The AMT Model 4030 5-Speed Drill Press was sold by the 
American Machine & Tool Company in the late 1960's and 
early 1970's.   It is a 10" bench drill press with a 
JT#2-1/2 taper.  That's not a misprint!  The measurements 
of the taper are between JT#2 and JT#3 as follows:

JT#        Large Dia    Small Dia    Length
#2            .5590"        .4876"        .8750"
#2short     .5488"        .4876"        .7500"
#2-1/2      .677"          .625"         1.055"  << AMT 4030
#3            .8100"        .7461"       1.2188