Patent US-1912-1084831
Downward-pointing device with rotatable glass "screen", compass, direction marker, and parallel lines for measuring distance.
The problem: "Although supplied with a compass [the typical airship operator] cannot even in the case of a long cylindrical dirigible, estimate his direction by determining the angle between his compass needle and the longitudinal axis of the ship, because the drift causes his ship to move in a line which does not coincide with its axis. When the navigator attempts to determine his speed, he is driven to estimate, in the roughest possible manner, using as a basis the time it takes any given object below him to go by."
This invention uses the same basis for calculation but allows it to be done more precisely.
Inventor location: Atlantic City, New Jersey
Sources
| Year filed | 1912 |
|---|---|
| Year granted | 1914 |
| Office | US |
| Patent number | 1084831 |
| Inventors | Melvin Vaniman |
| Inventor country | US |
| Applicant person | |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | Speed and Direction Indicator for Airships |
| English title | Speed and Direction Indicator for Airships |
| Tech fields | instrument, compass, LTA, speedometer, method, navigation |
| Filing date | 1912-02-08 |
| Full specification filed date | |
| Application number | |
| Grant date | 1914-01-20 |
| Granted? | 1 |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | 1 |
| Serial number | 676164 |
| Patent agent | Munn & Co. |
| Assigned to | International Aeronautical Construction Company |
| National tech categories | UPSC 356/27, USPC 33/232, USPC 89/41.19, USPC 353/12, USPC 356/150 |
| IPCs | IPC G01P3/36 |
| CPCs | CPC G01P3/36 |
| Family year | |
| First filing? | |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | |
| INPADOC family ID | |
| Number of text pages | 3 |
| Number of diagram pages | 2 |
| Number of figures | 4 |
| Number of claims | 4 |
