| US Patent: 655,473 
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| Gas Engine | 
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| Patentee: |  |
 | Edward C. Wood (exact or similar names) - Somerville, Middlesex County, MA |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Aug. 09, 1899 |  
| Granted: | Aug. 07, 1900 |  USPTO (New site tip)
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                        Joel Havens
 
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| Description: |  | Claim:
In an explosive-engine, a working cylinder, an explosion-chamber, a passage connecting the two, a check-valve controlling said passage and opening toward the explosion-chamber, a second passage connecting the chamber and cylinder, and a throttling-valve controlling said second passage |  |