US 1031514 A
Description (OCR text may contain errors)
A. L. BJRKSTAM M. M. FERGUSON.
AUTOMATIGALLY GONTROLLED BYPASS.
APPLIGATIoN FILED ocT'. so, 1911.
Patented July 2, 1912.
2 SHEETS-*SHEET 1.
A. L. BJRKSTAM @L J. M. FERGUSON.
AU TOMATIGALLY GONTROLLED BY-PAASS.
APPLICATION rlLgplyoo'iw. 1911'.
Patented July 2.1912.
2 SHEETS-SHEET 2.
bww/bof: dlf- L Bjlbrkstam.
n James M. Fergu son.
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ADOLF'L. BJBKSTAM AND JAMES M FERGUSON, 0F SEATTLE, WASHIIPTGTON.
Specification. of Lettersatent.
Patented July 2, 1912.
Application led .October 3G, 1911. Serial No. 65?,658. l
To all whom it may concern: v
Be it known that I, Anous L. BJRK- STAM and JAMES M. FERGUSON, citizens of the United States, and residents of the city of Seattle, lin the countyof King and State of Washingtom'have 'invented certain new and useful Improvements in Automatically- Controlled By-Passes, of which the following is a specification.
Our invention relates to improve ents in hiitomatically controlled by-passe, and
. comprises the novel'parts and combinations 'of parts which will be hereinafter described and pointed out in the claims.
'The object of our invention is to improvev such devices in general, and particularly to better control the opening and closing of the by-pass valve and to better secure the operation of a detector meter, and to also make it possible to draw water through this .detector 'meter for certain purpos without-opening .the by-pass valve.
ln the drawings we have shown oui" invention in the form which is now preferred by us.
Figure l is a central longitudinal section taken through the by-pass; Fig. 2 is a top plan view with the cover of the ball-receiving chamber removed; Fig. 3' is a transverse Our invention is also designed to more effectively remove the valve closing force when the valve is fully open, thereby producing less throttling effect' upon the flow.
The principal demand for a device of this character is' in' connection with the in` stallation of 'a fire service of standpipes buildings, factories, etc., such services beingsupplied through other p1pes lthan thosev which supply the regular daily service, and
.being of afar greater Capacity. In thisy way it is possible to install a meter inthe daily service connection or' the size which is best adapted to take care of the'normal demands, leaving theunusual and 'larger The valve 2 is connected-,with
demands caused by lire conditions be taken care of through the by-pass or vemergency connection. As the use of Water for extinguishing lires is a public use it is not necessary to meter this.
The easing l which contains the by-pass vvalve and its controlling mechanism, is
adapted to beconnected with the supply main and the stand pipe. lt has a lthrough opening or channel of relatively large ca pacity, within which is a valve seat 12, nor* mally closed by a valve 2. 'For convenience in manufact-ure we have shown the casing as composed' of three parts, an end l0 which is connected with the supplymain, any end 11 which is connected with the stand` pipe or delivery end, and a dome or ball-receiv-.f
ing chamber 5, located over the lvalve and communlcating with the delivery end of the casing,
The casing is provided With two outlets,
14 and l5, located at opposite sidesofjthe valve seat and adapted respectively4 for con- A nection with the supply and delivery ends of a detector meter 6. The meter isE connected between these outlets, and, preterably, valves 60 and 6l are associated therewith, so that the meter may be cut out When desired. The purpose' of this `meter is mainly to provide a check upon the use ot' the fire connection for other than fire purposes and to show the amount osuch fusi-eav In connection with such a detectormeter We have provided means to more certain-ly secure a flow of water therethrough when the emergency valve is open, thus providing a check by which to estimate the amount of Water Which passes" through the bypass valve. -At the entrance of the connectionfll through vwhich this meter is supplied,V we prefer to providea divert-ing -iiange 16. which projects slightly within .the main channel, thereby catching and ydivertir-'1g:the
-water to insure a suflicient Howto operate the meter, even when thev valvegQ isfwide open.
an* am which is pivoted at 32 to the 'outer or` l'oWeI'-' -endgof a -trackway 13., which isvsecured-rto or 4forms a part of vthe casing;- thisiitr'ack Way having a slight inclinationzorffdhvvn 'grade Ytoward the pivot l' The! arm 3 to Wh'oh thevalve is 3 secured has two trackway arms 301'- extendingrgoud.-A
ward -or over the valve and forming -a ein tinuation of the traclzway ."nembers 13'. At heir outer ends lthese may Le provided with upturned curves as4 '31, to stop or hold against further travel, any weight mounted tof roll thereon.l vUpon these arms 30, which are inclined downwardly away from their pivots, is placed aY weight, as the ball fr, which will, when the valve is in closed or normal position, roll toward the outer end of this'trackwaythereby holding the valve securely closed.v The leverage given 'the weight-bythese traclway arms issuch that the valve cannot'be raised except an unusual demand be made upon the pipes supplied therethrough, which lunusual demand will reduce'the pressure upon the delivery side .sufficiently to produce an unbalanced pres- -usual and emergency demand ceases, the
weight ofitlie ball, seeking to roll it down the fixed trackway 13, will push gently upon the thenupwardly extended arms 30 and assist the natural 'weight of thvevalve to close it. As soon as the valve has. closed, the
inclination which the arms 30 will then have away from the pi`vot.32,fwill cause the ball to roll to the outer end of these arms, in which position its weightis acting through. a considerable leverageto hold the valve securely closed. In consequence of the rolling movement given the ball it acts with relative fe'ebleness to close the valve when it is open and strongly to keep it closed when it is once closed. The valve therefore requires but little effort from the passing waterto keepitopen, thus producing but little throttling effect upon the water while preventing lifting the valve unless a considerable difference in pressures upon opposite sides of the valve is produced. The valve will thus not be raised unless water is drawn oil in volume much greater than would be required for any purpose except for .putting fires.
By the use .of such a device'it is feasible to draw water throughtlie fire supply pipes for certain uses and also have this amount correctly registered. The detector meter will correctly register the .water thus used so long as the use .is not'at such rate as will open the emergency valve. By yproper proportioning the meter and its connecting pipes the re pipes mayl be employed for such regular needs as are of an intermittent character, such as washing down floors, etc.,
nosiis yweight mounted to roll upon said tracliway,
and a receiving .holder for said weight in position to receive the weightgwhen .it is rolled backward beyond the pivot by the upward swinging of the valve.
' 2. The combination with a valve seat, a valve therefor pivoted above the valve seat to lswing upward and open, a trackway secured to and extending over the valve and, when the valve is in closed position, 'being inclined downward away from the pivot, a weight. mounted to roll upon said trackway,
said trackway permitting thel weightto rolll therefrom. at the pivot end when the valve is raisech' and means for returning the weight to the tracltway when the valve closes.
3. The combination with a valve's'eat., 1a pivoted valve adapted to. close said valve seat, a trackway pivoted at' one end tov swing with the valve, a weight mounted to :roll upon said trackvvay, and away from its pivotwhen the valve is in closed position,
and means, independent of said trackway, to
return the weight to the traclway when the valve closes.
4. The combination with va ley-pass a1 valve controlling said by-pass land hinged to be opened by an unusual rush of water, a trackway secured to said valve to extend from its hinge outwardly over the valve and downwardly inclined toward its outer end.
when the valve is closed,fa fixed trackway sect-ion forming a continuation of said valvesupported trackway beyond ii" pivot and downwardly inclined toward il pivot, and a weiOhtsupported by and adapted to roll a n upon said trackway.
5. A meter by-pass comprising a casing having a through channel ofrelatively large `capacity and a valveseat lsurrounding said channel and provided with connections at each side 'of 'said valve seat for the attach-- ment. of a meter, a valve normally engaging said valve seat to' close its channel, an army constituting a ti'ackway and connected with the valve to be controlled in position there- .by to reverse its anglev of inclinati-on by raising of the valve, a weight supported by and adapted toroll upon said trackway` arm and a fixed, vinclined traclrway receiving said weight when the valve is raised and acting to return the weight to the traeln way when the valve closes.
6.,A meter by-pass comprising a casing liz-ving a through channel of relatively large associated with the meter supplying outlet,
a valve adapted to engage said valve seat and hinged above said seat to open with an unusual increase in the flow of fluid, and a movable-'weight' connected With and moved by'said valve as it raises and thereby shift- -ed into. lposition to relieve the valve of its Weight when the valve is raised, and by gravity shifted into position as the valve drops to add its weight to that of the valve to hold the latter seated.
In testimony whereof We have hereunto affixed our slgnaturesvat Seattle, lashington, this 23rd day of October, 1911.
ADoLF L. BJRKSTAM. JAMES M. FERGUSON.
Witnesses; A vA. F. NICHOLS,
vP. CLINTON BENNETT.