US1190400A - Weir-plate. - Google Patents

Description

W. S. GIELE.

WEIR PLATE.

APPLlcAnpN FILED SEPT. 14.1914.

'1,1111 9m.. Patented July 11, 1916.

1; ATTORNEY WALTER s. GIELE, or PHILADELPHIA, PENNSYLVANIA, AsSIGNoR To JOSEPH s. LovERING WHARTON, WILLIAIVIA s HALLoWELL, AND .IoHN c. JoNEs, ALL or PHILADELPHIA, PENNSYLVANIA, DOING BUSINEss UNDER THE EIRMLNAIVIE or HARRISON SAFETY BoILER WORKS, E PHILADELPHIA, PENNSYLVANIA.

WEI-PLATE.

Specification of Letters Patent. Pgmggntd July 1ML" jlgljm Applcationiled September 14, 1914. Serial No. 861,561.

To all whom t may Concern.'

Be it known that l, WALTER GIELE, a citizen ot the United States, residing in the city and county ot' Phiadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Weir-Plates, of which the following is a true and eXact description, reference being had to the accompanying drawings, which 'form a part thereof. i

My present invention relates to liquid measuring apparatus of the type in which the quantity of liquid passing over a weir is determined from the varying accumulation of liquid on the supply side oit the weir; and the invention consists in a notched weir plate possessing` certain novel features of construction. and arrangement, devised to insure a high degree oi' accuracy in the formation of the weir notch while permitting a comparatively low cost oli' construction, and to facilitate the accurate setting of the weir.

The various features 'orl novelty characteriZing my invention are pointed out with pai'- ticularity in the claims annexed to and forming a part of this specification. For a better understanding of the invention, however, and ot the advantages possessed by it, reference should be had to the accompany ing drawings and descriptive matter, in which I have illustrated and described one form in which my invention may be embodied. i

Of the drawings: Figure l is a perspective view, with parts broken away, of a weir measuring tank provided with notched4 weir plates constructed in accordance with the present invention, Fig. 2 is an elevation, on a larger scale than Fig. l, ot one of4 the weir plates shown in Fig. l.; Fig. 3 is a plan view oi the weir plate shown in Fig. 2; and Fig. 4l is a section-on the broken line lc-4 of F ig. 2.

weir measuring tank A of Fig. l is divided into an inlet compartment A and an outlet compartment A2 by a transverse partition A3, which is provided, as shown, with two V-notch weirs. The weirs proper are not formed by the partition A3, but by weir plates B, each formed with a V-weir notch and each secured to the partition A3 as by bolts A4. Actually, the partition A3 is The somewhat conventionally illustrated formed with notches A5, somewhat larger than the weir notches proper. Each weir plate B is formed in two symn'ietrical parts, the meeting edges uniting to form a` joint l), which is advantageously brazed to secure the two halves of the weir plate together, and extends vertically downward to the bottom edge of the plateifr'on'i the apex B2 of the weir notch.

When a weir notch is formed in a one piece weir plate, it'becomes necessary to finish the notch by hand; and it is very dithcult to .finish the beveled edges B of the notch, and especially the portions adjacent the notch apex B2, with suiiicient accuracy. lt is a comparatively simple matter, however, to accurately machine the marginal edges of a plate, such as each of the two sections out of which each weir plate is made in the construction illustrated, with a high degreev of accuracy, both with respect to the straightnessof the individual edges and with respect to the angular relation of the edges to one another.

In the practical use of ordinary notched weir measuring apparatus, it` is 'essential that the weir plates should always be installed with the side edges of the notches making predetermined angles with 'the hori- Zontal, and the ordinary conditions of practical use require that each weir platebe assembled with the line bisecting the angle of the weir notch extending vertically. lt also practically essential, of course, for the Calibrating oi the apparatus, that the integrating or recording instrument should be correspondingly set or adjusted when the liquid level on the supply side'of the weir is at a predetermined or datum level with reference to the weir plate. 'To insure the proper setting of the weir plate and to permit an accurate determination of thedatum level, provide the 'weir plate with lugs C, which have their upper ends shaped to provide upwardly projecting points C. The latter are horizontally displaced from the adjacent side of the weir plate, and lie in a plane which is perpendicular to the plane of the weir plate in the normal operating position oi the weir and passes through the apex B2 of the weir notch. When a plate thus provided with theJ points C is secured in place in a measuring tank, as, for instance,

the tank A shown in Fig. 1, the setting of the tank to obtain the proper weir disposition'may readily be effected by adjusting the tank until the liquid level onthe supply side of the weir coincides with th plane passing throughthe points C, and the apex BZ Lof the weir notch. The accuracy with which a point extendingupward from beneath the surface of a bodyfof liquid can be brought to the exact surface level is familiar to all those skilled in the art.

The lugs C are advantageously formed separately from the weir plate and brazed in position. The proper setting of the lugs C,.when secured to the plate in this manner, is readily obtained by means of a gage E, formed with three cylindrical lugs E, E2 and ES on one side, as shown in Fig. 2. These lugs E, E2 and E3 engage the side edges B of the weir notch at four points only, when the gage is put in place as shown in Fig. 2. The gage E also furnishes an effective means for determining the accuracy with which the weir plate has beenrformed, for a very minutey errorin the angle between the two side edges B oi' Vthe weir notch will permit an appreciable and easily detected rocking,

movement of the gage plate E, when the latter is put in place as shown vin Fig. 2. Then the gages/plate is thus put in place in a properly formed weir, the lugs C are brazed in place with their points C engaging the'straight edge formed at the under side of the gage plate E. Lugs D, having flat upper ends are also advantageously secured to each weir plate, one adjacent, but on the outer side of each lug C. The lugs D are secured in place with their upper ends in engagement with the under side of the gage plate E. The lugs D are intended to support a straight edge on which a surface y level may be mounted to obtain an approximate setting of the weir tank, and also form a means by which the dilierent weir plates may be set relatively to the partition A3, when a plurality of weir plates is employed,

f as in Fig. l, with the apices of the different weir notches all at the same level, and with 'the corresponding side edges of the weir notches all at the proper angle to the plane normal to the plane of the weir plates and passing through the differentv weir notchV apices. The lugs D save the lugs C from being put to uses which would tend to blunt the points C.

While in accordance with the provisions of the statutes, I have illustrated and described the best form of my invention now known to me, it will be apparent to those skilled in the art that changes may be made in the form of apparatus disclosed without departing from the spirit of my invention, and that under some conditions certain features of my invention may be used without a corresponding use of other features.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A V-notch weir plate comprising two sections secured together and each formed with an elongated straight edge fitting against the corresponding edge of the other to form a tight joint intersecting the apex of the weir notch.

2. A V-notch weir plate provided with laterally projecting positioning lugs terminating in upwardly extending points which are located in the same horizontal plane in the normal .operating position of the weir plate.

3. A V-notch weir plate provided with positioning lugs terminating in upwardly extending points located in a horizontal plane transverse to the weir plate and passing through the apex of the weir notch in the normal operating position of the weir plate.

4. A V-notch weir plate having lugs secured to one side thereof and terminating in upwardly extending points displaced from the said side of the weir plate and located in the same horizontal plane in the normal operating position of the weir plate.

5. A V-notch weir plate provided with a pair of spaced apart positioning lugs terminating in upwardly projecting points, and a second pair of lugs one adjacent cach of the first mentioned lugs and each having a fiat upper end lying in the same plate transverse to the weir plate with said points.

WALTER S. GIELE. Witnesses:

ROBERT G. CLIFTON, JOHN C. JONES.

Copies of Vthis patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C.

Images