US3341946A - Drawing apparatus - Google Patents
Drawing apparatus Download PDFInfo
- Publication number
- US3341946A US3341946A US407627A US40762764A US3341946A US 3341946 A US3341946 A US 3341946A US 407627 A US407627 A US 407627A US 40762764 A US40762764 A US 40762764A US 3341946 A US3341946 A US 3341946A
- Authority
- US
- United States
- Prior art keywords
- drawing board
- magnetic means
- magnetic
- metallic members
- embedded
- 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.)
- Expired - Lifetime
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- 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
Definitions
- the present invention relates to a drafting arrangement and, more particularly, consists in the combination of a drawing board consisting of insulating material, one or more sets of parallel narrow elongated magnetizable magnetic members embedded in the drawing board and magnetic means mounted turnably about an axis extending normal to the surface of the drawing board with the poles of these magnetic means located at a small distance from the surface of the drawing board so that the magnetic means interact with the magnetizable metallic members and is caused to turn into alignment with the same.
- the arrangement according to the present invention includes also a drawing implement preferably mounted on the magnetic means set forth above.
- FIG. 1 is an elevational view showing the construction on the drawing board and the magnetic arrangement above the board for obtaining alignment in a predetermined direction;
- FIG. 2 is a plan View of the arrangement of FIG. 1;
- FIG. 3 is a schematic diagram illustrating the principle for the construction of the drawing board through ernbedding of magnetizable members.
- FIG. 4 is a functional schematic diagram, and shows an electromagnetic arrangement whereby the alignment of the apparatus, in accordance with the present invention, is accomplished through the operation of a servo system.
- FIG. 1 a series of parallel magnetizable wires 2 are embedded in non-magnetic or insulating material 1.
- the material 1 corresponds to a drafting board.
- the wires 2 may be made, for example, of magnetizable iron.
- a permanent magnet 4 is located above the drawing board and in contact therewith. Due to the condition that a magnetic circuit will always seek the shortest possible path, the permanent magnet when placed on top of the drawing board 1, tends to align itself with one or more of the wires 2. If the magnet is ice placed at an angle with respect -to these wires rather than parallel therewith, the magnet will move and rotate so that it cornes into alignment with the wires 2.
- a housing 5 is rotatable about the axis of the magnet, and has attached thereto a ruler 3.
- the housing 5 also has secured to it a scale 7 which can be placed, if desired, directly upon the ruler.
- An indicator 6 is rotatable about the axis of the housing and secured to the magnet.
- the scale 7 may be graduated in angular degrees. The apparatus is used by placing it upon the drawing board 1 and allowing the magnet 4 to align itself with respect to the wires 2 embedded within the drawing board. If now, for example, an angle of 0 is desired, the housing 5 is rotated until the scale 7 reads 0 with respect to the indicator 6.
- any other desired angle of the scale 7 and hence the ruler 3 may -be Iobtained by rotating the housing so that the indicator points to the desired angle on the scale.
- FIG. 2 shows the relationship of the parts of FIG. 1 in a top view.
- FIG. 3 shows the drawing board with the megnetizable wires embedded in it.
- the magnetic means is of the electromagnetic type.
- a servo positioning system is applied to actuate the magnet 10.
- a magnetic field is established through the coils 8 and 9.
- an error signal is induced within the coils 16 and 17.
- the coil 16 is located precisely behind coil 17 in the drawing.
- This error signal is amplified through suitable relay control means and then drives a servo motor which in t-urri positions the magnet 10, by being mechanically coupled thereto.
- a drafting arrangement comprising, in combination, a drawing board consisting of insulating material; at least one set of parallel narrow elongated magnetizable metallic members embedded in said drawing board of insulating material and extending parallel to the surface thereof and spaced from each other; support means adapted to be placed on said drawing board above said embedded magnetizable narrow elongated metallic members; magnetic means supported by said support means turnably about an axis extending normal to the surface of said drawing board with the poles of said magnetic means located at a small distance from said surface so that said magnetic means interact with said narrow elongated metallic members and is caused to turn into alignment with the same; and a drawing implement mounted on one of said means.
- a drafting arrangement according to claim 1 wherein said drawing implement is mounted on said support and said drafting arrangement includes a scale means and indicator means, one of said means secured to said drawing implement and the other of said means secured to the magnetic means and rotatable with the latter.
- a drafting arrangement including electromagnetic coils wound about said magnetic means and providing an electrical signal indicative of any misalignment of said magnetic means with respect to said elongated metallic members; driving means coupled to said electromagnetic means for turning the same; a servo motor coupled to said driving means to provide power for operating the same and driving said magnetic means; relay means connected to said coils and to said servo motor; and an electrical power supply for energizing said coil and said motor so that said relay means 0perates said motor in a direction whereby said magnetic means achieves alignment with said elongated metallic members, the alignment position of said magnetic means corresponding to a null condition of the combined cur- Arents within said coils.
Description
Sept- 19 1967 G` BULLINGER 3,341,946
DRAWING APPARATUS Filed Oct. 50, 1964 United States Patent O 3,341,946 DRAWING APPARATUS Gottlieb Bullinger, Munich, Germany, assignor to Clemens Rieiler, Nesselwang, Germany Filed Oct. 30, 1964, Ser. No. 407,627 Claims priority, application Germany, Nov. 8, 1963, B 74,192 6 Claims. (Cl. 33-76) ABSTRACT F THE DISCLGSURE A drafting arrangement including a drawing board having embedded therein one or more sets of parallel narrow elongated magnetizable metallic members, this drawing arrangement including also magnetic means turnably about an axis normal to the drawing board and a drawing implement preferably mounted on the magnetic means.
The present invention relates toa drafting arrangement and, more particularly, consists in the combination of a drawing board consisting of insulating material, one or more sets of parallel narrow elongated magnetizable magnetic members embedded in the drawing board and magnetic means mounted turnably about an axis extending normal to the surface of the drawing board with the poles of these magnetic means located at a small distance from the surface of the drawing board so that the magnetic means interact with the magnetizable metallic members and is caused to turn into alignment with the same. The arrangement according to the present invention includes also a drawing implement preferably mounted on the magnetic means set forth above.
The novel features which are considered a characteristic for the invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation will be best understood from the following description of a speciiic embodiment when read in Iconnection with the accompanying drawing, in which:
FIG. 1 is an elevational view showing the construction on the drawing board and the magnetic arrangement above the board for obtaining alignment in a predetermined direction;
FIG. 2 is a plan View of the arrangement of FIG. 1;
FIG. 3 is a schematic diagram illustrating the principle for the construction of the drawing board through ernbedding of magnetizable members; and
FIG. 4 is a functional schematic diagram, and shows an electromagnetic arrangement whereby the alignment of the apparatus, in accordance with the present invention, is accomplished through the operation of a servo system.
Referring to the drawing, in FIG. 1 a series of parallel magnetizable wires 2 are embedded in non-magnetic or insulating material 1. The material 1 corresponds to a drafting board. The wires 2 may be made, for example, of magnetizable iron. A permanent magnet 4 is located above the drawing board and in contact therewith. Due to the condition that a magnetic circuit will always seek the shortest possible path, the permanent magnet when placed on top of the drawing board 1, tends to align itself with one or more of the wires 2. If the magnet is ice placed at an angle with respect -to these wires rather than parallel therewith, the magnet will move and rotate so that it cornes into alignment with the wires 2. A housing 5 is rotatable about the axis of the magnet, and has attached thereto a ruler 3. The housing 5 also has secured to it a scale 7 which can be placed, if desired, directly upon the ruler. An indicator 6 is rotatable about the axis of the housing and secured to the magnet. The scale 7 may be graduated in angular degrees. The apparatus is used by placing it upon the drawing board 1 and allowing the magnet 4 to align itself with respect to the wires 2 embedded within the drawing board. If now, for example, an angle of 0 is desired, the housing 5 is rotated until the scale 7 reads 0 with respect to the indicator 6. In a similar manner, any other desired angle of the scale 7 and hence the ruler 3 may -be Iobtained by rotating the housing so that the indicator points to the desired angle on the scale. FIG. 2 shows the relationship of the parts of FIG. 1 in a top view. FIG. 3 shows the drawing board with the megnetizable wires embedded in it.
In. FIG. 4 the magnetic means is of the electromagnetic type. On the basis that such electromagnetic means cannot align itself in the direction determined by its field acting in conjunction with the embedded wires 2, a servo positioning system is applied to actuate the magnet 10. Thus, a magnetic field is established through the coils 8 and 9. When this magnetic iield is not in line with the embedded rods 2, an error signal is induced within the coils 16 and 17. The coil 16 is located precisely behind coil 17 in the drawing. This error signal is amplified through suitable relay control means and then drives a servo motor which in t-urri positions the magnet 10, by being mechanically coupled thereto.
I claim:
1. A drafting arrangement comprising, in combination, a drawing board consisting of insulating material; at least one set of parallel narrow elongated magnetizable metallic members embedded in said drawing board of insulating material and extending parallel to the surface thereof and spaced from each other; support means adapted to be placed on said drawing board above said embedded magnetizable narrow elongated metallic members; magnetic means supported by said support means turnably about an axis extending normal to the surface of said drawing board with the poles of said magnetic means located at a small distance from said surface so that said magnetic means interact with said narrow elongated metallic members and is caused to turn into alignment with the same; and a drawing implement mounted on one of said means.
2. A drafting arrangement according to claim 1 wherein said magnetic means is a permanent magnet.
3. A drafting arrangement according to claim 1 wherein said drawing implement is a ruler.
4. A drafting arrangement according to claim 1 wherein said drawing implement is mounted on said support and said drafting arrangement includes a scale means and indicator means, one of said means secured to said drawing implement and the other of said means secured to the magnetic means and rotatable with the latter.
5. A drafting arrangement according to claim 1 including electromagnetic coils wound about said magnetic means and providing an electrical signal indicative of any misalignment of said magnetic means with respect to said elongated metallic members; driving means coupled to said electromagnetic means for turning the same; a servo motor coupled to said driving means to provide power for operating the same and driving said magnetic means; relay means connected to said coils and to said servo motor; and an electrical power supply for energizing said coil and said motor so that said relay means 0perates said motor in a direction whereby said magnetic means achieves alignment with said elongated metallic members, the alignment position of said magnetic means corresponding to a null condition of the combined cur- Arents within said coils.
6. A drafting arrangement according t-o claim 5 wherein said drawing implement is a ruler secured to said magnetic means.
References Cited 5 UNITED STATES PATENTS 1,003,900 9/ 1911 Hanson 269-8 X 1,624,538 4/1927 Crain 269--8 X 3,093,919 6/1963 Holtz 33-107 X 10 LEONARD FORMAN, Primary Examiner.
H. N. HAROIAN, Assistant Examiner.
Claims (1)
1. A DRAFTING ARRANGEMENT COMPRISING, IN COMBINATION, A DRAWING BOARD CONSISTING OF INSULATING MATERIAL; AT LEAST ONE SET OF PARALLEL NARROW ELONGATED MAGNETIZABLE METALLIC MEMBERS EMBEDDED IN SAID DRAWING BOARD OF INSULATING MATERIAL AND EXTENDING PARALLEL TO THE SURFACE THEREOF AND SPACED FROM EACH OTHER; SUPPORT MEANS ADAPTED TO BE PLACED ON SAID DRAWING BOARD ABOVE SAID EMBEDDED MAGNETIZABLE NARROW ELONGATED METALLIC MEMBERS; MAGNETIC MEANS SUPPORTED BY SAID SUPPORT MEANS TURNABLY ABOUT AN AXIS EXTENDING NORMAL TO THE SURFACE OF SAID DRAWING BOARD WITH THE POLES OF SAID MAGNETIC MEANS LOCATED AT A SMALL DISTANCE FROM SAID SURFACE SO THAT SAID MAGNETIC MEANS INTERACT WITH SAID NARROW ELONGATED METALLIC MEMBERS AND IS CAUSED TO TURN INTO ALIGNMENT WITH THE SAME; AND A DRAWING IMPLEMENT MOUNTED ON ONE OF SAID MEANS.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB74192A DE1264997B (en) | 1963-11-08 | 1963-11-08 | Drawing device with a ruler that can be adjusted to one or more basic directions |
Publications (1)
Publication Number | Publication Date |
---|---|
US3341946A true US3341946A (en) | 1967-09-19 |
Family
ID=6978150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US407627A Expired - Lifetime US3341946A (en) | 1963-11-08 | 1964-10-30 | Drawing apparatus |
Country Status (5)
Country | Link |
---|---|
US (1) | US3341946A (en) |
AT (1) | AT264150B (en) |
CH (1) | CH443967A (en) |
DE (1) | DE1264997B (en) |
GB (1) | GB1092104A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS585800B2 (en) * | 1973-01-31 | 1983-02-01 | タケフジコウギヨウ カブシキガイシヤ | Universal parallel ruler device |
GB8608165D0 (en) * | 1986-04-03 | 1986-05-08 | Frazer Design Consultants Ltd | Draughting tables &c |
DE3835364C1 (en) * | 1988-10-15 | 1990-03-29 | Aristo Graphic Systeme Gmbh & Co Kg, 2000 Hamburg, De |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1003900A (en) * | 1910-11-17 | 1911-09-19 | Pratt & Whitney Co | Magnetic chuck. |
US1624538A (en) * | 1926-07-15 | 1927-04-12 | John P Lair | Magnetic stencil and work holder |
US3093919A (en) * | 1957-11-18 | 1963-06-18 | Hermann J Holtz | Magnetic display arrangement |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE917118C (en) * | 1952-02-16 | 1954-08-26 | Gerda Lemme Geb Ziemke | School blackboard with permanent writing surface |
DE1775930A1 (en) * | 1966-12-27 | 1972-02-03 | Kugelfischer G Schaefer & Co | Device for heavy-duty, axial and radial storage of rotating parts |
-
1963
- 1963-11-08 DE DEB74192A patent/DE1264997B/en active Pending
-
1964
- 1964-10-26 CH CH1390264A patent/CH443967A/en unknown
- 1964-10-26 AT AT904764A patent/AT264150B/en active
- 1964-10-30 US US407627A patent/US3341946A/en not_active Expired - Lifetime
- 1964-11-09 GB GB45499/64A patent/GB1092104A/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1003900A (en) * | 1910-11-17 | 1911-09-19 | Pratt & Whitney Co | Magnetic chuck. |
US1624538A (en) * | 1926-07-15 | 1927-04-12 | John P Lair | Magnetic stencil and work holder |
US3093919A (en) * | 1957-11-18 | 1963-06-18 | Hermann J Holtz | Magnetic display arrangement |
Also Published As
Publication number | Publication date |
---|---|
CH443967A (en) | 1967-09-15 |
GB1092104A (en) | 1967-11-22 |
AT264150B (en) | 1968-08-26 |
DE1264997B (en) | 1968-03-28 |
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