EP0161808A1 - Drawing board - Google Patents

Drawing board Download PDF

Info

Publication number
EP0161808A1
EP0161808A1 EP85302594A EP85302594A EP0161808A1 EP 0161808 A1 EP0161808 A1 EP 0161808A1 EP 85302594 A EP85302594 A EP 85302594A EP 85302594 A EP85302594 A EP 85302594A EP 0161808 A1 EP0161808 A1 EP 0161808A1
Authority
EP
European Patent Office
Prior art keywords
board
drawing surface
arcuate
guide means
instrument
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP85302594A
Other languages
German (de)
English (en)
French (fr)
Inventor
David Bruce Williams
Stephen Clark Bishop
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PERSPECTIVE AIDED DESIGN INTERNATIONAL CORP
Original Assignee
PERSPECTIVE AIDED DESIGN INTERNATIONAL CORP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PERSPECTIVE AIDED DESIGN INTERNATIONAL CORP filed Critical PERSPECTIVE AIDED DESIGN INTERNATIONAL CORP
Publication of EP0161808A1 publication Critical patent/EP0161808A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L5/00—Drawing boards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
    • B43L13/14—Devices for drawing in perspective
    • B43L13/141—Two-dimensional devices
    • B43L13/142—T-squares

Definitions

  • the present invention relates to a drafting system and in particular to a system comprising a drawing board and drafting implements to use with said board to produce perspective drawings.
  • drawing boards have previously been suggested which facilitate the production of perspective drawings, these being particularly useful for architects, draftsmen and the like.
  • drawing boards are of value to schools and learning institutions where students are taught to prepare drawings including perspective views.
  • U.S. Patent No. 4,380,124 discloses a drawing board specially adapted for the preparation of perspective drawings, but which suffers from a number of disadvantages. In particular, it does not provide for the preparation of perspective drawings in which the vanishing points are located above and/or below a substantially horizontal line of the drawing surface. Thus, one is not aided with such a board in preparing drawings having height and/or depth perspectives.
  • Danish Patent No. 74469 also discloses a drawing board on which perspective drawings may be formed, but again does not disclose any arrangement providing vanishing points above and/or below a substantially horizontal center line of the drawing surface.
  • a drawing system including a drawing board having guide means and a drawing instrument or instruments adapted for cooperation with said guide means for the production of perspective drawings.
  • the present drawing board includes guide means at one or both sides of a drawing surface for defining in conjunction with a drawing instrument a vanishing point or points along a substantially horizontal center line of the drawing surface, and in addition, includes guide means above and/or below said drawing surface defining in conjunction with a drawing instrument a vanishing point or points above and/or below a substantially horizontal center line of the drawing surface.
  • At least two substantially arcuate guides are provided at one side of the drawing surface, and are formed or provided in a replaceable board portion which is capable of demountable attachment to the drawing board at one side of the drawing surface.
  • the portion is replaceable, it can be removed and replaced with a portion carrying arcuate guides of a different dimension or configuration, depending upon the desires of a user.
  • a further aim of the invention is to provide a drawing board having guide means for the preparation of perspective drawings, which guide means are disposed on a removeable portion of the board to permit replacement thereof with a portion having different guide means.
  • Another aim of the invention is to provide a drafting system as described of a relatively simple construction which can be efficiently employed in the production of perspective drawings.
  • the present drafting system comprises a drawing board and one or more drawing instruments which are specially constructed for use with said board to aid in the production of perspective drawings.
  • the drawing board includes guide means which preferably comprise arcuate grooves in the board surface, and the instruments include complementary means such as a pair of spaced downwardly extending studs for engagement with the arcuate grooves of the board.
  • a drawing board 12 in accordance with the present invention comprises a rectangular board of rigid material having planar face surfaces.
  • the board edges are substantially straight edges, permitting use of the board in a conventional manner with a T-square applied along any preferred edge.
  • the board may be made of any appropriate material, such as for example, plastics, fiberboard, wood and the like.
  • the board includes on one face thereof a drawing surface 20 which is centrally disposed thereon and of a sufficient size to accommodate drawing views to be produced.
  • the drawing surface is preferably of a rectangular shape as illustrated, having the same general rectangular proportions as the board.
  • the board as is the case with most drawing boards, is intended to be used with one of its longer edges adjacent the user and parallel to the horizon of the view being drawn.
  • a horizontal center line 25 of the drawing surface 20 extends substantially parallel to the longer edges of the board.
  • the drawing surface 20 may be bounded on one or more sides by appropriate scales 15 as illustrated in Fig. 6.
  • the board includes a plurality of guide means in the form of grooves in the board face adjacent the drawing surface, the guide means being adapted to receive complementary guide elements of the drawing instruments. Since the guide means do not protrude above the surface of the board, none of the guide means interferes with the free movement of the special instruments in cooperation with other guide means, nor does the plurality of guide means prevent the usual sliding movement of conventional T-squares, triangles, scales and the like across the face of the board containing the drawing surface.
  • guide means 2(L) and 2(R) which guide means are formed as arcuate grooves or depressions in the surface of the board.
  • the grooves may be molded or cut in the board, depending on the manner and material used in forming the board.
  • the grooves 2(L) and 2(R) are of opposite curvature and, in the illustrated embodiment, are located so as to be substantially convex relative to each other.
  • the groove 2(L) as shown in Fig. 9 is an arc of a circle centered at point VP(2L) which, as will be described hereinafter, comprises a horizontal vanishing point for the formation of a perspective drawing.
  • the point VP(2L) in the embodiment illustrated, lies on the projected horizontal center line to the left of the drawing surface 20.
  • the groove 2(R) comprises an arc of a circle having its center at point VP(2R), also on the projected center line 25, and defining a horizontal vanishing point at the right hand side of the board for perspective views as later described.
  • the guide means comprising the grooves 2(L) and 2(R) are intended for use as a pair and it will be noted that the vanishing points VP(2L) and VP(2R) are substantially equally spaced from a vertical center line 50 passing centrally through the drawing surface, although different vanishing points could be chosen.
  • a second set of arcuate guide means 4(L) and 4(R) of opposite curvature are provided in convex facing relation on opposite sides of the drawing surface 20.
  • the guide 4(L) comprises an arcuate groove disposed between the spaced grooves 2(L) and 2(R) and comprises an arcuate groove centered at point C.(4L) on the center line 25 to the left of the board.
  • guide means 4(R) comprises an arcuate groove centered at point C.(4R) on the center line 25 to the right of the board.
  • the guide means 4(L) and 4(R) are intended for use as a pair in the production of isometric -type views.
  • a third guide means is provided on the board in the form of an arcuate groove 1 having a center at point VP(l) on the center line 25, which point is on the drawing surface 20 slightly to the right of its center.
  • the groove 1 which subtends an arc of approximately 270°, extends circumferentially around a substantial portion of the drawing surface and is used in the production of single vanishing point perspective drawings as described hereinafter.
  • a fourth guide means which may be disposed above and/or below the drawing surface 20 comprises in the preferred embodiment arcuate grooves 3(T) and 3(B) which are respectively located above and below the drawing surface.
  • the groove 3(T) is an arc of a circle centered at point V.P.(3T) on the projection of the vertical center line 50 below the board.
  • the groove 3(B) is an arc of a circle centered at point V.P.(3B) on the projection of vertical center line 50 above the board.
  • the guide means 3(T) and 3(B) are used in conjunction with the guide means 2(L) and 2(R) to produce three point perspectives and function to permit height and depth perspectives.
  • the arcuate grooves 3(T) and 3(B), which are oppositely curved relative to each other, are disposed on opposite sides of the drawing surface 20. If desired, however, only an upper guide means 3(T) or a lower arcuate means 3(B) could be provided. For example, if only a lower arcuate guide was provided, then only a third vanishing point height perspective would be obtainable, whereas, if only an upper arcuate guide means 3(T) was provided, then only a third vanishing point depth perspective could be obtained.
  • a T-square 30 is shown which is similar in construction to conventional T-squares except that the cross member 32 thereof is flush with the longitudinal member 31 and a pair of spaced studs 35 are provided projecting from the underside of the cross member 32.
  • the studs 35 are equally spaced on either side of the projection of the drawing edge 31a of the longitudinal member 31 and are configured so as to snugly but slidably fit in any of the grooves of the above-described guide means.
  • one of the studs 35 of T-square 30 is shown disposed in the groove 4(L) of drawing board 12 for sliding movement therein.
  • the stud 35 comprises a lower male portion 35a having a frusto-conical downwardly directed face 35b cooperatively engaging the bevelled groove walls.
  • a cylindrical stem portion 35c of the male stud portion passes through a bore in the T-square 30 and is held captive therein by a female stud portion 35d, being press fitted within a bore 35e thereof.
  • the drawing implement 40 shown in Fig. 8 is intended for use in the production of isometric type views and comprises a large 30°-60° triangle having a straight drawing edge 41 along the hypotenuse thereof and a pair of spaced studs 42 extending downwardly from the short leg thereof in spaced relation.
  • the studs 42 are identical in shape to the studs 35 of the T-square 30 and thus permit the implement 40 to also be slidably moved in the grooves of the guide means.
  • the T-square 30 is placed with its studs 35 in the groove 1 as shown in Fig. 1.
  • the edge 3la of the T-square will accordingly pass through the vanishing point V P (l) for any position of the T-square in the groove 1.
  • the vanishing point thus need not be constructed and any lines to be drawn toward the vanishing point from points on the picture plane are simply drawn along the T-square edge 3la.
  • a conventional T-square 36 and a conventional triangle 50 may be employed in a conventional manner to complete the drawing view.
  • Fig. 2 The use of the board to produce two point perspective drawings is shown in Fig. 2.
  • the special T-square 30 is disposed with its studs engaged in grooves 2(L) or 2(R) to respectively enable the drawing of lines directed at vanishing points VP(2L) or VP(2R).
  • Fig. 2 a pair of T-squares 30 are shown to illustrate different operating positions, but in practice only a single T-square is needed since it can be readily lifted from one groove to another.
  • a conventional T - square 36 is shown engaged with the upper edge of the board to produce vertical lines on the drawing view.
  • a primary object of the invention is to provide a system enabling the production of three point perspective drawing views.
  • the guide means 3(T) and 3(B) are provided, which guide means are used in conjunction with the two point perspective guide means 2(L) and 2(R).
  • Fig. 3 illustrates the use of the board to create a three point perspective view wherein a height perspective is added to the two horizontal perspectives.
  • the T-square 30 is shown in three separate positions in three different grooves.
  • a first position of the T-square 30 is shown wherein the studs thereof are engaged in the groove 2(L), thereby permitting the T-square edge 31a to produce lines directed toward the vanishing point VP(2L) at the lert side of the board.
  • the T-square is shown in use in conjunction with groove 2(R), whereby the edge 31a thereof will produce lines directed toward the vanishing point VP(2R) at the right hand side of the board.
  • the T-square 30 is engaged with the groove 3(B) as shown in Fig. 3 and the edge 31a thereof will then be directed toward vanishing point VP(3B) located above the board. It may thus be seen that the three vanishing points utilized permit the formation of a drawing having a height perspective in addition to the two conventional horizontal perspectives.
  • Fig. 4 a three point perspective view similar to that of Fig. 3 is shown in the process of production, the difference being that a depth perspective rather than a height perspective is utilized.
  • the guide means 3(T) is used in conjunction with the T-square 30, as well as the guide means 2(L) and 2(R). With this arrangement, the vanishing points VP(2L), VP(2R) and VP(3T) are employed to produce a three point perspective drawing having a depth perspective.
  • a formula has been devised for choosing the location of the height or depth perspective vanishing point, which formula may be used to choose the center of curvature of grooves 3(T) and 3(B).
  • the schematic layout of Fig. 11 illustrates how this formula is employed.
  • the points and distances of the layout of Fig. 11 are as follows:
  • the present drawing system is also useful in forming isometric type drawings utilizing the drawing instrument 40 which is engaged with the arcuate guide means 4(L) or 4(R) at either side of the drawing surface 20.
  • the use of the instrument 40 in the guides results in the alignment of the drawing edge 41 thereof selectively with either the vanishing point VP(4L) or VP(4R).
  • Such an arrangement is conventional and is illustrated, for example, in U.S. Patent 4,380,l24.
  • a modified drawing board 70 includes a board portion 60 at one side of the drawing surface 20 which is capable of being clipped into and out of position, or alternatively which is capable of being slid into and out of position.
  • the replaceable portion 60 is preferably formed with at least two arcuate guide means 2(L) and 2(R) of a desired length, configuration and curvature, depending upon the desires of a user and depending upon the vanishing points required relative to the drawing surface 20.
  • the replaceable portion 60 is received within a recess 65 of the board and can be secured in position on the board by lugs at each side of the portion 60 which can engage with receiving slots at each side of the recess 65.
  • the replaceable portion 60 of the drawing board, locating the arcuate guide means 2(L), 2(R) can be replaceably clipped into position.
  • the portion 60 can be removed and replaced.
  • the drawing board 70 can have associated with it, a number of portions 60, having arcuate guide means of differing configurations, dimensions or curvature.
  • the recess 65 can be provided with grooves and the replaceable portion 60 can be provided with elongate runners or tongues down each side. These can then engage within the grooves in the sides of the recess 65 to allow for the portion 60 of the board to be slidably engaged within the recess and removably and releasably located within the board.
  • a drawing board could be associated with a number of slide replacements, each having arcuate guide means of differing configurations and curvature, So that the arcuate guide means 2(L), 2(R) can be replaced in a straightforward and efficient manner, when desired by a user.
  • a guide-carrying replaceable portion of the board is a particularly advantageous feature of one form of the present invention, in that a user is not forced to continue to use one set of arcuate guide means of predetermined length, configuration or curvature.
  • the arcuate guide means used basically to define vanishing points can thus be replaced and varied as may be required.
EP85302594A 1984-04-13 1985-04-12 Drawing board Withdrawn EP0161808A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ207848 1984-04-13
NZ207848A NZ207848A (en) 1984-04-13 1984-04-13 Drawing board for drawing perspective

Publications (1)

Publication Number Publication Date
EP0161808A1 true EP0161808A1 (en) 1985-11-21

Family

ID=19920746

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85302594A Withdrawn EP0161808A1 (en) 1984-04-13 1985-04-12 Drawing board

Country Status (7)

Country Link
EP (1) EP0161808A1 (da)
JP (1) JPS60236799A (da)
KR (1) KR850007943A (da)
AU (1) AU4108685A (da)
DK (1) DK166885A (da)
NZ (1) NZ207848A (da)
ZA (1) ZA852747B (da)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2340742A (en) * 1998-08-26 2000-03-01 Philip John Merryman Working surface with interchangeable parts
JP2017039308A (ja) * 2015-08-22 2017-02-23 孝典 枝窪 帆型勾配儀（漫画等イラストレーションで紙面外に消失点のあるパースラインを簡便かつ大量に引くための器具）

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE76241C (de) * A.HOHENSINNER in Wien III, Hafengasse 24 Fluchfpunktlineal
US1969758A (en) * 1932-06-21 1934-08-14 William R Mccoy Device for making perspective drawings
US2475021A (en) * 1946-01-19 1949-07-05 John P Gibbons T-square holding clip
DE1087359B (de) * 1959-07-07 1960-08-18 Leuna Werke Iawalter Ulbrichti Zeichenmaschine fuer perspektivische Darstellungen mit zwei Fluchtpunkten
US4380124A (en) * 1980-01-22 1983-04-19 Colin Ward Rogers Drawing board
GB2132562A (en) * 1982-09-04 1984-07-11 Humphrey Vincent Needle Perspective drawing board
GB2143779A (en) * 1983-07-25 1985-02-20 Lambda Integral Design Limited Improvements in drawing boards

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE76241C (de) * A.HOHENSINNER in Wien III, Hafengasse 24 Fluchfpunktlineal
US1969758A (en) * 1932-06-21 1934-08-14 William R Mccoy Device for making perspective drawings
US2475021A (en) * 1946-01-19 1949-07-05 John P Gibbons T-square holding clip
DE1087359B (de) * 1959-07-07 1960-08-18 Leuna Werke Iawalter Ulbrichti Zeichenmaschine fuer perspektivische Darstellungen mit zwei Fluchtpunkten
US4380124A (en) * 1980-01-22 1983-04-19 Colin Ward Rogers Drawing board
GB2132562A (en) * 1982-09-04 1984-07-11 Humphrey Vincent Needle Perspective drawing board
GB2143779A (en) * 1983-07-25 1985-02-20 Lambda Integral Design Limited Improvements in drawing boards

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2340742A (en) * 1998-08-26 2000-03-01 Philip John Merryman Working surface with interchangeable parts
GB2340742B (en) * 1998-08-26 2002-02-13 Philip John Merryman Study easel
JP2017039308A (ja) * 2015-08-22 2017-02-23 孝典 枝窪 帆型勾配儀（漫画等イラストレーションで紙面外に消失点のあるパースラインを簡便かつ大量に引くための器具）

Also Published As

Publication number Publication date
DK166885A (da) 1985-10-14
ZA852747B (en) 1985-12-24
DK166885D0 (da) 1985-04-12
AU4108685A (en) 1985-10-17
JPS60236799A (ja) 1985-11-25
NZ207848A (en) 1987-01-23
KR850007943A (ko) 1985-12-11

Similar Documents

Publication Publication Date Title
DE69402946T2 (de) Gerät zum Messen und Zeichen
US2702944A (en) Adjustable drafting template
US5271305A (en) Base and clamping bar assembly
US4734993A (en) Straightedge
US3827152A (en) Means for attaching pencils to templates
EP0161808A1 (en) Drawing board
US4641436A (en) Ruler
US4246702A (en) Apparatus for use in drawing designs
US3140548A (en) Printing ruler
US4380124A (en) Drawing board
US5425295A (en) Sheet material cutter having pivotable head
US3665612A (en) Continuous template flow charting apparatus and method
US2676410A (en) Ruling and lettering guide
US3978587A (en) Drafting system and apparatus
US2686971A (en) Adjustable letiering scriber
US4008522A (en) Chalkboard line tool
US2368344A (en) Draftsman's triangle
EP0241173A1 (en) Drawing instruments
US2524990A (en) Perspective drawing machine
US3118233A (en) Line-dividing drafting instrument
GB2143779A (en) Improvements in drawing boards
US2762125A (en) Geometric developing instrument
US3293758A (en) Drafting device
JPH04109193U (ja) 平行定規
EP0190339A1 (de) Zeichengerät

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19860510

17Q First examination report despatched

Effective date: 19870803

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19871030

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WILLIAMS, DAVID BRUCE

Inventor name: BISHOP, STEPHEN CLARK