US1322146A - sommer - Google Patents

Description

0. SUMMER.

WEIR.

APPLICATION FILED FEB. 6, 1917- Patented Nov. 18, 1919.

' 2 SHEETS-SHEET 0. SOMMER.

WEIR.

APPLICATION FILED FEB. 6, NH].

1,322,146. Patented Nov. 18, 1919.

2 SHEETS-SHEET 2.

To all whom it may concern Be it known that 1,1013'1'0 SOMMER, an Austrian subject, residing at Zurich, Switzerland, have invented certain new anduse ful Improvements in Weir's, of which the following is a specificatioii'. l

The invention relates toi a dam and, a movable crest (such as a drum-mess nger; trap-crest and the like) pivoteldthereto adapted to be operated by the water pressure of the upper level; The objectfof'thfe inveiitionis to provide in connection there- 7 with a device constructed and arranged to be automatically controlled or regulated the height of the upper ;water level and to control for its return the pressure of the uppeuwater against thel movable ucrest so that the crest will te'rocked accordingly, in order to automatically keep or maintain'a predetermined upper-water. level notwithstanding the variations of its Water supply; With this end in view my invention con sists in certain novel features of construction and combinations of parts as will be fully described hereinafter with reference to the accompanying sheets of drawings in which: p Figure l is' a vertical section the proved automaticcontrollingde ice in ciori nection' with a dam and a movable crest hinged relation t'liereto, the upper water be; ing at normallheightf ithe' c'rest and the device in their positions of rest; C p

r -L2 shows qsi fr sweetenesent'atio'n'; the upper, Waite having risen.

above normal level; the go trbuiiig device andfthe 'crest" being in corresponding opera: tivetpositioiis'r 5; t

Fig: 3: shows the controlling device as? in dica'ted iii-i 1 in adet'ailed View on a larger scale p a e v i l sett e Pee Selle scale of a modified form of the controlllng Fig. 5 is a similar. sectionallview as'Fi'g. illustrating af further modification of the controlling device; r

S'rn'lar numerl of reference refer to like parts; throughoutl tlie figures;

Referring: to Figs. the controlling de vice comprises a cylindrical slulce-valve a mounted in well or shaft band adapted to cut ofi'yjvvhen in its lower end position an openingp in the bottom wall or bed' I) of tlie sh aftfl (Figs; 1 and 3'). The interior of this shaft is in coinniunication with the pressure chamber (Z of the dam D by a suitable channel a or the like. The lower portloiifofthe' crest Q pivoted-at C? to the dam structure; extends into the said pressure chamber'd YVithin the cylindrical sluice valve a'is' arrang'ed'a vessel 7 extending up to aboye thehigh water level of the upper pond an'd lieing supported by a hollow foot g o thelike in comm unication witli the said vess chamberbi underneath the shaft-bed b and all; iines in connnimication with the upper wate'r' by means of a suitable conduit P PQB';i7.. (F le11d2)- he] Water i the vessel] tendsltherefore t o rise to thesaine heightj asthe level of the upper water to be This footrests on the bottom of a controlled? 1111 0 the vesselj is nested af When the level of the eupper water rises above the normal height, for example for the'fdi'stance' K2,? the flo at h and the sluice,

valve ci like wise rise allovvfwater to flow ofl'rrpm the shaft 6 and the pressure chamber dw through the opened passage 0 4 into the discharge chamber 6 in connection with'flthelower pond, (Fig. 2). This discharge off water causes a. decrease of the pressure in thejchainber d. Owing to the diminutioniii pressure on the lower portion of the; crest and to the increase in pressure onl the; upper portioii ofthe crest resulting therefrom, there exists a moment to cause thejlcrest to rock or overturn. In overturning the lower portion of the crest pushes aside the contents of the pressure chamber (Z, while the upper portion of the rocked crest allows the upper water to discharge over its top into the lower pond, (Fig. 2). The overturning of the crest increases, until the level of the upper water has sunk sufficiently or the sluice-valve sinking with the float accordingly, has throttled the discharge of water through the outlet passage 6 so far, that the overturning moment is compensated for by the again increasing water pressure acting in the pressure chamber on the lower portion of the crest. The crest remains then stationary in the corresponding overturned position, (Fig. 2). \Vhen the level of the upper water is sinking still farther, the discharge of water from the pressure chamber will likewise be throttled to a still greater extent, the water pressure in the chamber d will increase still more and finally exceed the moment acting to overturn the crest. The latter then rights itself again by rocking or turning back into the position shown in Fig. 1, while the sluice-valve returns into its cutting-01f position.

By varying the weight of the float by means of suitable additional weights preferably to be attached to the sluice-valve, or by adjusting the length of the connecting means if between the float and the valve, the controlling device may be adjusted for different maximum levels of the upper water. The float it moving in the vessel f onlywith small play, acts at the same time as a hydraulic brake, whereby the hammering otherwise usual with cylindrical sluicevalves is obviated.

In the modification disclosed by Figs. 4: and 5 a tank 7; of a diameter d is connected with or mounted upon the float h of a diameter D, the tank being supplied through a pipe with water from the stationary vessel 7, the pipe 70 being preferably passed through the floating body h as shown in drawing. Through this pipe 70 is passed a small distance apart an over-fall or by-wash pipe m which is supported by a hollow form piece m fastened in the bottom of the vessel and discharging into the passage 0. The upper end or overfall-rim of the pipe m is at the same height as the normal level of the upper water. By applying a cap or hood a over its upper end the pipe m may be made to act as an automatic siphon. The float k is loaded in a similar manner as the float h (Figs. 1-8), so that its floating power at normal level of the upper water is just equal to the total weight of the parts to be lifted and of the water contained in the tank 2'.

The mode of operation of this modified form of controlling device is as follows: Vhen the level of the upper level is rising for a certain height, for example for a distance 2 the float together with the tank i and the sluice-valve a rise for the same distance 2. But by such rising a part of the water-ballast contained in the tank, namely a water column equal to the volume of the cylinder is discharging through the pipe m, as the latter can discharge much more water than the annular channel between the two pipes in and m is able to supply. The total weight of the raised parts will thereby be reduced for the weight of the water column For this reason the float with the parts attached thereto will continue to rise until the reduction in weight caused by the diminution of the water ballast has become equal to the decrease in buoyance ofthe float.

To the above statement applies the following arithmetical relation:

The decrease in weight of the water-ballast after the float has passed the way 93 is equal to The decrease in buoyancy of the float is equal to gh e- 7 of the said tank can take place only slowly. i By varying the total weight or the additional weights or by adjusting the length of the connecting screw bolts of the float the controlling devices according to the Figs. 4 and 5 may be adjusted to apply likewise to different maximum levels of the upper water.

Some times it may be desired to automatically regulate not only the oulet 0 but also the inlet 0 of the shaft 6 in such a manner that the water supply is throttled, when the outlet passage 0 opens, and vice versa. For this purpose, the sluice-valve a (Fig. 5) is provided with a tubular slide p which according to its being raised or lowered by the sluice-valve or float respectively, narrows or widens the cross sectional area of the Water inlet 0. The general arrangement of the sluice-valve with relation to the dam or to the pressure chamber when a crest is concerned, remains the same as shown in Figs. 1 and 2.

I claim:

1. The combination with a dam and a movable crest in pivoted relation thereto, of a controlling device for automatically regulating the water pressure on the crest and thereby operating the latter, comprising a shaft communicating with a chamber of the dam and a separate discharge-chamber, a cylindrical sluice-valve within the said shaft and normally cutting off the communication to the discharge-chamber, a stationary cup-shaped vessel extending up to the high water level of the upper water and being at all times in communication with the u )per water to be regulated, and a floatingody within the said vessel and connected to said sluice-valve to operate the same upon a rise of water beyond the normal in the upper pond, as and for the purpose set forth.

2. The combination with a dam and a movable crest in pivoted relation thereto, of a controlling device for automatically regulating the water, pressure on the crest and thereby operating the latter, comprising a shaft communicating with a chamber of the dam and a separate discharge-chamber, a cylindrical sluice-valve within the said shaft and normally cutting off the communication to the discharge-chamber. a stationary cup-shaped vessel extending up to the high water level of the upper water and being at all times in communication with the upper water to be regulated, a floating body within the said vessel and connected to said sluice-valve to operate the same and a water ballast tank carried by the floatingbody and provided with an overflow adapted to regulate the water ballast in accordance with the rising and sinking of the float, as and forthe purpose set forth.

3. The combination with a dam and a movable crest in pivoted relation thereto, of a controlling device for automatically regulating the water pressure on the crest and thereby operating the latter, comprising a shaft communicating with a chamber of the dam and a separate discharge-chamber, a cylindrical sluice-valve within the said shaft and normally cutting ofi the communication to the discharge-chamber, a stationary cup-shaped vessel extending up to the high water level of the upper water and being at all times in communication with the upper water to be regulated, a floatingbody within the said vessel and connected to said sluice-valve to operate the same, and a tubular slide rigidly connected with the sluice-valve and adapted to throttle the inlet of the shaft according to the rising of the sluice-valve, as and for the purpose set forth.

a. The combination with a dam and a movable crest in pivoted relation thereto, of a controlling device for automatically regulating the water pressure on the crest and thereby operating the latter, comprising a shaft communicating with a chamber of the dam and a sepr rate discharge-chamber, a cylindrical sluice-valve within the said shaft and normally cutting off the communication to the discharge chamber, a stationary cupshaped vessel extending up to the high water level of the upper water and being at all times in communication with the upper water to be regulated, and a floating-body within the said vessel and connected to said sluice-valve to operate the same, a water ballast tank carried by the floating body and provided with an overflow adapted to regulate the water ballast in accordance with the rising and sinking of the float, and a. tubular slide rigidly connected with the sluice-valve and adapted to throttle the inlet of the shaft according to the rising of the 'sluice-valve, as and forthe purpose set forth.

OTTO SOMMER.

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