hi my name denis

i have 2 boxford tcl 240
I would like to remove the spindle and put a classic drill bit for and a cylindrical piece to work with a bridle.
i took pictures. someone made this change?
when the old owner bought it they tried to do something, but it is incomplete. see attached photos.
know that it tapers and deltro the (sleeve) the tube to be able to put a support to put a tip.Click image for larger version.  Name: IMG_20210501_135559.jpg  Views: 246  Size: 73.7 KB  ID: 29863Click image for larger version.  Name: IMG_20210501_135559.jpg  Views: 246  Size: 73.7 KB  ID: 29863Click image for larger version.  Name: IMG_20210501_135559.jpg  Views: 246  Size: 73.7 KB  ID: 29863Click image for larger version.  Name: IMG_20210501_135620.jpg  Views: 211  Size: 101.7 KB  ID: 29864Click image for larger version.  Name: IMG_20210501_140217.jpg  Views: 213  Size: 124.8 KB  ID: 29865Click image for larger version.  Name: IMG_20210501_140212.jpg  Views: 203  Size: 87.4 KB  ID: 29866Click image for larger version.  Name: IMG_20210501_135611.jpg  Views: 212  Size: 89.4 KB  ID: 29867