US139266A - Improvement in writing-tablets - Google Patents
Improvement in writing-tablets Download PDFInfo
- Publication number
- US139266A US139266A US139266DA US139266A US 139266 A US139266 A US 139266A US 139266D A US139266D A US 139266DA US 139266 A US139266 A US 139266A
- Authority
- US
- United States
- Prior art keywords
- tablets
- writing
- improvement
- specified
- white
- 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
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000002966 varnish Substances 0.000 description 6
- 229920001800 Shellac Polymers 0.000 description 2
- 241000736873 Tetraclinis articulata Species 0.000 description 2
- 239000004359 castor oil Substances 0.000 description 2
- 235000019438 castor oil Nutrition 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229920000591 gum Polymers 0.000 description 2
- 229940113147 shellac Drugs 0.000 description 2
- 235000013874 shellac Nutrition 0.000 description 2
- 239000004208 shellac Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N tin hydride Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000000052 vinegar Substances 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
- B43L1/04—Blackboards
- B43L1/10—Writing surfaces thereof
-
- 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
Description
' of ninety per cent. or absolute alcohol.
will make a stiff, transparent varnish, and is.
U NITED STATEs AUGUST SGHINDLER, OF LANCASTER, PENNSYLVANIA.
IMPROVEMENT IN WRITING-TABLETS.
Specification forming part of Letters Patent No. 139,266, dated May 27, 187 3; application flied February 18, 1873. i
To all whom it may concern:
Be it known that I, AUGUST SGHINDLER, of Lancaster, in the State of Pennsylvania,
have invented certain Improvements in Writ- (gum) sandarac and eight ounces of white shellac, ten ounces of castor oil, in one gallon This applied as set forth in my patent hearing date January 7 1873, No. 134,566, for making tablets of paper and paste-board cut to size, pasted and varnished over in like manner with the foregoing varnish herein specified. This is suffered to dry before a second coat is given, or even a third coating may be given, or more. As all varnish has a tendency to be somewhat greasy on the surface, this is removed by the use of finely powdered or washed chalk (creta preparata) by dipping a soft rag in vinegar, and,
with the rag so moistened, to
apply the chalk by rubbing gently over the surface, whereby all greasiness will be removed and the tablets receive the inkfrom the pen as freely as good writing-paper; and
amount of handling or dry friction without becoming defaced as on a slate-surface with a pencil. The desire having been expressed to have the surface of a white color led meto experiment further to produce the article desired in our public schools, and after numerous trials and experiments resulted in the new composition herein specified. In order to render these tablets more durable I now surround them with a tin border, as in the sample herewith sent.
Inasmuch as my former patent is for a different composition, I could not feel protected in the use of this, my subsequent improvement, which I desire to secure and claim, as a coating for white (colored) therefore What 1 claim is-- i The specified transparent composition for coating white paper-tablets, substantially in the manner and for the purpose specified.
AUGUST SGHINDLER.
Witnesses:
JNo M. AMWEG,
JACOB STAUFFEB.
PATENT OFFICE.
when thoroughly dry the ink can be removed with a moist rag with ease, yet will bear any writin g-tablets
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US139266A true US139266A (en) | 1873-05-27 |
Family
ID=2208680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US139266D Expired - Lifetime US139266A (en) | Improvement in writing-tablets |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US139266A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170299900A1 (en) * | 2016-02-04 | 2017-10-19 | Massachusetts Institute Of Technology | Devices and Methods For Optical Spatial Mode Control |
-
0
- US US139266D patent/US139266A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170299900A1 (en) * | 2016-02-04 | 2017-10-19 | Massachusetts Institute Of Technology | Devices and Methods For Optical Spatial Mode Control |
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