GB Patent: GB-190,908,274 
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| Improvements in and relating to die heads of screwing machines
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	        Patentees:
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 | James Virtue (exact or similar names) - Birmingham,  England |  
| Thomas Philip Chatwin (exact or similar names) - Birmingham,  England |  
| Thomas Chatwin (exact or similar names) - Birmingham,  England |  
| James Chatwin (exact or similar names) - Birmingham,  England |  
| Alfred Chatwin (exact or similar names) - Birmingham,  England |  
 
 
 
 
 
 
 
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        Patent Dates:
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| Applied: | 
Apr. 06, 1909 | 
 
| Granted: | 
Mar. 24, 1910 | 
 
 
 
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                        Jeff Joslin Vintage Machinery entry for Thomas Chatwin 
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        Description: |  
| The three inventors were partners in "Thomas Chatwin, Victoria Works, Great Tindal Street, Birmingham, Engineers' Tool Manufacturers". Thomas Philip Chatwin was an engineer and James Virtue was a draughtsman. |  
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