Brown, Harold Haven, 1869-1932 · Chicago, Atkinson, Mentzer & company · leaf 195
If the section through the cylinder has been made at anangle of 45 degrees to the axis, the form resulting could be takento represent one piece of a two-part elbow such as may be seenin stovepipes. A three-part elbow is shown at 10 with the sur-faces developed. Using the explanation made for 9,… … 6-|holes THE HELIX, SCREW THREADS AND SUGGESTIONSFOR THE DRAWING OF MACHINE DETAILS. 186 MACHINE DETAILS 187 A screw thread is a form of the inclined plane. If you referto the sketch, 1, on the opposite page, you will see how a pieceof paper may be cut to represent an inclined plane. Wrappedaround…
Drawing · Decoration and ornament
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