204 



THE WORLD'S ADVANCE 



The Stanley X-Ray Apparatus: High Tension Transformer and Switchboard Producing and Controlling 



the Current for the X-Ray Tube. 



half that in height and perhaps a third in 

 thickness. Upon the front of this case 

 are mounted the switchboards of highly 

 polished black glass with their myriad 

 of meters, control knobs and levers, knife 

 switches, and other instruments, all in 

 shining copper. Surmounting the lower 

 cabinet is a gigantic cylinder resembling 

 the familiar induction coil in general 

 appearance. It is from this latter cylin- 

 der that the useful current is obtained. 



While the inventor did not make clear 

 in technical terms just wherein his ap- 

 paratus differs from the modern high fre- 

 quency outfit except in point of size, still, 

 credit must be given him for a truly 

 wonderful system of control which en- 

 ables him to utilize to the fullest extent 

 the possibilities of the oscillatory current, 

 not only in X-ray work, but in the gen- 

 eral practice of electro-therapeutics. The 

 inventor claims for his coil some very 

 broad ranges of frequency and voltage, 

 as well as volume of current admin- 

 istered. 



Proceeding with his explanation of the 



theory upon which his ray is based, Mr. 

 Stanley went on to point out that practi- 

 cally all efforts in the past few years have 

 been directed toward the reduction of 

 exposure and the production of more 

 powerful apparatus in order that the 

 penetrative properties of the X-Ray 

 might be enhanced. The tendency in 

 this direction has led to the evolution of 

 special transformers to deliver a com- 

 paratively heavy current at a moderate 

 voltage to a tube built to stand the added 

 volume with its attendant heat. Mr. 

 Stanley has gone about the problem in a 

 different manner, his theory being that 

 a current of exceedingly high potential 

 and high frequency put through a spe- 

 cially designed tube will give the desired 

 penetration and speed without the danger 

 of burns. Working on this theory, the 

 inventor has experimented, so he states, 

 for the best part of fifteen years and dur- 

 ing the past five years he affirms that 

 his hands and body have been exposed, 

 sometimes for hours at a time, to the 

 most powerful rays from his tubes. A 



