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Updated: May 4, 2025
The current also set in motion a toothed wheel of brass. This wheel revolved on its axis with the points, or teeth, passing rapidly in front of a platinum contact point. As each tooth thus came in opposition to the point, a blue spark of electricity would shoot out with a vicious snap; that is if the connection key were pressed down. If the key were not depressed no current flowed.
This extension arm is pivoted at B. Hence, as the armature is alternately attracted when current passes around its electromagnet, and drawn up by the spring on cessation of current, it moves up and down, thus actuating the escapement and causing a rotation of the toothed wheel in the direction of the arrow.
The grain is threshed from the spikes on the threshing floor, an operation which some perform by means of a sledge drawn by a yoke of oxen: this sledge consisting of a wooden platform, studded underneath with flints or iron spikes, on which either the driver rides or some heavy weight is imposed in order, as it is drawn around, to separate the grain from the chaff: others use for this purpose what is called the punic cart, consisting of a series of axle trees, equipped with toothed rollers, on which some one sits and drives the cattle which draw it, as they do in hither Spain and other places.
The Indian ring had closed about it too, and, frightened, it was seeking refuge. Powerful, clawed and toothed for battle, it would not fight unless it was driven into a corner, and then it would fight with ferocity. Henry reflected philosophically that the net might miss the particular fish for which it was cast and yet catch others.
The inner half of the clip or brake is fixed solidly to the block, while the outer half is carried by two screws, geared together by spur-wheels, and so cut that although rotating in opposite directions, their movements are equal and similar. One of the screws carries a light rope-wheel, by which it can be rotated, the motion being communicated to the second screw by the toothed wheels.
These creatures are among the finest burrowers in the world, and can bury themselves in the earth in a few seconds' time; but, being badly toothed, some of them altogether without teeth, they can only feed upon very soft substances.
Fort Laramie stood where the eastern roots of the mountains start in toothed reef and low, premonitory sweep from the level of the plains. Broken chains and spurs edged up toward it. Far beyond, in a faint aerial distance, the soaring solidity of vast ranges hung on the horizon, cloudy crests painted on the sky.
The horns are very remarkable, being suddenly dilated into a flat plate, strongly toothed round the outer margin, and strikingly resembling the horns of the elk, after which it has been named. They are of a yellowish colour, margined with brown, and tipped with black on the three upper teeth.
Anterior legs long and smooth, the pincers overlapping each other at the end, their inner edge rough, scarcely toothed; from before the base of the inside of the movable claw a thickish line of hairs extends about halfway down the hands, which bulge, and are rounded on the inside, but on the outside are straightish or slightly waved, and rather sharply keeled; the second, third, and fourth pairs of legs are somewhat compressed, and terminate in claws with four longish hooks on the inside; posterior pair of legs folded over the back, narrow, with the second joint somewhat bent upwards.
The confusion of weapons was as great as that of garments and peoples. There was not a deadly invention that was not present from wooden daggers, stone hatchets and ivory tridents, to long sabres toothed like saws, slender, and formed of a yielding copper blade.
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