Show HOW CIRCULAR SAWS ABE MADE ordinary circular sins are of all sues from six inches to six feet in di ameter the from which they ire shai ed come from steel mills in circular form almost roand if not per factly so 11 e tl tl ing to be done Is to see eliat each plate is a perfect circle V hole is then cut in the center and the teeth are marked around the rim 11 e plate is then t ken to a on which the aie to be cut it is placed upon i pin it such a distance from the machine tint tl e edge comes keneith tie die and tie i tion ef teeth cutting begins fl e steel is cut cold eich tooth being made by one alov all size sand descriptions of dies are necessity necess iry as the bev ie of siw and saw teeth aie miny after alie teeth have bien cut the next i is tint of benit cring which is the most and important i recess in tl e biking of i saw several ire pi iced in the furnace it i time in 1 il owed to remain until alie iroler i led the pi ties must ie taken froin the oven in t plunged into oat of w anlo oil treated by pieces of led hot iron or steel wl ich ire in the it one after moll cr until its an erly heated s each i bece is dro i ed in i fl me leis aiom tl 0 surf ice of the oil and continues to burn until ed by tie liquid with a long iron rod birge glowing plates aie then cautious cauti y slid into tl e vit I 1 eian g the tem lenng depart mei t the saw goes bick to the mini eliop to be hammered him an I 1 straightened lei ly fir grinding I 1 his work is done by hand after fter tl e i late which has been n ore or less warped in tl e i process 1 as been mide perfectly t aann it is place in tie grinding macl me which is i cir nage two wheels which it ind at the ainu time i ress its sides against a MI idly revolving grindstone I 1 he carriage carri ige ia axed in bear ings and is moved back and it the will of the operator it usually takes about two hours to grind i birge he foot sw though tl e time vines to the kind of siw tl at is being mide 11 e next open tiou is tint or which is done with emery wl eels lo 10 polish i birge circular siw tl e i late is to a large wheel orl lange which turns car crying tie saw it tie pressing in emery ball at tachel to a I 1 andle against tl e side hie siw must then be thit is cire must betoken betaken to present one tooth from pi ejecting birther than the or this purpose alie saw is placed in a beining and mide to turn slowly it is then gradually brought in contact with an amer wheel the litter turning ery swiftly until the edge of every tooth the cleel hie edh is next sharpened and submitted to fertl er hammering for tl e purpose of truing ind straightening ind is then cased read for shipment pirt of the siw mak ers business is the renovation of old saws injured in fires it is up tempered over iann and provided w ith i new set of teeth tins article 1 as aeilt only with corn mon circular saws the teeth of are not separate from tl e i late other saws however supplied with inserted teeth of various kinds are roide in birge numbers riese are all latent saws ind cm be sun lied lew sets of filse teeth as olten is necessary V i f ani S ie I 1 1 I 1 ress |