US 2950483 A
Abstract available in
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Description (OCR text may contain errors)
Aug. 30, 196 F. P. RICHARDS mum. FLUSH con-mm.
2 Sheets-Sheet 1 Filed Dec. 4, 1957 Fig. 2
Aug. 30, 1960 F. P. RICHARDS DUAL FLUSH CONTROL 2 Sheets-Sheet 2 Filed Dec. 4, 1957 Tr m 0 C Ni. R P d m F ATTORNEY DUAL FLUSH CONTROL Fred P. Richards, 2835 W. 24th Ave., Denver 11, C010.
Filed Dec. 4, 1957, Ser. No. 700,684
6 Claims. (Cl. 4-67) This invention relates to the flush tanks or water chests conventionally utilized in association with and for the selective flushing of toilets, and has as an object to provide control means selectively actuable to deliver for flushing purposes either the full charge of the flush tank, or, alternatively, a predetermined portion of the said charge, whereby to conserve the amounts of water utilized for such purposes.
A further object of the invention is to provide auxiliary means adapted for convenient operative association with the conventional flushing controls of toilet tanks and water chests to condition said conventional controls for selective actuation to deliver either all or a predetermined portion of the tank charge.
A further object of the invention is to provide an auxiliary control adapted for convenient operative association with the conventional controls of flush tanks and water chests to condition the latter for alternative actuation to release for flushing purposes either all of the tank charge, a predetermined portion of said charge, or the entire charge in a two-stage sequence resulting from successive control manipulations.
A further object of the invention is to provide an auxiliary dual control attachment for operative association with the conventional flushing controls of flush tanks and water chests which is susceptible of ready installation in position of use without significant alteration of the conventional equipment through the application of ordinary skill and the use of customarily-available tools.
A further object of the invention is to provide an auxiliary dual control attachment for operative association with the usual controls of fiush tanks and water chests that is susceptible of convenient adjustment to vary and determine the proportion of the water charge fractions releasable through actuation thereof.
A further object of the invention is to provide a novel and improved dual control auxiliary attachment for operative association with conventional flushing controls of flush tanks and water chests that is simple and economical of production, facile of installation and adjustment, positive and efiicient in operation, and durable in use.
A further object of the invention is to provide a novel and improved construction and operative correlation of elements constituting a dual control auxiliary attachment for operative association in supplementing relation with conventional flushing controls of flush tanks and water chests.
With the foregoing and other objects in view, my invention consists in the construction, arrangement, and operative combination of elements as hereinafter set forth, pointed out in my claims, and illustrated by the accompanying drawings, in which- Figure 1 is a perspective view of a typical conventional flush tank as adapted with the attachment of the instant invention in operative correlation with the conventional flushing controls of the tank, ready for use; a portion of the tank wall being broken away to illustrate otherwise concealed construction.
nited States Patent "ice 2,950,483 Patented Aug. 30, 1960 Figure 2 is a side elevation, on a relatively enlarged scale, of the control assembly illustrated by Figure 1 as positioned with the full charge of water in the tank prior to a flushing operation; structure not essential to an understanding of the invention being omitted and certain conventional elements of the organization being shown in section.
Figure 3 is a fragmentary, detail elevation of the organization according to Figure 2 as viewed substantially from the zone represented by the indicated line 33 of said latter view.
Figure 4 is a top plan View, partially in section, of the organization according to Figure 2 as viewed from the zone indicated by the line 4-4 of said latter view.
Figure 5 is a view similar to Figure 2 representing on a relatively reduced scale a relation of the control elements automatically resulting from an initial actuation thereof directed to partial delivery of the tank charge.
Figure 6 is a view similar to Figure 5 illustrating the disposition of the control elements upon completion of the flushing operation initiated as represented in the preceding view.
Figure 7 is a view similar to Figures 5 and 6 representing the control elements as positioned for full delivery of the tank charge.
Figure 8 is a fragmentary, detail, top plan View of a manipulator appropriate for selective actuation of the improvement of the invention as installed in substitution for a conventional such facility.
Figure 9 is a fragmentary, detail elevation showing the inner face aspect of the manipulator according to Figure 8.
Figure 10 is a fragmentary, detail section taken substantially on the indicated line 1010 of Figure 9.
The increasing importance of water conservation directs attention to the waste of water commonly characterizing conventional flushing of toilets. The water charge of the usual fiush tank or water chest is normally adequate to accomplish a complete and thorough flushing of the associated toilet under the most adverse conditions and is hence much in excess of that required under most favorable conditions. The conventional controls supplied for selective flushing of the toilet are arranged to deliver the entire tank or chest charge at each actuation and are not expedient of adjustment to permit selective delivery of the entire tank or chest charge, at need, and alternative delivery of a less adequate charge at other occasions. Facilities for effecting either complete or partial delivery of the conventional tank or chest charge have been hitherto designed, but such facilities have been somewhat less than satisfactory for various reasons, have in the main been unsuited for convenient attachment to and use with the conventional controls of installations widely in use, and have been frequently less than convenient of selective operation, hence the instant invention has.
been devised to provide a selectively-actuable dual control of low cost that is convenient of operative association with conventional installations of diverse particularity of function for release for flushing purposes of a predetermined portion, or all, of a tank or chest water charge with elimination of the shortcomings and disadvantages of the analogous expedients hitherto known.
In an extensive variation of structural particularity, flush tanks and water chests adapted to the flushing of toilets are alike characterized by a tank chamber 15 adapted to receive and confine an appropriate charge of water elevated by means of the horizontal floor 16 above the bowl of an associated toilet. Water is supplied to the interior of the chamber 15 through a line 17 leading from any suitable water source or supply and arranged to discharge within the chamber 15 through a valve, not shown, under the control of a float 18 disposed to rise water charge therein.
, water charge.
a 3 and fall interiorly of the chamber 15 with the level of the Thus, water inflows to the chamber 15 through the line 17 and fills the said chamber with corresponding elevation of the float 18 until a predetermined maximum water charge is received within'the chamber 15 and the fioatis elevated to close the valve controlling flow through the line 17; lowering of the 7 seat 20, or otherwise, with the line 19 and stands vertically within the chamber 15 at one side of the seat 20 to di'spose its open upper end at the plane of maximum water charge appropriate for the tank or chest installation, so that, even when the seat 20 is closed against flushing use flow therethrough as hereinafter set forth, elevation of the water charge above the upper end of the overflow line 21 is relieved through said line, the seat 20, and the line 19 to establish and maintain a maximum water charge level coincident with the upper end of the overflow line 21.
A buoyant valve plug 22, usually of resilient material, adapted for. sealing coaction with the seat 20 under pressure thereupon imposed by the water charge of the chamber 15 is adjustably connected to one end of a coaxial stem 23 disposed to upstand vertically within the chamber in substantial registration with the center of the seat 20 slidably. through a guide sleeve 24 adjustably supported upon and atone side of the overflow line 21, as by means of a clamp bracket 25, Well above the seat 20 in coaxial registration therewith. The end portion of the stem 23 above the sleeve 24 operatively connects through the slip loop 26 of a link 27 with the free end of a trip lever 28 extending substantially horizontally within the upper portion of the chamber 15 from a manipulating handle 29 journaled through and available exteriorly of the front Wall of said chamber selectively actuable to oscillate the free end of said lever through a limited vertical arc.
Organized as shown and described, the conventional features and elements of the assembly function in reaction to manipulation of the handle 29 to deliver the full tank charge through the seat 29 and line 19 to and with flushing effect upon the associated toilet bowl, and to thereafter automatically recharge the tank for repetition of the flushing operation. With the conventional elements suitably proportioned and interconnected and the chamber 15 charged with water to the approximate level of the upper intake end of the overflow line 21, said 7 elements are disposed and correlated as typified by Figure 2 with the valve plug 22 held to scaling coaction with the seat 20 by pressure of the water thereabove, the float 18 elevated by the water charge to interrupt inflow to the chamber through the supply line 17, and with the free end of the trip lever 28 at the lower limit of its range of oscillation to relieve the link 27 from any tensioning coaction with the stem 23, all in a maintained disposition and correlation appropriate to accomplish a flushing operation. Delivery of the water charge from the chamber 15 through the seat 20 and line 19 ensues upon actuation of the handle 29 to elevate the free end of the trip lever 28 sufliciently for upward displacement of the stem 23 through its guide sleeve 24 by means of the link 27 and consequent elevation of the valve plug 22 away from the seat 20, in which operation the buoyancy of the plug and the travel of the free end of the lever 28 cooperate to lift the plug'well above the seat and out of the influence of the water flow to and through said seat to substantially the position shown by Figure 7 where the plug is held, usually against the lower end of the a 4 sleeve 24, by its buoyancy after return of the trip lever 28 and associated link 27 to the lower limits of their travel range. With the plug 22 uuseated from and raised well above the seat 20 as shown and described, outflow of water from the chamber 15 continues through said seat and the line 19 untillowering of the water charge level within the chamber permits the buoyant plug 22 to descend therewith for ultimate rescaling coaction with the seat 20, now assisted by the influence of the water outflow, and consequent interruption of discharge from the chamber. The float 18 lowers with the level of the water charge outflowing from the chamber 15 to consequently open the valve controlling inflow through the line 17 as the plug 22 returns to its seat 20 subject to the influence of the outflow thereabout, whereby to promptly reestablish a water charge pressure acting upon the plug in supplementing relation to the suction eflt'ect deriving from interruption of the outflow to securely hold said plug to its seat while the chamber refills with elevation of the float 18 and return of the control elements to their initial relation of flushingpotential.
All of the foregoing is but representative of conventional flush tank and flush control organizations similarly as illustrated and hereinafter described.
Adapted to function as a brake automatically and frictionally coactable with the stem 23 to retain the valve 'plug 22 elevated'away from its seat 20 subject to and within the influence of the outflow through said seat under certain predetermined, initial conditions and to release said stern for. return of. the plug to its seat in reaction to the outflow influence upon attainment of subsequent, predetermined conditions, a supplementary, unitary assembly is provided for convenient attachment to the overflow line 21 in position of practical use. In an embodiment susceptible of wide structural variation, the supplementary, unitary assembly is illustrated as comprising a clip 31 adapted to exteriorly embrace and adjustably clamp in fixed relation to the overflow line 21 at a zone of the latter spacedly adjacent and above the clamp bracket 25 and a spaced pair of like arms 31 hinged at their corresponding ends to the clip 30 to extend outwardly thence parallel to and on the opposite sides of a line joining the axes of said overflow line and the stem 23. The arms 31 are of such length as'to span from their connection with the clip 30 to embrace the stem 23 between their free ends, are spaced apart a substantial distance to spacedly overlie opposite sides of said stem, and are adapted tobe adjustably immobilized with respect to the associated clip, as by means of a clamp bolt 32, preferably in an inclined disposition such as to locate their free ends adjacent and just above the guide sleeve 24. The free end portions of the arms 31 are correspondingly apertured to receive and rotatably mount an intermediate portion 33 of an elongated rod of uniform diameter thereby supported with its axis perpendicular to that'of the stem. 23 out of engagement with and in a slight spacing toward the overflow line 21 away from said stem. The rod portion 33 is straight in a length such as to extend at each end well beyond the associated arms 31, and at one end of said portion the rod material is curved through anarc of one hundred and eighty degrees to establish a second straight rod portion 34 spacedly parallel to, in the same plane as, and overlying the portion 33 at such distance from the latter as to span over and in clearing relation across the ends of the arms 31 interportion 34 is terminated at or just outwardly beyond the arm 31 remote from the conjunction of the rod portions 33 and 34 by an abrupt, preferably ninety degree, bend in the rod material efiective to establish the one terminal rod portion 35 as a straight extension substantially perpendicular to the plane common to the portions 33 and 34 and in a direction outwardly past the stem 23 and away from the overflow line 21, upon which portion 35 a counterpoise 36 is mounted at a spacing, preferably adjustable, from the rod portions sand 34. The end of the straight rod portion 33 remote from its conjunction with the portion 34 is established by an abrupt bend, on the order of ninety degrees, in the rod material productive of a straight rod portion 37 directed generally parallel to and in a direction opposite to that of the portion 35 partially across and in clearing relation outwardly beyond the overflow line 21 and associated elements, and from an outer end of said portion 37 substantially and spacedly overlying the overflow line 21 the other terminal portion of the rod material extends as a straight length 38 angularly related to the portion 37 to incline upwardly and outwardly of the assembly in a length equalling or surpassing the height of the said line 21. The terminal length 38 of the rod material slidably mounts a buoyant member 39 for free reciprocation therealong', and a stop 49 is adjustably associated with said length 3-8 between the rod portion 37 and the member 39 to limit and determine travel of said member on said length in one direction.
Organized and installed as shown and described and with the weight and effective leverage of the member 39 proportioned to overcome the counter-action of the counterpoise 36, the assembly of the attachment is adjusted to give effect to the principles of the invention through such angular shift and subsequent immobilization of the arms 31 as will serve to position the rod portion 33 closely and spacedly adjacent, but out of contact with, the stem 23 and a fixing of the stop 40 to the rod length 38 at a point therealong appropirate to determine inward shift of the member 39 thereon in accordance with considerations hereinafter elaborated. As so mounted and adjusted, and with no water charge in the chamber 15 elfective to elevate the member 39,- the weight and leverage of the latter acts to overcome the effect of the counterpoise 36 and to rock the several rod portions and associated elements in the free ends of the arms 31 and about the axis of the rod portion 33 to the position shown in Figure 7 wherein the rod portion 34 is retraced away from contact with the stem 23 to rest against upper margins of the arms 31 as a stop limiting angular displacement of the rod unit in one direction, thus freeing the stem 23 and its adjuncts for operation in the conventional manner above described. As a water charge accumulates within the chamber 15, the rising level thereof first sustains and lifts the buoyant member 39 with reduction of its effective weight to such degree as permits the counterpoise 36 to rock the rod unit to the position shown in Figure 6, wherein the rod portion 34 is shifted from engagement with the upper margins of the arms 31 but remains out of contact with the stem 23, and further rise of the water level as the charge approaches a maximum acts to shift the member 39 upwardly on the length 33 and away from the stop 46 with consequent further rocking of the rod unit to the positions represented by Figures 2 and 5, wherein the now unbalanced weight of the counterpoise acts to engage the rod portion 34 against the adjacent side of the stem 23 with a force frictionally resistive of stem displacement longitudinally in either direction. Thus, the attachment of the instant invention in no way modifies or interferes with the conventional procedures incident to automatic recharge of the chamber 15 subsequent to a flushing operation and reacts to such procedures only to apply the rod portion 34 in engagement against and with frictional braking eflect upon the stem v23.
With the attachment in place as shown and described, there is no alteration of or interference with the conventional operations incident to the usual delivery of the chamber charge for a full, or maximum, flushing eflect other than the frictional resistance to elevation of the stem 23 imposed by the rod portion 34 which yields readily to oscillation of the trip lever 28. Customary actuation of the trip lever 28 by means of the handle 29, as above set forth, acts in a usual'manner to elevate the stem 23 against the friction imposed by the rod portion 34 and to lift the valve plug 22 away from its seat and out of the influence of the consequent water outflow to the position represented by Figure 7, where said plug is retained as above explained, and further secured by the pressure of the rod portion 34 against the stem 23, as the chamber charge drains through the so-opened seat 20. As the water charge level subsides during the full flushing discharge, the member 39 lowers therewith and first slides downwardly along the rod length 38 to engagement against the stop 49 and thereafter swings on and with said length 33 to rock the rod unit for the shift of the rod portion 34 away from the stem 23 and to engagement with the upper margins of the arms 31, as in Figure 7, whereby to release said stem for return of the valve plug 22 to coaction with the seat 20 precisely as though the attachment were not present.
Operatively conditioning the attachment for realization of its intended purposes, provision is made for selective, two-stage actuation of the trip lever 28 with consequent differential elevation of the stem' 23 and its associated valve plug 22, whereby to accommodate elevation of said plug out of the influence of the outflow through the open seat 2% as above explained, and, alternatively, to establish a lesser elevation of said plug suflicient to adequately open the seat 20 while retaining the plug within the influence of the outflow therethrough, and a practical arrangement for such purpose is represented by Figures 8, 9 and 10. As shown, a sleeve 41 conventionally fixed through the usual appropriate opening in the front wall of the chamber 15 is adapted to rotatably and slidably mount the customary perpendicularly-related terminal portion 23' of the trip lever 28, or the equivalent thereof, entered coaxially therein to fixed engagement with an actuating handle 29' thereby disposed exteriorly of the chamber 15 in position for selective manipulation eflective to oscillate the free end of said lever in both directions through a vertical are within the limits determined by a stop lug 42 fixedly outstanding from the sleeve 41 for coaction with a complementary stop, not shown, fixed Within and movable with the hub of the handle 29', as is ordinary practice in the analogous art. An expansive coil spring 43 is pocketed within the sleeve 41 about the lever portion 28' in bearing engagement between an end of said sleeve and the hub of the handle 29' to yieldably urge the handle away from the chamber Wall, and a stud 44 fixedly projects radially from said lever portion 28 adjacent and in position to bear against the inner end of the sleeve 41 as a stop limiting axial displacement of the lever portion 28 in opposition to the pressure of the spring 43. Selective, two stage actuation of the trip lever 28 by means of the handle 29 as organized according to Figures 8, 9 and 10 is made feasible through the provision of a shallow notch 45 radially intersecting and opening axially from the end of the sleeve 41 remote from the handle 29' in an angular extent somewhat exceeding the corresponding dimension of the stud 44, within which notch said stud is constrained to enter by the pressure of the spring 43, and said stud and notch are so correlated, angularly, as to enter the stud in and adjacent an end shoulder of the notch with the excess angular extent of the notch leading the stud in the direction of stud rotation incident to flushing actuation of the trip lever 28 when said lever is in the inoperative, lowered disposition represented by Figures 1, 2, and the full line showing of Figure 9;
The angular extent of me notch 45 is such as to accommodate therein an angular play of the stud 44 adequate to reflect elevation of the'free end of the'lever 28 sufficiently to lift the valve plug 22 from its seat and into full opening relation therewith while yet subject to the reseating influence of the outflow'thereabout,
. whichlift of the valve plug, as represented by Figure 5,
is considerably less than the conventional lift charactciistic of a full flushing operation. The angular play of the stud 44 accommodated by the notch 45 is a lesser portion of that possible for the handle 29 and accounts for but an initial'arc of handle manipulation, so that, upon inward shift of said handle against the spring 43 and consequent release of the stud 44 from its notch '45, the full range of handle manipulation is available to effect the conventional actuation of the trip lever 28 incident to a complete flushing delivery of the chamber charge; a slight beveling of the notch end shoulder leading in the direction of stud displacement, as at 46, Figure 8, facilitating such release of the stud from its notch."
With the unit attachment of the invention operatively in place as hereinabove described, the handle organization according to Figures 8, 9 and 10, or the substantial equivalent, conditions the attachment to selectively effect a partial, a complete, or a progressively partial and complete discharge of the chamber charge. A full range actuation of the handle 29' under inward pressure adequateto release the stud 44 from the notch 45 oscillates the trip lever to effect a full lift of the valve plug 22 for consequent delivery of the entire chamber charge with maximum flushing effect in accordance with the usual cycle characterizing the conventional controls, as hereinabove detailed. When a flushing operation conservative of chamber charge is desired, the handle 29' is actuated to but that extent permitted byplay of the stud 44 in its notch 45 and the valve plug 22 is consequently elevated to open outflow from its seat 20 a distance insutficient to remove said plug from the reseating influence of the outflow thereabout, as in Figure 5, in which disposition the said plug is retained by the friction of the rod portion 34 on the stem 23 while outflow progresses. As the water charge level subsides with the valve plug but partially elevated, consequent lowering of the member 39 acts at a predetermined stage, variably established by the adjustments and correlations inherent in the unitary attachment organization, to rock the rod unit for release of the rodrportion 34 from the stem 23 and consequent freeing of said stem which permits reseating of the valve plug, as in Figure 6, in reaction to the outflow influence to which it is subject; such reseating of the valve plug arresting discharge of the chamber contents and initiating recharge of the chambar, as is fully obvious. Manifestly, a partial flushing accomplished as just set forth may be extended to completion of a full flushing operation through an immediately subsequent further manipulation of the handle 29' through the range of actuation available when the stud 44 is released from its notch, as 'hereinabove explained, there being no impediment whatever to conventional actuation of the principal controls when partial release of the water charge has occasioned release of the rod portion 34 from the stem 23.
Since changes, variations, and modifications in the form, construction, and arrangement of the elements shown and described may be had without departing from the spirit of my invention, I wish to be understood as being limited solely by the scope of the appended claims,
rather than by any details of the illustrative showing and foregoing description.
I claim as my invention:
1. The combination with a flush tank adapted to confine a charge of water, a gravity outlet from said tank,
' a stem guided for vertical, longitudinal reciprocation withinsa-id tank, a buoyant valve plug shiftable with said stem into and away from coaction with said outlet, and means selectively actuable toshift said stem for eleva tion of said plugaway from its seat, of a unitary assembly rockablejabout a horizontal rod portion journaled spacedly adjacent said stem, a rod continuation spacedly parallel to said journaled portion rockable with said assembly between frictional engagement against said stem andfixed stop means remote from the stem, oppositelydisposed arm portions respectively fixed to and carried by said journaled rod portion and the spacedly-parallel continuation thereof in and substantially perpendicular to the rod portion rockably mounting said assembly, a counterpoise on that 'onerof said arm portions carried by the rod continuation at the side of the stem remote from the rock-able mounting of the assembly adapted to urge said rod continuation against the stem, and a buoyant member on the otherarm portion opposing and effective at times to overcome the action of said counterpoise, wherein said buoyant member is slidably mounted for shift longitudinally along its asso ciated arm portion and an adjustable stop on the latter limits shift "of said member inwardly of the arm portion toward the rockable mounting of the assembly;
2. The combination with a flush tank adapted to con fine a charge of'water, a gravity outlet from said tank, a stem guided for vertical, longitudinal reciprocation within said tank, a buoyant valve plug shiftable with said stem into and away from coaction with said outlet, and means selectively actuable to shift said stem for elevation of said plug away from its seat, of a unitary assembly rockable about a horizontal rod portion journaled pacedly adjacent said stem, a 'rod continuation spacedly parallel to said joumaled portion rockable with said assembly between frictional engagement against said stem and fixed stop means remote from the stem, oppositely-disposed arm portions respectively fixed to and carried by said journaled rod portion and the spacedlyparallel continuation thereof in and substantially perpendicular to the rod portion rockably mounting said assembly, a counterpoise on that one of said arm portions carried by the rod continuation at the side of the stem remote from the rockable mounting of the assembly adapted to urge said rod continuation against the stem, and a buoyant member on the other arm portion opposing and effective at times to overcome the action of said counterpoise, wherein the arm portion supporting the counterpoise is generally horizontal, the arm portion supporting the buoyant member inclines divergently from said stem and upwardly of the tank, said buoyant mem her is slidably mounted for shift longitudinally along such inclined arm portion, and a stop on the latter adjustably limits shift of said member inwardly of the associated arm portion, whereby adjustment of said stop is efiective to determine the water level stage at which said member reacts to overcome the influence of the counterpoise.
3. The combination with a flush tank adapted to confine a charge of water, a gravity outlet from said tank, a stem guided for vertical, longitudinal reciprocation Within said tank, a buoyant valve plug shiftable with said stem into and away from coaction with said outlet, and means selectively actuable to shift said stem foil elevation of said plug away from its seat, of a unitary assembly rockable about a horizontal rod portion journaled spacedly adjacent said stem, a rod continuation spacedly parallel'to said journaled portion rockable with said assembly between frictional engagement against said stem and fixed stop means remote from the stem, op-
adapted to urge said rod continuation against the stem, and a buoyant member on the other arm portion opposing and effective at times to overcome the action of said counterpoise, wherein said rockable assembly is constituted as a single length of rod material of uniform diameter conformed to provide an intermediate portion adapted for journaled mounting in horizontal disposition spacedly adjacent the stem, a second straight continuation portion spacedly paralleling said intermediate portion and rockable therewith into engagement with and away from the stern, a terminal portion substantially perpendicular to and at one end of said continuation portion adapted for generally horizontal disposition in supporting relation with the counterpoise, a second terminal portion at one end of and in a plane substantially perpendicular to said intermediate portion directed oppositely to said first terminal portion and diverging from said stern upwardly of the tank in slidable supporting relation with the buoyant member, and a stop adjustably engaged with the second terminal portion determinative of member travel inwardly thereon.
4. The combination with a flush tank adapted to confine a charge of water, a gravity outlet from said tank, a stem guided for vertical, longitudinal reciprocation within said tank, and a buoyant valve plug shiftable with said stem into and away from coaction with said outlet, of means selectively actuable through unidirectional arcs of difierent amplitudes to elevate said plug away from said outlet to a position Within the influence of the consequent outflow therethrough, and, alternatively, to elevate the plug away from the outlet to a position remote from such influence, and means automatically reactive to level variations of the tank water charge to frictionally engage said stem and so retain the plug in either of its elevated dispositions when the water charge exceeds a predetermined intermediate level and to release said stem at said latter level, wherein the means selectively actuable to elevate the plug comprises a trip lever mounted for oscillation through a vertical arc interiorly of the tank on a perpendicularly-related terminal portion slidably and rotatably supported through a wall of the tank, a link operatively intercoupling said stem and the free end of said lever, an actuating handle fixed to the end of said lever terminal portion exteriorly of the tank, a spring yieldably urging said handle away from the tank, a stud on the lever terminal portion coacting with the associated support to oppose the action of said spring, and a radial notch in said support complementary to said stud determinative of the range of stud oscillation when said handle is at the limit of its separation from the tank.
5. A supplementary dual flush control attachment for flush tanks adapted to confine a charge of water having in conventional construction and association a gravity outlet, a stem guided for vertical, longitudinal reciprocation therein, a buoyant valve plug shiftable with said stem into and away from coaction with said outlet, a trip lever selectively actuable to elevate said stem and plug, and an overflow line spacedly paralleling said stem interiorly of the tank, comprising a mounting adapted to operatively iii support said trip lever on a tank wall for alternative, two-stage actuation through unidirectional arcs of different amplitudes, and a unit assembly adjustably mountable upon said overflow line automatically reactive to level variations of the tank water charge to frictionally engage said stem when the water charge exceeds a predetermined intermediate level and to release said stem at said level, wherein the mounting for the trip lever includes a fitting mountable through the tank wall adapted for slidable and rotatable coaction with a perpendicularly-related terminal portion of the conventional trip lever engageable therethrough, an actuating handle fixable to the end of said terminal portion exteriorly of the tank, a spring within said fitting operable to yieldably urge said handle to the limit of its separation from the tank, and means on the end of said fitting opposed to the trip lever coactable with and to limit angular displacement of the latter when said handle is at its maximum separation from the tank.
6. A supplementary dual flush control attachment for flush tanks adapted to confine a charge of water having in conventional construction and association a gravity outlet, a stem guided for vertical, longitudinal reciprocation therein, a buoyant valve plug shiftable with said v stem into and away from coaction with said outlet, a trip lever selectively actuable to elevate said stem and plug, and an overflow line spacedly paralleling said stem interiorly of the tank, comprising a mounting adapted to operatively support said trip lever on a tank wall for alternative, two-stage actuation through unidirectional arcs of difierent amplitudes, and a unit assembly adjustably mountable upon said overflow line automatically reactive to level variations of the tank Water charge to frictionally'engage said stem when the water charge exceeds a predetermined intermediate level and to release said stem at said level, wherein said unit assembly consists of a clip adapted to adjustably embrace the overflow line, spaced, parallel arms adjustably carried by said clip adapted to span between said overflow line and said stem, an element journaled through the free ends of said arms for rotation about a horizontal axis thereby positionable spacedly adjacent said stem, a second element offset from said first element and rockable therewith between a position efiective for frictional engagement with the stem and stop engagement with upper margins of said arms, gravity-responsive means urging said second element into the position of potential engagement with the stem, and buoyant means adapted for reaction to level variations of the tank charge opposing and effective at times to overcome the influence of said gravity-responsive means.
References Cited in the file of this patent UNITED STATES PATENTS 2,001,390 Lester May 14, 1935 2,686,921 Ezzell Aug. 24, 1954 2,690,567 Quebbeman Oct. 5, 1954