. The Bell System technical journal . her withwhatever fibers clung to it and then rolling the wire on a flat surface. Thesesamples gave an idea of the type of product to be expected and looked sointeresting that a study of equipment and methods was authorized. Itdeveloped that the machine most adaptable for our purpose was the stand-ard single cylinder paper machine in use in the paper making industry. INSULATION OF WIRE WITH PAPER PULP 85 The essentials of this machine are a vat for holding a thin pulp suspensionand a hollow cylinder covered with fine mesh screen immersed in the
. The Bell System technical journal . her withwhatever fibers clung to it and then rolling the wire on a flat surface. Thesesamples gave an idea of the type of product to be expected and looked sointeresting that a study of equipment and methods was authorized. Itdeveloped that the machine most adaptable for our purpose was the stand-ard single cylinder paper machine in use in the paper making industry. INSULATION OF WIRE WITH PAPER PULP 85 The essentials of this machine are a vat for holding a thin pulp suspensionand a hollow cylinder covered with fine mesh screen immersed in the dams at the ends prevent the pulp suspension passing into theinterior of the cylinder. As this cylinder rotates on its axis the water flowsthrough the screen and deposits pulp on its surface. This pulp mat is thenpicked up by an endless felt belt which is brought into contact with thesurface of the cylinder by means of a soft rubber roll which presses it firmlyagainst the pulp mat on the surface of the cylinder. The pulp mat adheres. Fig. 3—Forming end of pulp insulating machine to the felt and together they travel over suction rolls and through squeezerolls where the excess water is removed. The fibers are thus firmly pressedtogether so that a sheet of wet paper is formed. After drying and calender-ing the paper appears in its usual form. The idea of embedding a wire in the sheet as the pulp was deposited onthe cylinder formed the basis of the present development. Usually thepaper machines produce a continuous sheet eight or nine feet wide so thatit became necessary to devise ways and means of producing sheets onlyabout one quarter inch wide to supply the necessary material for insulating
Size: 1560px × 1601px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
