GB778298A - - Google Patents
Info
- Publication number
- GB778298A GB778298A GB778298DA GB778298A GB 778298 A GB778298 A GB 778298A GB 778298D A GB778298D A GB 778298DA GB 778298 A GB778298 A GB 778298A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- ceramic
- barium
- compositions
- differing
- 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.)
- Active
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
- B28B13/022—Feeding several successive layers, optionally of different materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
- B28B13/023—Feeding the moulding material in measured quantities from a container or silo by using a feed box transferring the moulding material from a hopper to the moulding cavities
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/30—Feeding material to presses
- B30B15/302—Feeding material in particulate or plastic state to moulding presses
- B30B15/304—Feeding material in particulate or plastic state to moulding presses by using feed frames or shoes with relative movement with regard to the mould or moulds
- B30B15/306—Feeding material in particulate or plastic state to moulding presses by using feed frames or shoes with relative movement with regard to the mould or moulds for multi-layer articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Insulating Materials (AREA)
Abstract
778,298. Ceramic compositions: compressionmoulding machines. GLOBE-UNION, Inc. Dec. 18, 1953 [Dec. 26, 1952], No. 35305/53. Classes 22 and 87(2). [Also in Group XXXVI] A composite dielectric plate comprises' a plurality of adjacent areas of different ceramic composition which are fired together and are united by the intermingling consequent upon the firing, the areas being arranged side by side and extending without overlapping, through the thickness of the plate. The adjacent areas may be chosen to have differing dielectric constants, differing temperature coefficients of dielectric constant or desirable piezo-electric properties. The composite plate may be produced in the manner shown in Figs. 1 and 2. A filler shoe, having two compartments 12 and 14 which are filled with different respective powdered compositions, is passed over an opening 18 thereby filling the opening with the compositions as shown in Fig. 2. The powder is then compacted between upper and lower punches 22, 24 to form a pellet which is subsequently fired to form a unitary ceramic plate having two regions of differing electrical properties. Fig. 4 (not shown) illustrates a modified filler shoe comprising three compartments whereby a plate having three separate areas may be produced. Materials which may be used in the preparation of the ceramic bodies comprise titanates of barium, calcium, strontium, lead and magnesium, zirconates of barium and magnesium, heavy-grade titanium dioxide, barium carbonate, steatite talc, a mixture of rare-earth oxides prepared from commercial didymium carbonate, and ball clay. Reference has been directed by the Comptroller to Specification 696,185 [Group XXXVI].
Publications (1)
Publication Number | Publication Date |
---|---|
GB778298A true GB778298A (en) |
Family
ID=1751944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB778298D Active GB778298A (en) |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB778298A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2211460A (en) * | 1987-11-19 | 1989-07-05 | Gohei Mizota | Manufacturing method for layerlike multicoloured moulding |
-
0
- GB GB778298D patent/GB778298A/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2211460A (en) * | 1987-11-19 | 1989-07-05 | Gohei Mizota | Manufacturing method for layerlike multicoloured moulding |
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