. Cyclopedia of architecture, carpentry, and building : a general reference work .... ^ toward J A and J E. For this reason is the stretchoutobtained from the point J. PRACTICAL WORKSHOP PROBLEMS. In presenting the 32 j^roblems which follow on sheet-metalwork, practical x^roblems have been selected such as would arise inevery-day shop i)ractice. In this connection we wish to im-press upon the student the necessity ofworking out each and every one of the32 problems. Models should be madefrom stiff cardboard, or, if agreeable tothe proprietor of the shop, the patternscan be develoj)ed at home, t
. Cyclopedia of architecture, carpentry, and building : a general reference work .... ^ toward J A and J E. For this reason is the stretchoutobtained from the point J. PRACTICAL WORKSHOP PROBLEMS. In presenting the 32 j^roblems which follow on sheet-metalwork, practical x^roblems have been selected such as would arise inevery-day shop i)ractice. In this connection we wish to im-press upon the student the necessity ofworking out each and every one of the32 problems. Models should be madefrom stiff cardboard, or, if agreeable tothe proprietor of the shop, the patternscan be develoj)ed at home, then cut outof scrap metal in the shop duringlunch hour, and x^fo^^^^n in this way. Fig. 19. Our first problem is shown in Fig. lU, and is known as a sinkdrainer. It is often the case that the trap under the kitchen sink. 86 SHEET-METAL WORK 27 is choked or blocked, owing to a collection of refuse matter. Toavoid this a sink drainer is used, and is fastened in iDosition throughthe wire loops a^ 5 and c. The refuse matter is poured into thedrainer, from which it is easily remoVed after the fluid has passedthrough the perforations. These drainers may be made of tin or ofblack or galvanized iron, but where a good job is wanted 16-ouncecoiDper should be used. To obtain the pattern for any sized drainer, X^roceed as follows: First draw theplan of the drainer A B 0 in Fig. 20,making A B and B O each two inchesand forming a right angle. Thenusing B as center and A B as radius,draw the arc A C In its proper i^osi-tion above the plan construct the sideelevation, making E D 2 inches high,and draw the line F D. Then willF E D be the side elevation. Dividethe arc A C into equal s^mces as shownby the small figures 1 to 5. For thepattern use F D as radius, and withD in Fig. 21 as center strike the arc1 5. From 1 dra
Size: 1642px × 1522px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksub, booksubjectarchitecture
