket, a clamping piece, a sliding piece and a fixing cone, wherein the fixing rod is arranged in the middle of the bracket; the handle is arranged at one end of the fixing rod opposite to the bracket; the fixing cone is arranged at one end of the fixing rod opposite to the handle; the sliding piece is arranged at any one of both ends of the bracket divided by the fixing rod; the clamping piece is arranged on one side of the sliding piece parallel with the fixing rod; and the fixing cone is arranged on the fixing rod corresponding to the other end of the handle. The handle is wide and large, there by the handle can be firmly held. When a circle is drawn, the utility model shakes to draw the circle accurately, the radius of the circle can be adjusted by scales, any pen can be clamped by the clamping piece, and old pencil leads do not need.

CN 201872474 U relates to the field of study supplies, in particular to a compasses which comprises a bracket, a suction cup, a slide block and a fixed jacket, and is characterized in that the suction cup is fixed at one side of the bracket which is provided with a slide slot, the slide block is fixed in the slide slot, and the bottom of the slide block is connected with the fixed jacket. The compasses can be provided with scales on the bracket, when the compasses is used, a user can set the size of the radius of an arc to be drawn according to needs; as the compasses is fixed by the suction cup, the defects that the drawing paper is damaged as the compasses is fixed by a fixed pin in the prior art as well as hard drawing paper is difficult to fix are effectively overcome; the length of the radius of the round to be drawn can be set flexibly by moving the slide block in the slide slot; compared with the prior art, the compasses can realize drawing through a single bracket, thus reducing the volume of the compasses remarkably, and the compasses has the advantages of reasonable structure, portability, accuracy and reliability, convenient use, and the like.

CN 105252937 A discloses an improved accurate measurement compass. The improved accurate measurement compass comprises a main scale with scales, a fixing rod connected with the main scale and a propelling pencil, wherein the fixing rod and the propelling pencil are arranged on the same side and are both perpendicularly connected with the main scale. The improved accurate measurement compass further comprises a control mechanism used for adjusting the propelling pencil to move back and forth in the length direction of the main scale. Circles with specific scales can be accurately drawn through the compass, and compared with an existing ordinary compass, errors are reduced. Meanwhile, through cooperative use of the fixing rod and a positioning rod of the compass, the scale of an object needing measuring can be read out easily, and the improved accurate measurement compass can be used as a measurement tool.

US 20030154608 Al discloses a multi-function drafting instrument. A drafting instrument is disclosed that functions as a protractor, compass and ruler. The instrument is ideally suited for flat surfaces used for marking including: paper, dry erase board, chalkboard and drafting table. The instrument accommodates pencils, pens, chalks and markers and facilitates the drawings of arcs, circles and parallel lines. The instrument has a built-in protractor for measuring and drawing angles and multiple rulers for measuring distance and drawing straight lines. The preferred embodiment of the instrument is two-piece with an arm shaped main ruler and a single slide-ruler that freely slides in and out of the main-ruler. A place ring with thumbscrew is attached to the slide-ruler to hold a writing tool such as pencil, pen, chalk or marker.

CN 103213428 A discloses multifunctional teaching ruler and compass. A multifunctional teaching ruler and compass comprises a strip-shaped ruler and compass body, an angle rotating mechanism, a protractor and an arc drawing mechanism. A fixed sliding chute and a protractor containing groove are oppositely formed on opposite surfaces of the ruler and compass body; one end of the ruler and compass body is provided with a fixing hole; the angle rotating mechanism comprises an angle dial, an angle indicator, and a rotating shaft provided with a stopping cover; the arc drawing mechanism comprises three pulleys, two slide blocks, a sucker pin and a flexible wire; drawing is carried out through the angle rotating mechanism and the protractor arranged on the ruler and compass body; when a circle is needed to be drawn, the sucker pin is inserted into an insertion hole in one slide block of the arc drawing mechanism, the sucker pin is stably absorbed by a blackboard, a pen is inserted into an insertion hole in the other slide block, so the circle is drawn by taking the sucker pin as a central positioning pin. By adopting the multifunctional teaching ruler and compass, teachers can draw conveniently, and then the drawing time in class can be saved.

Therefore to prevent the shortcomings of the existing geometrical instruments there is need to design and implement an improved and accurate apparatus for geometrical drafting. Hence the present invention designs and develops a multifunction drawing apparatus for drafting fundamental geometric elements.

Object: Primary object of the present invention is to provide a multifunction drawing apparatus for drafting fundamental geometric elements. Another object of the present invention is to provide an improved ruler to draft an offset of desired length to a straight line, or to draft a straight line with respect to a point at a defined distance. Yet another object of the present invention is to provide improved Sets or T square which engage with the improved ruler for drafting the above- mentioned offset. Yet another object of the present invention is to draft the above- mentioned offset with greater accuracy. Yet another object of the present invention is to reduce the number of steps and draftsman effort while drafting the above-mentioned offset. Yet another object of the present invention is to ensure that there is only axial motion for the improved Sets or T square. Yet another object of the present invention is to increases the horizontal range of the invention to draft the offset line or a segment. Yet another object of the present invention is to draft a line or segment at a conventional angle with respect to a base line or axis, of desired magnitude accurately in least number of steps. Yet another object of the present invention is to draft regular polygons of 3, 4, 5, 6, 8 and 12 sides in least number of steps. 10. Yet another object of the present invention is to draft star polygons of desired magnitude accurately in least number of steps.

11. Yet another object of the present invention is marking 3, 4, 5, 6, 8 and 12 number of sectors in a circle accurately in least number of steps.

12. Yet another object of the present invention is to hatching at 30, 45 and 60 degree in an area at desired offset accurately in least number of steps.

13. Yet another object of the present invention is to provide a protractor and a semi-circular slot for marking of required angle on the drawing sheet.

14. Yet another object of the present invention is to design ruler body made up of transparent material with markings of length along the edges.

15. Yet another object of the present invention is to draft parallel line segments at a desired distance accurately and rapidly.

Other objects, features and advantages will become apparent from detail description and appended claims to those skilled in art.

STATEMENT:

Accordingly following invention provides a design and development of a multifunction drawing apparatus which helps in drafting of fundamental geometric elements such as parallel and perpendicular lines, conventional angles, and frequently used regular polygons and star polygons of desired magnitude using an improved embodiment of the traditional ruler and Sets or T squares on the drawing board. The invention consists of an improved ruler (10) and an improved Sets or T square (20). The improved rule (10) when engaged with the improved SETS OR T square (20) can be used to draft parallel line segment of required length to an existing line or line segment at a desired distance. Moreover, the improved ruler (10) can also be used to draft a line segment of required length at any of the provided angles on the improved ruler (10). This property of the present invention can be further used to draft regular polygon of 3, 4, 5, 6, 8 and 12 sides of desired length, marking 3, 4, 5, 6, 8 and 12 number of sectors in a circle, hatching at 30, 45 and 60 degree. Moreover, star polygons can also be constructed similarly.

BRIEF DESCRIPTION OF DRAWING:

This invention is described by way of example with reference to the following drawing where,

Figure la of sheet 1 shows an elevational front view of the improved ruler.

Where,

1 denotes centimeter measuring scale

3 denotes center line

5 denotes angular indication

6 denotes 30° indication

7 denotes 45° indication

8 denotes 60° indication

9 denotes inches scale

10 denotes Improved ruler

12 denotes centimeter scale.

Figure lb of sheet 1 shows a left side view of the improved ruler.

Where,

15 denotes slot.

Figure 2a of sheet 1 shows an elevational front view of another embodiment of the improved ruler.

Where, 18 & 19 denotes scales

20 denotes ruler.

Figure 2b of sheet 1 shows a left side view of another embodiment of the improved ruler.

Where,

21 & 22 denotes slots adjacent to 18 and 19 respectively.

Figure 3a of sheet 2 shows an elevational front view of an embodiment of the improved SETS OR T square.

Where,

31 denotes component

32 denotes movable component

34 denotes edge of the Sets or T square

35 denotes perpendicular component

37 denotes markings

39 denotes protractor

40 denotes a void.

Figure 3b of sheet 2 shows a left side view of an embodiment of the improved

Sets or T square.

Where,

33 denotes slot

36 denotes holding component

37 denotes markings

38 denotes surface.

Figure 4a of sheet 3 shows an elevational front view of the arrangement of the improved ruler and Sets or T square to draft an offset to a straight line at a defined distance.

Where, 10 denotes ruler

20 denotes Sets or T square

44 denotes movable component

45 denotes line

46 denotes suitable marking

47 denotes markings

48 denotes component.

Figure 4b of sheet 3 shows a left side view of the arrangement of the improved ruler and Sets or T square to draft an offset to a straight line at a defined distance. Where,

42 denotes element

43 denotes Slot.

Figure 5 of sheet 4 shows the elevational front view of the component provided on top of the improved Sets or T square traversed, in order to increase the range of the improved Sets or T square to draft a line.

Where,

51 denotes component

52 denotes scale

20 denotes improved Sets or T square.

Figure 6 of sheet 4 shows the elevational front view of the angular indications marked on the improved ruler aligned with the horizontal straight line drafted on the drawing sheet.

Where,

10 denotes ruler

61 denotes line segment

62 denotes point

64 denotes markings

65 denotes edge 66 denotes measuring scale.

In order that the manner in which the above-cited and other advantages and objects of the invention are obtained, a more particular description of the invention briefly described above will be referred, which are illustrated in the appended drawing. Understanding that these drawing depict only typical embodiment of the invention and therefore not to be considered limiting on its scope, the invention will be described with additional specificity and details through the use of the accompanying drawing.

Detailed description:

According to this invention, we have provided improved ruler and improved Sets or T square.

The present invention is comprised of an improved ruler and Sets or T square which enables a draftsperson to accurately and efficiently draft:

1. A parallel line segment of required length to an existing line or line segment at a desired distance.

2. A line segment of required length at any of the provided angles on the improved ruler.

3. A regular polygon of 3, 4, 5, 6, 8, and 12 sides of desired length. Moreover, star polygons can also be constructed similarly.

3. These abilities are invaluable in terms of time and effort to a draftsperson.

4. Marking 3, 4, 5, 6, 8 and 12 number o sectors in circle.

5. Draw hatching lines at 30, 45 and 60 degrees at desired offset.

In accordance with an embodiment of this invention figure 1A and IB illustrates the elevational front view and a left side view of the improved ruler. Improved ruler (10) which is made up of transparent material has a centimetre measuring scale (1) originating from the centre line (3) on either side of it. Centre line (3) is located exactly at the centre of the improved ruler (10) and is perpendicular to both the edges. A similar centimetre scale (12) is marked below (1) having a range of 30cm. Also, an inches scale (9) having range 12 inches is marked. Figure 1A also shows angular indication (5) at an angle of 18 degree with respect to the centre line (3). Similarly, indications (6), (7), and (8) are marked at 30, 45, and 60 degrees respectively. These indications appear on both the sides of the centre line.

Figure IB shows the left side view of the improved ruler (10). A slot (15) in provided in the ruler (10) so as to provide a pathway for the improved Sets or T square to traverse axially without dislocation. The slot should be designed such that the improved Sets or T square can be easily engaged and disengaged, and should only traverse along the direction of the improved ruler (10).

In accordance with another embodiment of the present invention Figure 2A illustrates an improved ruler where there are two scales (18), (19) on either side of the edges of the ruler (20). These measuring scales are in the ratio of 2: 1 and 2^A(1/2): 1 respectively. Other aspects are similar to that of the ruler (10) in figure 1A.

Figure 2B shows the left side view of the ruler (20). There are two slots (21) and (22) adjacent to the scales (18) and (19) respectively. These slots provide a pathway for the 30-60-90 and 45-45-90 improved Sets or T squares respectively.

Figure 3A and 3B illustrates the elevational front view, and left side view of the holding component (36) of the improved 45-45-90 Sets or T square. The improved Sets or T square consist of a movable component (32) which can traverse along the edge of the Sets or T square (34). The component (31) has a centimetre scale (32) indicated on it. Another component (35) which is mutually perpendicular to (34) is elevated and contains (33) which is extended from surface (38). The surface (38) consists of markings (37) at a regular interval from each other. The surface (38) is also coated with an opaque material such that only the markings (37) are visible, and the view below is blocked. This embodiment also contains a protractor (39) with angles ranging from 0 to 180 degrees (not shown), and a void (40) to mark the preferred angle on the drawing board. An improved 30-60-90 Sets or T square can be constructed in a similar fashion.

Best method of performance of the invention:

Figure 4A and 4B show the engagement of the improved ruler and the improved SETS OR T square. This configuration is used to draft a parallel line of required length at a desired distance from the initial position. The ruler (10) and Sets or T square (20) are connected to each other by the element (42) on the Sets or T square and the slot (43) provided on the ruler (10). This configuration only allows the relative axial motion to take place, and removes any other movement caused while drafting the required line segment. To draft the required line segment following steps are taken:

1. Initially the above-mentioned configuration is positioned such that the edge of the movable component (44) on the improved Sets or T square is aligned to the line (45) to which we have to draft a parallel line segment.

2. At this initial position of the Sets or T square, keep the position of the Sets or T square fixed and align the markings (47) on the improved ruler with any of the suitable marking (46) on the Sets or T square.

3. Now keeping the ruler stationary, move the Sets or T square (20) such that the noted marking on the Sets or T square moves the desired distance at which we want our parallel line segment to be from the initial position.

4. Thus, the edge of the movable component (44) is at the desired distance from the initial position. Hence we can draft a line segment of required length with the help of the scale provided on the component (48).

5. Figure 5 illustrates that the ability of the movable component (51) provided on the improved Sets or T square (20) enables us to draft a line segment at a position which is not directly above or below the initial position. Moreover, we can draft a line segment of length greater than the length of scale (52) provided on the component (51) by just moving the component (51) and not the entire Sets or T square (20), thus eliminating any error in drafting a long line segment, and simultaneously saving time in drafting the required line segment.

The process of drafting the desired parallel line segment can be carried out using the embodiment shown in figure 2A and 2B. Here the construction shown in figure 3B is constructed along the longest edge of the improved Sets or T squares. The improved 30-60-90 Sets or T square is attached to the slot adjacent to the 2: 1 scale. Similarly, the improved 45-45-90 Sets or T square is attached to the slot adjacent to the 2^A(1/2): 1 scale and the same steps are followed as mentioned above to draft the parallel line segment.

Figure 6 shows the elevational front view of the improved ruler (10) and illustrates the ability of the improved ruler (10) to draft a line segment of required length at a desired angle with respect to another line or line segment. Moreover, this ability also allows the draftsman to draft a regular polygon/star polygon. The above-mentioned operation can be achieved by following these steps:

1. Position the improved ruler (10) with respect to the line segment (61) in such a way that the point (62) on the improved ruler is coincident with the end point of the line segment (61).

2. Now align the marking (64) provided on the improved ruler, such that it is superimposed on the line segment (61).

3. Thus, the edge (65) of the improved ruler is inclined with respect to the line segment (61) at an angle displayed by the marking (64) on the improved ruler (10). The marking (64) also shows the interior and exterior angle made by the edge (65) of the improved ruler (10). 4. Now draft a line segment of required length which is inclined at the desired angle. The measuring scale (66) provided on the improved ruler (10) assists the draftsman to draft a line segment of required length. Similarly, we can draft line segments of required length at other desired angles.

5. To draft a regular polygon, repeat the above process keeping the angle and the length of the drafted line segment same, and just changing the position of the point (62) from the end point of initial line segment (61) to the end point of the newly drafted segment. The end point of the final line segment will meet the starting point of the initial line segment (61), thus completing the loop and forming a regular polygon.

It is to be understood that the process of present invention is susceptible to modifications, changes and adaptations are intended to be with the scope of the present invention.

Inventive step of the invention:

Following are the inventive steps of the present invention:

1. The provision of slot on the improved ruler guides the improved Sets or T square to slide along axis of the improved ruler, whereas markings of the centimetre scale on the improved ruler indicates the draftsperson about the distance at which the line segment is to be drafted. This ability enables the draftsperson to traverse at desired distance and draft the desired line segment rapidly with greater accuracy.

2. The sliding mechanism provided on the improved Sets or T square increases range of the magnitude of the offset to be drawn. This ability allows the draftsperson to draft the line segment of magnitude greater than the length of the sliding component of the improved Sets or T square without moving the entire improved Sets or T square, thus maintain a straight line and saving time. 3. The markings of conventional angles along with the centimeter scale originating from the center of the edge allows the draftsperson to draft a line segment of required length at conventional angles in least number of steps thus saving time and effort. Further more, regular polygons and star polygons with sides of desired magnitude, sectors in a circle and hatching an area.

Industrial application:

This invention has its application for draftsman, engineering students, technical schools/colleges, architectures, carpentry art work

Additional advantages and modification will readily occur to those skilled in art. Therefore, the invention in its broader aspect is not limited to specific details and representative embodiments shown and described herein. Accordingly various modifications may be made without departing from the spirit or scope of the general invention concept as defined by the appended claims and their equivalents.

Claims

We claim: -

1. Multifunctional drawing apparatus for drafting of fundamental geometric elements such as parallel and perpendicular lines, conventional angles, and frequently used regular polygons, of desired magnitude using an improved embodiment of the ruler (10) and Sets or T squares (20) on the drawing board connected to each other by the element (42) on the SETS OR T square and the slot (43) provided on the ruler (10).

2. The Sets or T square as claimed in claim 1 consists of a movable component (32) which can traverse along the edge of the Sets or T square

(34) having a centimetre scale (32) indicated on it; another component

(35) which is mutually perpendicular to (34) is elevated and contains (33) which is extended from surface (38) which consists of markings (37) at a regular interval from each other and coated with an opaque material such that only the markings (37) are visible, and the view below is blocked; a protractor (39) with angles ranging from 0 to 180 degrees and a void (40) to mark the preferred angle on the drawing board.

3. The ruler (10) as claimed in claim 1 is made up of transparent material having a centimetre measuring scale (1) originating from the centre line (3) on either side of it wherein the Centre line (3) is located exactly at the centre of the improved ruler (10) and is perpendicular to both the edges and A similar centimetre scale (12) is marked below (1) having a range of 30cm along with an inches scale (9) having range 12 inches is marked.

4. Centre line of the ruler as claimed in claim 3 consists of angular indication at different angles say 18, 30, 45, 60 degree respectively with respect to the centre line (3) and appearing on both the sides of the centre line.

5. A slot (15) as claimed in claim 1 is provided in the ruler (10) so as to provide a pathway for the SETS OR T square to traverse axially without dislocation and designed such that the improved SETS OR T square can be easily engaged and disengaged, and only traverse along the direction of the ruler (10).

6. Two slots (21) and (22) adjacent to the scales (18) and (19) respectively as claimed in claim 1 provide a pathway for the 30-60-90 and 45-45-90 improved SETS OR T squares respectively.

7. Movable component (32) of the SETS OR T square as claimed in claim 1 traverse along the edge of the SETS OR T square (34) having a centimetre scale indicated on it with sliding mechanism on top edge of the improved SETS OR T square to increase the range of magnitude of the offset to be drawn.

8. Accordingly as claimed in claim 1 wherein indication are marked at desired angles on the improved ruler to:

a) draft line segments of desired length at conventional angles with respect to the base line;

b) draft regular polygons with sides of desired length.