It Will Burn Your Skin at Three Hundred Feet 



AIR cuwTNT anin 



ARRANGEMENT OF CARBON HOLDERS IN THE SPERRY LAMP 



WNGS MADE Of QUARTZ .WHICH. BEING A BAD / 

 CONDUCTCm.HELW TO KfEP »OWf Of 



SILVER COHTACrs.TESWD TWSHtS ; WHKM CONVEY 

 ElEORK CURRENT TO CARBON .& ARE ATTACHED TO 

 COTPER BAR5 SUPfORTED Bi SPRINGS 



AIR CURRENT OUTIEI. 



FEED ROUERS WHICH M«E 



TKEaRBONroHWARDAS 



ITKC0K5M«D, 



_ KKBT _ 



MAEiAJtmcoa.m 

 tm SBxravnuMt.' 



w,...w.w OASIS 



The new Sperry searchlight lamp and its predecessors. The trend in lamp design has been to 

 provide a more intensely luminous source than that of pure carbon. Until recently this was 

 thought impossible, because carbon possesses the highest melting point of any known element. 

 But the newer lights, such as the Beck lamp shown above, and the Sperry lamp, have kept their 

 carbons and metal parts from melting by ingenious means. In the Beck lamp an alcohol spray is 

 used; in the Sperry lamp constant cnarrents of cool air are forced through the carbon supports 



841 



