Patent for detachable blade connecting device for tools, the importance of which lies in the fact that this tool provides "simple and efficient means for detachably supporting interchangeable blades which may be quickly removed and replaced" (lines 16-19).
Patent for improvements to the knockdown frame for easy setup and take down and for supporting a block and tackle. This invention also provides a device for locking the fall rope of a block and tackle after the load is raised.
This dialog allows you to filter your current search.
Each of the Months listed note their name and the number of records that will be limited down to if you choose that option.
This dialog allows you to filter your current search.
Each of the Days listed note their name and the number of records that will be limited down to if you choose that option.