US2007453A - Automatic valve operating device - Google Patents

Description

July 9, 1935. G. M. LARDNER AUTOMATIC VALVE OPERATING DEVICE Filed July 19, 1954 Patented Jnly 9, 1935 f.

AUTOMATIC VALVE-OPERATING DEVICE i [George Malcolm Lardner, Winnipeg, lvfanitoba, A Canada ApplicationJuly 19, 1934, Serial No. 735,962`

t 6 Claims.

- My'invention relates to flushing apparatus,

" having particular reference to' a valve operating device forfeffecting aperiodic discharge of a liquid.

5L' The object of myinvention is to provide an improved .valve operating device for a flushing 1 or similar apparatuseiective to provide a periodic discharge of the iiushingiliquid. In par-` i ticular my` device provides forV a positive and novel means for the'fabrupt actuation of l' saidabrupt seating and unseating of the ilushing passagevalve in av flushing' apparatus and includes A valve to...secure an instantaneous operation of the valve under apredetermined rise and fall oi liquid. i. i

Other objects of myv invention will become apparent from the,accompanyingldescriptiontaken j infconjunction with the' drawing wherein like .fchar'acters of reference indicate likewparts .ing tank in'wliichmy` improved iiushingappathroughout the different views and wherein:

Fig. `1 is a.` vertical view of `a reservoir or flushratus is mounted, the latter `being illustrated 'partly broken awayyandshowing the valve in 25 open position. 1 n Fig.,2 is a vertical sectionalview, partly in section and partly broken away and showingthe valve in closed position. j f f Fig. 3 vis a topfplan A'view of the 'flushing mechanism.

Having reference tothe laccomp'anying/ `draw-Y `ing l indicates a reservoir or flushing tank'having lthe'flushingpassage or discharge outlet pipe i 2. Theflushing'apparatus is 'designed for use in a reservoirg'ofthe character wherein a periodicdischarge of liquid for flushing or like purposes-isi'requiredigrf; Injy association with the-` tank l a valve controlled inlet, of the usual type for such purposes, would be used, communicating with a source of liquid supply whereby a continuous inflow of liquid would be provided.

' Threadably attached to the discharge pipe 2 is a chamber 3 having an integrally formed valve body 4 with port 5 communicating therebetween, said body 4 having ports 6 for admission of liquid thereto. The valve body d is surmounted by an integrally formed block 1 in which is threadably inserted an upstanding tubular guide member 8.

For closure of the port 5 a valve 9 isprovided adapted to be seated thereon, said valve having a lifting,y rod l slidable in a suitable opening `provided in the block 1.

Slidable on the guide member 8 is a vertically movable element -which includes a cylindrical vided with opposit'ely disposed laterally and up- I,wardlyf extending arms I3--l3, each having a projectingvportion i4 in angular vrelationslfiip Vtherewith. Saidy headblock l2 is provided with asuitable opening through which thelifting rod lil is movable; The junctions of each ofthe Vprojecting portions I4 with the main portions; of the arms 83-93 provide lhorizontal grooves, located as indicated bythe reference'numerals Threadably mounted on the upper end ofthe lifting rod Ill isa block [6 having horizontal grooves ll on opposite faces, Said grooves being alignable in .parallel relationship to the grooves- For effecting an abruptmovementof the lifting rod ill to instantaneously open or close the port by the valve 9, yielding members-igenerally indicated at I8 and IS, are provided normally `holding the block IS raised or lowered `with the grooves l5positioned above or below `the `horizontal plane ofthe grooves Il. Each of said members includes a. tubular section 20 having pins 2l and 22 slidable in the ends thereof, said pins `being outwardly urged by an interposedfcoiled spring 23.- The points of the pins 2i and 22 are formedA straight edged (as more' clearly apparentin Figure 3) and are respectively engageable ino-the grooves lol and l5.`

The liftingrod l0 is freely movable within certain limits and the action of the yieldingmembers `I8 and.l 'is serves 4toQmove the block .l51with its attached ,liftingrodabove orbelow an intermediate pointgof. balance of; Said members. `When vthe block I6 is above such point of balance, (see Figure l) the valve 9 is elevated clearing the port 5, while-when said block i6 is below such point of balance the valve 9 is lowered to close the port 5. (See Figure 2.)

For instituting action of the yielding members to effect the raising and lowering `of the lifting rod, float actuating mechanism is provided. Integrally formed on the block l vis a projection lug 24 with the end thereof reduced as indicated by 24' to form a bearing on which is mounted a rocking arm 25. A capscrew 25 threaded into the end of the lug 24, serves to hold the rocking arm in place. In one end of said rocking arm is threadably inserted a float carrying rod 21 with a float 28 of the usual hollow construction secured thereto. The other end of the rocking arm Cil is connected by a cross arm 29 and link 30 with a bracket 3| integrally formed on the sleeve I I.

Pivotal movement of the rocking arm 25 as a result of the rise or fall of the float 28 when liquid is introduced or discharged from the chamber I produces, through the cross arm 29 and link 30, a movement of the sleeve II inversely to the movement of said float.

The upward travel of the sleeve I I is limited by a stud 32 threadably secured in the guide member 8 and travelling in an elongated slot 33 in the sleeve I I.

An overflow pipe 34 is provided attached communicating with the pipe-section 3.

In the operation of the device the mechanism is arranged with the valve 9 seated to close the port 5 when the iioat 28 is depressed (see Figure 2). A ow of liquid into the chamber I serves to elevate the float 28 and, through operation of the rocking arm 25 to depress the sleeve II. A

i downward movement of the sleeve II carries the outer ends of the yielding Amembers I8 and I9 downward until said members pass beyond their horizontal point of balance. Such movement contracts the springs 23 which operate to impart an upward thrust to the block I6 when the point of balance has been passed. This upward thrust elevates the lifting rod I0 abruptly to unseat the valve 9 and open the port 5, allowingY discharge of the liquid in the chamber I through the flushingv passage 2.

A reversal of movement of the float 28 caused by the emptying of the tank I would produce an opposite movement of the mechanism and cause an abrupt depression of the valve 8 to close the port 5.

Considerable variation in the structure would be permissible without departure from the spirit and scope of'my invention asy dened in the appended claims.

`vertical movement of said element to impart an abrupt endwise thrust to said rod inversely to the movement lof'said element.

2. A flushing apparatus valve operating device embodying a yvalveA lifting rod, a block attached jto said'rod, a vertically'lmovable element, said elementincluding oppositely disposed arms between whichsaid 'rod is located, said arms and `-block havingv alignable grooves, -and yielding members interposed between said arms and rod in engagement with said grooves, said members being effective on vertical movement of said element to impart an abrupt endwise thrust to said rod inversely to the movement of said element.

3. A flushing apparatus valve operating device embodying a valve lifting rod, a vertically movable element, said element including oppositely disposed arms between which said rod is located, and yielding members interposed between said arms and rod, said members being directed normally above or below an intermediate point of balance, and said members comprising tubular sections, pins slidable in the ends of said sections and engageable with said arms and rod, and coiled springs in said tubular sections between said pins and 'tensionable upon movement of said members to a point of balance.

4. A flushing apparatus including a tank having a flushing passage, a valve for closing said passage, a lifting rod on said valve, a vertically movable element, said element including oppositely disposed arms between which said rod is located, yielding members disposed between said arms and rod, said members being operable on vertical movement of said element to impart an abrupt endwise thrust to said rod eifective to open or close said valve, and iioat actuated means for imparting vertical movement to said element.

5. A flushing apparatus including a tank having a flushing passage, a valve for closing said passage, a lifting rod on said valve vertically movable, means limiting the upward movement of said rod, a vertically movable element, yielding members engageable between said element and rod, said members being operable on vertical movement of said element to impart an abrupt endwise thrust to said rod inversely to the movement of said element, and float actuated means for imparting vertical movement to said element.

6. A flushing apparatus including a tank having a flushing passage, a valve body having a port communicating with said passage, a valve controlling said port, a lifting rod on said valve, said rod being vertically movable to seat and unseat said valve, a tubular member on the valve body concentrically mounted relative to said lifting rod, a sleeve slidable on said tubular member, said sleeve having oppositely disposed upwardly extending arms, yielding members engageable between said arms and lifting rod, said members being operable on vertical movement of Said sleeve to impart an inverse endwise thrust to said lifting rod, and float actuated means for imparting vertical movement to said sleeve.

GEORGE MALCOLM LARDNER.

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