. Sheet metal workers' manual; a complete, practical instruction book on the sheet metal industry, machinery and tools, and related subjects, including the oxy-acetylen welding and cutting process . , completingthe construction. Construction of a Flaring Pan.—In Figure 191 isshown a perspective view of a flaring pan, the form ofwhich is seen to be the part or frustum of a cone. It isto be made of IC bright tin, according to the followingdimensions: Diameter of top, 6% of bottom, 4% , 2% inches. A No. 12 wire is inclosed in the top edge and the bottomis double seame
. Sheet metal workers' manual; a complete, practical instruction book on the sheet metal industry, machinery and tools, and related subjects, including the oxy-acetylen welding and cutting process . , completingthe construction. Construction of a Flaring Pan.—In Figure 191 isshown a perspective view of a flaring pan, the form ofwhich is seen to be the part or frustum of a cone. It isto be made of IC bright tin, according to the followingdimensions: Diameter of top, 6% of bottom, 4% , 2% inches. A No. 12 wire is inclosed in the top edge and the bottomis double seamed to the body. The body is made in twopieces cut from a 10x14 sheet of tin. The number of SHEET METAL WORK AND PATTERN DRAFTING 231 pieces in which the body of an article in this form is madeI will depend upon its size and the material from whichit is to be constructed. In Figure 192 is shown a half elevation, also a halfsectional view and the method of obtaining the patternfor a flaring pan made in two pieces. In developing thepattern, first draw the center line GH, upon which placethe height of the pan, as shown by AD. Through thesepoints draw lines at right angles to the center line. Qn. Figure 191.—Flaring Pan, Perspective View. either side of the center line GH, from the points AD,place the half diameters AB of the top and CD of thebottom. Then ABCD shows the half elevation, whileAFDE shows the half sectional view. Draw lines con-necting BC and EF and extend them until they meet thecenter line at K, which is the center point with which todescribe the pattern. With CD as radius and D as cen-ter, describe the quarter circle CM, and divide it into anumber of equal spaces, as showTn by the figures 1 to quarter circle represents a one-quarter plan of thebottom of the pan. The pattern is developed as follows: With K as cen-ter and the radii equal to KB and KC, draw the arcsNO and RS as From N draw a line to the apexK, and starting from the point R, space off o
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Keywords: ., bookcentury1900, bookdecade1910, bookidsheetmetalwo, bookyear1918
