This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1910 edition. Excerpt: ... CHAPTER XXIV MOLDING PATTERN WORK IN the preceding chapter I showed some of the work done on what is called a press or squeezer. These machines are used principally for flat and plain patterns. In this chapter I will describe and illustrate the stool and stripping plate work. The important point in ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1910 edition. Excerpt: ... CHAPTER XXIV MOLDING PATTERN WORK IN the preceding chapter I showed some of the work done on what is called a press or squeezer. These machines are used principally for flat and plain patterns. In this chapter I will describe and illustrate the stool and stripping plate work. The important point in machine molding is to obtain a perfect mold that does not need patching. The trouble in molding is that, when you draw away the pattern, the sand in places breaks away and causes patching. The makers of molding-machines have devised different devices to overcome this difficulty. Some have fitted their machines with vibrators, some turn over the mold, but the most favorable method used is that of the stripping plate. Some machines are made so that the pattern is drawn through the stripping plate and some are made that strip the pattern and raise the sand and flask up away from the pattern, which is stationary. On the whole this last method is the most satisfactory, because the stripping plate is the most efficient and certain. The stripping plate can be used for flat or crooked joints, or simple entangled joints. Molding-machine work is very interesting as to the pattern-making part of it, and there is always something to learn. In Fig. 300 is shown a drawing of a piece that is to be made on the molding-machine. I will show how it is made and the way it is worked for a machine that draws the pattern through the stripping plate. A in Fig. 301 is the pattern. The length of the two feet, R R, is the same as the distance from the face of the plate at C C to the top of feet R. B B is the stripping plate. There is another plate, E, which is called the stool plate. There are legs, F F, which are fastened on the top of this plate and made the length...
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Add this copy of Pattern-Making to cart. $18.00, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of Pattern-Making to cart. $28.30, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
