Patent information:
| Patent: | Utility 1,567,027 |
| Patented: | December 29, 1925 |
| Applied: | October 10, 1923 |
| Title: | Insulator Threading Machine |
| Description: | Machine to form threads in plastic clay |
| Category: | Press |
| Assigned to: | The Porcelain Insulator Corp. |
Patentee Information:
Class and subclass information:
| Class: | 425 | PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS |
| Subclass: | 267 | POTTERY WHEEL TYPE SUPPORT AND PROFILE; Rotatable profile tool; |
| Class: | 425 | PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS |
| Subclass: | 459 | PROFILE, JIGGER TOOL OR POTTER'S WHEEL PER SE; |
| Class: | 470 | |
| Subclass: | 181 | |
Known specimens:
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Drawings:
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