GB190818510A - Attachment for Mariners' Compasses. - Google Patents
Attachment for Mariners' Compasses.Info
- Publication number
- GB190818510A GB190818510A GB190818510DA GB190818510A GB 190818510 A GB190818510 A GB 190818510A GB 190818510D A GB190818510D A GB 190818510DA GB 190818510 A GB190818510 A GB 190818510A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- compasses
- prism
- attachment
- compass
- 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
Links
Landscapes
- Magnetic Treatment Devices (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
18,510. Chetwynd, L. W. P., Kelvin & J. White, and Clark, F. W. Sept. 3. [Cognate Application No. 4339, A.D. 1909, dat d Feb. 22.] Compasses, magnetic.-An attachment for mariners' compasses to enclose the steering or bearing prism and protect it, together with the portion of the compass glass below, from deposit of moisture or the like comprises a casing or hood A having an open or transparent base and an open or transparent side I, the base being adapted through a depending rib F and packing-material G to bear lightly on the outer surface of the compass glass H. Means, such as an arm L engaging with an indented segmental strip M, are provided for angularly adjusting the pivoted prism J from outside the casing. Instead of being pivoted, the prism may be rendered adjustable by having projecting pins on its containing frame K engaging in a curled slot in the casing. In another form the whole attachment is rendered rotatable relatively to the compass bowl. Specifications Nos. 18,509 and 20,185, A.D. 1908, are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190818510T | 1908-09-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190818510A true GB190818510A (en) | 1909-07-01 |
Family
ID=32438619
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190818510D Expired GB190818510A (en) | 1908-09-03 | 1908-09-03 | Attachment for Mariners' Compasses. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190818510A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2498768A (en) * | 1950-02-28 | Pelorus having adjustable prism |
-
1908
- 1908-09-03 GB GB190818510D patent/GB190818510A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2498768A (en) * | 1950-02-28 | Pelorus having adjustable prism |
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