Patent information:
| Patent: | Utility 788,120 |
| Patented: | April 25, 1905 |
| Applied: | July 21, 1904 |
| Title: | Press for Plastic Material |
| Description: | Insulator press for forming the bottom shell and threaded pinhole of multipart porcelain insulators (Thomas blue jean seam impression in bottom skirt) |
| Category: | Press |
| Assigned to: | The R. Thomas & Sons Co. |
Patentee Information:
| THOMAS, George W. | East Liverpool, OH |
Class and subclass information:
| Class: | 425 | PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS |
| Subclass: | 89 | WITH INTERPOSED NON-ADHERING WEB OR SHEET TYPE PARTING MEANS; |
| Class: | 425 | PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS |
| Subclass: | 420 | PRESS FORMING APPARATUS HAVING OPPOSED PRESS MEMBERS; Male shaping member and female mold; Including provision to remove entrained gas; |
Known specimens:
| None known |
Drawings:
Page 1 |
Page 2 |