GB247643A - Improvements in stereotype plate casting boxes - Google Patents
Improvements in stereotype plate casting boxesInfo
- Publication number
- GB247643A GB247643A GB2744024A GB2744024A GB247643A GB 247643 A GB247643 A GB 247643A GB 2744024 A GB2744024 A GB 2744024A GB 2744024 A GB2744024 A GB 2744024A GB 247643 A GB247643 A GB 247643A
- Authority
- GB
- United Kingdom
- Prior art keywords
- matrix
- drag
- core
- cope
- rib
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41D—APPARATUS FOR THE MECHANICAL REPRODUCTION OF PRINTING SURFACES FOR STEREOTYPE PRINTING; SHAPING ELASTIC OR DEFORMABLE MATERIAL TO FORM PRINTING SURFACES
- B41D3/00—Casting stereotype plates; Machines, moulds, or devices therefor
- B41D3/08—Moulds, e.g. horizontal, for casting tubular, i.e. cylindrical, plates
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Printing Plates And Materials Therefor (AREA)
Abstract
247,643. Hart, H., (Duplex Printing Press Co.). Nov. 17, 1924. Stereotype, casting. In a stereotype casting- box for casting tubular plates, of the type having a drag 3, a cope 2, and a core 1, the upper portion 1<b> of the core beyond the plate-forming portion is reduced in diameter. The two parts of the core are connected by a bevelled portion 1<a> the lower edge of which is slightly below the level of shoulders 2a, 3<a> in the cope and drag respectively. The shoulders 2a, 3a are approximately of the thickness of a matrix 4 in depth, and are formed just above the position occupied by the upper edge of the matrix. Metal entering the mould is therefore directed outwardly by the bevelled part 1<a> in order to press the matrix against the drag and cope during the casting- operation, and is prevented by the shoulders 2<a>, 3a from entering behind the matrix. The cope 2 is provided with a vertical rib 2<b>, between which and an inwardly-projecting flange 3<b> on the drag 3 the core is clamped during casting in order to retain it in true axial position. The rib 2<b> also serves to form a slot in the sprue to facilitate removal of the plate from the core. The upper part of the core is bevelled at 1<c> to facilitate pouring the metal into the, mould, and a semi-circular flange 2<c> is formed at the upper end of the cope 2 to act as a shield to direct the metal into the mould. The vertical edges of the matrix are separated by a rib 6 projecting from the inner face of the drag and extending nearly to the flange 3<b>. Flat springs 7 secured to a rib 3<e> on the drag project through an opening therein and engage the edges of the matrix to press the edges apart and cause the matrix to fit closely against the inner walls of the drag and cope. The edges of the matrix are clamped by a bar 5 secured to the core and provided with a groove to receive the rib 6 and recesses to accommodate the ends of the spring 7. Specification 8983/09 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2744024A GB247643A (en) | 1924-11-17 | 1924-11-17 | Improvements in stereotype plate casting boxes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2744024A GB247643A (en) | 1924-11-17 | 1924-11-17 | Improvements in stereotype plate casting boxes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB247643A true GB247643A (en) | 1926-02-17 |
Family
ID=10259623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2744024A Expired GB247643A (en) | 1924-11-17 | 1924-11-17 | Improvements in stereotype plate casting boxes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB247643A (en) |
-
1924
- 1924-11-17 GB GB2744024A patent/GB247643A/en not_active Expired
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