US358581A - Helena g - Google Patents
Helena g Download PDFInfo
- Publication number
- US358581A US358581A US358581DA US358581A US 358581 A US358581 A US 358581A US 358581D A US358581D A US 358581DA US 358581 A US358581 A US 358581A
- Authority
- US
- United States
- Prior art keywords
- slate
- lines
- helena
- olerke
- stuntz
- 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
Links
- 239000010454 slate Substances 0.000 description 18
- 239000000126 substance Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- BAUYGSIQEAFULO-UHFFFAOYSA-L Iron(II) sulfate Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 2
- XMXNVYPJWBTAHN-UHFFFAOYSA-N Potassium chromate Chemical compound [K+].[K+].[O-][Cr]([O-])(=O)=O XMXNVYPJWBTAHN-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000003796 beauty Effects 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- XFXPMWWXUTWYJX-UHFFFAOYSA-N cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 2
- 235000003891 ferrous sulphate Nutrition 0.000 description 2
- 239000011790 ferrous sulphate Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229940072033 potash Drugs 0.000 description 2
- 235000015320 potassium carbonate Nutrition 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 230000016776 visual perception Effects 0.000 description 2
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
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
Definitions
- Ourinvention relates to an improved method of permanently ruling, lettering, or otherwise ornamenting slates.
- the object of the indented or scratched line method has been to furnish positive checks and guides, whereby the children could learn 0 to write uniformly; but this is objectionable, because when a child has accustomed or trained himself to using a slate having such furrowed lines the writing becomes mechanical, and the sense of touch is depended on almost entirely,
- the object of this invention which consists in ruling a slate with fixed indelible lines of any suitable color that may be easily seen, and that leave no break 0 or irregularity in the surface thereof.
- any suitable instrument charged with the solutions or chemicals above described may be used to perform the work of ruling or otherwise designing the face of the slate and it is also obvious that slates may be ruled by any suitable coloring-matter that can be sunk into their surfaces or precipitated in their pores.
Description
NITE STATES OHAUNCEY R. STUNTZ, OF TERRACE PARK, AND ALFRED A. OLERKE, OF GIN OINNATI, OHIO; HELENA G. OLERKE AND WILLIAM E. JONES (EXEOUTORS OF ALFRED A. OLERKE, DECEASED) ASSIGNORS TO SAID OHAUNOEY R.
STUNTZ.
SCHOOL-SLATE.
SPECIFICATION forming part of Letters Patent No. 358,581, dated March 1, 1887.
Application filed September 1, 1884. Serial No. 142,024. (ModcL) To all whom it may concern.-
Be it known that we, CHAUNOEY R. STUNTZ and ALFRED A. GLERKE, both citizens of the United States, and residents, respectively, of
Terrace Park, and Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in School- Slates, of which the following is a specification.
Ourinvention relates to an improved method of permanently ruling, lettering, or otherwise ornamenting slates.
Heretofore slates have been ruled byscratching or cutting lines on their surfaces by means ofa sharp-pointed instrument. The indented linesproduced in this manner become faint and are obliterated in a comparatively short time, being filled with dirt and becoming as dark as the material composing the body of the slate, so that in writing a continued strain is imposed on the eyes of the children using them. These scratched lines or furrows are also 0bjectio11able,as they mar the beauty of the writing by causing an abrupt stop or break in each 2 long downstroke of the pencil,at the same time tending to weary the fingers of the writer.
The object of the indented or scratched line method has been to furnish positive checks and guides, whereby the children could learn 0 to write uniformly; but this is objectionable, because when a child has accustomed or trained himself to using a slate having such furrowed lines the writing becomes mechanical, and the sense of touch is depended on almost entirely,
instead of the sense of sight.
To remedy these defects is the object of this invention,which consists in ruling a slate with fixed indelible lines of any suitable color that may be easily seen, and that leave no break 0 or irregularity in the surface thereof.
To carry our invention into effect we rule the surface of the slate with a solution that will sink into or penetrate its pores, and that will produce either on the body of the slate itself a colored precipitate, or that can be pre 5 cipitated by another solution. In our process blue lines are produced by ruling first with solution of ferrous sulphate, followed by prussiate of potash. Yellow lines are produced by zinc solution followed by chromate ofpotash or chromate of potash followed by acetate of lead. The application of zinc solution followed by ammonic sulphide produces a grayish-white line,and the stronger acids also produce lines of a whitish hue.
It is obvious that any suitable instrument charged with the solutions or chemicals above described may be used to perform the work of ruling or otherwise designing the face of the slate and it is also obvious that slates may be ruled by any suitable coloring-matter that can be sunk into their surfaces or precipitated in their pores.
We claim 'As a new article of manufacture, a school- 55 slate made of argillaceous slate, having indelible lines,letters,or other marks produced within its surface by the chemical combination of an adjunct with the aluminum of its said substance, substantially as described.
In testimony whereof we have hereunto set our hands.
CHAUNOEY R. STUNTZ. ALFRED A. OLERKE.
Witnesses:
JOHN E. Jones, 0. L. J ONES.
Publications (1)
Publication Number | Publication Date |
---|---|
US358581A true US358581A (en) | 1887-03-01 |
Family
ID=2427622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US358581D Expired - Lifetime US358581A (en) | Helena g |
Country Status (1)
Country | Link |
---|---|
US (1) | US358581A (en) |
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0
- US US358581D patent/US358581A/en not_active Expired - Lifetime
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