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wire, but not so large as to suffer the spring to pass through it. By this means the end ƒ of the spring is prevented from moving during the motion of the hook and circular wire, and the other end re-acting against the hook, has a constant tendency to keep it in the situation represented in the figure, and consequently resists in some degree any force tending to draw the hook round the centre O.

From the above description it is easy to conceive, that, by means of the spring e ef, the bearing rein C is constantly drawn back with a certain degree of force, at the same time allowing it a proper motion or play. Thus a freedom is given to the motion of the horse's head similar to that which is given by the hand of a rider.

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In place of the worm spring, a spiral or other spring or springs may be made use of in the construction of my improved hook.

In witness whereof, &c.

Specification of the Patent granted to Mr. THOMAS CLATWORTHY, of Winsford, in the County of Somerset, Sheep Shears-maker, and JOHN CLATWORTHY, of the same Place, Sheep Shears-maker; for Shears on an improved Construction for shearing Sheep, applicable to other Purposes. Dated March 1, 1809.

To all

With an Engraving.

O all to whom these presents shall come, &c. NOW KNOW YE, that in compliance with the said proviso, we the said Thomas Clatworthy and John Clatworthy do hereby declare, that our said invention is described and ascertained in and by the drawings in the margin hereof,

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and in manner following; that is to say: Our new invented part of the said shears is in the bow, which we make a double bow, and is made in the following manWe make the bow, before it is turned, about nine or ten inches long between A A, Fig. 3, (Plate II.) but we do not confine ourselves to an inch, or an inch and a half; then we turn the bow double in the middle, as will clearly be seen by referring to Fig. 4. We then bring the bow straight, as is shewn in Fig. 5, leaving a snout in the middle of the bow. We make the length of the snout about an inch, or an inch and a half, but we do not confine ourselves exactly to length. B represents the snout.

Fig. 6 represents the bow in its proper shape. When the bow is turned in shape, the hinder part of the bow must be held in a vice, and the snout twisted, the top edge of the snout lying to C and the under edge lying to D. If the bow should be weak, or injured in turning, we sonie times put a small rivet in the snout, as will be seen by the cross V in snout B, Fig. 5.

In witness whereof, &c.

Description of an improved Cock, for drawing off two Kinds of Liquids.

Invented by Mr. JAMES PHOENIX, of Liverpool.

Communicated by the Inventor.

GENTLEMEN,

With an Engraving,

THE annexed rough sketch is of an improved cock, for the purpose of drawing off any two different fluids or gasses, which may be wanted to be brought together for VOL. XV. SECOND SERIES.

D

sundry

sundry purposes without being connected; such as spirits of wine and water, or any other whose nature is such that it will not be injured in passing over a small surface in common with another.

Fig. 7, (Plate II.) is a pipe bored in the common way, with the cylinder turned to let out a blue fluid, for distinction, which passing along B comes down the pipe A without being in any way connected with the other fluid (say green) in C.

Fig. 8 the cylinder of the cock, in the position of letting out the green fluid, by simply turning the point D half a circle.

Fig. 9 in a stationary position, when neither of the fluids are wanting to be drawn off.

I am, Gentlemen,

Yours, &c.

JAMES PHOENIX.

Improvement on the Spirit-Level. Communicated by
Correspondent, in a Letter to the Editors.

GENTLEMEN,

THE

HE progressive improvements in the agricultural system of this country have given rise to the inventions of various instruments, and greatly increased the use of others, for the purpose of either more easily or more effectually performing the business of husbandry: of this latter kind is the level, so essential in the operations of draining marshy ground, and irrigating pasture and meadow lands. The two most desirable qualities in this instrument are, ease in its application, and certainty in its effects;

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