Tobacco Documents Online

Y Mr. 1t• ![. Thaoson ` ~ ~~; ' . Juae~7~967 ~ ~ ~ ~ 4 L. !. lfeyer. ' Self Extinguishing Cigaret 8utt =`~ ~ f > A '~ c . .,~ ` :. ..... . .. :i. .. . .. . : Y_. ,~ .~: .r:'f. lef: ..,lteso • ltqar to Yhomson, April 24, 1967, ` `'Pre.ious attempts at developing a built-in'wesns foz estinguiihing a cigaret before the hot coal melts the CA filter and delivers an ;, acrid off-note rere unsuccessful (sea reference saemo). . .. . .,... ;:. . - . r..r :..:.r,„ ,...E... . .~ ~''yt'~.~!. .- ~.a ~; At the advice of Dr. Lsazlo, eeramic" fiber samples were-obtein.d.° from the Carborundun Co„ and 10mr filters Kere prepared from °: same. It vas found upon inserting these ceramic fiber filters ;1 betxeen the tobacco rod and Ca filter that the hot coal did, in °,.;. at least one instance, go out without melting the CA filtez Some off-taste was noted on the final few puffs, but it is not :; clear whether this was due to the heating of the CA filter,.the.` ;ceramic fibera, or , imguritiea fn the ceramic fibers.. k:.'--.._., ...,,- ,. .. ... . . ..._.;~,,, : As a result of this cursory examination of ceramics it is con- cluded cluded that development oF a self extinguishing cigaret is feasible. bTo further trork along these lines is presently planned.' /cb . oc: l. E. Seligmsn T. S. Lnstlo ;Aj