Patent information:
| Patent: | Utility 2,395,295 |
| Patented: | February 19, 1946 |
| Applied: | June 7, 1944 |
| Title: | Method of Producing Insulators |
| Description: | Improved method of jiggering and plunging |
| Category: | Manufacturing |
| Assigned to: |
Patentee Information:
| ROWLAND, Davidge H. | Sewickley, PA |
Class and subclass information:
| Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| Subclass: | 71 | TREATMENT OF MATERIAL BY VIBRATING, JARRING, OR AGITATING DURING SHAPING; By reciprocating or vibrating mold; |
| Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| Subclass: | 138 | WITH SEVERING, REMOVING MATERIAL FROM PREFORM MECHANICALLY, OR MECHANICALLY SUBDIVIDING WORKPIECE; |
| Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| Subclass: | 296 | MECHANICAL SHAPING OR MOLDING TO FORM OR REFORM SHAPED ARTICLE; Plural sequential shaping or molding steps on same workpiece; One step reshapes portion only of article; |
| Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| Subclass: | 632 | OUTSIDE OF MOLD SINTERING OR VITRIFYING OF SHAPED INORGANIC ARTICLE OR PREFORM; Producing hollow article (e.g., tube, etc.); |
| Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| Subclass: | 678 | OUTSIDE OF MOLD SINTERING OR VITRIFYING OF SHAPED INORGANIC ARTICLE OR PREFORM; With article cutting, punching or grinding; |
| Class: | 425 | PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS |
| Subclass: | 324.1 | DIVERSE DISTINCT TYPE SHAPING MEANS; |
Known specimens:
| None known |
Drawings:
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