US5096A - Mabinee s compass - Google Patents
Mabinee s compass Download PDFInfo
- Publication number
- US5096A US5096A US5096DA US5096A US 5096 A US5096 A US 5096A US 5096D A US5096D A US 5096DA US 5096 A US5096 A US 5096A
- Authority
- US
- United States
- Prior art keywords
- compass
- mabinee
- colby
- attractions
- hall
- 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
- 229910001369 Brass Inorganic materials 0.000 description 4
- 239000010951 brass Substances 0.000 description 4
- 101700065062 andA Proteins 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
- G01C17/38—Testing, calibrating, or compensating of compasses
Definitions
- my invention consists in providing duplicate or triplicate needlesv ar-y ranged on a line on the face of the card of the compass.
- I support the card by a brass spindle or needle and brace the same by a plate of brass or other metal on the under side of the cards and attach thereto the pivots upon COLBY, of Rochwhich the magnetic needles oscillate.
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Supports Or Holders For Household Use (AREA)
Description
HALL COLBY, vOF ROCHESTER,4 NEW YORK.
, MARINERS COMPASS.
Specification of Letters Patent No. 5,096,v dated May 1, 1847.
To all whom t may concern:
Be it known that I, HALL ester, county of Monroe, and yStateof New York, have invented a new and Improved Mode of Preventing Mariners Compasses from being Eiected by Local and other Iniiuences and Attractions; and I do hereby declare that the following is a full and eX- act description.
The nature of my invention consists in providing duplicate or triplicate needlesv ar-y ranged on a line on the face of the card of the compass.
To enable others skilled in the art to make and use my invention I will proceed to describe its construction and operation.
I support the card by a brass spindle or needle and brace the same by a plate of brass or other metal on the under side of the cards and attach thereto the pivots upon COLBY, of Rochwhich the magnetic needles oscillate. Il
place two needles equally magnetized as lnumberedy l and 3. The concentrating or center needle being equally magnetized I make fast tothe cup as No. 2. By the polar iniiuence of theneedles over each other localk andA other influences and attractions are nearly overcome.
l/Vhat I claim as my invention and desire to secure by Letters Patent is. i
The arrangement in line, of duplicate or triplicate magnetic needles upon the card of the mariners compass by which local and` other influences and attractions are over c'omeinv the manner described.
` HALL COLBY.
lVitnesses T. C. DoNN, J. C. LEWIS.v
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US5096A true US5096A (en) | 1847-05-01 |
Family
ID=2065397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US5096D Expired - Lifetime US5096A (en) | Mabinee s compass |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US5096A (en) |
-
0
- US US5096D patent/US5096A/en not_active Expired - Lifetime
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