The picture of the nameplate is a little washed out from light. Does that tag say type "CU"? It's also odd that the tag tells what leads to change for rotation, but not for using either 110 or 220 volts??? There are a lot of different configurations for these old Westinghouse motors. My ARS repulsive motor did not have a shorting mechanism. Maybe that's the difference between a type AR and ARS??? Not sure, but interesting none the less.
So far, I have not been able to locate any info on a type "CU" Westinghouse motor, but I am interested in these older devices and will continue to look when I have time.
In the end, if you do end up replacing the motor, you may want to change your pulley size if you want to keep the speeds the same since this is a 1140 RPM motor. I had to replace the motor on my South Bend a few months back and found a great deal on a 1-1/2 HP at Surplus Center. Shipping seems high but the price was dirt cheap and it is a very nice motor. So, overall, the price was very good for what I got.
Good luck,
Ted