U.S. patent application number 10/764643 was filed with the patent office on 2005-09-22 for right perspective drawing tool.
Invention is credited to Rosetti, Elizabeth.
Application Number | 20050204575 10/764643 |
Document ID | / |
Family ID | 34984609 |
Filed Date | 2005-09-22 |
United States Patent
Application |
20050204575 |
Kind Code |
A1 |
Rosetti, Elizabeth |
September 22, 2005 |
RIGHT PERSPECTIVE DRAWING TOOL
Abstract
The Right Perspective Drawing Tool invention consist of a
typical tape measure with a housing enclosing a retractable coiled
tape, tape tip, and locking mechanism with a suction cup attached
to the bottom of the unit. The domed-top of the suction cup is
inside the housing and the neck fits a hole in the bottom of the
housing allowing the unit to swivel 360 degrees and suction onto a
flat surface. This unit will allow students or professionals to
draw the illusion of a building having a three-dimensional,
realistic contour. What is new in the art to which this invention
pertains is that the user can position the unit on a single point
and draw all lines pivoting off the same point, like rows of bricks
or siding, by simply sliding the tape up or down.
Inventors: |
Rosetti, Elizabeth; (Biloxi,
MS) |
Correspondence
Address: |
Elizabeth Rosetti
5206 Whetstone Road
Biloxi
MS
39532
US
|
Family ID: |
34984609 |
Appl. No.: |
10/764643 |
Filed: |
January 27, 2004 |
Current U.S.
Class: |
33/760 |
Current CPC
Class: |
B43L 13/14 20130101;
B43L 13/16 20130101; G01B 3/1046 20200101; G01B 3/1041 20130101;
G01B 3/1071 20130101; G01B 2003/1074 20130101 |
Class at
Publication: |
033/760 |
International
Class: |
G01B 003/10 |
Claims
What I claim as my invention is:
1. (canceled)
2. The Right Perspective Drawing Tool consisting of; a. a typical
tape measure with a housing with two side walls, a top and bottom
wall, a front and back wall, a coiled measuring tape enclosed in
the housing, a tip on the end of the tape to keep it from retracing
all the way into the housing; b. and with a round hole cut into the
bottom wall of the tape measure housing at center, large enough to
accommodate the neck of a suction cup, but smaller than the
domed-top of the suction cup; c. and with a locking mechanism
switch on the front wall of the tape measure housing that will
allow the tape to be extended to the desired length and locked in
position to keep it from retracting into the housing of the tape
measure; d. and a suction cup with a typical concave base, a neck,
and a domed-top; e. with said neck the size to fit in the hole in
the bottom of the tape measure housing and allow the tape measure
housing to pivot freely 360 degrees; f. and with larger domed-top
that will fit inside the housing of the tape measure to secure the
suction cup to the housing; g. so that the tape measure with added
suction cup unit can be positioned on a single point (vanishing
point for perspective drawing purposes) and swivel off that point
for 360 degrees with the tape extended and locked in place to any
length; h. thus allowing the tape to act as a straightedge for
drawing one or many straight lines that radiate off a single point
by sliding the tape up or down while the suction cup holds the unit
in place; i. thus allowing an illustrator, architect, or artist to
render a perfect perspective drawing of a house or building with
accuracy and ease.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] Not Applicable
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
[0002] Not applicable
REFERENCE TO SEQUENCE LISTING, A TABLE, OR A COMPUTER PROGRAM
LISTING COMPACT DISK APPENDIX
[0003] Not Applicable
BACKGROUND OF THE INVENTION
[0004] The field of endeavor to which this invention pertains as
paraphrased by the applicable U.S. patent Classification
definitions or the subject matter of the claimed invention is under
Class 33, Geometrical Instruments and 18.3, Perspective Drawing
Tools identified under subclass 18.1.
[0005] The Right Perspective Drawing Tool, consisting of a typical
tape measure with a suction cup added to the bottom of the housing,
was invented to help any student or professional involved with
representational drawing and perspective view drawing. This
includes a wide variety of fields such as Illustration, Interior
Design, Architecture, and Fine Arts. Each of these areas applies
perspective techniques for different purposes and to varying
degrees of thoroughness. Presently an artist who understands basic
perspective fundamentals and principles, is faced with the old
method of lining up a very long ruler on a single point, the
vanishing point, drawing one line, and then realigning the ruler to
draw the next line. The Right Perspective Drawing Tool enables the
artist to render very detailed drawings quickly and accurately. The
unit is anchored to a single point, the established vanishing
point, marked by two perpendicular lines drawn on the table top, by
the suction cup with cross hairs. The tape is extended to the
length needed to reach the drawing area of the object to be
rendered and locked in place. The tape is held down with one hand
while the user draws a straight line along its edge. Thus the tape
acts as a straight edge not a measuring device. Because of its
unique pivotal design, the user can slide the tape up or down and
draw additional straight lines that all pivot off a single axis or
point established as the vanishing point.
BRIEF SUMMARY OF THE INVENTION
[0006] The aim of perspective drawing for an artist or draftsman is
to create an accurate rendition of a subject with a sense of space
and depth, a three-dimensional look, on a flat drawing surface.
Artists make use of vanishing points on a horizon line to determine
the correct slant of all horizontal lines on the side of a building
that converge toward the same vanishing point.
[0007] The Right Perspective Drawing Tool uses a modified tape
measure with a suction cup inserted in the bottom wall of the tape
measure housing to form a single unit. There is a round hole in the
bottom wall of the tape measure housing at center. The domed-top of
the suction cup is held within the tape measure housing and the
neck of the suction cup fits a round hole made to accommodate its
size and allow movement but the hole is smaller than the domed-top.
The user can press down on the unit to suction it on a flat drawing
service like a tabletop and it will swivel at the neck area of the
suction cup 360 degrees. This will enable the user to position the
tool on an established vanishing point by engaging the pivotal
suction cup and, with the tape extended and locked, use the edge of
the tape like a straight edge to draw a line. The user can then
draw all horizontal lines on the side of a building that converge
on the established vanishing point quickly and accurately by
slightly moving the tape, up or down, pivoting off the suction
cup.
[0008] Previous methods made use of a long ruler or straightedge
that the user had to position with one end on the vanishing point,
then line the ruler up with the line to be drawn on the object to
be rendered. The user would then draw the line with the possibility
of the straightedge moving off the vanishing point because there
was nothing to secure it or keep it from moving while the user drew
the line at the far end of the straightedge.
[0009] The object of the invention is to give the user the
opportunity to anchor the unit to a stationary point on a flat
surface and not worry about it moving. This allows the user to
concentrate on drawing a line accurately and then pivoting the tape
slightly off the same point to draw the next line in the
design.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING
[0010] FIG. 1 is the drawing of a suction cup.
[0011] FIG. 2 is the drawing of the bottom wall view of a tape
measure housing with a round hole cut in center of the bottom
wall.
[0012] FIG. 3 is a drawing of The Right Perspective Drawing Tool
assembly including a typical measuring tape housing and suction cup
attached to the bottom wall of the housing.
[0013] FIG. 4 is a drawing of a house used as an example of how to
use The Right Perspective Drawing Tool and to describe perspective
drawing terms.
DETAILED DESCRIPTION OF THE INVENTION
[0014] FIG. 1 is a drawing of a typical suction cup 1 with a
domed-top 2 and a neck 3, both of which protrude upward form the
center of the concave base 4.
[0015] FIG. 2 is a drawing of a tape measure housing 5, with a view
of the bottom wall 6 of the tape measure housing 5, and a round
hole 7 in the center of the bottom wall 6 of the tape measure
housing 5.
[0016] FIG. 3 is a drawing of The Right Perspective Drawing Tool 8
assembled with both tape measure housing and suction cup. It shows
a locking mechanism 9 on front wall 10 of tape measure housing 5,
tape tip 11 on end of the steel tape 12, cross hair marking sets 13
on the concave base 4 of suction cup 1 and side wall 14.
[0017] FIG. 4 is a drawing of a house 15 as an example of what a
drawing would look like using The Right Perspective Drawing Tool.
It defines terms used to describe points and lines necessary to
make perspective drawings. The drawing shows a line representing
the horizon line 16, a left vanishing point 17, and a right
vanishing point 18. The drawing also shows a perpendicular line 19
drawn where the horizon line 16 and left vanishing point 17
intersect and the drawing shows where another perpendicular line 19
is drawn where the horizon line 16 and right vanishing point 18
intersect. Line 20 represents the siding or brick lines on the
house drawing 15 and line 21 represents the roofline of the house
drawing 15. A perpendicular line 22 represents the edge of a wall
of the house drawing 15.
[0018] The Right Perspective Drawing Tool is constructed by using a
typical tape measure device that includes a housing 5 with side
walls 14, a top wall, a bottom wall 6, a front wall 10 and a back
wall. The tape measure housing 5 includes a coiled retractable
narrow steel tape 12 inside the housing 5. The tape measure housing
5 also includes a tape tip 11 that is a short metal end flange that
prevents the free end of the steel tape 12 from entering the tape
measure housing 5 when retracted and it provides the user with a
means of conveniently grasping the free end of the steel tape 12.
On the front wall 10 of the housing there is a locking mechanism 9
that allows the steel tape 12 to be extended to the desired length
and locked in position to keep it from retracing into the tape
measure housing 5. A round hole 7 is cut into the bottom wall 6 of
the tape measure housing 5 at center, large enough to accommodate
the neck 3 of the suction cup 1 and smaller than the domed-top 2 of
the suction cup 1 as seen in FIG. 1 and FIG. 2. Inserted into this
round hole 7 and fitting inside the tape measure housing is the
domed-top 2 of the suction cup 1. The tape measure housing 5
swivels 360 degrees at the neck area 3 of the suction cup 1 since
the round hole 7 has been made to accommodate the size of the neck
3 with movement. When the suction cup 1, with cross hairs 13, is
engaged by using a downward pressure on the tape measure housing 5,
it will adhere to a flat surface like a table top and it will
swivel freely in all directions for 360 degrees off a single
stationary point.
[0019] The cross hair sets 13, are perpendicular lines, that are
added to the suction cup base 4 so that the user can position the
concave base 4 directly over a single point accurately. One of the
sets of the cross hairs 13 is lined up with the horizontal line
representing the horizon line 16 of the subject to be rendered. The
other set of cross hair lines 13 is lined up with the line 19 drawn
perpendicular to the horizon line 16 at one of the vanishing points
17 or 18.
[0020] The steel tape 12 can then be extended to the length the
user needs to reach the drawing or subject to be rendered. The
steel tape 12 acts as a straightedge that the user holds down with
one hand while drawing a straight line along the tape edge with the
other hand. Lines can be drawn, for example, to indicate the siding
or bricking on a house 20 and roof lines 21.
[0021] In way of definition, in linear perspective, straight
horizontal lines that are in reality parallel to each other in
nature, seem to meet or converge at a point called a vanishing
point as they move away from the viewer, see FIG. 4. To use The
Right Perspective Drawing Tool, a horizontal horizon line 16 must
be established. As an example, FIG. 4 uses a view of a house with
two sides shown to the viewer. The bottom of the house must lay
somewhere below the horizon line since it sits on a plane that is
closer to the viewer than the horizon line. To use The Right
Perspective Drawing Tool, position the suction base 4 on a selected
vanishing point, for example the right vanishing point 18. Next
line up one set of cross hairs 13 with the horizon line 16 and the
opposite set of cross hairs with the perpendicular line 19 at the
intersection of horizon line 16 at the right vanishing point 18.
Engage the suction cup base 4 by pressing downward on the tape
measure housing 5. Extend the steel tape 12 to reach the section of
the house drawing 15 to be rendered and use the locking mechanism 9
to lock it in place. The steel tape 12 is used like a straightedge
to draw a line then it is moved up or down to draw other lines like
rows of bricks or siding 20 or rooflines 21, all of which pivot off
the same stationary point, vanishing point 17 or 18. One side of
the house is drawn, then The Right Perspective Drawing Tool is
moved to the opposite side of the house. To finish the drawing of
the house 15, the user must remember that in perspective drawing
any line that is perpendicular to the ground in nature 22 will stay
perpendicular in the drawing. Draw all perpendicular lines 22 like
the edge of the sides of the house with a ruler. This should
complete the drawing of the house or building.
[0022] This invention differs from other inventions in that other
inventions have added a removable suction cup that twists or turns
for insertion or other inventions have the suction cup added to a
separate, detachable part that can be added to the tape measure
housing.
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