Turning and boring tapers . Figure 18. Thread tool square with center line of Turning and Boring Tapers. have it with almost no trouble, and all guesswork isavoided. In this connection it may not be amiss to offer asuggestion regarding taper fittings for pipes. Standardpipe fittings are yq to the inch or 3^ inch to foot, andfor large pipes this is generally adhered to. In small sizes it is common practice to use straighttaps and taper dies, which has the effect of making thejoint at the outside of fitting only. Calk here Calk here. Makes Tight Jointhere Any kindFitting Derry Collard C
Turning and boring tapers . Figure 18. Thread tool square with center line of Turning and Boring Tapers. have it with almost no trouble, and all guesswork isavoided. In this connection it may not be amiss to offer asuggestion regarding taper fittings for pipes. Standardpipe fittings are yq to the inch or 3^ inch to foot, andfor large pipes this is generally adhered to. In small sizes it is common practice to use straighttaps and taper dies, which has the effect of making thejoint at the outside of fitting only. Calk here Calk here. Makes Tight Jointhere Any kindFitting Derry Collard Co Figure 19. Suggested method of fitting pipes. A method has been proposed which seems to haveseveral good points for all sizes of pipe. The plan is touse a taper tap, but have the pipe thread straight, so asto bring the tearing on the end of pipe. This beingthin will force into a good contact, and also allow a goodchance to calk the fitting around the pipe. The latterapplies especially to large wrought iron fittings. Thisplan is shown in figure 19 as above. 19 One Way of Designating Tapers. As tapers are sometimes given as i in 2 or i in 4,the table below may be of use in reducing them all totapers per foot. The taper in all cases given is thetotal taper between the sides of the piece. Taper of 1 in 2=6 inches to the foot 3=4 —0
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