. Railway master mechanic [microform] . Fig. 1—Miles-Bement-Pond Co., Punch and Shear. Colonial Co., Chicago, in fact every tool steel maker anduser has his recommendations and preferences on a sub-ject like this which does not admit of close fine punching such comparisons might be made basedon durability under severe service, but the result wouldbe at best only a tool steel costly out of proportion to its mechanism, but the condition shows that the punch, un-like the lathe, is a completely loaded machine liable to bestalled or broken. They are commonly installed for workof limi
. Railway master mechanic [microform] . Fig. 1—Miles-Bement-Pond Co., Punch and Shear. Colonial Co., Chicago, in fact every tool steel maker anduser has his recommendations and preferences on a sub-ject like this which does not admit of close fine punching such comparisons might be made basedon durability under severe service, but the result wouldbe at best only a tool steel costly out of proportion to its mechanism, but the condition shows that the punch, un-like the lathe, is a completely loaded machine liable to bestalled or broken. They are commonly installed for workof limited strength, for which they are sufficient, but toomuch stiffness can hardly be brought to the tool point inheavy punching and shearing, and the frames take the. Fk ^^■lUftlilli:i!.i,;,:.i k , ; . : : i I,; 1 /1 2—Single Machine with Screw-feed Spacing Table, Long & Allstatter. February, 1904. RAILWAY MASITBR MECHANIC 53 immensely massive forms of which an impression is con-veyed by the words punching bear. These forms aregiven such a large factor of safety that the treachery ofcast iron is covered by their strength, and the forms arelittle liable to the breakage incident to initial strains set
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Keywords: ., bookcentury1800, bookdecade1890, bookidrailwaymaste, bookyear1895
