Hartford Steam Boiler Inspection and Insurance Company · Hartford, Ct. : Hartford Steam Boiler Inspection and Insurance Co · leaf 121
s distilled off from the fire, the ring-guard is sure to show at itsworst. The moisture or condensible matter from the fire is drawn in between the ringand the head, by capillary attraction, and then the head begins to waste away under thering, as shown in section in Fig. 4. After a time this… … Fro. 3. — The Ring-Guard. of a hand-hole in this way will naturally vary with the conditions, with a new boiler itmay be three or four years. The wasting does not necessarily take place uniformly inall directions: for if the hand-hole leaks a little, it will be found that the deteriorationis most…
Locomotives · Steam-boiler explosions
Internet Archive · Carnegie Library of Pittsburgh · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-303-126.webp)
