Patent information:
| Patent: | Utility 1,978,627 |
| Patented: | October 30, 1934 |
| Applied: | May 10, 1932 |
| Title: | Vibrating Plunging Machine |
| Description: | Manufacturing method using a vibrating plunger tool to form the underside shape of the insulator without causing stresses in the finished porcelain |
| Category: | Manufacturing |
| Assigned to: | Locke Insulator Corp. |
Patentee Information:
| GOUVERNEUR, Minor F. H. | Baltimore, MD |
Class and subclass information:
| Class: | 425 | PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS |
| Subclass: | 418 | PRESS FORMING APPARATUS HAVING OPPOSED PRESS MEMBERS; Male shaping member and female mold; Means rotating male shaping members; |
| Class: | 425 | PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS |
| Subclass: | 421 | PRESS FORMING APPARATUS HAVING OPPOSED PRESS MEMBERS; Male shaping member and female mold; Including vibrator or tamper; |
Known specimens:
| None known |
Drawings:
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