US527534A - Lewis hallock nash - Google Patents

Description

L. E. NASH.

Y DISK WATER METER.

(Np Model.)

Patented Oct. 16, 1894.-

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l UNTTEE STATES PATENT @#EETCE.

j `:tEwIs T-IALLOCK NASH, OE souTi-I NORWALK, CONNECTICUT, AssicNoR To THE NATIONAL METER COMPANY, OE NEW YORK, N. Y.

` a citizen of the UnitedStates, residing at `DISK WATER-METER.

SPIECIFIGATION forming part of Letters Patent No. 52 7,534, dated October`16, 1894. Application mea any 2s. 1,891. serai Nojioafifio. (No model.)

To all whom t may concern:

Be it known that I, LEWIS HALLOCE NASH,

South Norwalk, in the county of Fairfield, in theState of Connecticut, have invented cer-` tain new and useful Improvements in Watertion.

Meters, of which the following is a specificalVIy present invention consists of certain novel parts and combinations of parts specilically pointed out in theclaims concluding this specification.

For the purpose of informing those skilled in the art of the nature of my invention, I

have, in the accompanying drawings, shown meters involving my invention in forms which are at present preferred by me, and

` these drawings, read in connection with the `'following description, will enable such personsto make and use the same; but it will be understood that the several features of my invention are not` limited to the forms and combinations shown, and that Various modiflcations may be adopted without exceeding the scope of the claims.

The following is a description of the structures illustrated in the drawings.

Figures 1 and 2 are vertical sections through `the measuring chambers of two water meters, the dial mechanism and connecting parts being removed, as shown by dotted lines. Fig.

3 is avertical section through a piston.

Similar letters of reference indicate corresponding parts in all the figures.

Referring to Fig. l, A,B is a meter case of `well-known general form. C is the shaft through which the motions of the pistonare communicated to the registering mechanism.

. The `heads and sides of the measuringchamber A, B are preferably, although, so far as some of the novel features of my invention are concerned, not necessarily, of a non-cor- `rosive metal, as bronze.

`num vitae, vulcanized fiber, &c.

E E are the seats of the ball of the piston, preferably made of a non-metallic material, `as hard rubber, lig- D isa nul tating piston made entirely of a non-corrosive metal, l provided with a pin J connecting with the registering mechanism through the shaft C. y

Referring to Fig. 2, the case A, B is preferably made of a non-corrosive metal. The disk of the piston D is made of metal. The exterior I-I of the ball of the piston is made of a non metallicmaterial. The interior F of the ball is made of metal, preferably in one piejce with the disk G. The nonmetallic layer H, if of hard rubber, being thin will be distorted but little by variations of temperature. Referring to Fig. 3, which shows a nutating piston without a case, but made to t either of the cases shown in Figs. l andZ, G is the disk` made of metal and O the ball made of hard rubber in two` parts I and I interlocked and held together by a pin P, screw threaded on its lower end to receive a nut Q and having a shoulder R toward the other end. The parts I, I embrace the inner rim of the disk G, which abuts against a shoulder S in the ball, by whichit is accurately centered.

Before setting forth in the claims the novel features of my invention, thus distinguishing what is old from what is new, I will briefly `describe some of the advantages possessed by the structures above described.

The disks of nutating meter pistons heretofore made have been comparatively fragile and liable to break. By making the disk of metall altogether avoid difficulty. However, if both piston and case were made entirely of metal,` the friction and wear occurring `would make the structure of little or no value as a practical Water meter. As the principal friction surfaces are at the ball of the piston and its seat in the case, by making these parts of dierent materials-for instance, one of metal and the other of non-metallic material--the friction and Wear `become very slight. Thus the maximum strength and the minimum friction and wear are obtained and a durable and efficient meter is made. Such a piston can be used in any suitable case. If the piston, as I prefer to make it, have a disk of metal `and a ball of non-metallic material, it may be used in a case composed of any material or materials,for but `little friction and wear will be developed` in the ball-bearing, even if the seat in the` case be `of the same or similar non-metalliclmaterial, as for example, if both be made of hard rubber.

IGO

When the Walls of the case as well as thek disk of the piston are made of metal, while the kseat and ball are either both of non-me-4 tallic material, or one is of non-metallic material and the other is of metal, the wear on the opposing metallic surfaces, particularly between the spherical walls of the case and the rim of the piston will, other things being equal, be faster than at the other parts and hence the weight of the piston will always be supported on the ball-bearing where friction is least and friction contact between the edge of the piston and the spherical walls of the case avoided. Besides, by making the ball of the piston removable, asin Fig. 3, or the seat or seats in the case removable, as in Fig. 1, these parts can be easily replaced when worn out, and this irrespective of the materials of which they are made and irrespective of the materials against which they bear.A

In the claims I employ the words co-efcient of abrasion to indicate the rapidity with which Wear will take place between opposing surfaces.

In the foregoing specification I have incidentally referred to a few of the modifications which may be adopted in practicing my invention, but I have not endeavored to specify all the modifications which might be employed, the object of this specification being to instruct others skilled in the art to practice the several novel features of myy invention in forms at present preferred by me and to enable them to understand its nature; and I desire it to be distinctly understood that mention by me of a few modifications is not in any way intended to exclude others not referred to, but which are within the spirit of my invention.

Many of the combinations and details illustrated and above described are not essential to the separate features of my invention separately and broadly considered. All this will be indicated in the concluding claims, as in any given claim the omission of an element, or the omission of reference to the particular features of the elements mentioned, is intended to be a formal declaration of the fact that the omitted elements or features are not essential to the invention therein covered.

Specific claims on the structures shown in Figs. 1 and 2 are not included in this patent as such form the subject matter of two pending applications for patents filed ley-Ine November 3, 1893, bearing Serial Nos. 489,832 and 489,833. It will, however, be understood that certain claims of this patent include within their scope both of such structures.y

' What I claim is- 1. In a water meter a nutating piston composed fof ball and disk combined with a case provided with seats for the piston ball, the disk of the piston and the spherical walls of the case being composed of substances having a larger co-efticient of abrasion than the substances composing the ball of the piston and its seats in the case.

, 2. In a water meter, the disk of a nutating piston and the opposing case walls made of similar materials combined with the ball of said piston and the ball bearings in the case made of dissimilar materials.

3. In a Water meter a nutating piston composed of a disk, the exposed surface o' surfaces of which are metal and a ball the exposed surfaces of which are of non-metallic material combined with a case and seats for the piston ball.

4. In a water meter, a nutating piston composed of a disk and hall, an exposed surface kof said disk being of metal and said ball being of non-metallic material.

5. yIn a water meter, a nutating piston composed of a disk and ball, an exposed surface of said disk being of metal and said ball being of non-metallic material, composed of separate parts embracing the inner rim of said disk.

6. In a water meter of the nutating class, the combination of a disk, a ball composed of separate pieces embracing the inner edge of said disk, a pin provided with a shoulder and a screw threaded end, and a nut adapted to take on said screw threaded end, by means of which the said pieces are held together.

7. In a piston of a nutating water meter the combination of a disk composed of metal, and a ball composed of non metallic material.

8. Ina Water meter a nutating piston comroo Witnesses:

J. EDGAR BULL, WILLARD JAcoBUs.

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