US122763A - Improvement in compositions for covering blackboards - Google Patents
Improvement in compositions for covering blackboards Download PDFInfo
- Publication number
- US122763A US122763A US122763DA US122763A US 122763 A US122763 A US 122763A US 122763D A US122763D A US 122763DA US 122763 A US122763 A US 122763A
- Authority
- US
- United States
- Prior art keywords
- blackboards
- covering
- compositions
- improvement
- evans
- 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
- 239000000203 mixture Substances 0.000 title 1
- 150000001875 compounds Chemical class 0.000 description 3
- 229910001651 emery Inorganic materials 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920001800 Shellac Polymers 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 description 1
- 229940113147 shellac Drugs 0.000 description 1
- 235000013874 shellac Nutrition 0.000 description 1
- 239000004208 shellac Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/16—Writing inks
-
- 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
- B43L1/04—Blackboards
- B43L1/10—Writing surfaces thereof
Definitions
- the ingredients of which my compound is composed are as follows: One (1) gallon alcohol; one and one-half (1%) pounds gum shellac;
- the surface thus made, when dry, may be written upon by a common slate-pencil. If the surface isdesigned exclusively for chalk onehalf of the emery may be dispensed with.
- a compound for covering blackboards, &c. composed of the ingredients named.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Color Printing (AREA)
- Paper (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Description
UNITED STATES PATENT OFFICE.
NATHAN V. EVANS, OF WINSLOW, INDIANA, ASSIGNOR TO. HIMSELF AND -JOEL B. EVANS, OF SAME PLACE.
IMPROVEMENT IN COMPOSITIONS FOR COVERING BLACKBOARDS, 8co- Specification forming part of Letters Patent No. 122,763, dated January 16, 1872.
' globes, 820., for the purpose of giving them a Writing surface adapted for chalk or slate-pencil.
The ingredients of which my compound is composed are as follows: One (1) gallon alcohol; one and one-half (1%) pounds gum shellac;
one (1)poundflourof emery; one-half (:1?) pound ivory black. Umber maybe used instead of ivory black, if desired.
- Theseingredientsshouldbethoroughlylnixed together before being used. They may be applied to any proper surface by means of a paint or other brush. The surface after being coated should be dressed smooth with sand-paper.
The surface thus made, when dry, may be written upon by a common slate-pencil. If the surface isdesigned exclusively for chalk onehalf of the emery may be dispensed with.
Thiscompound possessesmarkedadvantages over any in use, inasmuch as it furnishes a better and more durable surface.
I am aware of the patent of W. W. Dudley, in which patent pumice-stone is used as a base; but a compound made with such a base and in accordance With said patent is practically of little value because the surface soon becomes glossy and refuses the chalk.
Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is
A compound for covering blackboards, &c., composed of the ingredients named.
This specification signed and witnessed this 10th day of August, 1871.
NATHAN V. EVANS.
Witnesses:
J. W. RICHARDSON,- D. C. ASHBY.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US122763A true US122763A (en) | 1872-01-16 |
Family
ID=2192201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US122763D Expired - Lifetime US122763A (en) | Improvement in compositions for covering blackboards |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US122763A (en) |
-
0
- US US122763D patent/US122763A/en not_active Expired - Lifetime
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