| 267 / | HD | SPRING DEVICES |
| 80 | DF | SPRING PANEL {9} |
| 103 | DF | .~ Spring means spacing loading surface vertically from plane of supporting frame {5} |
| 107 | ![]() | .~.~ By inwardly bowed portion, i.e., "fishmouth" type {1} |
| 108 | DF | .~.~.~> With coiled apex, i.e., "safety pin" type |