US130036A - Improvement in the construction of compasses - Google Patents
Improvement in the construction of compasses Download PDFInfo
- Publication number
- US130036A US130036A US130036DA US130036A US 130036 A US130036 A US 130036A US 130036D A US130036D A US 130036DA US 130036 A US130036 A US 130036A
- Authority
- US
- United States
- Prior art keywords
- compasses
- construction
- improvement
- legs
- instrument
- 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
- 238000010276 construction Methods 0.000 title description 10
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/16—Compasses, i.e. with a pair of pivoted arms
Definitions
- the object of this invention is to improve the construction of compasses, calipers, &c., so as to make them lighter, neater, and cheaper than heretofore. To this end the invention consists in the construction which I will now proceed to describe.
- the legs of the instrument may be graduated into inches and frac-"
Description
y T. HAGERTY.
mprovement in the Construction of Compasses.
N o.l30,036. Patented July 30,1872.
,un. FIIm-LITHUERIFl/M' mmx/ossMA/zi PHDCESS) THOMAS HAGERTYY, or RICHMOND, VIRGINIA.
IMPROVEMENT IN THE CONSTRUCTION OF COMPASSES.
Specification forming part of Letters Patent No. 130,036, dated July 30, 1872.
To all whom it may concern.-
Be it known that I, THOMAS HAGERTY, of Richmond, in the county of Henrico and State of Virginia, have invented a new and useful Improvement in Compasses, and I do hereby declare the following to be a full and exact description'of the same, reference being had to the accompanying drawing forming part of this specification, in which- Figure 1 represents one of the blanks for the legs of the compasses. Fig. 2 represents said blank bent up to form the leg, and Fig. 3 represents the compasses perfected.
Similar letters of reference in the accompanying drawing denote the same parts.
i The object of this invention is to improve the construction of compasses, calipers, &c., so as to make them lighter, neater, and cheaper than heretofore. To this end the invention consists in the construction which I will now proceed to describe.
Ifirst strike out of sheet metal the blank A, shown in Fig. 1, the same being provided with a perforated circular ear, a, the center of which should come in line with the inner edge of the leg. I then turn the metal on the side m over onto the side n, taking care to make the edges exactly coincide, and I stamp or 'roll themfirmly down together so that the seam will be hardly perceptible, unless by careful examination. The two edges being thus brought together, the ear on projects beyond the curved edge e e in the form of a circular plate, as clearly shown in Fig.2. Both edges being thus made exactlyalike, they are placed together andfirmly riveted, as shown at T, when, having been suitably polished and pointed, and, if preferred, nickel or silver plated, the instrument is ready for use.
I sometimes employ an eyelet or hollow rivet for securing the legs of the compasses together, it being lighter, neater, easier to adjust and tighten when it works loose, and convenient for hanging the instrument upon a peg when not in use. The legs of the instrument may be graduated into inches and frac-"
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US130036A true US130036A (en) | 1872-07-30 |
Family
ID=2199454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US130036D Expired - Lifetime US130036A (en) | Improvement in the construction of compasses |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US130036A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2442136A (en) * | 1944-01-17 | 1948-05-25 | Aloysius B Luther | Magnetic chuck adapter |
-
0
- US US130036D patent/US130036A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2442136A (en) * | 1944-01-17 | 1948-05-25 | Aloysius B Luther | Magnetic chuck adapter |
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