Patent US-1897-592704
Contains main gas chamber and vacuum chamber; pump & compressor; separation: "... the air or vacuum chamber has no communication whatever with the gas or buoyancy chamber. When the latter chamber is once filled, no gas is withdrawn or condensed in order to ascend or descend." Thus the second chamber can be easily manipulated to change buoyancy for vertical movement.
In practice I provide a hydrogen-gas chamber that will hold ten thousand cubic feet of gas. Into this chamber I put nine thousand cubic feet of gas, leaving one thousand cubic feet of space for expansion. The nine thousand cubic feet of gas give me a buoyancy of six hundred and twelve pounds at sea-level. If my ship complete weighs two hundred pounds, I still have a buoyancy of four hundred and twelve pounds, and I have left a buoyancy of seventy-two pounds. Thus if my air-chamber has space to receive but four hundred cubic feet of air I have air-space enough to overcome four times seventy-two pounds of buoyancy. Then if seventy-two pounds of buoyancy takes us higher than we wish to go, by simply opening the valve in the air-pump we allow air to pass into the air-chamber until we have checked our upward flight. Then the wings can be used to propel the car in any desired direction.
Flapping wings which can act as "side sails" when not moving.
Inventor location (imputed by HistPat): New Orleans, Orleans parish, Louisiana (FIPSloc=22071)
3/10 assigned to William W. Battle, also of New Orleans
Sources
- Patent 592704 document and bibliographic info on espacenet
- Patent 592704 at google patents
- Short's DB
- PTO 244
- Neilson espacenet
| Year filed | 1896 |
|---|---|
| Year granted | 1897 |
| Office | US |
| Patent number | 592704 |
| Inventors | Jacob D. Graybill |
| Inventor country | US |
| Applicant person | |
| Applicant firm | |
| Applicant type | |
| Applicant is inventor? | Yes |
| Original title | Aerial machine |
| English title | Aerial machine |
| Tech fields | LTA, flapping, car, sail, propulsion |
| Filing date | May 26, 1896 |
| Full specification filed date | |
| Application number | |
| Grant date | October 26, 1897 |
| Granted? | Yes |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | Yes |
| Serial number | 593173 |
| Patent agent | Munn & Co. |
| Assigned to | William W. Battle |
| National tech categories | USPC 244/28 |
| IPCs | |
| CPCs | CPC B64B1/00 |
| Family year | 1897 |
| First filing? | No |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | 46574467 |
| INPADOC family ID | |
| Number of text pages | 2 |
| Number of diagram pages | 3 |
| Number of figures | 6 |
| Number of claims | 8 |
