US187067A - Improvement in slate-pencil sharpeners - Google Patents
Improvement in slate-pencil sharpeners Download PDFInfo
- Publication number
- US187067A US187067A US187067DA US187067A US 187067 A US187067 A US 187067A US 187067D A US187067D A US 187067DA US 187067 A US187067 A US 187067A
- Authority
- US
- United States
- Prior art keywords
- slate
- improvement
- pencil
- pencil sharpeners
- loop
- 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
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 241001293028 Callonetta leucophrys Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- B43L23/00—Sharpeners for pencils or leads
- B43L23/08—Sharpeners for pencils or leads in which the pencils or leads are sharpened mainly by rotational movement against cutting blades
Definitions
- This invention consists, briefly, in a tool having spring-jaws, within which jawsl there is formed a conical die, having ile-like teeth. Within the loop formed by the spring a filelike surface is formed, by whichthe end of the slate-pencil is first reduced. It is then inserted into a conical die, turned backward and forward, and brought to a point without any risk of breaking.
- a A are the jaws, and B the spring, forming a loop, within which are cut file-like teeth G.
- a conical die, D Within the jaws A there is formed a conical die, D, having longitudinal -le-like teeth.
- the front end ofthe die is oblong in form, (see Fig. 3,) and the teeth run off to a point at the rear, as shown in Fig. 4.
- the spring B causes a constant pressure of the serrated die upon the slate-pencil, and theoblong form given tothe mouth of the die prevents the point of the pencil being broken by any slight lateral strain.
- the tool is made of steel or similar hard metal, and is polished outside, making it convenient for the pocket.
- the teeth G being within the loop B, are prevented from tearing the pocket.
- a slatepencil sharpener consisting of a spring-loop, B, connecting the two halves of ametal block, each block having formed within it the half of a conical abrading-cavity, the point of the said cavity being toward the loop B, and the base of the cavity having an elliptic section, as shown in Fig. 3.
- a pencil Sharpener consisting of two separated halves of a metal block, each having formed within it the half of a conical abrading-cavity, the said parts of the metallic block being connected and closed together/by the spring-loop B, having an interior abrading-surface, C, substantially as herein described.
Landscapes
- Drawing Aids And Blackboards (AREA)
Description
UNITED STATES PATENT OFFICE JAMES R. TEAL AND GARRETT MOULDER, OF PHCENIXVILLE, PA.
IMPROVEMENT IN SLATE-PENCIL SHARPENERS.
Speciiication forming part of Letters Patent No. 187,067., dated February 6, 1877 application lled November 17, 1876.
To all whom it may concern Be it known that we, JAMES R. TEAL and GARRETT MOULDER, both of Phoenixville, Chester county, Pennsylvania, have invented a new and useful- Improvement in Slate-Pencil Sharpener, which improvement is fully set forth in the following'specification and accompanying drawing, in which- Figure l is a side view of the slate-pencil Sharpener. Fig. 2 is a longitudinal section thereof. Fig. 3 is an end view of the same. Fig. 4 is a cross-section.
This invention consists, briefly, in a tool having spring-jaws, within which jawsl there is formed a conical die, having ile-like teeth. Within the loop formed by the spring a filelike surface is formed, by whichthe end of the slate-pencil is first reduced. It is then inserted into a conical die, turned backward and forward, and brought to a point without any risk of breaking.
A A are the jaws, and B the spring, forming a loop, within which are cut file-like teeth G. Within the jaws A there is formed a conical die, D, having longitudinal -le-like teeth. The front end ofthe die is oblong in form, (see Fig. 3,) and the teeth run off to a point at the rear, as shown in Fig. 4.
The spring B causes a constant pressure of the serrated die upon the slate-pencil, and theoblong form given tothe mouth of the die prevents the point of the pencil being broken by any slight lateral strain.
The tool is made of steel or similar hard metal, and is polished outside, making it convenient for the pocket. The teeth G, being within the loop B, are prevented from tearing the pocket.`
The use of this tool by the pupils of a school will obviate the disagreeable noise made by sharpening the pencils with a knife.
We claim- 1. As a new article of manufacture, a slatepencil sharpener consisting of a spring-loop, B, connecting the two halves of ametal block, each block having formed within it the half of a conical abrading-cavity, the point of the said cavity being toward the loop B, and the base of the cavity having an elliptic section, as shown in Fig. 3.
2. As a new article of manufacture, a pencil Sharpener consisting of two separated halves of a metal block, each having formed within it the half of a conical abrading-cavity, the said parts of the metallic block being connected and closed together/by the spring-loop B, having an interior abrading-surface, C, substantially as herein described.
JAMES R. TEAL. GARRETT MOULDER.
Witnesses:
R. H. DAvIEs, JOHN PRINTZ.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US187067A true US187067A (en) | 1877-02-06 |
Family
ID=2256474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US187067D Expired - Lifetime US187067A (en) | Improvement in slate-pencil sharpeners |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US187067A (en) |
-
0
- US US187067D patent/US187067A/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US113031A (en) | William charles edge | |
| US941631A (en) | Pencil-sharpener. | |
| US1130695A (en) | Scissors-sharpener. | |
| US207079A (en) | Improvement in abrading-tools for dental purposes | |
| US509899A (en) | Eraser | |
| US1242049A (en) | Pencil-sharpener. | |
| US196676A (en) | Improvement in combined pencil holder and sharpener | |
| US136230A (en) | Improvement in combined rulers and pencil-sharpeners | |
| US1481604A (en) | Combination pencil sharpener and pocket clip | |
| US258919A (en) | Cigar-reamer | |
| US690172A (en) | Sharpener for knives, scissors, &c. | |
| US296730A (en) | Combined pencil-sharpener | |
| US552020A (en) | Pencil holder and sharpener | |
| US703579A (en) | Trousers-guard. | |
| US435917A (en) | Albert g | |
| US531031A (en) | Combined lead-pencil and sharpener | |
| US129956A (en) | Improvement in pencil-sharpeners | |
| US184799A (en) | Improvement in axes | |
| US235898A (en) | Lebbetjs h | |
| US116276A (en) | Improvement in pencil-sharpeners | |
| US235678A (en) | Willabd h | |
| US750238A (en) | bechtold | |
| US378117A (en) | Lead-pencil sharpener | |
| US298834A (en) | Frank winthbop davenpobt | |
| US202070A (en) | Improvement in pencil-sharpeners |