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Updated: July 23, 2025
These sources of injury, however, admit of easy remedy; the top of the boiler may be preserved from external corrosion by covering it with felt upon which is laid sheet lead soldered at every joint so as to be impenetrable to water; the ash pits may be shielded by guard plates which are plates fitting into the ash pits and attached to the boiler by a few bolts, so that when worn they may be removed and new ones substituted, whereby any wear upon the boiler in that part will be prevented; and there will be very little wear upon the bottom of a boiler if it be imbedded in mastic cement laid upon a suitable platform.
So sensitive is this solder that a fire door has been made to shut by holding a lamp some distance beneath the soldered link and holding an open handkerchief between the lamp and link. Though the handkerchief was not charred, hot air enough had reached the metal to fuse the solder and allow the apparatus to start into operation.
As the hot gases may tend to escape too quickly through large tubes, it is well to insert in the upper end of each a small "stop," x a circle of tin with an arc cut away on the bottom side. To encourage the gases to pass up the tubes instead of along the bottom, a ring of metal, y, may be soldered beyond the bottom holes, if an oil or spirit stove is to be used.
One morning I went to seek Herdegen in the armory and there found him stripped of his jerkin, with sleeves turned up; and with him was the Bohemian, striving with an iron file to remove from my brother's arm a gold bracelet which was not merely fastened but soldered round his arm.
And when they were entered within the castle King Pelles knew them; then there was great joy, for they wist well by their coming that they had fulfilled the quest of the Sangreal. Then Eliazar, King Pelles' son, brought to-fore them the broken sword wherewith Joseph was stricken through the thigh. Then Bors set his hand thereto, if that he might have soldered it again; but it would not be.
The window-blinds of this habitation had been replaced by large thick plates of lead, hermetically soldered and kept in by frames of iron clamped in the stone. Moreover, completely to intercept air and light, and thus to guard against decay within and without, the roof had been covered with thick sheets of lead, as well as the vents of the tall chimneys, which had previously been bricked up.
It is unfortunate that he did not consider such cases as the minute teeth, which never cut through the jaw in the ox, or the mammae of male quadrupeds, or the wings of certain beetles, existing under the soldered wing-covers, or the vestiges of the pistil and stamens in various flowers, and many other such cases. Although I greatly admire Prof.
In the present chapter we will assume that the barrels of all the boilers described are made out of solid-drawn seamless copper tubing, which can be bought in all diameters up to 6 inches, and of any one of several thicknesses. Brass tubing is more easily soldered, but not so good to braze, and generally not so strong as copper, other things being equal.
The huge rings by which the fetters were soldered together, and attached to the human body, were, when examined minutely, found to be clenched together by riveting so very thin, that when rubbed with corrosive acid, or patiently ground with a bit of sandstone, the hold of the fetters upon each other might easily be forced asunder, and the purpose of them entirely frustrated.
On the view of each organism with all its separate parts having been specially created, how utterly inexplicable is it that organs bearing the plain stamp of inutility, such as the teeth in the embryonic calf or the shrivelled wings under the soldered wing-covers of many beetles, should so frequently occur.
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