| US Patent: 639,160 
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| Explosion Motor | 
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| Patentee: |  |
 | Eugène Fessard (exact or similar names) - Poissy, Yvelines Department, Île-de-France Région, France |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Jan. 31, 1899 |  
| Granted: | Dec. 12, 1899 |  USPTO (New site tip)
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                        Joel Havens
 
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| Description: |  | Claim:
The combination with an exhaust-valve and rod connected thereto, of a lever for operating the valve, free at the valve end and mounted on a universal joint at the other end and a controlling-cam operating upon the lever between its ends and so formed as to give the lever in succession a lateral and a vertical movement. An explosion motor having two cylinders, a shaft, a cam with 8-shaped grooves on as said shaft, exhaust-valves,rods to said valves, mounted at one end, adapted to act upon the valve-rods at the other end and itself acted upon by the cam to cause it to move upwardly and horizontally, to effect the opening of the exhaust-valves alternately and create a perfect cycle of operations. |  |