+ lordvader88
Yes, the architecture you outline is OK, providing that the three secondary windings of the transformer are not connected together.
But, as not1xor1 says, a 2N3055 will not handle the rectified voltage from the 52V winding, which will be around 71.5V (52 *1.414 -2) off load, as the 2N3055 has a maximum voltage, collector/emitter (VCE) of 60V:
On the other hand, the 71.5v supply would probably drop quite a bit when sourcing current, so if you can ensure sufficient load current you may be able to get away with a 2N3055.
There is another aspect though. Under operating conditions the voltage across the 2N3055 (VCE) will be the voltage from the bridge rectifier minus the stabilized output voltage from the 2N3055 so, unless the 2N3055 is producing a very low output voltage, the VCE may be within the 60 VCE limit. But you would need to ensure that under all operating conditions, especially turn on, that the 2N3055's maximum VCE is not exceeded.
Also, as not1xor1 says, you will need to check the 2N3055 safe operating area, which is quite restrictive
http://www.onsemi.com/pub/Collateral/2N3055-D.PDF