Hardware merchandising September-December 1919 . rn off and the contact area ofthe teeth on the work becomes so great thatenough weight to make the teeth bitecrushes or breaks the blade. In other words,the saw is dull. Another thing: In the acute or positiveangle tooth the leading edge points in thedirection of the cut, its always digging inunder the surface and most likely to negative angle tooth simply scrapes offthe metal and does not actually cut at hook tooth is under the same handicap asthe acute angled tooth. In all unusual teeththe contact area, the friction producing
Hardware merchandising September-December 1919 . rn off and the contact area ofthe teeth on the work becomes so great thatenough weight to make the teeth bitecrushes or breaks the blade. In other words,the saw is dull. Another thing: In the acute or positiveangle tooth the leading edge points in thedirection of the cut, its always digging inunder the surface and most likely to negative angle tooth simply scrapes offthe metal and does not actually cut at hook tooth is under the same handicap asthe acute angled tooth. In all unusual teeththe contact area, the friction producing sur-face, is greater than with the Standard tooth. The easiest, surest way to get economy inHack Saws is to use Starrett Blades with theStarrett Chart. Send for Catalog No. 21 MA THE L. S. STARRETT CO. The Worlds Greatest ToolmakersManufacturers of Hack Saws Unexcelled ATHOL, MASSACHUSETTS NEW YORK LONDON CHICAGO 42-9SH5 November 8, 1919 HARDWARE AND METAL— A dvertising Sectiov By Product Coke Open HearthSteel Billets Open HearthSteel Sheets. Hamilton Pig Iron Steel andIron Bars RailwayFastenings Pole Line Hardware Bolts Nuts & Washers DropForcings
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Keywords: ., bookcentury1900, booksubjectbu, booksubjectimplementsutensilsetc
