Specification of the Patent granted to WILLIAM TYROR, of Liverpool, Lancashire, Coach-maker; for certain Improvements in the Construction of Pumps, and in the Machinery for working the same.

Dated March 13, 1819.

With an Engraving.

To all to whom these presents shall come, &c,

NOW KNOW YE, that in compliance with the said proviso, I the said William Tyror do hereby declare that my said invention is fully described and ascertained by the drawings in the margin of these presents, and by the following description thereof; that is to say: My invention of certain improvements in the construction of pumps, and in the machinery for working the same, consists in four brass chambers marked P PP in the drawing, Fig. 5, (Plate IV.) joined together by means of breech pieces with screws, and soldered across the joints; these breech pieces, marked Q Q in the drawing, Fig. 5, being cast of brass or any other suitable metal; when these are complete together, and that marked Pp in the drawing, Fig. 5, being placed upon the breech piece

VOL. XXXV.-SECOND SERIES. K marked

marked in the drawing, Fig. 5, I fix them to or under a box or frame suitable for the purpose; I then furnish this box or frame with eight brass grooves, as marked 000, in the drawing Fig. 4, fastened to the sides with screws; I then furnish it with a crank, or four cranks in one, that is, one crank out of each side of the same piece of square iron or any suitable metal, being one up, one down, one towards you, and one from you. My further improvements are in the formation of one end of the crank or cranks; I fix two tooth and pinion wheels a sufficient distance from each other upon the end of the crank above mentioned, to allow two wheels of the same diameter and thickness to stand between them, so that the cranks may go round without moving the other wheels marked C and E; and the wheels D and F, on the cranks AA in the drawing, Fig. 4, being made fast on the cranks A A by means of a screw or pin, and the wheels C and E being fixed close together, slide to and fro upon a square end of the axle marked U in the drawing, Fig. 4, by the means of a guide or sliding geer marked. V in the drawing, Fig. 4, which is fixed in a groove turned out of the nave of the wheel E, by means of a clip and two screws which fasten it underneath, and rests in the notches fixed at the other end of the box or frame, for the end of the guide or geer to rest in ; the notches are three in number on each side of the box or frame marked Win the drawing, Fig. 4; the one farthest from the wheel has the guide V drawn back, with the wheel marked E upon the small wheel marked F; by moving the guide into the middle notch, keeps the wheels C and E between the wheels D and F; and the notch nearest the wheels, guides the wheel C on the large wheel D, so that the power is much greater when forcing or drawing water from a greater depth. When the wheels C and E are

placed

placed in the space between the lower wheels, I then move the handle from the upper axle U, and place it upon the end of the crank A A, and work without the assistance of the wheels, as occasion may require. I further furnish this machinery with four key-bow rods marked BBB in the drawing, Fig. 4, for the purpose of fixing the spear boxes or blunging rods to, by means of a joint and pin or bolt, the key-bow being filed square across in the inside, so as to give the rolling step a fair bearing.

I do also claim as my invention the following mode of making the rolling step, marked Y and X in the drawing, Fig. 5: I form two pieces of brass, the one half round, and the thickness according to the strength or size of the machinery, and the other round, like a wheel or sheave in form, of the same thickness as the other half; I then cut this round sheave or wheel' half through the middle edgeways, I then cut that piece off, and cut à dovetail down the width in proportion to the crank; I then fit the other half into the place where I have cut out of the larger piece, and hold them together by means of two screws; this being done, the sheave or wheel then bears the form of its first appearance before being cut; I then drill a hole through the centre of it, and place it upon the before-mentioned crank or cranks, this being done and fitted together in a proper manner; the drawing, Fig. 5, marked Y, represents the larger half of this step, and the drawing marked X represents the smaller half, with the dovetailed piece standing upon it, which fills up the vacancy or room that is made in the large half for fixing it upon the crank. I also claim the following as my particular mode of forming the key-bow rod, it being made in so simple a manner. The ends of each bow being set in the grooves 000 in the draw

x.

ing, Fig. 4, and the key-bow rods marked BBB B, work through holes in the bottom of the box, for which purpose I have formed an iron plate or bar with four holes, as marked SSS in the drawing, Fig. 6, which I fix to the bottom of the box or frame with screws; the rods being fitted into the holes in this plate, keep the stroke of the pump perpendicular, while the step rolls to and fro in the key-bow as they are forced up and down by the cranks moving or turning alternately round. When this machinery is made use of over a forcing pump, or placed upon a fire engine, it causes a greater quantity of water to be discharged from the cistern or engine, and it being so powerful, it is highly necessary it should have a cock of a superior size, to let more water pass through in the same time than ordinary. I have for this purpose invented a cock which will admit a great deal more water than any other that has been made for the purpose. I therefore claim as my invention the formation of this cock. I make the barrel or part of the cock where the key or stop goes in all to one side; this being done, I have but one stop to the plug or key, the stop resting in that part that overhangs the side, admits of room for a full sized water-way to be completely through it, without causing the water to have any bubble or curl as it passes through the plug; the drawing, Fig. 1, represents the side view of the cock; the drawing, Fig. 2, a top view of the cock; and the drawing, Fig. 5, the plug with the water-way cut out.

REFERENCE TO THE DRAWING.

Fig. 1, a side view of the cock.

Fig. 2, a top view of the cock.

Fig. 3, the plug of the cock.

Fig. 4, the box with the improved machinery, and the

front