In the screw steamer Azof, the valve is of the equilibrium construction, but the plate which carries the packing on which the top ring rests, is an octagon, and fits into an octagonal recess on the back of the valve.
One form is that known as Prosser's expanding mandrel, in which there are six or eight segments, which are forced out by means of a hexagonal or octagonal wedge, which is forced forward by a screw.
In these respects it forcibly recalls the round-towered churches of Norfolk and Suffolk, most of them surmounted byoctagonal lanterns.
The architecture of this tower may almost be regarded as the perfection of what has been called the decorated English style: it is copiously enriched with pinnacles and statues, and terminates in a beautiful octagonal crown of open stone-work.
In the little octagonal house up there lives a prosperous family, a man, his wife, and ten children.
These buildings were as a general rule of circular or octagonal plan with a tank in the centre of the interior, of size sufficient for the total immersion of candidates.
This is a work of architecture that is held to be truly worthy of the highest praise, since the marble ceiling is divided very beautifully into octagonal compartments.
Many specimens of the familiar type of jug associated with Mason's name, of octagonal shape are found in porcelain.
Earlier jugs by him are rarely marked, and are not of the octagonal form, though the sides are prismatic, and usually seven in number.
Not only on flat surfaces such as the well-known octagonal plates, but in figures and groups such as we have illustrated, these colour effects were employed with considerable dexterity.
The many coloured dessert plates, sometimes of octagonal shape, made by Whieldon in this later mottled manner, in which the surface only is decorated, are well known to collectors.
Some of the octagonal dark blue-printed Caughley earthenware plates are of similar shape to the Oriental porcelain model (illustrated p.
The deep grey octagonal plates by him are loved by connoisseurs as exhibiting his subtlety at its best.
In the middle of the area stands, at present, a mosque, of an octagonal figure, supposed to be built upon the same ground where anciently stood the sanctum sanctorum.
The former is of an octagonal figure, twenty-two yards in diameter.
In small churches plain octagonal or circular piers are frequently used, as in the succeeding style, from which they can only be distinguished by the mouldings.
The piers in country churches are nearly always cylindrical; but there are several examples of massive square or octagonal piers, and also a number of round columns attached, so as to form one pier.
The piers are round or octagonal in village churches, and in large churches are formed by a cluster of cylindrical shafts, not detached as in the preceding period, but closely united.
It isoctagonal in plan, the canted sides being carried on semi-circular arches thrown across the angles.
Enormous octagonal columns carry the main arches and the groining ribs, which all spring from their capitals.
Fornelles has a good church, with a low crocketed spire on an octagonal steeple, brought to a square just below the belfry-stage.
At the west end are remains of the usual octagonal flanking turrets; but the whole front is modernized.
A bold row of corbels is carried round the turret between the octagonal and square stages, as if for the support of a projecting parapet which no longer exists.
The eye is at once caught in looking at this view by a fine Romanesque church with a half-ruined cloister and lofty octagonal steeple, which seems to be absolutely built across and through the walls.
It is octagonal in plan, segmental arches being thrown across the angles of the square base to support its diagonal sides.
There are eight horseshoe arches rising from octagonal columns in each of the arcades, and the whole of them, as well as their capitals, are executed in brick, covered with plaster.
The city has circular towers all round, and churches with two western octagonal steeples.
Instead of terminating directly in a cross, they are surmounted by a lantern frescoed with saints, a second octagonal dome, a ball, and a cross.
Octagonal cupolas supported on thick, sloping bases involuntarily remind one of the cup-and-ball game.
The light fell from above through an octagonaldome of artistically-cut glass.
The lower story of the large octagonal rotunda, designed for the cold bath, was in immediate connection with the lake.
It was an octagonal turret, crowned by a roof in the form of an extinguisher.
The church is, therefore, of the shape of a cross (the centre of which is marked by the Central Tower) with an octagonalbuilding standing near and connected with the northern arm.
The two octagonal towers formed a sort of frame for a roaring waterfall in the background.
From the second octagonal tower another extended lofty wall connected it with a round peel as high as the keep.
They crossed the bridge, passed between the two octagonal towers and entered the extensive courtyard, surrounded by the castle itself; a courtyard broad enough to afford manoevring ground for an army.
A high wall, machicolated at the top, connected this keep with a small octagonal tower, whose twin was placed some distance to the left, leaving an opening between for a wide entrance.
The two towers, which were square at the base, terminated in octagonal belfries, and the angle buttresses supported light two-storied open-work turrets of most graceful design.
In a fragile material like concrete the corners spall off under a compressive load, and the square section will not show up as well as an octagonal or round one.
Another group, namely, E1 to E3, were octagonalin shape, with a short diameter (12 in.
These naves, at their intersection, left anoctagonal space 100 feet in diameter.
The octagonal turrets at each corner still remain standing, while here and there on every side may be seen stacks of iron, the remains of staircases, and portions of the framework composing the galleries.
Another relic of the early structure is the octagonal cimborio erected about the same time as the doorway, i.
The extraordinary octagonal brick steeple might pass as of Russian or Tartar origin.
The central lantern is surmounted by the emblem of nobility, a cock, and is formed by an octagonaltower with a stone dome.
There still remains a small octagonal mosque, and many of the rooms have their original artesonado ceilings.
The Chateau de Queribus, or all that is left of it, a great octagonal thirteenth-century donjon, still guards the route toward Limoux and Carcassonne, at a height of nearly seven hundred metres.
Its 17th century chateau, which escaped destruction, can be reached by crossing the canal over a temporary bridge, leaving on the right a small octagonal chapel of no special interest.
The facade was surmounted by a substantial square tower, flanked by four corner turrets and crowned by an octagonal spire rebuilt in 1868.
Behind the battlements ran a sentry-way, while at the ends of the facade turrets decorated with arcades and surmounted by octagonal spires, served as watch-towers.
In a court which he showed us, he had a raised octagonal fish pond, and in his porch his people were unlading ponies of bales of merchandise.
You have to lean your head very far back to follow up the minarets with your eyes to the top; each is octagonal and tapers slightly to two balconies.
This tower, which was built of marble, in an octagonal form, had on each side a representation of that wind opposite to which it was placed.
These are octagonal in elevation as well as plan and are laid up in flat panels, or gores, which meet at the crown (Fig.
This is, in other words, the familiar chevet vault extended to cover a space of circular or octagonal plan.
Similar flat triangles but with a series of mouldings at the top, are used to support the octagonal lantern of Coutances cathedral (Fig.
As a rule the pendentives were introduced beneath the wall of the clerestory drum which was therefore either of octagonal or circular plan.
But instead of domes, the builders of Saint Ours substituted a hollow octagonal pyramid of stone over each bay.
It is a type of dome admirably suited to its impost since it presents none of the awkward appearances of a circular dome on an octagonal base.
The tower is of octagonal plan externally, and square within, where each of the four walls measures about 14 feet.
The octagonal chamber in the top story of the tower appears to have been restored or rebuilt in Tudor times.
The famed mosque, built by Aurungzebe on the site of a Hindoo temple, is remarkable for its two octagonal minarets, 232 feet above the Ganges.
A pretty octagonal summer-house, with its roof supported by pillars, occupies one of the highest points of the plateau, and commands a superb view of the scenery before described.
This font is raised upon two circular steps, and is octagonal and of blue marble, with the various surfaces of base, stem, and bowl slightly hollowed.
East of this is a piscina with projecting semi-octagonal basin, trefoil head, and ogee hood, and with a small square window above and to the left of it.
Either corner of the choir contains a staircase, and is strengthened by a pair of massive buttresses and crowned by an octagonal turret with a conical stone cap and a finial.
The two at the west end are shown without parapets at the base, and all three are without those sloping spurs which so often connect an octagonal spire with the corners of the tower.
In the middle of the entrance is an octagonal basin, supported on a pedestal and having a shield on each of its sides.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "octagonal" in a variety of sentences. We hope that you will now be able to make sentences using this word.
