n;EOOT !«. EAMBC: : �skelp :\yill form a Ibdk, letc. ; and He explainb itsfiadvantaigeBi H&jthonou^estBa mocHfioatioii;ctf ifdrm,/byow<iiiBh ihe Bteelji^ should hayo wholly ,' or maiuiy^ axidge oivonei&seiinaa f ufisow OHIthe other. l'She patent^oJESce refused tofgrani hiin'» claini for a spirally-foriaed tube,'witiiia:lockfollowingtlie;direetiois ofrthe spiiml;! but gave him "tlae liriiproved method, herein described^ oi making tubes! by rolling the sketp Wittelbngii tudioal ridges and furrows bn^'itsi alterhate,edge'face»,i^aaid la{^|dng th'e saaxie in a spiral direction, tui fecm a lock'iu the mainiier.speciiied." ■ ■ ■■ ■■: ^'^i ^s "'(,■::■ '...■ -^-'a^fii !, ,'Bitchie; began to experimiefntiupons the uiachinain -1870, which was patented toihiui in; 187'2, ior wihdiiig sheet' ffietai mUi!& spiral'tube with <a continuous foMed soam on its outside; Beaides the ipatent for the maobine, be ieoeived one ior the pipe, as a new article of mantifaottireii ■ Soiaeiyears later, Root inrented a mia,phine for making 9iiailarpipiei;(a3Qid both parties fereunow diligently eiigaged in making ^iirHat may be «alled the Bitchie pipe, which faas prored toibe a valuable article rfor many puBposes. The only question; is-jiwJuJfinvented it ? The plaintiSi Inaists that he invented la spiraliyKWcAind tqbe, with'a locking seam, as a new and original ideaiiwith one practioat app,lication,f'aiid can cover all/ tubes whichs corne within that Woad description. The defendant; saysthat thepiatent of Root gives no inEitruetion in the art ofrjmaking pipes of sheet metbl with folded seams, in making ^hich ino fire is used, and none of the particular processes deecribed or ireferred to by Ro(}t are employed;; and that sucha pipe :or tube requiredin- Tention, not only beyond but entirelyapart; from the procasB pf Rootj; The patent-office appearsto have Been oi thisopinion,; �Avery large partof the record consistsofj arguments iii the f orija Of depositions upon the trtie construction of RoaVs specii fication andi itS sufficiency. rThey are able arguments^; buia few lineSjOf ispdci^Cation would have been;w6rth,them,iall. '; �Mr, Eoot testified that after„^e had madeihis invention idt apitlicationto welded, tubes, ifeoocurxedto him that the mode cff' operation might be -appUed! to tubes ot sheet metal, and thathe then dcew the "nlodiucation.clause,jand causedit tb be inserted in thje- specification. ' This he repeated severallimes ��� �
