| US Patent: 2,646,685 
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| Shaft vibrator | 
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| Patentee: |  |
 | Henry E. Willitts (exact or similar names) - Smithville, NJ |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Sep. 14, 1950 |  
| Granted: | Jul. 28, 1953 |  USPTO (New site tip)
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                        Jeff Joslin
 Vintage Machinery entry for H. B. Smith Machine Co.
 
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| Description: |  | "My improved vibrator is suitable for use wherever it is desired to impart a reciprocatory motion to a rotating shaft, but it is particularly adapted for the reciprocation of the rotating abrasive drums or rollers of sanding machines." |  |