CA2497822A1 - Drywall ceiling-scriber - Google Patents
Drywall ceiling-scriber Download PDFInfo
- Publication number
- CA2497822A1 CA2497822A1 CA 2497822 CA2497822A CA2497822A1 CA 2497822 A1 CA2497822 A1 CA 2497822A1 CA 2497822 CA2497822 CA 2497822 CA 2497822 A CA2497822 A CA 2497822A CA 2497822 A1 CA2497822 A1 CA 2497822A1
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- Canada
- Prior art keywords
- ceiling
- scriber
- drywall
- wheel
- pencil
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- 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.)
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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
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/007—Contour tracing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H7/00—Marking-out or setting-out work
- B25H7/04—Devices, e.g. scribers, for marking
-
- 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
- B43L13/02—Draughting machines or drawing devices for keeping parallelism
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The Drywall Ceiling-Scriber is a manually operated tool for scribing masking-lines on drywall ceilings to mark off a ceiling border around a room prior to texturing. Drywall installers, tapers, and painters will frequently use this tool.
The Drywall Ceiling-Scriber has three forms depending on the wall profile and the preferred manner of operation: a single wheel drywall ceiling-scriber, a double wheel drywall ceiling-scriber, and a triple wheel drywall ceiling-scriber. All three variations are designed to mark off a continuous parallel line to follow the curvature of a straight or rounded wall or a straight or rounded dropped ceiling.
The drywall ceiling-scribers can also be used to scribe cutout lines on ceiling drywall panels to fit the curvature of a rounded wall. All three drywall ceiling-scribers have a wheel-assembly at the end of a horizontal shaft that guides a scribing-pencil parallel along the wall on flat and curved surfaces. The scribing-pencil can be easily adjusted up or down and can be moved along the shaft or handle to scribe lines at different distances from the wall to mark off 4 to 12 inch borders.
The Drywall Ceiling-Scriber has three forms depending on the wall profile and the preferred manner of operation: a single wheel drywall ceiling-scriber, a double wheel drywall ceiling-scriber, and a triple wheel drywall ceiling-scriber. All three variations are designed to mark off a continuous parallel line to follow the curvature of a straight or rounded wall or a straight or rounded dropped ceiling.
The drywall ceiling-scribers can also be used to scribe cutout lines on ceiling drywall panels to fit the curvature of a rounded wall. All three drywall ceiling-scribers have a wheel-assembly at the end of a horizontal shaft that guides a scribing-pencil parallel along the wall on flat and curved surfaces. The scribing-pencil can be easily adjusted up or down and can be moved along the shaft or handle to scribe lines at different distances from the wall to mark off 4 to 12 inch borders.
Description
BACKGROUND: FIELD OF THE INVENTION:
Drywall installers are faced with many challenges in new architectural ceiling designs and applications for drywall art. Residential and commercial customers are increasingly requesting features such as circular walls and bulkheads, arches, niches, and rounded corners. There seems to be growing interests in incorporating a textured ceiling with a painted ceiling border around the perimeter of the room.
The Drywall Ceiling-Scriber is designed to overcome a problem frequently encountered by drywall installers and finishers when a ceiling border runs along a rounded wall.
The Drywall Ceiling-Scriber can also improve the accuracy, speed and reliability of cutting out drywall ceiling panels to fit the curvature of a rounded wall.
Drywall installers are faced with many challenges in new architectural ceiling designs and applications for drywall art. Residential and commercial customers are increasingly requesting features such as circular walls and bulkheads, arches, niches, and rounded corners. There seems to be growing interests in incorporating a textured ceiling with a painted ceiling border around the perimeter of the room.
The Drywall Ceiling-Scriber is designed to overcome a problem frequently encountered by drywall installers and finishers when a ceiling border runs along a rounded wall.
The Drywall Ceiling-Scriber can also improve the accuracy, speed and reliability of cutting out drywall ceiling panels to fit the curvature of a rounded wall.
BRIEF DESCRIPTION OF THE DRAWINGS:
Fig. l is a side-view of the ceiling scribing tool, guiding a scribing-pencil along a vertical wall.
Fig. 2 is a side-view of the ceiling scribing tool, guiding a scribing-pencil along the outer edge of a dropped ceiling or bulkhead.
Fig. 3 is a top-view of the ceiling scribing tool, showing wheel-assembly parts and pencil positions along the shaft or handle.
Fig. 4 is an overhead-view of the double wheel ceiling scribing tool.
Fig. 5 is an overhead-view of the triple wheel ceiling scribing tool.
Fig. 6 is an overhead-view of the conversion from and a single to a triple wheel ceiling-scriber.
Fig. 7 is a frontal overhead-view of the triple wheel ceiling-scriber after the conversion.
Fig. l is a side-view of the ceiling scribing tool, guiding a scribing-pencil along a vertical wall.
Fig. 2 is a side-view of the ceiling scribing tool, guiding a scribing-pencil along the outer edge of a dropped ceiling or bulkhead.
Fig. 3 is a top-view of the ceiling scribing tool, showing wheel-assembly parts and pencil positions along the shaft or handle.
Fig. 4 is an overhead-view of the double wheel ceiling scribing tool.
Fig. 5 is an overhead-view of the triple wheel ceiling scribing tool.
Fig. 6 is an overhead-view of the conversion from and a single to a triple wheel ceiling-scriber.
Fig. 7 is a frontal overhead-view of the triple wheel ceiling-scriber after the conversion.
SPECIFICATION:
This invention can be used in the Construction/Drywall Industry. This innovation relates to a manually operated drywall ceiling-scriber to mark off masking-lines for a ceiling border along a straight or rounded wall or a straight or rounded dropped ceiling. This is usually done when there is a requirement to have a painted ceiling border around the perimeter of a room before the ceiling is textured. This invention also relates to a tool that scribes cutout lines for ceiling drywall panels before installation, to fit the curvature of a rounded wall.
FIRST APPLICATION:
To mark off the masking-lines for a ceiling border it is a general practice to use a chalk line. This practice works well only for walls having a straight-line profile. The disadvantage here is that it requires two people to do this task, each holding the chalk line at either end before snapping the line. The chalk, that marks the line, can be messy and would later have to be wiped clean after the masking tape is applied. A chalk line cannot be used to mark a parallel line to a rounded wall. The general practice in this instance is to take a measurement from the wall every 10-12 inches. ( Ex. 6 inches for a 6- inch border, 10 inches for a 10-inch border ) This only provides a general guide for masking your line parallel to your curved wall.
This process can be time consuming and often requires re-positioning the tape if the curvature doesn't seem just right.
Using a compass or a set of calipers is time consuming and inaccurate. These instruments are not stable enough to be guided along the perimeter of a room. The pivoting point on these instruments would also scratch the finished painted surface. These instruments cannot scribe a parallel line from the edge of a dropped ceiling since there is no inner corner to guide these tools.
A pencil at the end of a string does not offer the stability required to mark a true parallel line.
DESCRIPTION OF PRIOR ART:
There are a number of scribers used for marking, scribing, tracing, dividing and transferring dimensions from straight and curved edge of flat or raised surface or point. One such instrument is known in a prior art as a Universal Measuring Scriber, patent number 2396126 issued to Rusi Nikoloz in the United States, on July 2, 2002( PCT Filing Date).
Primarily die makers, machine operators and technicians use this tool. This scriber is comprised of a body and a sliding bar as well as alignment blocks to accommodate different surface markings using scribing blades or scribing needles for marking or scribing lines. This device cannot be guided freely around the perimeter of a room with flat and curved surfaces since it does not incorporate a guiding wheel. Scribing blades and needles are not meant to trace lines on a finished wall.
In another previous art we have a drywall screw guide marker, patent document number 2137066, issued to James Lloyd Mielke on November 30, 1996. This manually operable tool scribes parallel guidelines on gypsum board, plywood, sheathing, and other materials, and is comprised of a guide that is able to roll along the edge of the work piece to be scribed with at least two slidable pencil holders on an arm which is perpendicular to the wheel-assembly.
This drywall screw guide marker has very limited capabilities. The double wheel-assembly is only useful to draw a parallel line along a straight edge. This tool is incapable of marking a parallel line along a curved edge or surface. This design does not allow the tool to be guided along a vertical wall.
Patent LJS4656744 issued on April 14th, 1987 to Henry Decker (US) is a device for marking wall panels or the like with irregular lines, which conform to irregular surfaces such as stone or brick walls. The rounded point on the handle, which engages the irregular surface does not offer the stability and ease of movement that a wheel-assembly would provide. The design does not allow the tool to be used when the irregular surface is a dropped ceiling.
SUMMARY OF THE INVENTION:
The Drywall Ceiling-Scriber (Fig. 1) is fast and accurate.
The ceiling-scriber is a manually operated tool that consists of a single, double, or triple rubber wheel-assembly (Figs.
1,4,and5) mounted on the end of a horizontal shaft or handle. The wheel-assemblies are comprised of rubber wheels that have a one-piece aluminum hub ( S ) and are held in place on an axel ( 3 )with two nickel plated collars, allowing for a smoother rotation. ( Fig. 3) The shaft and wheel-assemblies can be made of different composites.
Though the ceiling-scribers perform the same functions, the single wheel ceiling-scriber (Fig.l ) is best suited for scribing parallel lines for very extreme curvatures or tight circles. (Ex. A ceiling border around the top of a round pillar) The double wheel ceiling-scriber (Fig. 4) is more stable when scribing along large room perimeters having straight or curved surfaces. The double wheel-assembly (Fig.6) keeps the shaft or handle perpendicular to the wall preventing a possible line shift when scribing a line on the ceiling over a long distance. Both the single and double wheel ceiling scribers are hand held close to the ceiling as a scribing line is drawn. Drywall installers usually use stilts when working at this height, although a ladder will certainly suffice. The triple wheel ceiling-scriber (figs. 5 and 7) can be used in the same manner as the single and double wheel version. Figure 6 shows the conversion from a single to a triple wheel ceiling-scriber by flipping the single wheel scriber upside down and inserting the double-wheel axel (3). The tight fit holds the axel in place on the horizontal shaft. The pencil orientation is now reversed.
This variation offers added stability during the scribing process. The double wheel axel keeps the horizontal shaft or handle perfectly perpendicular to the wall, were as the lower single wheel keeps the scribing-pencil perfectly perpendicular to the ceiling, eliminating any possible line sway as long as all wheels are in contact with the wall surface. This version can also be used along straight or curved surfaces. The advantage of the triple wheel ceiling-scriber is that it can be hand held or supported on an extension pole. The perpendicular alignments that the triple wheel-assembly provides allows the tool to be operated at floor level without line sway.
One advantage of using the ceiling-scribers is that it only requires one person to use this tool to guide it around the perimeter of the room when a scribing line is required around the ceiling. This eliminates the requirement to have two people at a worksite. Another advantage is the time-saving factor. The masking line can be scribed as fast as it would take to walk around the perimeter of the room. The wheel-assembly design of the tool allows you to maintain a parallel line to the wall even if the wall takes on a new curvature or profile.
During the scribing process the operator holds the shaft or handle just below the wheel-assembly with one hand and the pencil in the other as he moves the guiding wheels along the wall surface. For all three scribers the wheel-assembly at the end of a horizontal shaft guides a scribing-pencil (4 ) parallel to the wall on flat and curved surfaces.
'the scribing-pencil can be easily adjusted up or down and can be moved along the shaft to scribe lines at different distances from the wall. ( See Fig. 1 ). The outer part of the wheel-assembly ( 1 ) guides the tool along the vertical wall.
This wheel-assembly allows you to continue your line along a rounded wall that creates a perfect masking-line that maintains the required distance from the wall.
As you look at Fig. 2, the inner part of the wheel-assembly guides the scribing-pencil along a dropped ceiling or bulkhead. The elevated wheel-assembly can now be used to catch the outer edge of a lowered ceiling having a straight or rounded profile. The top-view of the scribing tool is illustrated in Figs. ~ & 3a. In both diagrams (4) represents a position for the scribing- pencil. The scribing-pencil can be moved up or down and to difference positions along the shaft or handle. Rubber sleeves (6) offer stability to the scribing-pencil when placed in the desired position on the 1~
horizontal shaft (2). Having the scribing-pencil mounted directly on the shaft creates a perpendicular pencil alignment with the wheel-assembly and the vertical wall.
This alignment ensures that the Drywall Ceiling-Scriber traces a line with a constant distance from the surface exactly. For all three versions of the Drywall Ceiling-Scriber, the spacing of the pencil positions on the horizontal shaft is equivalent to the diameter of the wheel-assembly. This allows you to maintain the same border width when moving from a vertical wall ( Fig. l ) to a dropped ceiling (Fig. 2). For example, if the pencil position in (Fig. 3a) represents the distance from a vertical wall, then the pencil would have to be moved to the next position on the shaft (Fig. 3) to maintain the same border width for a dropped ceiling.
SECOND APPLICATION:
In residential and commercial construction, architectural designs will sometimes call for rounded walls and rounded dropped ceilings. Installing drywall ceiling panels to fit the curvature of a rounded wall presents an added challenge.
The art of fitting ceiling drywall panels to fit the profile of a rounded wall requires taking measurements at various points along the perimeter of the curved wall to a nearby drywall panel. This process is very time consuming. These measurements are plotted on the drywall panel to be installed. A line is drawn between the points. This becomes the cutting line. Since this line does not represent the exact circular profile of the vertical wall, the panel usually does not f t exactly, leaving some gaps along the perimeter that would require further filling with a plaster mix.
In a prior art ( CA 02269415 1999-04-15), inventor, Edward Astudillo has introduced a laser-sighting device for sizing odd parts of drywall for placement on ceilings and walls. This innovation uses laser beams, perpendicular to each other to calculate triangular measurements. This laser device relates more to ceilings that resemble a pentagon, hexagon, or a triangular alcove. To size drywall for such alcoves it is required to section the ceiling of the alcove into parts, into imaginary right angled triangles and rectangles. This method requires measuring distances created from a projected laser beam extended from a previously installed drywall panel to the irregular portion of the room perimeter. For a circular wall, it would require many measurements that later must be plotted on the panel to be installed. Again, this is labor intensive and less accurate when sizing drywall ceiling panels to fit the curvature of a rounded wall.
OBJECTS OF THE INVENTION:
Unlike previous art that requires a measurement component, the drywall ceilings-scribers can be used to mark off a cutout line directly on the ceiling drywall panel to be installed. The elevated wheel-assembly(s) (Figs. 1 and 4) will easily run along the top plate of framing members before wall and ceiling drywall panels are installed. In construction, the ceiling panels are applied before the walls.
Using a panel lift, an installer can easily maneuver and support a ceiling panel within 10 inches of the rounded wall by rough cutting the edge. The Drywall Ceiling-Scriber is used to scribe the final cutting line. Having a scribing-pencil (4) mounted directly on the shaft creates a perpendicular pencil alignment with the wheel-assembly ( 1 ) and the vertical wall. The line created is a constant distance from the surface, maintaining the wall profile.
The dr~w-all panel can now: be scored with a utilit<~ knife and removed while it is still supported on the lift. The panel can now be moved into place for a perfect tit therefore olin~inatin'~ unnecessary pre-tillin~~ with tiber'Tlass tape and plaster. The method just described is fast and accurate since the ceilin~~-scriber is used durin~~ the installation process. There is no need to transfer measurements. The wheel-assembly guides the scribing-pencil alon~'7 the curvature of a wall or top plate of a framing member, scribin<~> a line directly to the drywall panel to be installed while its supported on the ceilin~~ with a drvw~all lift.
This invention can be used in the Construction/Drywall Industry. This innovation relates to a manually operated drywall ceiling-scriber to mark off masking-lines for a ceiling border along a straight or rounded wall or a straight or rounded dropped ceiling. This is usually done when there is a requirement to have a painted ceiling border around the perimeter of a room before the ceiling is textured. This invention also relates to a tool that scribes cutout lines for ceiling drywall panels before installation, to fit the curvature of a rounded wall.
FIRST APPLICATION:
To mark off the masking-lines for a ceiling border it is a general practice to use a chalk line. This practice works well only for walls having a straight-line profile. The disadvantage here is that it requires two people to do this task, each holding the chalk line at either end before snapping the line. The chalk, that marks the line, can be messy and would later have to be wiped clean after the masking tape is applied. A chalk line cannot be used to mark a parallel line to a rounded wall. The general practice in this instance is to take a measurement from the wall every 10-12 inches. ( Ex. 6 inches for a 6- inch border, 10 inches for a 10-inch border ) This only provides a general guide for masking your line parallel to your curved wall.
This process can be time consuming and often requires re-positioning the tape if the curvature doesn't seem just right.
Using a compass or a set of calipers is time consuming and inaccurate. These instruments are not stable enough to be guided along the perimeter of a room. The pivoting point on these instruments would also scratch the finished painted surface. These instruments cannot scribe a parallel line from the edge of a dropped ceiling since there is no inner corner to guide these tools.
A pencil at the end of a string does not offer the stability required to mark a true parallel line.
DESCRIPTION OF PRIOR ART:
There are a number of scribers used for marking, scribing, tracing, dividing and transferring dimensions from straight and curved edge of flat or raised surface or point. One such instrument is known in a prior art as a Universal Measuring Scriber, patent number 2396126 issued to Rusi Nikoloz in the United States, on July 2, 2002( PCT Filing Date).
Primarily die makers, machine operators and technicians use this tool. This scriber is comprised of a body and a sliding bar as well as alignment blocks to accommodate different surface markings using scribing blades or scribing needles for marking or scribing lines. This device cannot be guided freely around the perimeter of a room with flat and curved surfaces since it does not incorporate a guiding wheel. Scribing blades and needles are not meant to trace lines on a finished wall.
In another previous art we have a drywall screw guide marker, patent document number 2137066, issued to James Lloyd Mielke on November 30, 1996. This manually operable tool scribes parallel guidelines on gypsum board, plywood, sheathing, and other materials, and is comprised of a guide that is able to roll along the edge of the work piece to be scribed with at least two slidable pencil holders on an arm which is perpendicular to the wheel-assembly.
This drywall screw guide marker has very limited capabilities. The double wheel-assembly is only useful to draw a parallel line along a straight edge. This tool is incapable of marking a parallel line along a curved edge or surface. This design does not allow the tool to be guided along a vertical wall.
Patent LJS4656744 issued on April 14th, 1987 to Henry Decker (US) is a device for marking wall panels or the like with irregular lines, which conform to irregular surfaces such as stone or brick walls. The rounded point on the handle, which engages the irregular surface does not offer the stability and ease of movement that a wheel-assembly would provide. The design does not allow the tool to be used when the irregular surface is a dropped ceiling.
SUMMARY OF THE INVENTION:
The Drywall Ceiling-Scriber (Fig. 1) is fast and accurate.
The ceiling-scriber is a manually operated tool that consists of a single, double, or triple rubber wheel-assembly (Figs.
1,4,and5) mounted on the end of a horizontal shaft or handle. The wheel-assemblies are comprised of rubber wheels that have a one-piece aluminum hub ( S ) and are held in place on an axel ( 3 )with two nickel plated collars, allowing for a smoother rotation. ( Fig. 3) The shaft and wheel-assemblies can be made of different composites.
Though the ceiling-scribers perform the same functions, the single wheel ceiling-scriber (Fig.l ) is best suited for scribing parallel lines for very extreme curvatures or tight circles. (Ex. A ceiling border around the top of a round pillar) The double wheel ceiling-scriber (Fig. 4) is more stable when scribing along large room perimeters having straight or curved surfaces. The double wheel-assembly (Fig.6) keeps the shaft or handle perpendicular to the wall preventing a possible line shift when scribing a line on the ceiling over a long distance. Both the single and double wheel ceiling scribers are hand held close to the ceiling as a scribing line is drawn. Drywall installers usually use stilts when working at this height, although a ladder will certainly suffice. The triple wheel ceiling-scriber (figs. 5 and 7) can be used in the same manner as the single and double wheel version. Figure 6 shows the conversion from a single to a triple wheel ceiling-scriber by flipping the single wheel scriber upside down and inserting the double-wheel axel (3). The tight fit holds the axel in place on the horizontal shaft. The pencil orientation is now reversed.
This variation offers added stability during the scribing process. The double wheel axel keeps the horizontal shaft or handle perfectly perpendicular to the wall, were as the lower single wheel keeps the scribing-pencil perfectly perpendicular to the ceiling, eliminating any possible line sway as long as all wheels are in contact with the wall surface. This version can also be used along straight or curved surfaces. The advantage of the triple wheel ceiling-scriber is that it can be hand held or supported on an extension pole. The perpendicular alignments that the triple wheel-assembly provides allows the tool to be operated at floor level without line sway.
One advantage of using the ceiling-scribers is that it only requires one person to use this tool to guide it around the perimeter of the room when a scribing line is required around the ceiling. This eliminates the requirement to have two people at a worksite. Another advantage is the time-saving factor. The masking line can be scribed as fast as it would take to walk around the perimeter of the room. The wheel-assembly design of the tool allows you to maintain a parallel line to the wall even if the wall takes on a new curvature or profile.
During the scribing process the operator holds the shaft or handle just below the wheel-assembly with one hand and the pencil in the other as he moves the guiding wheels along the wall surface. For all three scribers the wheel-assembly at the end of a horizontal shaft guides a scribing-pencil (4 ) parallel to the wall on flat and curved surfaces.
'the scribing-pencil can be easily adjusted up or down and can be moved along the shaft to scribe lines at different distances from the wall. ( See Fig. 1 ). The outer part of the wheel-assembly ( 1 ) guides the tool along the vertical wall.
This wheel-assembly allows you to continue your line along a rounded wall that creates a perfect masking-line that maintains the required distance from the wall.
As you look at Fig. 2, the inner part of the wheel-assembly guides the scribing-pencil along a dropped ceiling or bulkhead. The elevated wheel-assembly can now be used to catch the outer edge of a lowered ceiling having a straight or rounded profile. The top-view of the scribing tool is illustrated in Figs. ~ & 3a. In both diagrams (4) represents a position for the scribing- pencil. The scribing-pencil can be moved up or down and to difference positions along the shaft or handle. Rubber sleeves (6) offer stability to the scribing-pencil when placed in the desired position on the 1~
horizontal shaft (2). Having the scribing-pencil mounted directly on the shaft creates a perpendicular pencil alignment with the wheel-assembly and the vertical wall.
This alignment ensures that the Drywall Ceiling-Scriber traces a line with a constant distance from the surface exactly. For all three versions of the Drywall Ceiling-Scriber, the spacing of the pencil positions on the horizontal shaft is equivalent to the diameter of the wheel-assembly. This allows you to maintain the same border width when moving from a vertical wall ( Fig. l ) to a dropped ceiling (Fig. 2). For example, if the pencil position in (Fig. 3a) represents the distance from a vertical wall, then the pencil would have to be moved to the next position on the shaft (Fig. 3) to maintain the same border width for a dropped ceiling.
SECOND APPLICATION:
In residential and commercial construction, architectural designs will sometimes call for rounded walls and rounded dropped ceilings. Installing drywall ceiling panels to fit the curvature of a rounded wall presents an added challenge.
The art of fitting ceiling drywall panels to fit the profile of a rounded wall requires taking measurements at various points along the perimeter of the curved wall to a nearby drywall panel. This process is very time consuming. These measurements are plotted on the drywall panel to be installed. A line is drawn between the points. This becomes the cutting line. Since this line does not represent the exact circular profile of the vertical wall, the panel usually does not f t exactly, leaving some gaps along the perimeter that would require further filling with a plaster mix.
In a prior art ( CA 02269415 1999-04-15), inventor, Edward Astudillo has introduced a laser-sighting device for sizing odd parts of drywall for placement on ceilings and walls. This innovation uses laser beams, perpendicular to each other to calculate triangular measurements. This laser device relates more to ceilings that resemble a pentagon, hexagon, or a triangular alcove. To size drywall for such alcoves it is required to section the ceiling of the alcove into parts, into imaginary right angled triangles and rectangles. This method requires measuring distances created from a projected laser beam extended from a previously installed drywall panel to the irregular portion of the room perimeter. For a circular wall, it would require many measurements that later must be plotted on the panel to be installed. Again, this is labor intensive and less accurate when sizing drywall ceiling panels to fit the curvature of a rounded wall.
OBJECTS OF THE INVENTION:
Unlike previous art that requires a measurement component, the drywall ceilings-scribers can be used to mark off a cutout line directly on the ceiling drywall panel to be installed. The elevated wheel-assembly(s) (Figs. 1 and 4) will easily run along the top plate of framing members before wall and ceiling drywall panels are installed. In construction, the ceiling panels are applied before the walls.
Using a panel lift, an installer can easily maneuver and support a ceiling panel within 10 inches of the rounded wall by rough cutting the edge. The Drywall Ceiling-Scriber is used to scribe the final cutting line. Having a scribing-pencil (4) mounted directly on the shaft creates a perpendicular pencil alignment with the wheel-assembly ( 1 ) and the vertical wall. The line created is a constant distance from the surface, maintaining the wall profile.
The dr~w-all panel can now: be scored with a utilit<~ knife and removed while it is still supported on the lift. The panel can now be moved into place for a perfect tit therefore olin~inatin'~ unnecessary pre-tillin~~ with tiber'Tlass tape and plaster. The method just described is fast and accurate since the ceilin~~-scriber is used durin~~ the installation process. There is no need to transfer measurements. The wheel-assembly guides the scribing-pencil alon~'7 the curvature of a wall or top plate of a framing member, scribin<~> a line directly to the drywall panel to be installed while its supported on the ceilin~~ with a drvw~all lift.
Claims (33)
1. A manually operated drywall ceiling-scriber, in which a single wheel-assembly mounted on the end of a horizontal shaft, guides a scribing-pencil along a straight or curved surface.
2. A manually operated drywall ceiling-scriber as defined in claim 1, to mark off masking lines around the perimeter of a ceiling when a painted border is required before the ceiling is textured.
3. A drywall ceiling-scriber as defined in claim 1, in which the wheel-assembly, mounted on a horizontal shaft, is elevated to catch the outer edge of a lowered ceiling or bulkhead.
4. A drywall ceiling-scriber as defined in claim 1, in which the shaft has scribing pencil mounts in which the spacing is equivalent to the diameter of the wheel-assembly.
5. A drywall ceiling-scriber as recited in claim 4, in which the pencil mounts are directly on the horizontal shaft, creating a perpendicular alignment with the vertical wall.
6. A drywall ceiling-scriber as defined in claim 1, that marks off cutoff lines on ceiling drywall panels before installation, to fit a curved or circular wall.
7. A drywall ceiling-scriber as recited in claim 3, in which the wheel-assembly can be guided along the top plate of a framed wall before wall panels are installed.
8. A drywall ceiling-scriber as defined in claim 1, in which the scribing pencil can be moved up or down or to different positions on the shaft or handle.
9. A drywall ceiling-scriber as defined in claim 1, in which the shaft can be made of difference composites.
10. An alternate manually operated drywall ceiling-scriber in which a double wheel-assembly mounted on the end of a horizontal shaft or handle, guides a scribing pencil along a straight or curved surface.
11. A drywall ceiling-scriber as defined in claim 10, to mark off masking lines around the perimeter of a ceiling when a painted border is required before the ceiling is textured.
12. A drywall ceiling-scriber as defined in claim 10, in which the shaft has scribing pencil mounts in which the spacing is equivalent to the diameter of the wheel-assembly.
13. A drywall ceiling-scriber as defined in claim 10, in which the pencil mounts are directly on the horizontal shaft creating a perpendicular alignment with the vertical wall.
14. A drywall ceiling-scriber as defined in claim 10, in which the double-wheel axel holds the horizontal shaft or handle in a perpendicular position to the vertical wall.
15. A drywall ceiling-scriber as defined in claim 10, that marks off cutoff lines on ceiling drywall panels before installation, to fit a curved or circular wall.
16. A drywall ceiling-scriber as defined in claim 10, in which the double wheel-assembly can be guided along the top plate of a framed wall before wall panels are installed.
17. A drywall ceiling-scriber as defined in claim 10, in which the scribing-pencil can be moved up or down or to different positions on the shaft or handle.
18. A drywall ceiling-scriber as defined in claim 10, in which the shaft or handle can be made of different composites.
19. A drywall ceiling-scriber as defined in claim 10, in which the double wheel-assembly is elevated to catch the outer edge of a lowered ceiling or bulkhead.
20. An alternate manually operated drywall ceiling-scriber in which a triple wheel-assembly mounted on the end of a horizontal shaft or handle, guides a scribing pencil along a straight or curved surface.
21. A drywall ceiling-scriber as defined in claim 20, to mark off masking lines around the perimeter of a ceiling when a painted border is required before the ceiling is textured.
22. A drywall ceiling-scriber as defined in claim 20, in which the shaft has scribing pencil mounts in which the spacing is equivalent to the diameter of the wheel-assembly.
23. A drywall ceiling-scriber as defined in claim 20, in which the pencil mounts are directly on the horizontal shaft creating a perpendicular alignment with the vertical wall.
24. A drywall ceiling-scriber as defined in claim 20, in which the double-wheel axel holds the horizontal shaft or handle in a perpendicular position to the vertical wall.
25. A drywall ceiling-scriber as defined in claim 20, in which the lower single wheel at the end of the horizontal shaft or handle holds the scribing-pencil in a perpendicular position to the ceiling.
26. A drywall ceiling-scriber as defined in claim 1, which is converted to a triple wheel ceiling-scriber by turning the single wheel ceiling scriber upside down and attaching a double wheel axel.
27. A drywall ceiling-scriber as defined in claim 20, that marks off cutoff lines on ceiling drywall panels before installation, to fit a curved or circular wall.
28. A drywall ceiling-scriber as defined in claim 20, in which the triple wheel-assembly can be guided along the top plate of a framed wall before wall panels are installed.
29. A drywall ceiling-scriber as defined in claim 20, in which the scribing-pencil can be moved up or down or to different positions on the shaft or handle.
30. A drywall ceiling-scriber as defined in claim 20, in which the shaft or handle can be made of different composites.
31. A drywall ceiling-scriber as defined in claim 20, in which the double wheel axel is elevated to catch the outer edge of a lowered ceiling or bulkhead.
32. A drywall ceiling-scriber as defined in claim 20, which can be operated at floor level when attached to an extension pole.
33. A drywall ceiling-scriber as defined in claim 20, in which the triple wheel assembly keeps the horizontal shaft perpendicular to the vertical wall and the scribing-pencil perpendicular to the ceiling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2497822 CA2497822A1 (en) | 2005-01-31 | 2005-01-31 | Drywall ceiling-scriber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2497822 CA2497822A1 (en) | 2005-01-31 | 2005-01-31 | Drywall ceiling-scriber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2497822A1 true CA2497822A1 (en) | 2006-07-31 |
Family
ID=36764106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2497822 Abandoned CA2497822A1 (en) | 2005-01-31 | 2005-01-31 | Drywall ceiling-scriber |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2497822A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310924A (en) * | 2011-06-23 | 2012-01-11 | 江门市南洋船舶工程有限公司 | Ship hawsehole punching and scribing device |
| CN102848372A (en) * | 2012-03-30 | 2013-01-02 | 中国船舶重工集团公司第七○二研究所 | Marking tool |
| CN104400775A (en) * | 2014-10-29 | 2015-03-11 | 中航成飞民用飞机有限责任公司 | Hole edge distance scriber |
| CN109333493A (en) * | 2018-10-10 | 2019-02-15 | 徐州格非家居有限公司 | A kind of lineation device of large size furniture assembly |
| CN109895059A (en) * | 2017-12-08 | 2019-06-18 | 胡云 | A kind of carpentry decoration scriber |
| EP3769915A1 (en) * | 2019-07-23 | 2021-01-27 | Dietmar Hertz | Line drawing device for body parts of a motor vehicle |
| CN112518702A (en) * | 2020-11-27 | 2021-03-19 | 邹东华 | Industrial wall marking device |
-
2005
- 2005-01-31 CA CA 2497822 patent/CA2497822A1/en not_active Abandoned
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310924A (en) * | 2011-06-23 | 2012-01-11 | 江门市南洋船舶工程有限公司 | Ship hawsehole punching and scribing device |
| CN102848372A (en) * | 2012-03-30 | 2013-01-02 | 中国船舶重工集团公司第七○二研究所 | Marking tool |
| CN104400775A (en) * | 2014-10-29 | 2015-03-11 | 中航成飞民用飞机有限责任公司 | Hole edge distance scriber |
| CN109895059A (en) * | 2017-12-08 | 2019-06-18 | 胡云 | A kind of carpentry decoration scriber |
| CN109333493A (en) * | 2018-10-10 | 2019-02-15 | 徐州格非家居有限公司 | A kind of lineation device of large size furniture assembly |
| EP3769915A1 (en) * | 2019-07-23 | 2021-01-27 | Dietmar Hertz | Line drawing device for body parts of a motor vehicle |
| CN112518702A (en) * | 2020-11-27 | 2021-03-19 | 邹东华 | Industrial wall marking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |