US74964A - Improvement in peepaiing- school-slates - Google Patents
Improvement in peepaiing- school-slates Download PDFInfo
- Publication number
- US74964A US74964A US74964DA US74964A US 74964 A US74964 A US 74964A US 74964D A US74964D A US 74964DA US 74964 A US74964 A US 74964A
- Authority
- US
- United States
- Prior art keywords
- slates
- school
- improvement
- peepaiing
- slate
- 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 10
- 229910000831 Steel Inorganic materials 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 2
- 210000000088 Lip Anatomy 0.000 description 2
- 241000779819 Syncarpia glomulifera Species 0.000 description 2
- 229940036248 Turpentine Drugs 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003340 mental Effects 0.000 description 2
- 239000001739 pinus spp. Substances 0.000 description 2
- 235000015096 spirit Nutrition 0.000 description 2
Images
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
Definitions
- the body portion of the slate proper is composed as follows: Take equal parts liquid caowtchouc and esphaltum, and add thereto about double their joint weight of pulverized pumice-stone, and'mix the whole with enough turpentine to format thin paste, and apply the same to thick pasteboard by means of rollers, the same as in printing, and while the board is yet soft indent itssurface with written or other characters, as hereinafter explained.
- the frame may be in four pieces, tong'ucd together as shown, or of any other customany or desired form.
- V v V i In order toassist infantile scholars, we lit'NlGntfO'itO or both sides of the slate with letters numerals, or other characters in intagliot (See, for exauiple's,,L'Mj N O and 1 2 3 4 56 7,8 9 0 in the accompanying illustration.) The learner having amused himself by tracing the characters with the point of his pencil, acquires thereby almost imperceptibly and without labor a facility in tracing the same lines on the bare slate. C is a'rasp, of steel or iron, fastened to the frame, and serving its a pencil-sharpener. D is a pencil-holder formed by two elastic lips of steel or brass. V
- An artificial slate made with a composition of liquid caoutchouo, asphaltuzn, and pulverized pumice-stone redueed'to a thin paste with spirits oft'urpentine, and applied to pastebcard bytneans of rollers, all substantially as and for the purposes specified.
Description
,L .HegeI, J .Lehnb eutirand PATENTED C .F gers ii 'l L 7 Inventors @1111; grams gaunt @ffirt.
LAWRENCE WIEGEL, JOSEPH LEHNBEUTER, AND' CHARLES FEGERS, 0F CINCINNATI, OHIO.
'Lett'ers Patent No. 74,964, Jateol February 25,1868.-
IMPROVEMENT IN PREPARING SGHOOL-S LATES.
TO ALL WHOM IT MAY CONCERN:
Be it known that we, LAwRENcE WIEGEL, Jossrn LEHNBEUTER, and CHARLES FEGERS, all of Cincinnati, Hamilton county, and State o f'Ohio, have invented a certain new and useful School-Slate, and do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawing, making part of this specification.
The body portion of the slate proper is composed as follows: Take equal parts liquid caowtchouc and esphaltum, and add thereto about double their joint weight of pulverized pumice-stone, and'mix the whole with enough turpentine to format thin paste, and apply the same to thick pasteboard by means of rollers, the same as in printing, and while the board is yet soft indent itssurface with written or other characters, as hereinafter explained. The frame may be in four pieces, tong'ucd together as shown, or of any other customany or desired form. V v V i In order toassist infantile scholars, we lit'NlGntfO'itO or both sides of the slate with letters numerals, or other characters in intagliot (See, for exauiple's,,L'Mj N O and 1 2 3 4 56 7,8 9 0 in the accompanying illustration.) The learner having amused himself by tracing the characters with the point of his pencil, acquires thereby almost imperceptibly and without labor a facility in tracing the same lines on the bare slate. C is a'rasp, of steel or iron, fastened to the frame, and serving its a pencil-sharpener. D is a pencil-holder formed by two elastic lips of steel or brass. V
We are aware that some of the materials used by us have before been employed 'in the manufacture of Mental slates; but
What'we claim, and desire to secure by Letters Patent, is-
An artificial slate, made with a composition of liquid caoutchouo, asphaltuzn, and pulverized pumice-stone redueed'to a thin paste with spirits oft'urpentine, and applied to pastebcard bytneans of rollers, all substantially as and for the purposes specified.
In testimonyj of which invention, we hereuntoset our hands.
LAWRENCE WIEG'EL,
JOSEPH LEHNBEUTER,
Witnesses: CHARLES FEGERS.
GEO. H. KNIGHT,
JAMES H., LAYMAN.'
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US74964A true US74964A (en) | 1868-02-25 |
Family
ID=2144471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US74964D Expired - Lifetime US74964A (en) | Improvement in peepaiing- school-slates |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US74964A (en) |
-
0
- US US74964D patent/US74964A/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Bigelow | Elements of technology: taken chiefly from a course of lectures delivered at Cambridge, on the application of the sciences to the useful arts: now published for the use of seminaries and students | |
| US74964A (en) | Improvement in peepaiing- school-slates | |
| US1458762A (en) | Globe map | |
| US74815A (en) | funston | |
| US91090A (en) | Improved composition-crayon | |
| US2426A (en) | Apparatus for teaching geography and astrography | |
| US78655A (en) | eastman | |
| USRE3095E (en) | Improvement in mxbking-slates | |
| USRE3347E (en) | Improvement in binding books | |
| US56104A (en) | Geoege schmidt | |
| USD3070S (en) | Andrew little | |
| US109581A (en) | Improvement in the construction of globes, maps | |
| US87082A (en) | Improvement in folding-card globes | |
| US90733A (en) | cushman | |
| USD3449S (en) | Design for an eraser | |
| US83236A (en) | anderson | |
| USD3561S (en) | Design for a trade-mark | |
| USD3273S (en) | Design for printers type | |
| USD3803S (en) | Charles perkes | |
| USD3465S (en) | Design for the casing- of a soda-water apparatus | |
| US87793A (en) | Improved preparation for polishing metallic surfaces | |
| USD3524S (en) | Design for a floor oil-cloth pattern | |
| USD3519S (en) | Design for a trade-mark | |
| US86177A (en) | Improvement in xwriting-slates | |
| USD2937S (en) | Thomas s |