OCR Text |
Show I Bell Ben Mabufactu Manufactui Manufactuio ManufactuiThe ManufactuiaThe o I IThe The metal fromhich from \ which \\hich hich \ bells bolls b lls are usu usually usually usually ally made ( by founding ) is an alloi alloicalled allo } , icalled composedI called bell inctil met'll metll metal ' , commonly composed composedof I of SO S0 parts of copper cooper and 20 of tinThe tin tinI tinThe I The he proportion of tin . varies aries caries , , however howeverfrom , , trom from one onethlid thhd thh d to one fifth of the theHeight thewelglit Height \ eIght of the copper cOPIler coper [ , , according to thesound the thesound thesound sound required , , tlie the size of the bell be11 andthe and andthe the Impulse irnpul'3c irnpul3c ' to be given ' The 'rbe rbe clearnessand clearness clearnessand clearnessand and richness of tho the tone depends dcpends upon uponthe uponthe tlIe the metal used tlie the perfection of itsc'istine Its Itscistinj I Ic'lstlnb c'lstlnb clstlnb c'istine cistine ' ' and also upon Its shape , It bay baylag havIng ling lag been ' ) shown hown by i 1 z ' number of experl expert expertmeats experlmcnts experimeats mcnts meats tint t1l'1t t1l1t thzt ' the \ well ell hno\\ hno known hnon \ n shipe sh'lpe shlpe shape ' with witha * ' a thick tInck lip is tlie tile the iJe bcbt best t adapted to give a perfect sound ' the 'lhe lhe depth of ot the thetOile thetone thetone tOile tone proportionto of a bell inciciscs inciczses Inc1 ( 1ses ' in proportion to its SI suc size , C |