. Transactions. TIME IN HOURS 17J«. — • + -|-ht-f-+—^|-1. Tl ME IN HOURS commercial carbonizing-materials. 421 D. HiBBARD, Plainfield, N. J.:—Were any of these car-bonizing-materials gaseous ? Mr. Abbott :—None of them were. Mr. Hibbard :—It is regrettable that the gases were notincluded. From some indications gas carbonizing is leadingat present, and I would like to know the performance of gas-eous as compared with solid carbonizers. Mr. Abbott :—Straight gases were not included because thematerials which I used gave up the various gases which arebeing used in gas
. Transactions. TIME IN HOURS 17J«. — • + -|-ht-f-+—^|-1. Tl ME IN HOURS commercial carbonizing-materials. 421 D. HiBBARD, Plainfield, N. J.:—Were any of these car-bonizing-materials gaseous ? Mr. Abbott :—None of them were. Mr. Hibbard :—It is regrettable that the gases were notincluded. From some indications gas carbonizing is leadingat present, and I would like to know the performance of gas-eous as compared with solid carbonizers. Mr. Abbott :—Straight gases were not included because thematerials which I used gave up the various gases which arebeing used in gas carbonizing. In other words, I generatedin the materials the gases which are sometimes used as com-pressed gases. Mr. Hibbard :—It is considered uncertain what gases andwhat amount of them are given out, and the temperatures atwhich they are set free from these materials. I have heard itclaimed that the temperatures at which case-hardening proceedsrapidly are above those at which the gases are given out, andso by the time that the gases are pretty well expe
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
