Adam,
According to WHB Smith, the disassembly is the same as for the 1934/35 series of pistols. Check the chamber and remove the magazine. Turn the safety notch up and retract the slide till it is caught by the safety . Tap the end of the barrel rearwards which will free it out of the frame. Carefully release the safety and let the slide come forward off the frame. This is about as far as you should go. Hope this helps.
Dave