Image from page 109 of "The manual training school, comprising a full statement of its aims, methods, and results, with figured drawings of shop exercises in woods and metals" (1906)
Identifier: manualtrainingsc00wood
Authors: Woodward, Calvin Milton, 1837-1914. [from old catalog]
Subjects: Manual training. [from old catalog]
Publisher: Boston, D. C. Heath & co.
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress
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Fig. 83. referred to the lecture on The Care of the Fire, which comesa few pages farther on. The operation of scarfing preparesthe two ends which are to be united so as to have a single sur-face of contact, which should be nearly a plane oblique to theaxes of the ends. A shoulder rarely welds, and hence is asource of weakness. Several attempts may be necessary to 96 THE SECOND, OR MIDDLE YEAR. [Chap. m. make the first weld. The third link should be well done. Thewelding of the two ends of one piece is much easier than thewelding of two separate pieces. If^o. 16. (Fig. 84.) Ribbed handle. Stock, a % rod, about30 long. The rod is bent back and forth hot, till it is fourfold.
Text Appearing After Image:
Fig. 84. the cross-section being four tangent circles whose centers are atthe vertices of a square; then the ends are welded, embracing theparts uniformly. Tlie bundle is heated to a red heat, and the rods bent out by upsetting thebundle. Then again at a proper heat^Avhile one end is held in a vise, theother end is turned 270°. No. 17. [Fig. 85.) Welded eye.Stock, I round rod. As this is pre-liminary to No. 18, the free end shouldbe long enough for the complete hook.About two inches of the end is drawnout to nearly four inches, bent round,and wielded to the shoulder on thebody of the rod. The danger ofburning is so great that one shouldaim at | in thickness instead of ^^as the drawing shows. The exerciseis not an easy one. No. 18. (Fig. 86.) Chain hook.The stock is furnished by No. 17.The shaft just below the eye is to beslightly reduced. The drawing shows the point of the hook a
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Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.
Image from page 109 of "The manual training school, comprising a full statement of its aims, methods, and results, with figured drawings of shop exercises in woods and metals" (1906)
Identifier: manualtrainingsc00wood
Authors: Woodward, Calvin Milton, 1837-1914. [from old catalog]
Subjects: Manual training. [from old catalog]
Publisher: Boston, D. C. Heath & co.
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress
View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.
Text Appearing Before Image:
Fig. 83. referred to the lecture on The Care of the Fire, which comesa few pages farther on. The operation of scarfing preparesthe two ends which are to be united so as to have a single sur-face of contact, which should be nearly a plane oblique to theaxes of the ends. A shoulder rarely welds, and hence is asource of weakness. Several attempts may be necessary to 96 THE SECOND, OR MIDDLE YEAR. [Chap. m. make the first weld. The third link should be well done. Thewelding of the two ends of one piece is much easier than thewelding of two separate pieces. If^o. 16. (Fig. 84.) Ribbed handle. Stock, a % rod, about30 long. The rod is bent back and forth hot, till it is fourfold.
Text Appearing After Image:
Fig. 84. the cross-section being four tangent circles whose centers are atthe vertices of a square; then the ends are welded, embracing theparts uniformly. Tlie bundle is heated to a red heat, and the rods bent out by upsetting thebundle. Then again at a proper heat^Avhile one end is held in a vise, theother end is turned 270°. No. 17. [Fig. 85.) Welded eye.Stock, I round rod. As this is pre-liminary to No. 18, the free end shouldbe long enough for the complete hook.About two inches of the end is drawnout to nearly four inches, bent round,and wielded to the shoulder on thebody of the rod. The danger ofburning is so great that one shouldaim at | in thickness instead of ^^as the drawing shows. The exerciseis not an easy one. No. 18. (Fig. 86.) Chain hook.The stock is furnished by No. 17.The shaft just below the eye is to beslightly reduced. The drawing shows the point of the hook a
Note About Images
Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.