. Rubber hand stamps and the manipulation of rubber; a practical treatise on the manufacture of India rubber hand stamps, small articles of India rubber, the hektograph, special inks, cements, and allied subjects . ia rubber stamp. The Post Office manufactures a pad for use withprintersink into whose manufacture the same com-position enters. The ink retainer is a piece of finefelt, one-quarter to one-half an inch thick. This isplaced in the bottom of a shallow steel mould, whereit enters for half its depth into a recess that it ac-curately fits. The comj^osition from old stamps,melted up, is t
. Rubber hand stamps and the manipulation of rubber; a practical treatise on the manufacture of India rubber hand stamps, small articles of India rubber, the hektograph, special inks, cements, and allied subjects . ia rubber stamp. The Post Office manufactures a pad for use withprintersink into whose manufacture the same com-position enters. The ink retainer is a piece of finefelt, one-quarter to one-half an inch thick. This isplaced in the bottom of a shallow steel mould, whereit enters for half its depth into a recess that it ac-curately fits. The comj^osition from old stamps,melted up, is then poured upon and around it, themould being previously oiled. When it is full a AND THE MANIPULATION OF RUBBER, 119 piece of strong manilla paper, of the area of the feltonly, is placed upon the bottom of the glue pad onits centre, which as it lies in the mould is its upper-most part. The paper adheres strongly as the gluehardens. Eventually it is turned out of the mould,and a pad, shown in the cut, is produced. Thedotted lines show the limits of the felt pad. Theglue composition underlies, surrounds and extendsoutwards from the felt portion. It is found thatthe elasticity of the composition makes the pad. Composition Ink Pad. much pleasanter for rapid stamping. The above description gives the clew to makingany stamp of this description. The matrix may beof dental plaster, or of oxychloride of zinc mould may be built up of type of any kind. The composition is so cheap that the stamp canbe made quite thick. This gives it a high degreeof elasticity and adaptability to uneven may be mounted by adherence upon a flat boardor block, provided, if necessary, with handles. If the 120 RUBBER HAND STAMP MAKING. board or block is placed upon the composition whileit is still warm and liquid, as it solidifies the boardand composition will adhere with great tenacity. All moulds or surfaces to which it is desired thatthe melted composition shall not adhere must beoiled
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookidrubberhandstamps01sloa
