. American engineer . of 5egmenfShowing tapers ,.W —H*h. Fig. 11- Exper Gage, f^ Sheef Type of Straight Sectional Expander □;tp For Haf spring ring strated that it is better to make as many sides on the mandrelas the size of the tool will permit. It was found with the oldstyle round mandrel that the segments rode together and wouldnot keep separated, two or more butting together in service; ^S—\For Coif Spring \ -z^^-—H Pros5er Expander Tool Sfeef, Tempered ing Expander for Tubes 2. 2| 4 and22 In. in Diameter. ers doing the duty of threads. Three different sizes of

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. American engineer . of 5egmenfShowing tapers ,.W —H*h. Fig. 11- Exper Gage, f^ Sheef Type of Straight Sectional Expander □;tp For Haf spring ring strated that it is better to make as many sides on the mandrelas the size of the tool will permit. It was found with the oldstyle round mandrel that the segments rode together and wouldnot keep separated, two or more butting together in service; ^S—\For Coif Spring \ -z^^-—H Pros5er Expander Tool Sfeef, Tempered ing Expander for Tubes 2. 2| 4 and22 In. in Diameter. ers doing the duty of threads. Three different sizes of toolsare shown in the table. The mandrel is turned by an airmachine. The manner of setting superlieater tubes is shown in Fig. 17. T

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912