US21020A - Improved combination of the needle and sun-dial to ascertain time - Google Patents
Improved combination of the needle and sun-dial to ascertain time Download PDFInfo
- Publication number
- US21020A US21020A US21020DA US21020A US 21020 A US21020 A US 21020A US 21020D A US21020D A US 21020DA US 21020 A US21020 A US 21020A
- Authority
- US
- United States
- Prior art keywords
- dial
- needle
- sun
- improved combination
- time
- 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
- 241001247287 Pentalinon luteum Species 0.000 title description 10
- 239000011796 hollow space material Substances 0.000 description 8
- 229910001369 Brass Inorganic materials 0.000 description 4
- 239000010951 brass Substances 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 210000000282 Nails Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000000284 resting Effects 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
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B49/00—Time-pieces using the position of the sun, moon or stars
- G04B49/02—Sundials
Definitions
- Figure 1 represents the case of a watch, made of wood; (3, the magnet, resting upon a balancing-pin in the center of hollow space; B, the hollow space; A, the surface for dial to rest upon; Fig. 2, the plate or dial, A, the hand placed upon dial, with hinges,- so as to fold up and carryin pocket 5 B,the open space, through which is seen the magnet-needle to get the point of compass.
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Treatment Devices (AREA)
Description
C. R. M. POHLE.
Sun Dial Pocket Watch. No. 21,020. Patented July 27,- 1858.
Starts Earha t @rricnt IMPROVED COMBINATION OF THE NEEDLE AND SUN-DIAL T0 ASCERTAIN TIME.
Specification forming part of Letters Patent No. 21,020, dated July 27, 1858.
To all whom it may concern I Be it known that I, CHARLES R. M. Format, of the city of Richmond, in the county of Henrico and State of Virginia, have invented a new and useful Improvement, being a Sun-Dial Pocket-Watch for the Purpose of Telling the Time of Day by the Sun; and I do hereby declare that the following is a full and exact description, reference being had to the drawin gs.
Figure 1 represents the case of a watch, made of wood; (3, the magnet, resting upon a balancing-pin in the center of hollow space; B, the hollow space; A, the surface for dial to rest upon; Fig. 2, the plate or dial, A, the hand placed upon dial, with hinges,- so as to fold up and carryin pocket 5 B,the open space, through which is seen the magnet-needle to get the point of compass.
To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.
After getting the dimensions of dial, if to be made of wood, I groove out a hollow space sufficient for magnet-needle to revolve, and if made of brass, copper, gold, or silver I construct a mold to cast it. Then I place a pin in center of hollow space for magnet-needle to rest and revolve upon. Then I construct the face or dial, Fig. 2, by a stamp prepared to make the impression upon brass or other metals, above named, which dial is then placed upon case, Fig. 1, letter A being the place for dial to rest upon, and flastened by small screws or nails. The watch is then held as the needle directs, always pointing north and south, which is seen through the open space, (letter B, Fig. 2.) Then, when held in line with needle from the point of arrow, with the hand (letter A) raised to a perpendicular position. on dial, the shade from hand (letter A) gives the time.
I do not claim as my invention the magnetneedle; nor do I claim as my invention the sundial.
What I claim as my invention, and desire to secure by Letters Patent, is
Combining the magnetic needle with the sundial, so thatthe point of compassis at all times at hand, and thereby the time of day ascertained from the dial by holdingthe dial horizontal and due north and south.
CHARLES R. M. POHLE.
Attest:
JAMES T. SUTTON, J r., W. STAGG.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US21020A true US21020A (en) | 1858-07-27 |
Family
ID=2086427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US21020D Expired - Lifetime US21020A (en) | Improved combination of the needle and sun-dial to ascertain time |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US21020A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100188446A1 (en) * | 2005-10-11 | 2010-07-29 | Silverbrook Research Pty Ltd | Inkjet printer employing disposable sheet for printhead maintenance |
| US20150232846A1 (en) * | 2013-08-16 | 2015-08-20 | Rana Therapeutics, Inc. | Pseudocircularization oligonucleotides for modulating rna |
| USD747981S1 (en) * | 2013-07-16 | 2016-01-26 | Kelsi A. Vande Velden | Watch |
-
0
- US US21020D patent/US21020A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100188446A1 (en) * | 2005-10-11 | 2010-07-29 | Silverbrook Research Pty Ltd | Inkjet printer employing disposable sheet for printhead maintenance |
| USD747981S1 (en) * | 2013-07-16 | 2016-01-26 | Kelsi A. Vande Velden | Watch |
| US20150232846A1 (en) * | 2013-08-16 | 2015-08-20 | Rana Therapeutics, Inc. | Pseudocircularization oligonucleotides for modulating rna |
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