US52453A - Improvement in rulers - Google Patents
Improvement in rulers Download PDFInfo
- Publication number
- US52453A US52453A US52453DA US52453A US 52453 A US52453 A US 52453A US 52453D A US52453D A US 52453DA US 52453 A US52453 A US 52453A
- Authority
- US
- United States
- Prior art keywords
- rulers
- rubber
- improvement
- ruler
- substances
- 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
- 240000002027 Ficus elastica Species 0.000 description 16
- 229920001195 polyisoprene Polymers 0.000 description 16
- 239000000126 substance Substances 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 241000212384 Bifora Species 0.000 description 2
- 101710010587 CASP13 Proteins 0.000 description 2
- 239000000899 Gutta-Percha Substances 0.000 description 2
- 229920000588 Gutta-percha Polymers 0.000 description 2
- 240000000342 Palaquium gutta Species 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002965 rope Substances 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
- B43L7/00—Straightedges
Definitions
- UrrE SrArEs PATENT ERICE UrrE SrArEs PATENT ERICE.
- the ruler when made of the required thickness to give the bevels to prevent the ink from running onto the paper or other surface that is being ruled, will be too rigid to be readily adapted to curved surfaces, such as the pages of an account-book when open; and if made of a more iiexible substance, such as soft vulcanized india-rubber, it will bend in all directions and fail to present an edge by which to rule rule a straight line.
- my invention consists in making a ruler by the union or combination of two substances, one having the property of flexible elasticity, such as hard vulcanized india-rubber, called vulcauite, or steel, or whalebone, and the other very flexible, such as soft vulcanized india-rubber.
Landscapes
- Paper (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
- Reinforced Plastic Materials (AREA)
Description
UrrE SrArEs PATENT ERICE.
e. W. soHRAMM, oE NEW YORK, N. Y., JAss'ieNoR 'ro D. N. RoPEs, or ORANGE, NEW JERsEY.
' IMPROVEMENT IN RuLERs.
Specification forming part of Letters Patent No. 52,453, dated February 6, 1866.
To all whom 'it may concern:
Be it known that I, G. W. SOHRAMM, of the city, county, and State of New York, have invented a new and' useful Improvement in Rulers 5 and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accom pan y ing drawings, making part of this specification, in which- Figure l is an under face View of a ruler constructed in accordance with my invention; Fig. 2, a side view of the same, and Fig. 3 a cross-section thereof.
The same letters indicate like parts in all the figures.
- sessing the property which may be termed flexible elasticity,77 such as steel or the hard compound of india-rubber, the ruler, when made of the required thickness to give the bevels to prevent the ink from running onto the paper or other surface that is being ruled, will be too rigid to be readily adapted to curved surfaces, such as the pages of an account-book when open; and if made of a more iiexible substance, such as soft vulcanized india-rubber, it will bend in all directions and fail to present an edge by which to rule rule a straight line.
The difficulties above pointed out are effectually overcome by my invention, which consists in making a ruler by the union or combination of two substances, one having the property of flexible elasticity, such as hard vulcanized india-rubber, called vulcauite, or steel, or whalebone, and the other very flexible, such as soft vulcanized india-rubber. By
the union of two such substances the required thickness and flexibility are readily obtained.
The mode of application of my said invention which I have tried with success and deem to be the best is represented in the accompanying drawings, in which a represent-s the upper part of the ruler, made of the material known as vulcanite,77 or the hard compound of indiarubber or gutta-percha. rIhe two edges should be made straight and parallel. I prefer to make this part about one-sixteenth of an inch in thickness, so that it will readily spring to any curvature required. And to the Linder surface of this is secured a strip, b, of soft vulcanized india-rubber of about three-sixteenths of an inch in thickness and narrower than the upper part, a, so that the latter shall project about an eighth of au inch along both edges.
The two parts a and b, I prefer to unite by means of india-rubber or other cement, although they may be united by other means; and although I prefer the above mode of application of my said invention and believe it to be the best, yet I do not wish to be understood as limiting .my claim of invention thereto, as other substances having the requisite properties and other modes of uniting them may be substituted.
What I claim as invention, and desire to secure by Letters Patent, is-
A ruler formed by the union of two substances, one iiexible and elastic and the other eXihle, or one more iiexible and elastic than' the other, such as the substances well known as hard77 and soft vulcanized india-rubber, substantially as and for the purpose speciiied.
G. W. SCHRAMM.
-Witnesses: v
WM. H. BIsHoP, ANDREW DE LACY.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US52453A true US52453A (en) | 1866-02-06 |
Family
ID=2121998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US52453D Expired - Lifetime US52453A (en) | Improvement in rulers |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US52453A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040044154A1 (en) * | 2002-09-04 | 2004-03-04 | Chi-I Kuo | Bimodal polyolefin production process and films therefrom |
-
0
- US US52453D patent/US52453A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040044154A1 (en) * | 2002-09-04 | 2004-03-04 | Chi-I Kuo | Bimodal polyolefin production process and films therefrom |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US52453A (en) | Improvement in rulers | |
| US443652A (en) | And major romeyn | |
| US723518A (en) | Drawing-board and t-square. | |
| US407756A (en) | Henry b | |
| US515522A (en) | Ruler | |
| US84166A (en) | Improved brush | |
| US290668A (en) | davis | |
| US538709A (en) | Desk-ruler | |
| US712964A (en) | Drafting instrument. | |
| US472079A (en) | Combined blotter and ruler | |
| US502112A (en) | T-square | |
| US1215136A (en) | Lining, marking, copying, or other indicating guide. | |
| US722141A (en) | Combined ruler and blotter. | |
| US556582A (en) | maier | |
| US108908A (en) | Improvement in dress-shields | |
| US1115432A (en) | Combined blotter-holder and hand-rest. | |
| US994570A (en) | Combined protractor and t-square. | |
| US1372324A (en) | Blank book with ruler | |
| US1059154A (en) | Combined blotter-holder and ruler. | |
| US612690A (en) | Framing-square | |
| US72178A (en) | Swampscot | |
| US744963A (en) | Machinist's protractor. | |
| US972106A (en) | Beam-compass. | |
| US883041A (en) | Try-square. | |
| US114773A (en) | Improvement in elastic type |