1. 
   Quill drive
   A quill drive is a mechanism that allows a drive shaft to shift its position (either axially, radially, or both) relative to its driving shaft. It consists of a hollow driving shaft (the quill) with a driven shaft inside it. The two are connected in some fashion which permits the required motion. O...
   Found op http://en.wikipedia.org/wiki/Quill_drive
   
   
2. 
   quill drive
   a drive comprising a hollow shaft round the axle, supported by the motor and connected to the driving wheels by a flexible system
   Found op http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=811-15-13
   
   
3. 
   Quill Drive
   Traction motor drive system where the motor drives the wheel through a set of rubber bushed suspension links. The links are fitted to either end of a hollow tube (the quill) surrounding the axle. One set of links is attached to the output drive of the motor, the other to the wheel. The system reduce...
   Found op http://www.railway-technical.com/newglos.shtml
   
   

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