US Patent: 655,473 
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| Gas Engine
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	        Patentee:
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 | Edward C. Wood (exact or similar names) - Somerville, Middlesex County, MA |  
 
 
 
 
 
| Manufacturer: |  
| Not known to have been produced |  
 
 
 
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        Patent Dates:
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| Applied: | 
Aug. 09, 1899 | 
 
| Granted: | 
Aug. 07, 1900 | 
 
 
 
USPTO (New site tip) Google Patents 
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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 |  
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