. The Street railway journal . is applied, it is placed inan electrically-heated oven and kept in a temperature of 195degs. F. for 5 hours. While still hot from the oven, the coilis immediately submerged in a tank of armalac compound for5 hours. It is then taken from the tank, replaced in the ovenand baked for about 2J/2 hours at a temperature of 195 this baking, the coil is covered with two pieces of duck, the canvas having been previously dipped in com-pound and baked for 2l/2 hours. The two layers of duck arecut on a form and are wrapped around the coil, one on the to
. The Street railway journal . is applied, it is placed inan electrically-heated oven and kept in a temperature of 195degs. F. for 5 hours. While still hot from the oven, the coilis immediately submerged in a tank of armalac compound for5 hours. It is then taken from the tank, replaced in the ovenand baked for about 2J/2 hours at a temperature of 195 this baking, the coil is covered with two pieces of duck, the canvas having been previously dipped in com-pound and baked for 2l/2 hours. The two layers of duck arecut on a form and are wrapped around the coil, one on the topand one on the bottom, the twc3 layers overlapping each otherby about 1^4 ins-> so that even if the field is submerged in waterto three-quarters of its thickness there is no joint in the canvaswrappings for the moisture to penetrate. The canvas coversare bound in place with asbestos string. After the coil hasbeen wrapped with the compound-soaked duck it is again placed 1 . ■ ■ -. M P *r ft -a* I i ** * * -. .-■-■ 1.
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License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
