US91675A - Improvement in water-meters - Google Patents

Description

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Letters Patent No. 91,67 5, dated J'zmc 22, 1869.

IMPROVEMENT IN WATER-METERS.

- The Schedule referred to in these Letters Patent anl"\mak.ing p art Of the 53m0- lb all whom it `may concern.-

Be it known that l', HENRY G, SERGEAN'L, of the' city, county, and Stute of New York, have invented a new and useful Improvement in Water-Meters, and other motors, of which th following is a full, clear, and exact description, reference being had to the accompanying drawing, forming part of this specification, and in which- Figure 1 represents a vert-ical longitudinal section of a water-meter constructed in accordance with my improvement;

Figure 2, a transverse section of the same, taken as denoted by the line x in tig. 1; and

Figure 3, a horizontal section of the piston and cyliuder of the meter, detached.

vSimilar letters of reference indicate corresponding g parts.

My invention consists in such an arrangement of passages in the main piston, together with others connect-ing the main and valve-cylinders, in combination .with a reciprocating main piston, working within a tinuously keeping open such admission, and maintainv ing in a like continuous manner an Open character to the exhaust-passage from the main cylinder, an auto? matic reciprocating action is kept up of b'oth the valve' and main piston under a mutual control, the one by the other, without the intervention of tappct or: other gear, or aid of an independent secondary valve.

Referring to the accompanying drawing-,

A represents the cylinder' of the meter, covered at its opposite ends by hollow cylindrical caps or heads, B B', of somewhat larger interior diameter than that of the cylinder. t

lVithin or through this cylinder, and into the hollow heads B B', a piston, O, is arranged to work or reciprocate, said piston-being shown as constructed of a donble-bucketed or chambered form, that is, having open-end chambers a a' on opposite sides of a central diaphragm portion of the piston.

Said piston is also constructed or provided with diagonally-arranged passages or pipes D D', one on ,either side of its diaphragm;v the same opening at,

their opposite ends, through the periphery of the chambers a a', or oblique slots may be substituted for such' passages.

E is the exhaust-passage of or to the cylinder A, the same being in direct communicatiomby an opening, l1, with suid cylinder or piston moving therein, and by an opposite opening or passage, 1),withthe valve-box o1' cylinder F, with which passages G G', leading to opn posite ends ofthe cylinder A, also are in communica.-V ticu on opposite sides of the opening b.

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The valve-box or cylinder F has also end pipes or passages H H', connecting it with the cylinder Aat points intermediate of the ends of said cylinder and exhaust-opening l1 thereto, and in line with the one end of either diagonal pipe D D.

I is the water-inlet to the valve-cylinder F, and which is in communication, by passages c c', with the central or intermediate portion of said cylinder F.

Arranged to reciprocate within this cylinder, is a piston-valve, J, made up of extended end l'neads d d', and a central'head, c, with reduced portions, ff', between the latter and the end heads.

The central head e is of slightly greater width than the exhanstport or opening b', so as to establish lap on both sides of said opening in passing over it, while the inner faces of the end heads (l zl'vare at such distance from each other as that when the central head 'e is over the exhaust-opening b", communication is established for the incoming water through the passages c c to the cylinder F, between the central head e and both end heads d The operation is as follows: Snpposing the parts tobe' situated as represented iu the drawing, water entering the cylinder' F by the passages c c', exerts an opposite or connteractiugteuf .deucy on the several hcadsof the valvel that servesto Vimpar-tno motion to the latter, and,l were the pressure' to be equal on the outer surfaces of the end heads, as

well as on the inner face'slthelreof, the valve would remain stationary; butalthouglbwin the working of the meter, .both the viiiain and"al'vel-'cylinders and several passages are full of water,there,fnevertheless, is established an inequality of'. pressure on the outer surfaces of the end heads d d', as the piston C reaches the e'nd of its stroke in either direction^, f\vhich inequality serves to throw the valve, andbyfsddoing to reverse the motion of the piston. rIhis `isf-,done by establishing communication, through the motion of the piston, between the cylinder' F, alternately at its opposite ends, and the general exhaust E. rllhus, as the parts stand, the piston C having reached the end of its stroke to the right hand, the pipe D is brought into communication, through the port b, with the exhaust E, and through the pipe H with the right-hand end of the cylinder F, which causes the valve J to be thrown in direction of the arrow z, by reason of the pressure of the water received by the pipe H from the cylinder A acting against the back of the head d, while the outer face of the head d is relieved from pressure by Athe communication of that endl of the valve-cylinder with the exhaust through the pipes H' and D.

This shifting of the valve J to the right, prevents water being admitted through the passage c, ,and opens the exhaust-port b to the passage G, which relieves the piston C of pressure on its 1eft-haud side or face, while it is exposed ou its opposite side or face to full.

pressure of the. incoming water, received through lthe passages c and G', which shoots the piston C to the opposite end off the cylinder, As the piston G, however, thus moves to the left hand, or as it approaches the end of such stroke, its pipe Dis brought into com- 4 munication with the exhaust-port b and pipe H, and the pipe H made to freely supply water to the back ofthe head d', which reverses the action or throw of the valve J, causing it, as it passes to the left hand, to again assume the position represented inthe drawing, and, as the valve is thus thrown to the left, the passage c is closed by the head d', and passage G opened to the exhaust-port b', and water freely received through the passages e and G. This causes the piston C again to he moved to the right, and in due course the valve to be again reversed.

In this way is a continuous reciprocating action kept upof the independent` piston and valve without the aid of internal or external gear, the motion ot either one being controlled by the movement of the other over its or their respective passages.

The lap given to thc exhaust by the head e, and distances of thelheads d el apart'relatively to the passages c c', prevent any dead-point in the throw ofthe valve, and it is desirable that the pipes H H' should never be entirely closed by theheads d d', so that there will always be water in the ends of the cylinder l to /start the valve hack again, and to secure for it a cushioning action, which latter may be enlarged by notching the heads al d', as at s s.

Though the valve J is here shown as of a balance cylindrical character, a diii'erent form of valve may be substituted, or a combination of tlat slide-valve with end heads may be employed, if preferred.

It is also desirable to notchthe ends ot' the chambers a a as at fm m Ato insure a free ingress for the '.hoops, h, that, as the piston reciprocates, is or are made to engage with a rod or rods, fi, fast to either 'headfB B. ihis mode of guiding the piston renders unnecessary all objectionable rod-extension for the purpse,'outside of either. cap B or B; also involves no leakage or packing.

The quantity of water passing through the meter arms or out of the exhaust, cach stroke'oi the piston, being ascertained by the capacity ot' the chambers a a', or quantity of' water displaced by them, it only requires to connect the piston C with a suitable indicator to effect a perfect register. This may be done by an attachment, k, to the `piston and connecting-devices running through the one end of the cylinder A, or otherwise. y

The same combination of main piston with its cylinder, valve, and its cylinder and passages, as described, may be used in working the device as a motor to opcrate a pump, steam being substituted for water, as the impelling-uid, to throw the piston and valve, and the piston being provided with a rod extending through either head. 13 or YB of the cylindelg'for the purpose of v establishing connection of it with the plunger of the pump. i

What is here claimed, and desired to be secured by Letters Pat-ent, is-

1. A reciprocating piston and indcpendentreciproeating valve, having passages connecting their respective cylinders or cases and water-ways in the piston,

in connection with suitable inlet and outlet-passages,

.so arranged that thevalve and piston are'made to con trol each other by the direct action of ,the fluid passing through the meter, withoutthe aid ot' valve-gear or other intervening mechanical devices, substantially as set forth. y

2. The combination of the piston C, cylinder A, and hollow heads or caps B B', with the valve J, having heads e l d, and cylinder F, provided with passages H H', connecting the valve-cylinder with the main cylinder, and main inlet and outlet-passages I and E, essentially as shown and described.

3. The valve J, so constructed and arranged rela.-

tively to the exhaust-port b', which it controls, and

inlet-passages c c', as that while said valve overlaps the exhanst-port inpassing it, `ingress is established for the impelling-tiuid through the passages c c to the valve and opposite ends of the main cylinder, substantially as described.

4. The combination, with the piston C, ol one or more eyes or loops, h, and guide-rods i, arranged within the main cylinder or its heads, substantially as shown and described, for the purpose set forth.

H. C. SElGEAN-T.

Witnesses:

FRED. HArNEs, HENRY PALMER.

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