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
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D19/00—Movable-strip writing or reading apparatus

Definitions

• This invention relates to an improved drafting apparatus suitable for commercial or amateur draftsmen.
• Hitherto conventional drafting apparatus have comprised a fixed substrate on which was supported a sheet of paper or other material on which a drawing was to be done by a draftsman seated before the fixed substrate.
• the fixed substrate comprised a board or easel supported by an appropriate support frame. If desired the board could be tilted relative to the support frame and thus it could be pivoted from an orientation approximating a horizontal plane to an orientation approximating a vertical plane.
• the drafting apparatus of the invention includes a substrate or working surface, support means for supporting said substrate which is movable relative thereto, and
• OMPI actuating means for actuating movement of said substrate
• the movable substrate may comprise a flexible sheet which may be supported by rollers at the top and bottom thereof *
• One roller may comprise an idler roller and the other an actuating roller which may be moved manually, mechanically or driven by appropriate drive means.
• the movable substrate is in the form of a continuous tensioned belt and is supported on an appropriate support base.
• the belt and 0 support base may be located in a horizontal plane and if desired the belt and support base may be tilted if required.
• the belt may be moved relative to the support base manually by rotation of a support roller located at one end of the base. This movement may be achieved manually such as by the 5 support roller having an actuating handle. Alternatively a mechanical actuating means may be provided.
• a drive means such as an electric motor having an output shaft directly attached to an axle of the support roller.
• the drive means includes a pair of rotatable support rollers located at one end of the support base. Each roller may have interposed therebetween an electric motor which is directly connected to each support roller. 5
• FIG 1 is a perspective view of drafting apparatus constructed in accordance with the invention.
• FIG 2 is a schematic view showing the drive means Q for driving the actuating rollers in the apparatus shown in FIG 1;
• FIG 3 is a perspective view of a modified form of drafting apparatus which is different to that shown in FIG 1.
• the drafting apparatus 10 includes a movable substr- 5 ate in the from of a continuous tensioned belt 11 having a drawing sheet 12 attached thereto as shown.
• the belt 11 is supported on a fixed base 13 which may be in the form of a rigid panel, board or frame.
• base 13 is rectangular in shape.
• Belt 11 may be supported by a pair of actuating rollers 14 at one end of the base 13.
• Each roller may be directly attached by shafts 12a to an electric motor 15 shown in FIG 2.
• Shafts 12a may be directly connected to the axles of rollers 14 in any suitable manner.
• Each roller is provided with a plurality of teeth 16 which engage in geared or meshed relationship with a plural ⁇ ity of slots 17 located on belt 11 at each side thereof of complementary shape to teeth 16. This provides a positive means of actuating movement of belt 11 relative to base 13.
• side panels 18 for attachment to base 13 and curved end members 19 for attachment or location adjacent to the front and rear of base 13.
• chair 20 on which the draftsman may sit and treadle or foot pedal 21 electrically connected to electric motor 15 by cord 21a.
• Treadle 21 may comprise an operating switch for motor 15.
• an actuator button (not shown) may be provided mounted on end panel 19 instead of treadle 21.
• FIG 3 another variation is shown wherein belt Ua is translucent or transparent and there is provided a window 22 on the top surface of base 13.
• Base 13 in this embodiment may be hollow and include a light source (not shown) which may illuminate window 22 when required.
• a draftsman may sit on chair 20 and by operation of treadle 21 may through the action of rollers 14, teeth 16 and slots 17, effect movement of the belt 11 or 11a as described above toward and/or away from him as required. This enables him to draw on sheet 12 with minimum discomfort as he may then draw on the nearest part of sheet 12 without stretching or leaning.
• the draftsman may draw directly on belt 11 which in this embodiment is of a s-uitable material to facilitate removal of the drawing if required.
• the belt 11 may have a shiny or laminated surface whereby the drawing may be removed by a cloth in a rubbing motion on belt 11.
• the draftsman may operate directly on belt 11a especially when the drawing area is illuminated by a light source shining through window 22.
• tensioning means may be used to tension belts 11 and 11a when required.

Applications Claiming Priority (2)

Publications (1)

Family

ID=3700470

Family Applications (1)

Country Status (2)

Family Cites Families (13)

• 1982
  • 1982-07-08 WO PCT/AU1982/000107 patent/WO1983000123A1/en unknown
  • 1982-07-08 EP EP19820902048 patent/EP0083604A1/de not_active Withdrawn

Non-Patent Citations (1)

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