US2166758A - Pump - Google Patents

Description

0. FRANCK Jul 18, 1939.

PUMP

Filed Dec. 16, 1936 INVENTOR.

Osage FTefi/VCK, fiafl w. A

ATTORNEYS Patented July 18, 1939 PATENT OFFICE PUlWP Oscar Franck,

New York, N. Y.

Application December 16, 1936, Serial No. 116,099

1 Claim.

My invention relates to pumps and more particularly to pumps designed for pumping liquids and has for its object to provide a pump of small dimensions constructed and operating in a novel manner to develop a relatively high pumping power. The invention contemplates further a pump of the indicated type which is particularly adapted for use in connection with fountains and especially with miniature fountains and the like. Other more specific objects will appear from the description hereinafter and the features of novelty will be pointed out in the claim.

In the accompanying drawing, which illustrates an example of the invention without defining its limits, Fig. 1 is a sectional elevation of the novel pump embodied in a miniature fountain; Fig. 2 is a horizontal section taken approximately on the line 22 of Fig. 1; Fig. 3 is a similar view on the line 33 of Fig, 1; Fig. 4 is a perspective view, partly in section, of a part of the pump casing; Fig. 5 is a perspective view of a second part of said pump casing; Fig. 6 is a detail plan view of an interior element, and Fig. 7 is a detail side view thereof.

For convenience of description the novel pump has been illustrated in a form adapted particularly for fountains, and more especially miniature fountains such as are combined with aquariums; it is therefore to be distinctly understood that the selected exemplification of the invention in no sense defines the limits thereof either as to details of construction or as to its scope of use.

In the form shown in Fig. 1, the casing of the novel pump consists of a main section and an auxiliary section II, said sections being detachably connected with each other in any conven" tional manner as by means of co-operating flanges l2 and screws l3. The main section ll! of the casing is provided with an outlet chamber and an outlet l4 leading therefrom; the exit end of said outlet l4 may, as illustrated, accommodate a perforated cap I5 either premanently or removably fastened in place in any convenient way. The auxiliary section II, as shown in Fig. 5, is provided with a slot [6 in its annular wall which cooperates with an internal element of the pump to function as a valve as will appear more fully hereinafter; in the specific form disclosed in the selected example, the bottom of the section II is provided with an annular flange l1 and is otherwise open.

The pump as shown further includes an internal element l8 having an internally screw threaded hub l9 adapted for threaded engagement with the bearing projection of a nut or clamping member 2|, in addition, includes a depending flange 22 extending partly around the periphery of the element l8 which is preferably of circular form as shown in Figs. 3 and 6; with this arrangement, the space between the ends of the flange 22 constitutes an inlet to the chamber defined by said flange 22, said inlet in co-operation with the slot N5 of the casing section II providing a valve for the purpose to be more fully set forth hereinafter. The element l8, in addition, is provided with a plurality of perforations 23 in concentric relation to the hub [9 as shown in Fig. 6; the perforations or apertures 23 extend in the direction of the axis of the element l8 and in the assembled pump establish communication between the aforesaid chamber beneath the element l8 as defined by the flanges 22 and the space within the pump casing above said element H3. The projection 20 constitutes a bearing for a shaft 24 to the upper end of which is secured an impeller 25, the arrangement being such that the impeller 25 rotates in a plane parallel with and above the element l8 as shown in Fig. 1. To provide against unintentional leakage, the shaft 24 may extend through a suitable stuffing box 26 and in any case is coupled by means of a connection sleeve 21 or its equivalent to the driving shaft 28 of a suitable electric or other motor 29; in the illustrated example of the invention, the motor 29 is suspended from and supported upon the nut 2| by means of supporting rods 30 as illustrated in Fig. 1.

The interior of the main section II! of the pump casing is provided with a partition member 3| extending transversely across the casing section It in a plane parallel with the plane in which the impeller 25 rotates, said partition member 3| being shaped and dimensioned to provide opposite side openings 32 in the manner illustrated in Figs. 1, 2 and 4. A second partition member 33 projects from the partition member 3| in perpendicular relation thereto and is dimensioned and shaped to fit the interior of the casing section ill and to extend into proximity and preferably up to the outlet M in substantial axial registry with the axis of the latter, as shown in Figs. 1 and l.

In the preferred construction the partition member 3| is located at the inlet end of the outlet chamber of the pump and substantially forming a bottom therefor, said member 3| being provided with the opposite side openings 32 which communicate with said outlet chamber. The second partition member 33, as illustrated in Fig. 1, divides the outlet chamber into two separate The internal element l8, q

compartments a each of which communicates with the outlet l4 and is in communication with one of the openings 32; furthermore the entry end of the outlet i4 is divided by said partition member 33, into two separate passages whereby the compartments a of the outlet chamber are independently connected with said outlet [4.

In the arrangement selected to exemplify the invention, the pump is located within a tank or other container 34 which may be of any conventional type, and is connected with the bottom of said tank 34 by means of the internal element [8 and the nut or clamping member 2|; that is to say, as shown in Fig. l, the bearing projection 20 projects through an opening in the bottom 34 of the tank into the interior of the auxiliary casing member II; the internal element It is screwed upon the projection 20 until the lower edge of the flange 22 is brought into engagement with the flange ll of the section II to thereby clamp the pump upon the inside of the tank 34 and the motor and its associated elements upon the outside thereof. The adjust ment of the internal element IS on the threaded projection 20 is such that the clamping pressure exerted on the flange I! will be suflicient to secure the pump and its motor securely in operative position; at the same time the aforesaid clamping pressure is insufiicient to prevent the rotation of the casing sections l0 and II relatively to the internal element l8 for adjusting the flow of the water or other liquid to the pump as will be more fully pointed out hereinafter. In practice, water or other liquid will be contained in the tank 34 in such an amount that the level of the water will be slightly above the partition member SI for instance at the point indicated by the section indicating line 2-2 in Fig. 1. It will be understood that the motor 29, if it is electrically operated, will be connected with a suitable source of electrical energy and controlled as to starting and stopping by means of a switch of any conventional type.

In practice assuming the motor 29 is operating, the shaft 24 will be rotated and accordingly will correspondinly rotate the impeller 25. As the impeller is thus operated, water will be forced through the opposite side openings 32 into the compartments a upon opposite sides of the partition member 33 and above the partition member 3|. As the action of the impeller 25 continues, the volume of the water or other liquid will be progressively built up in the two compartments at at the same time the partition member 33 acts to build up and develop pressure in the volume of water or other liquid so that the latter is forced outwardly through the apertures IS in the form of a spray or the like. In the illustrated example of the pump, the water or other liquid after it has been forced through the perforated head I5 may be returned to the tank or other container 34 for repeated use by the pump, or said tank or container 34 may be connected in any convenient manner with a source of water or other liquid supply whereby the water or other liquid in the tank or other container 34 is replenished.

The flow of water and consequently the height of the spray may be controlled by rotatably adjusting the pump casing sections In and II so as to adjust the position of the slot l6 relatively to the space between the opposite ends of the flange 22 of the element l8. As the rotative adjustment of the pump casing in the manner described continues, more or less of the slot I6 will project over the flange 22 and thereby reduce the size of the inlet through which the water or other liquid enters into the interior of the pump casing. In other words, the space between the opposite ends of the flange 22 is the equivalent of a slot so that the element l8 and the casing if}, H are provided wtih co-operating slots adjustable relatively to each other at will to control the flow of water or other liquid into the pump. It will be understood that the aforesaid rotative adjustment of the pump casing I 0, ll may be readily accomplished by simply exerting a force suilicient to overcome the clamping force of the internal element l8 upon the flange 11; when the desired adjustment has been effected, this clamping force will serve to maintain the casing I6, II in its set position.

The provision of the partition members 3| and 33 located and arranged interiorly of the pump casing as illustrated for instance in Fig. 1, makes it possible to build up volume and pressure Within the pump casing with the application of only a minimum. amount of pumping power. As a result, the pump itself may be of small dimensions and compact form and efficiently operated for its intended purpose by a motor of relatively small size. While the novel pump is ideal in association with miniature fountains, the pump is equally well adapted for fountains regardless of the size and for many other purposes in which a pump of relatively compact form and high power is required.

Various changes in the specific forms shown and described may be made within the scope of the claim without departing from the spirit of the invention.

I claim:

A pump comprising a circular casing having an outlet chamber and an upright outlet leading therefrom, and having an inlet slot in its peripheral wall, a bearing projection extending into said casing in axial registry with said outlet, a clamping member carried by said bearing projection exteriorly of said casing, a stationary apertured element carried by said projection within said casing and having an interrupted flange forming an opening adapted to register with said inlet slot, a driving shaft journalled in said bearing projection, an impeller carried by said shaft and rotatable thereby in a plane parallel with said element, a horizontal partition member in parallel proximity to said impeller at the inlet end of said outlet chamber provided with opposite site openings leading thereto, an upright partition member projecting from said horizontal partition member in approximate registry with the axis of said outlet whereby said outlet chamber is divided into two separate compartments, and a motor mounted on said clamping member and operatively connected with said driving shaft for operating the same and said impeller, said casing being rotatably adjustable at will relatively to said stationary element whereby said inlet slot is shifted relatively to the opening of said element to control the flow of liquid into the pump, and being clamped between said clamping member and stationary element so as to be held in adjusted position by friction.

OSCAR FRANCK.

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