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    • 1. 发明专利
    • Improvements relating to the pressing of articles from powdered material
    • GB828725A
    • 1960-02-24
    • GB2905056
    • 1956-09-24
    • JOHN WALLEY
    • B28B1/29B28B3/00
    • 828,725. Pressing ceramic ware. WALLEY, J. Dec. 20, 1957 [Sept. 24, 1956], 29050/56. Class 87(2). Articles of flat ware are pressed from a charge of clay dust which, before it is subjected to the pressing operation, has produced on its exposed surface a rough approximation of the contour of the piece which is to be evolved by the subsequent piercing operation. The top die 14 of the press is raised and lowered by a screw or plunger in a crosshead 12 and the bottom die 15 has an ejector 16 operable by a lever 17a. An arm 25 swings on a vertical rod 27 and has at its other end a bearing 24 for the spindle 23 of the contouring tool 20, which comprises a series of spiral blades. The tool is rotated, e.g. through a pulley 32 and, when swung into position, is lowered by a lever 29 which raises and lowers the arm 25. The tool may be mounted on a screw and run down it by gravity. Alternatively the lower die may be rotated relatively to the tool. The moving die, ejector and contouring tool may all be operated from the main driving gear.
    • 7. 发明专利
    • Improvements in and relating to machines for the towing of clay-ware articles
    • GB652965A
    • 1951-05-02
    • GB2635448
    • 1948-10-09
    • JOHN WALLEYJOHN ARTHUR JOHNSON
    • B28B11/18
    • 652,965. Polishing clayware articles. WALLEY, J., and JOHNSON, J. A. Oct. 9. 1948, No. 26354. [Class 60] A machine for towing or polishing clayware articles comprises a towing element 43 of a flexible nature in the form of a strip or bar the edge of which is shaped to the contour of the article 16 and having a split centrally of its length, a head to support the article, means for bringing the article and the element into contact and means for creating relative rotation between them. The element is supported on a dovetailed slide from a shaft 20 slidably mounted in brackets 23, 24 and connected by links 26, 30 to a cam which presses the element into contact with the article. The support 15 has cushioning members 17 shaped to facilitate centering of the article and is secured to a shaft 11 rotated continuously or intermittently. The central split divides the element into two parts which flex in opposite directions during the relative rotation. The periphery of the ware is towed by a number of blocks 71 held by strips in dovetailed holders 73 on the ends of levers 61. These elements may not all be of the same shape ; e.g. if four equally spaced elements are used, one diametrically opposed pair may have a groove 75 while the other pair is formed to provide a greater area of contact with the underside of the periphery. The levers 61, which are spring- loaded and pivoted at 62, carry spring- loaded rollers 63 in contact with a cam 47 slidably mounted on the shaft 20 and connected by links 50, 53 with a second cam which may be mounted on the same shaft as the first cam and which is designed to bring the elements 71 into contact with the ware to centre the latter prior to its engagement with the element 43. All of the elements are of rubber or the like provided with an abrasive facing or a material such as flannel which will pickup clay particles and acquire abrasive properties. The machine may be equipped with a conveyer or an intermittently rotated carrier to feed the machine with articles, and, after towing, to carry the articles to a position in which they can be cleaned by air blast and suction. The support 15 may be a vacuum chuck.