US33675A - Improvement in liquid-meters - Google Patents

Description

. PATENTED Nov. 5, 1861.

. J; G. COOKE.

LIQUID METER.

UNITED STATES Prion.

PATENT JAMESC. COOKE, OF MIDDLETOVN, CONNECTICUT, ASSIGNOR TO XVILLIAH VILCOX d; CO., OF SAME PLACE.

MPROVENIENT IN LIQUID-METERS.

Speoicaton forming part of Lettersl Patent No. 33,675, dated November 5, 1.861.

for Measuring Vater and other Liquids; and

I do hereby declare that the following is a i' ull, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specication, in which- Figure l is a central longitudinal vertical section ot' a meter constructed according` to my invention. Fig. 2 is atransverse vertical section of the same in the plane indicated by the line a: .fr in Fig. l.v Fig. 3 is a section ot' the valve and seat, representing the valve in va position the reverse of that shown in Fig. 2.

Fig. 4 is a diagram of the groove'in the valveoperatingrock-shaft.

Similar letters ot reference indicate corresponding parts in the several figures.

My invention consists in a certain novel arrangement of a valve and its operating mechanism, in combination with a cylinder and piston for effecting the measurement ot liquids by counting the number of reciprocating movements of the piston produced by -the pressure ot' the liquid admitted to it by the valve on opposite sides alternately.

To enable others to make and use my invention, I will proceed to describe its construction and operation.

A is a cylinder having the axis in a hori- -zontal position, t-ted with a piston B, packed in such a manner as to work freely but water-tight within it. One end of this cylinder is closed and the other opens into a valve-box C, which is bolted securely to it. In the lower part of this valve-box is the horizontal seat a a of the slide-valve D, which is ar` ranged to work transversely to the axis of the cylinder A and piston B over four ports 'L' o b b. (See Fig. 2.) The two outer ports t' and o communicate with the two passages I and O, with the latter of which the outletpipe is connected and with the former of which the inlet-pipe is connected; .and the two inner ports l) and b communicate with a passage c, which leads under the bottom of and communicates with the farther cud of the cylinder A, as shown in Fig. l.

The valve D has two ports d d right through it, and two cavities e e in its face, the said cavities being between the said ports, and the whole being constructed and arranged in such manner relatively to the ports in the seat that when the ports d and t' are in direct communication b and o are brought into communication by means of the cavity e -in the valve, as shown in Fig. 2, and when CZ and o are in direct communication b and z' are brought into communication by means of the cavity e in the valve, as shown in Fig. 3, the latter position being the reverse ot' that shown in the drawings.

The valveD is connected by a pinfwith a horizontally-moving lever E, which Works on a fixed fulcrum-pin g, secured in the bottom of the valve-box, and this lever is shifted to move the valve from the position shown in Fig. l to the reverse position and back again as the piston arrives at one and the other end of the cylinder by means ot' two tappets h h on the horizontal rock-shaft F, which' is arranged with its axis in line with the axis ot the piston in suitable bearings 07j, the latter of which is fitted into the head ot' the cylinder A, and the former is supported upon a bridge G, which is secured to the bottom of the valvebox C. This rock-shaft is made hollow to serve as a guide for the piston-rod B', which is rigidly secured to the piston B. By thus making the rock-shaft serve as the piston-guide much space is saved within the meter. In the exterior ot' the rock-shaft F there are two curved oblique grooves lo 7c for the reception of a stud l, carried by a slide H, which is attached to the piston by hooking into a grooved circular protuberance m on the face thereof, and Which works in guides in the bridge G, the said grooves Ila 71: extending half-Way round the shaft and meet` ing at their ends, and the said rock-shaft is furnished with an arm F', loaded with a heavy weight l1"2 and with a cam or wiper n. The stud Z, moving parallel with t-hc axis ot the rock-shaft in one direction along the groove k and in the opposite direction along the groove lo', turns the rock-shaft in opposite directions far enough to carry the arm F so far-past a vertical position above the Shaft that the weight F2 will throw it over suddenly to a horizontal position, or as tar as is permitted by stops [1 p, attached to the said weights and coming in contact with the bottom of the valve-box or bridge G, and so cause the valve to be shifted suddenly from one to the other of the two positions hereinbetore mentioned, and represented in Figs. 2 and 3, to reverse the action ol the water on the piston as the latter arrives at the end of its stroke in opposite directions. By hooking the slide II .into the grooved circular protuberance ym on the piston it is enabled to be attached whichever side of the piston is upward.

J is a slide arranged to work horizontally and transversely to the rock-shaft in guides q q in the upper part of the valve-box and carrying two pawls r r to act on a ratchetwheel on opposite sides of the axis thereof and so that one will move the ratchet-wheel while the slide J is moving in one direction and the other while the said slide is moving in the opposite direction. These pawls have attached to them weights s s', which hold them up to operate on the ratchet-teeth, but which allows the ratchet-teeth to pass each in turn while the other is operating.

The slide J is moved in opposite directions alternately, making one movement for each stroke of the piston by the action of the wiper n upon one andthe otherby means of two protuberances i: if on the lower part of the said slide.

To explain the operation I will rst suppose the parts to be in the position and condition represented in Figs. l and 2, the piston having just completed its stroke toward the vali-'e-chamber and the rock-shaft F having just moved in the opposite direction to the arrow shown near it in Fig. 2 and moved the valve to the position shown in that figure by means of its tappet ZL. The cylinders A and the valve-box I3 are both full of water, and water now begins to enter from I through ports Z and Z into the valve-box, and water from the valve-box enters the cylinders and by its pressure moves the piston toward the opposite or closed end of the cylinders, and the piston forces the water from the cylinder through the passage c, port @valve-cavity e, and port o to the voutlet O, and as this operation continues the stud Z, moving with the pist-on, travels along the groove Zr. and causes the rock-shaft to turn in the direction of the arrow before mentioned. Some time before the piston completes its stroke the arm F', -moving with the rock-shaft, passes the vertical position above the shaft, and when the piston has approached as near the end of the cylinder as is desired the studZ arrives opposite the opening u between the grooves Z; Zt" of the rockfshaft and allows the rock-shaft to be moved farther very suddenly by the fall of the weight F2 to the position the reverse new;

of that shown in Fig. 2, and by this sudden movement of the rock-shaft the tappet his caused to strike the lever 1I and move it to bring the valve to the position shown in Fig. 3, causing the water to enter the cylinder through the port i, valve-cavity c', port b', and passage c and drive the piston toward the valve-box, and the piston now forces the Water from the open end of the cylinder into the valve-box, and from thence through the ports Z and 0 to the outlet O,and during this movement of the piston the stud Z moves along the groove Ze and turns the rock-shaft F in the opposite direction to that indicated by the arrow shown near it in Fig. 2, and as the piston approaches near the valve-box the arm F passes the vertical position over the shaft and the stud Z arrives opposite the opening u between the grooves Zeh and permits the movement of the shaft to be continued in a very sudden manner by the fall of the weight F tothe position shown in Fig. 2, which brings the tappet h into operation on the lever E and causes the said lever to move the valve from the position shown in Fig. 3 to that shown in Fig. 2, when the movement of the piston is again reversed. In this way the operation is continued, and as the rockshaft moves alternately in either direction the wiper n acts alternately on one and the other of the protuberances o yU of the slide J, and so causes the said slide to be moved back and forth and the pawls o c" to act alternately on the ratchet-wheel t, and thus effect the registration.

IWhat I claim as my invention, and desire to secure by Letters Patent, is-

l. The valve D, with its ports (Z cZ and cavities e e', arranged to work transversely to the stroke of the piston in a box C at one end of the measuring-cylinder, and in combination with a system of ports t' 0 Z) ZJ and passages I O c, arranged substantially as vgrooved valve-operating rock-shaft F by means of a slide II, working in straigl'lt guides and hooking into a circular grooved protuberance m on the piston.

JAMES C. COOKE. iVitnesses:

J AMES LAIRD,

G. XV. REED.

Images