. 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 . vertisements on the edges of their publica-tions, and in many other cases. Our descriptionshall follow as closely as possible the process andmethods used in the United States Post are there termed ^^composition blotters. The composition of which they are made is print-ers roller material. Nine and one-half pounds offine quality glue are soaked in just enough softwater to
. 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 . vertisements on the edges of their publica-tions, and in many other cases. Our descriptionshall follow as closely as possible the process andmethods used in the United States Post are there termed ^^composition blotters. The composition of which they are made is print-ers roller material. Nine and one-half pounds offine quality glue are soaked in just enough softwater to cover it until it is thoroughly is then melted. In the Government Departmenta steam kettle is provided for the purpose. Anordinary glue pot will answer for smaller quantities. 114 RUBBEB HAND STAMP MAKING Wlien melted four and one-half pounds of best molas-ses and seven pounds of glycerine are added^ and thewhole is thoroughly mixed. The formula varies alittle according to the prevailing temperature, lessmolasses being added when the weather is warm, andvice versa. Experience is here the best well mixed it is poured out into tin pailswhose inner walls or sides and bottom have been.
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookidrubberhandstamps01sloa
