In the third class, vegetable parchment and vulcanised board are the most familiar.
Paper pulp converted into modified products by chemical treatment, such as vulcanised board, viscoid, etc.
The Perreaux Pump Valve is made of vulcanised india rubber, and is of the form of the valves in the human body.
Flat rings or "washers" of vulcanised rubber are also excellent for still heads, &c.
The glass tubes are connected with vulcanised india rubber, as shown in the above plate.
In use, a flat, endless band of vulcanised india rubber is placed between the two rims, which are then held air-tight together by means of small, iron clamps.
Among the many applications of vulcanised india rubber those connected with its elasticity and its enormous contractile power when extended are particularly striking.
Of late years vulcanised or mineralised rubber (coloured) has been used for this purpose, and being spread on the outside of the stuff instead of the inside forms an ornamental and thoroughly waterproof material.
The discovery of the singular action of sulphur and the mineral sulphides on caoutchouc was made by Mr Charles Goodyear, of New York, in 1842, at which date the manufacture of vulcanised india rubber may be said to have commenced.
In fact, it is the exclusive property of vulcanised caoutchouc to be able to retain any form impressed upon it, and to return to that form on the removal of any disturbing force which has been brought to act upon it.
In 1843 Mr Thomas Hancock patented a process for vulcanised india rubber in these countries, founded on that of Mr Goodyear.
The advantages possessed by the product are that it possesses no unpleasant odour, nor does the sulphur effloresce on its surface, as in ordinary vulcanised india rubber.
Gutta percha andvulcanised india rubber are now applied to many of the purposes formerly exclusively occupied by catgut.
From common adhesive plaster spread on buckskin, amadou, or vulcanised india rubber, cut into pieces, and a circular hole corresponding to the size of the corn punched in each.
To prevent the noise of doors slamming, a small piece of vulcanised india rubber, cork, or leather may be placed so as to receive the shock.
Kennedy was digging into the wall with a bill file at the place where he had buried the little vulcanised disc.
In it he placed a round disc of vulcanised rubber, with insulated wires leading down back of the baseboard, then out underneath it, and under the carpet.
To the back of the reflector Craig attached two other flexible wires which led to a couple of dry cells and a cylinder with a broadened end, made of vulcanised rubber.
To obtain a reasonably permanent vulcanised product, the vulcanisation would not be carried further than to give a figure of 100 kilos.
It is interesting to compare the physical properties of raw rubber with that vulcanised with sulphur.
It must also be remembered that a breaking strain of 150 kilos is not permanent with vulcanised rubber, for reasons which will be explained later.
From the vulcanised sheet so obtained the rings for testing are cut (45 mm.
We have already explained that the properties of vulcanised rubber are dependent, to some extent, on the specific nature of the raw rubber, or what De Vries terms the "inner qualities.
A very large number of tests on vulcanised specimens of plantation rubber have been carried out.
The thick sheet is then roughly cut to shape and vulcanised in a mould by heating in steam under pressure.
Thus, two samples vulcanised satisfactorily when mixed with sulphur only, but one of them gave unsatisfactory results in the presence of litharge.
The moulds are vulcanised in an oil bath, or oven of some description, in which a constant temperature is maintained.
The testing of vulcanised rubber has been treated in such detail in the recent works of Whitby[39] and De Vries[40] that a few special points only will be dealt with here.
In any case, the figures forvulcanised rubber are much in excess of those for raw crepe rubber.
The latter was gradually absorbed and "dissolved" in the rubber, and the heat of the bath caused the dissolved sulphur to combine with the rubber to produce vulcanised rubber.
Consequently, tests should also be made, when practicable, with vulcanised rubber containing other ingredients in addition to sulphur.
More danger is to be apprehended from thevulcanised rubber for artificial teeth; and, according to Dr.
The circular bandages of vulcanised india-rubber with a pad in the centre are nowise to be recommended.
Vulcanised or mineralised india-rubber is the material usually employed by Colonel Fosberry.
This strand is tinned and insulated with vulcanised india rubber to a diameter of .
Siemens in the cables manufactured by them for the Austrian government in 1866, and is to some extent still employed, though Hooper's material or vulcanised india rubber, has been found to be more suitable.
The air-pipes are in lengths of 45 feet and 30 feet, made of vulcanised india-rubber with a galvanised iron wire imbedded; this protects from corrosion, and allows the air to pass through the pipes with less friction.
In some of Siemens's cables, vulcanised india rubber replaces the gutta percha insulation.
The interior of this vulcanised gutta percha tube is coated with a thin layer of sulphide of copper, which coating is obtained by leaving a bare copper wire for some time in connection with the above-mentioned tube.
Immediately under the bulb was placed my naked hand resting on a photographic slide containing a sensitive bromide plate covered with a plate of vulcanised fibre.
The glass tube is packed with vulcanised india-rubber, which checks vibration from concussion; but does not hold it rigidly, or prevent expansion.
They are packed with vulcanised caoutchouc, in order that (by this, and by a peculiar strength of glass tube) guns may be fired near these instruments without causing injury to them by ordinary concussion.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "vulcanised" in a variety of sentences. We hope that you will now be able to make sentences using this word.
