CW wrote that "The slots are for bolts so the part can be adjusted".
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The slots could also be for lathe 'dogs' to keep metal work held between
centers from slipping. The dogs are basically a clamp fastened around
the work with a right angled tail that fits in the slot and acts as a
drive. The concept never caught on for woodturning although AMT tried
to sell them to woodturners at one time. They were more dangerous than
three jaw machinist chucks and just as inefficient.

As CW suggested, later you might want to sharpen the tips of the bolts
to act as a large threaded-on spur drive, even as an eccentric drive.
Maybe not. Whatever, they are probably heavy and good quality.


Turn to Safety, Arch
Fortiter


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