US2839333A

US2839333A - Inlet fitting

Info

Publication number: US2839333A
Application number: US474205A
Authority: US
Inventors: Jack M Ulanovsky; Richard O Lightfoot
Original assignee: Paddock Pool Equipment Co Inc
Current assignee: Paddock Pool Equipment Co Inc
Priority date: 1954-12-09
Filing date: 1954-12-09
Publication date: 1958-06-17
Anticipated expiration: 1975-06-17

Description

June 17, 195s J. M.V ULANOVSKY T AL 2,839,333

INLET FITTING Filed-Dec. 9, 1954 w MAN Q H4 msm VW64WV. www... uw Mm KK c? A Y 3.3

ATT new United States Patent D INLET FITTING Jack M. Ulanovsky and Richard O. Lightfoot, Los Angeles, Calif., assignors to Paddock Pool Equipment Co., Los Angeles, Calif., a corporation of California `Apparati@ December 9, 1954, serial Nq. 474,205 4 claims. (ci. 299-139) This invention relates to water inlet fittings for swimming pools, and more particularly to water inlet fittings having both forward and lateral discharge openings.

It is customary to provide water inlet fittings for swim ming pools that discharge the water into the pool through axial or forward discharge openings. A plurality of these ttings may be embedded in the walls of the pool at predetermined spaced intervals and connected in series to a single source of water supply.

This invention contemplates the construction of water inlet fittings having lateral discharge openings, as well as the forward discharge openings, the lateral discharge openings of the fittings being positioned substantially ush with the wall.

The primary object and accomplishment of the invention is the provision of water inlet fittings for swim` ming pools having both forward and lateral discharge,

openings, so that a part of the water may be directed adjacent the walls of the pool through the lateral discharge openings for wall cleansing purposes, and wherein valving arrangements are provided for regulation of the relative volumes discharged axially and laterally.

In accordance with the invention, the valving is arranged so that flow through the two sets of` openings is interrelated. By adjusting 'flow through the forward openings more or less uid will be directed through the lateral openings. Since it is contemplated that a series of the nozzles will be used around the pool, the valving is effective to provide a generally equal ow rate from each nozzle even though the pressure may diminish along the pressure pipe to which the nozzles are connected. If all the .connecting pipes are of the same diameter, the nozzles may be set so that the forward outlet openings diminish in area, moving from the highest pressure position to the lowest. Or if the connecting pipes are arranged in increasing diameters as the inlet pressure decreases, the nozzles offer the advantage that they can be adjusted to give additional pin point regulation. When the pool has been emptied, the forward discharge openings may be closed and water discharged only from the side discharge openings to scour an area of the pool wall around each outlet. When the pool is filled, the valving means is adjusted to send a part of the discharge axially in the normal manner, and a part laterally, to establish a continuous wall cleaning action about the fitting.

Two forms of the invention are disclosed herein. In the first form the inlet fitting includes a hollow casing having an inlet neck and a flared outlet mouth. Within the mouth there is mounted a grill plate having a number of holes drilled therein. A cover member is aflixed to the plate, but spaced from it so that an annular lateral discharge area is provided. The cover member rotates to act as a shutter valve; i. e., when outlet holes within it register with the holes in the grill plate, liquid can be discharged forwardly. Since lateral ow is never closed off, it will be apparent that positioning the cover plate to seal ott more or less of the forward discharge ports will also govern the volume of lateral discharge.

Patented June 197, 1958 ce l In the second embodiment disclosed the cover member is permanently affixed to the casing. Forward discharge openings are cut out of the cover member. A shutter plate is movably mounted within the cover member to provide valving action. Since a number of radial ports are drilled into the cover member, the valving action will increase lateral ow as the forward flow is closed oi.

Accordingly it may be stated that a prime object of the invention is to provide a nozzle capable of controlled ow both forwardly and laterally.

It is another object ofthe invention to provide a fitting through which fiuid may flow in either of two parallel paths, the valving of one path controlling flow along the other.

It is a further object of the invention to provide a f1tting from which forward ow may be valved with the result that lateral tlow is controlled thereby.

It is a further object of the invention to provide an inlet fitting for use in cleaning the side Walls of a swimming pool by valving a forward ow to control lateral discharge which is effective to scour a wall area about the fitting.

Other objects and advantages will become apparent in the course of the description taken in conjunction with the following drawings:

Fig. 1 is an external view of the fitting showing both forward and lateral flow with respect to the side wall of a swimming pool;

Fig. 2 is a front view of one embodiment of the fitting;

Fig. 3 is a sectional view of the same embodiment, taken along the line 3 3 of Fig. 2;

Fig. 4 is a front view of a second embodiment; and

Fig. 5 is a sectional view taken along the line 5-5 of Fig. 4.

Referring now to Fig. 1, it will be seen that fitting 11 is normally mounted within side wall 12. Connecting pipe 13 supplies water from a pressure pipe, not shown. By means of the unique valving action of the invention, there is provided a controlled forward ow perpendicular to the wall 12, and also a lateral ow along the surface of the Wall.

ln the embodiment illustrated in Fig. 2 and Fig. 3, body casing 16 has an inlet neck 17 which is internally threaded for connection with pipe 13. The casing 16 flares outwardly to a discharge mouth 18. The casing is cast so there are upstanding lugs 21 within the mouth 18. Lugs 2.1 are internally tapped to provide thread engaging surface for screws 22. Screws 22 securegrill plate 25 against spacers 26. As will be seen best in Fig. 3 the spacers determine the distance 27 between the end of mouth 18 and the inturned annular ange 29 of cover member 30. This distance can of course be varied depending on optimum operating conditions to be attained.

Cover member 3l) is carried adjacent grill plate 25 by means of central screw 31. A plurality of outlet ports 35 are drilled into the cover member. These can be brought into register with holes 36, which are drilled out of grill plate 25.

In operation, it may be seen that water will ow through inlet neck 17 and till the mouth 18 of the casing.

Two parallel discharge paths are then possible. Water may iiow laterally through the annular passage 27 and/or it may flow through holes 36 and discharge ports 35. If member 30 is set so that the holes and ports are completely in register maximum forward flow will result. In intermediate or closed relation forward discharge pressure will be diminished or cut off and lateral discharge pressure and flow correspondingly increased. This interdependent valving action can be utilized to give desired output at any one fitting, and it can also be used to provide an optimum operating condition for a series of fittings all tied to the same pressure pipe.

It will be seen that the lembodiment illustrated in Figs. 4 and 5 is generally similar to that illustrated in Figs. 2 and 3. In the interests of simplicity like parts have y-been identically numbered, but are primed.

It 'should be noted, 1that the cover member Sti is permanently and immovably fastened to the body casing i6 by means of screws 22. In this embodiment shutter plate 25 rotates within the cover member to provide the valving action. Also, instead of lateral flow occurring through annular discharge area 27, flow is through ports 27 which are drilled into flange 29. These ports 27" may be spaced through only 180 of are as shown in Fig.

4, or in any other preferred number of degrees around the periphery of the cover member 30. The illustrated 180 extent of arc is desirable when the fitting is installed in the pool close to the water level, in that discharge is then .downward only, and is prevented from rising above the water level.

In operation of this second embodiment, ow is through inlet neck 17 and within mouth 13. The setting of `shutter plate 2.5' determines the relative division of water between the forward and lateral Hows. Since iluid pressure is eifective to press the movable valve grill plate 25' against the cover member 36', the embodiment of Figs. 4 and 5 will tend to maintain a set valving position somewhat better than will the embodiment of Figs. 2 and 3.

It will be seen that various changes may be made as a matter of design but which will still be within the scope of the invention as described in the claims.

We claim:

1. An inlet tting comprising: a casing having a fluid passage extending therethrough, a first apertured plate extending across one end of the passage and rigidly iixed to the casing, a second apertured plate bearing atly against and rotatably adjustable on the first plate, said plates each having a plurality of spaced openings therethrough, the openings in said plates being similarly located relative to the axis of rotatable adjustment of the second plate so that all of the openings in the latter plate are registered with openings in the rst plate in one relative position of the second plate on the first piate to form a plurality of forward discharge openings and said second plate being adapted to be angularly adjusted from said position to vary the effective size of said openings, there being at least one lateral discharge opening communicating with said passage directly behind said plates, said angularadjustment of the second plate being adapted to simultaneously control in inverse proportion :duid flow through said forward and lateral discharge openings.

2. An inlet fitting comprising: a casing having a ytiuicl passage extending therethrough, 'a tirst apertured plate extending across one end of said passage, means rigidly mounting said plate on and in spaced relation to the adjacent end of the casing, a second apertured plate rotatable on and bearing tlatly against the outer surface of the first plate, said second plate including a peripheral flange extending toward said adjacent end of the casing and terminating in slightly spaced relationship thereto to define therewith a lateral discharge opening communicating with said passage directly behind the rst plate, Athe apertures in said plates being registered in one position of the second plate to form forward discharge openings, the second plate being adapted to be angularly adjusted from said position to vary the size of said forward openings `and thereby simultaneously control in inverse proportion iiuid ilow through said forward and lateral discharge openings.

3. The subject matter of claim 2 wherein said means comprises removable spacer means whereby the effective size of said lateral discharge opening may tbe varied by interchange of said spacers with spacers of a different size.

4. An inlet fitting comprising: a `casing having a fluid passage extending therethrough, a closure rigidly iixed to one end of the casing and including an aperturcd plate portion extending across the adjacent end of said passage, au apertured plate rotatable on and bearing datly againstthe inner surface of said plate portion, said closure being formed with at least one radially directed opening cornmunicating with said passage directly behind said plate and forming a lateral discharge opening, said plate and plate portion each having a plurality of openings therethrough, the openings in said plate and plate portion being registered in one position of the plate to 'form a plurality of forward discharge openings, and said plate being adapted to 'be angularly adjusted from said position to vary the effective size of said forward discharge openings and thereby simultaneously control in inverse proportion fluid flow through said forward and lateral discharge openings.

References Cited in the tile of this patent UNITED STATES PATENTS 302,542 Clemens luly 27, 1884 2,530,808 Cerasi Nov. 21, 1950 2,570,828 Martin Oct. 9, 1951 FOREIGN PATENTS 22,089 Great Britain of