Very little information can be found on the Recipro Tool invented by Andrew J. Francis Jr. and patented under USPO number 2467376. Patent filed in 1944 and granted in 1949.
The linear motion magnetic oscillation device was built into a plug-in electric handheld engraving style tool with interchangeable shaped bits.
Other company names associated with this device
- Electro_Mag. Mfg. Co., 315 South Madison Street, Rockford, Illinois.
- S.C.&L. Machine Co., 1121 Fourth Avenue, Rockford, Illinois.