https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=54654&pn=731,736 Improvements in or Relating To Toggle Actuated Hand Appliances Patentee: Edgar Dale Ball - Horsley Woodhouse, near Derby England Granted:1955-06-15

Modification of the parallel jaw toggle locking clamp in patent GB-576142. In this modification, the size adjusting screw is "in compression," and no distinct provision for release is described. Both patents are cited on the SPEETOG PLIER CLAMP.
This is one of 85,328 patents currently in the database at datamp.org

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