US2030131A - Liquid and fluid actuating device - Google Patents

Description

Feb, 1936. Al W|CHA 2,030,13l

LIQUID AND FLUID ACTUATING DEVICE Filed May 27, 1.933 3 ShetS-Sheeb l INVENTOR ATTORNEY Feb, M, ma A WCHA 203mm LIQUID AND FLUIDACTATING DEVICE Filed May 27, 1933 3 Sheets-Sheet 2 Feb. A. WICHA LIQUID AND FLUID ACTUATING DEVICE Filed May 27, 1955 5 Sheets-Sheet 5 ATTORNEY Patented Feb. 11, 1936 UNED Si'iTES 'TENTv OFFICE Alois Wicha, Dresden, Germany, assignor to Erospha, Inc., Brooklyn, N. Y., a corporation of New York Application May 27, 1933, Serial No. 673,245 In Germany January 17, 1933 14 Claims.

The present invention relates to fluid and liquid actuating devices and it particularly relates to pumps, compressors and the like.

Although the present invention will be particularly described in connection with liquid pumps, it is also broadly adaptable to spherical machines in which a fluid is caused to actuate an impeller within said spherical machine to supply power to a shaft or to operate an indicating mechanism.

I have found that certain pumps provided With casings having interior chambers of partial spherical contour and including oscillating impellers may be employed in replacement of or in lieu of reciprocating rotary and other pumps with substantially increased efficiency and at W cost, with substantial elimination of many of the disadvantages inherent in such rotary and reciprocating pumps and with an enhancement of many of the advantageous features associated there- With.

In one preferred form of my invention the interior chamber of the casing may take the contour of a spherical section or segment with a peripheral spherical surface and at or conical side walls. An oscillating circular impeller is contained in said chamber, and the oscillating motion of this impeller is caused to take place both horizontally and vertically within said casing Y about a xed centre by a drive shaft which extends axially into the casing.

The drive shaft is provided with an eccentric driving bearing for the impeller causing this impeller to undergo said oscillating movement whereby fluid or liquid is continuously drawn in a through the inlet, moved through the casing, and

ejected into the outlet through suitable ports in and at one side of the peripheral spherical surface.

In pumps, compressors or other liquid actuating devices of this characters, it is necessary to provide means to separate the inlet and outlet ports and prevent transference of liquid or fluid therebetween except by the oscillating movement of the impeller and also tol provide means for preventing the rotation of the impeller, while permitting it to undergo the oscillating movement aforedescribed.

In separating the inlet from the outlet it has been found satisfactory to provide a partitioning wall extending across one side of the interior pump chamber between the side walls of said chamber, which wall may desirably be fixed with respect to the casing and extend through a slot in the oscillating impeller.

On the other hand, in guiding the motion of the (Cl. 10B-43B) impeller and permitting the oscillation, it has been found desirable to utilize a' pivotal element which bears both in the casing and in the impeller, and which will permit relative rotational movement and sliding of the impeller in respect to the casing, and it is a particular object of the present invention to improve this guide member so that it will cooperate most efficiently with the impeller and function in a most desirable manner.

A further object of this invention is to provide l a guide member and to so construct the impeller to cooperate with said guide member, that the amount of strain and friction will be reduced to a minimum, so that no cooking or biasing effect will ensue, tending to place excessive strains either upon the impeller disc or the guide and to prevent ready relative sliding movement of said impeller and guide member.

Another further object of the present invention is to provide a guide member and to form an impeller member to cooperate therewith so that the oscillating movement of the impeller disc, or pump actuator, will take place in such ,a manner as to result in the highest degree of efliciency and substantially eliminate acceleration and deceleration of the impeller masses during the operation of the pump.

In accomplishing these last-mentioned objects it has been found most satisfactory to provide a guide member which may partake of a relative sliding movement, both with respect to the casing and the impeller. This guide element in one embodiment may take the form of a key element which is guided and engaged in slots in the Wall of the casing and in the impeller structure. Preferably these slotsare substantially transverse to each other so as to permit the impeller to undergo the desirable oscillating movement in both directions.

The above and other objects will appear more clearly from the following detailed description, when taken in connection with the accompanying drawings which illustrate a preferred embodiment of the inventive idea.

In the drawings:

Fig. 1 is a top sectional View of the casing with the impeller in offset position therein.

Fig. 2 is a transverse front sectional View upon the line 2 2 of Fig. 3.

Fig. 3 is a top longitudinal sectional view upon the lines 3--3 of Fig. 2.

Fig. 4 is a top View of the impeller removed from the casing partly in section showing the Slot in the peripheral edge thereof.

Fig. 5 is a side view of the impeller removed from the casing.

Fig. 6 is a side view of the actuating drive shaft.

Fig. 7 is a top diagrammatic sectional view along the line 1 1 of Fig. 2, diagrammatically illustrating the relationship of the partitioning wall between the inlet and outlet ports and the impeller.

Fig. 8 is a perspective view of the guide of Figs. 1 to 3 removed from its slots in the casing and in the impeller.

Figs. 9, 10, and 11 illustrate another embodiment having a slightly modified form of guide, Fig. 9 being a sectional view upon the line 9 9 of Fig. 10, Fig. l0 being .a sectional view upon the line lll- IB of Fig. 9, and Fig. 1l being a diagrammatic front view along the line H-II of Fig. 9.

Fig. 12 is a side view of still another embodiment having a guide similar to that shown in Figs. 9 to 1l.

Figs. 13 to 21 are top and front views of the impeller illustrating diagrammatically the device of the present invention, particularly the device as shown in Figs. 1 to 8.

In Figs. 1 to 3 the casing A is provided with an interior chamber B of spherical contour, which chamber receives the impeller C. The side of the casing is provided with a tubular projection or boss D which receives the shait E. The shaft E is centrally provided within the casing with a ball element F which has an oblique slot J receiving the impeller C.

The guide I-I, to which this invention is particularly directed, has bearings both in the casing A and in the impeller and regulates the oscillating movement of said impeller. The partitioning wall I separates the inlet and outlet ports and prevents fluid or liquid from being transferred directly therebetween except by the oscillating movement of the impeller C.

The interior chamber B of the casing A (see Figs. 1, 2, and 3) takes the contour of a portion of a spherical section having a peripheral wall and inwardly converging frustro-conical side walls 2 i, which converge toward the center point 22 of the pump.

The side walls 2| are centrally provided with the spherical depressions 23 and 43 (see Figs. l and 3) which serve as bearings to receive and properly position the ball element F and the impeller C within the casing.

One side of the casing A is provided with the extensions 2d and 25 (see Fig. 2) which have central openings 2S and 21, which may ser' e as inlet and outlet ports. These inlet and outlet ports 265 and 21 intersect the peripheral spherical surface 28 to form inlet and outlet elongated openings therein.

'Ihe inlet and outlet ports 25 and 21 are separated by means of the partitioning wall I which takes the contour of an annular section and ts at its ends in slots 29, in the conical side walls 2| of the casing A (see also 7).

As a result direct communication between the inlet and outlet ports and 21 will be prevented and all fluid or liquid will necessarily be transmitted through the casing A in the direction indicated by the arrow 30, see Fig. 2.

As shown in Figs. 1, 2, 3, and 6, the oblique slot J in the central ball element F is provided with an oblique" cylindrical central shaft ele ment 3l and with inwardly converging frustreconical side surfaces 32 and 33 which converge toward the center point 22 of the pump, which also is the center point of the ball element B.

The impeller C is shown in the casing in Figs. 1, 2, and 3 and removed therefrom in Figs. 4 and 5.

The impeller has two outwardly diverging truncated or frustro-conical propelling surfa es 3d, which inwardly converge towards said center point 22 and which are joined together at their outer extremities by the peripheral spherical surface 20', which closely conform with the interior peripheral surface 2i) of the interior of the casing B.

As shown best in Figs. 1, 3, 4, and 5, the propelling side surfaces 34 of the impeller at 32 and 33 contact with and bear against the corresponding surfaces 32 and 33 of the slot J, while the central cylindrical surface 3| contacts and bears upon the corresponding cylindrical surface 3| of said slot.

The portion of the impeller C adjacent the inlet and outlet ports 26 and '21 is provided with a transverse slot 31 to receive the partitioning wall I. The bottom of the slot 31 is provided with a spherical bearing surface 38, which contacts the correspondingly shaped surface 38 of the partiticning wall I. The upper side 39 of the partioning wall I closely contacts with the spherical periphery 2B of the interior chamber B of the cas ing A.

The sides 40 of the partitioning wall 28 are closely adjacent to the sides 40 of the slot in the impeller, the side walls of said slot in the impeller diverging outwardly as indicated so that it is possible for said impeller C to have a substantially rotary movement in respect to said partitioning wall I without jamming (see Fig. 7)

The impeller C is provided with a guide member I-I which controls the oscillating movement thereof, preventing rotation with the rotation of the shaft E. The guide H, which is shown in combination with the impeller and casing in Figs. 1, 2, and 3, and removed therefrom in perspective in Fig. 8, has a casing n 35 received in the slot 35 in the wall of the casing and an impeller fm 36 received in the slot 36 in the impeller. The ns 35 and 36 are positioned transversely to each other and they are integrally joined at 42.

The guide H, as shown in Figs. 1 to 3 and 8, preferably takes the form of a key element which will permit relative sliding and rotating movement of the impeller in respect to the horizontal axis through the casing. As a result the oscillating movement of the impeller C will cause all points on the surface of the impeller 2U to undergo lemniscate movements of varying amplitude. The amplitude of these lemniscate curves is maximum adjacent the horizontal axis of the casing C, and decreases until such movement substantially resembles that of a straight line adjacent the upper and lower parts of the casing and par'w ticularly at the inlet and outlet ports and the partitioning wall I.

The slot 36 is received in an annular spherical extension 5! of the impeller which conforms with the spherical socket 43 of the casing A. The extension 53 is interposed between the socket 43 and the ball half 5l of the slotted ball F. The ball half 5l is of smaller size and has a smaller radial periphery than the other ball half 52. (See Figs. 1, 3, and 6.)

While the outer surface d3- of the extension 5l] (see Figs. 4 and 5) conforms with the spherical socket 43, the inner spherical surface of the extension 50 has a bearing contact with respect to the spherical surface of the ball half 5|.

The construction of the impeller and casing may be varied, and it is often found convenient to split the impeller C and the shaft E into two halves, not shown, which may be subsequently bolted together. The casing A, as indicated, is made in halves which are joined together` by the flange connection 66, see Figs. 1 and 3, and is provided with the feet or support |6I, for enabling attachment of the pump to a suitable foundation.

In Figs. 1, 2, 4, 5, and 7 the impeller C is shown as centrally located in the casing A, for purposes of clearer illustration. It is to be understood, however, that at all times during operation, the impeller C will assume an oblique position, as indicated in Fig. 3, and as diagrammatically illustrated in Figs. 14 to 21.

The guide H which is shown located diametrically opposite the shaft E, may be positioned at other places to guide the motion of the impeller. It will be noted that the outer and inner edges of the ns 35 and 36, which are respectively designated in Fig. 8 as |35 and |36, and 235 and 236, are of spherical contour so as to conform to the corresponding contours of the casing and of the impeller. Spherical contour |36 of the fin 35 will conform to the spherical surface 5|, while the spherical contour 236 at the inside portion of the fin 36 will conform to the walls of the spherical socket 43. Similarly the spherical contour |35 of the iin 35 will conform to the bottom of the slot 35', while the spherical contour 235 will conform to the outside of the extension 56 of the impeller C. The movement of the guide H is more fully shown in Figs, 14 to 2l.

The bearing between the shaft E and the tubular projection D may be suitably arranged so as to assure a liquid or fluid-tight connection and, preferably, packing means are provided which are held under compression. 'I'he bearing between the shaft E and the tubular projection D and between the slot J and the central portion of the impeller C may be suitably lubricated by grooves passing across the contacting faces through which fluid or liquid will be forced during operation of the impeller C, due to' differences in pressure cn the opposite sides of the impeller.

The operation of the pump is most conveniently shown from the diagrammatic views Figs. 13 to 21. Fig. 13 illustrates diagrammatically the turning of the impeller disc and Figs. 14 to 2l show top and front views of the impeller in each one of the positions designated on Fig. 13, namely I, II, III, and IV.

Figs. 14 and 15 are, respectively, top and front views of the impeller in position I; Figs. 16 and 1'7 are corresponding views in position II; Figs. 18 and 19 are corresponding views in position III; and Figs. 20 and 21 are corresponding views in position IV.

From a consideration of Figs. 14 to 21 it appears that when the shaft E rotates, the impeller C will be caused to sweep backwardly and forwardly both horizontally and vertically across the interior chamber B.

At the same time the axes about which the impeller C tends to swing will also tend to rotate about the fixed common center point 22 of the casing A, chamber B and the impeller C'. The horizontal axis will describe a lemniscate curve converging toward the center point and the vertical axis will tend to swing in a. vertical plane.

As a result of this movement, as previously stated, all points on the periphery of the impeller C removed from the vertical axis will tend to move along lemniscate curves which become of greater latitude as the point approaches the horizontal axis of the impeller. These curves will lay .in a spherical surface described upon a radius equal to the distance of the point from the center y point 22. Because of this movement, substantial acceleration or deceleration forces will not be incurred upon movement of the mass of the impeller C and the abrupt changes in acceleration characteristic of the reciprocating pump are altogether eliminated.

As indicated in Figs. 14 and 15 respectively, in top and front views, the impeller C will divide the interior B of the casing A into two compartments 6U and 6| which are symmetrically disposed in respect to the center point 22.

In Figs. 14 and 15 the compartment 60 occupies the upper half of the casing A, while the chamber 6| occupies the lower half of the casing A. In Figs. 16 and 1'7 the compartment 66 occupies the right side of the casing while the compartment 6| occupies the left side of the casing. In Figs. 18 and 19 the compartment 6| occupies the top side of the chamber B while the compartment 60 occupies the bottom side of the chamber B and in Figs. 20 and 31 the compartment 60 occupies the left side of the chamber B while the compartment 6| occupies the right side of the chamber B.

It is apparent that these compartments 66 and 6|, due to the oscillation movement of the impeller C, are caused to rotate continuously within the interior chamber B of the casing A.

These compartments 60 and 6| are successively opened and closed to the inlet 26 and to the outlet 2 so that uid or liquid which is received through the inlet 26 Will be carried to the outlet 21. These compartments 60 and 6| will transfer liquid or fluid through the lower half of the chamber B from the inlet 26 to the outlet 21 and will be prevented from transferring fluid or liquid reversely from the outlet to the inlet in the upper half ofthe chamber B by the wall I.

It will be noted in Figs. 14, 16, 18 and 20 that the compartments 6|) and 6| must move through and will be divided by the wall I. As shown in Fig. 14 the compartment 66 is moving to the right and is bisected by the wall I, while in Fig. 16 both compartments are divided by the wall I. In Fig. 18 only the compartment 6| is divided by the wall I and as the compartment 6| moves to the right, the greater part of its volume also moves to the right of the wall I, decreasing the amount of said volume on the left of the Wall I.

As the compartments 66 and 6| move through the wall I they rst are opened to the outlet 21. Then the volume of the chamber upon the outlet side of the wall 21 decreases with the result that the liquid or fluid therein is discharged through the outlet. urne of the chamber on the inlet side of the wall I increases with the result that liquid is sucked in through the inlet 26 to ll the increasing volume on that side.

It will thus be apparent that each compartment 60 and 6| as it passes through the Wall 21 has inlet and outlet portions of changing volume, the volume successively increasing in communication with the inlet and decreasing in communication with the outlet.

The compartment 66 and 6| will be cut off from the outlet 21 and the inlet 26 after they have completed their passage across the wall I At the same time the voland the convergences 62 and 63 between the side surfaces 311 of the impeller C and the conical walls 2| have passed the port openings. These areas or lines @2 and 63 are indicated in Figs. 15, 17, 19 and 2l by the dotted lines 62 and 63. The areas or lines for the opposite compartments are always symmetrically disposed diametrically opposite each other in respect to the center point 22.

As soon as the passing ends of the compartments 66 and 6! have passed the outlet port 21, the approaching ends of the same compartments will be opened to the outlet port and will decrease in volume while in communication with the outlet until all of the liquid or i'iuid has been then forced out therethrough. At this point the lines o1' areas 62 and 63 will pass across the connection of the end of the wall member I with the side walls 2l of the chamber B.

In the position shown in Figs. 14 and 15 the Contact 63 coincides with the connection of the ends of the wall I with the wall 2! of the interior B so that the compartment 6I in this position is not divided nor is it decreased in volume by the volume of the wall. To reach this position the compartment 6l has been increased in volume while in communication with the inlet 2t on the inlet side of the Wall I, with the result that an amount of fluid or liquid equal in amount to the maximum volume of the compartment 6l has been sucked or drawn thereinto.

In Figs. 14 and 15 the compartment 6i is just about to be opened to the outlet 21 by the outlet edge 26o of the impeller C, which is moving away from wall 2| after passage of the line or area The inlet edge 261' is cutting off the inlet port 26 while still moving toward the wall and it will reverse its movement as the line or area 63 passes. This reversal of movement of the edge 26 of the impeller C will occur with the movement of the line or area 63 across the wall.

As the shaft E continues to rotate and impeller C to move from the position of Figs. 14 to 15, to the position of Figs. 16 to 1'1, namely, from position I to position II, as shown on Fig. 13, the edge 23 of the impeller C will tend to swing away from the wall 2| of the compartment 6! increasing the opening of the inlet port 26 to the position indicated in Fig. 16. At the same time the edge 25o will sweep across the outlet port 21 until the maximum outlet port opening is attained while the area 62 sweeps across said outlet port 21 between positions II and III.

As this is occurring, the compartment 6I is being moved through the guide so that it is increasing in volume in respect to the inlet 26 and liquid or fluid is being sucked into the opening portion on the inlet side up to the line or area 63, while due to the decreasing volume of the compartment 6l on the outlet side of the wall I the corresponding amount of liquid and iluid is being forced outwardly through said outlet 21.

In the position of Fig. 18, the compartment 6l is being substantially bisected by the wall I and it is open one-half to the inlet 26 and one-half to the outlet 21 with the volume in communication with the inlet increasing while the Volume with the outlet is decreasing. From this position the outlet edge 29o will tend to swing reversely toward the vwall 2i of the compartment 63 to cut off the outlet port 21 and it will be shortly followed in such reverse movement, by the edge 2 Iz'.

In Figs. 20 and 21 the contact area 63 has reached the position IV indicated in Fig. 13.

` In this position, the lling of the compartment 6l from the inlet 26 is being completed and the last portions of liquid contained in said compartment 6| on the outlet side of the wall I are being forced out through said outlet 21.

As the compartment 6| then continues its rotational movement, the lower edge 26' of the impeller C will swing outwardly from the wall 2i of the compartment 6i permitting the incoming liquid to ilow to the bottom of the interior of the chamber B.

The operation of the other pumping compartment 66 is the same as has just been described, except that all operations take place 160 later or earlier than in the case of compartment 6l.

It is, therefore, evident that as the shaft E rotates and the impeller C and the guide H oscillate, liquid or fluid will be continuously acted upon and moved from the inlet 26 to the outlet 21 by the compartments 60 and 6l.

It will be noted that the guide H by means of its transverse iins and 36 tting in the casing 5 slot 35 and the impeller slot 36', respectively, will permit both lateral and vertical oscillation of the impeller C. In Figs. 14 and 15 the guide H will be in the middle of the slot 35 and the top of the slot 36. H will be at the extreme left of the slot 35 and in the middle of the slot 36. In Figs. 18 and 19 the guide H will bein the middle of the slot 35' and the bottom of the slot 36'. In Figs. 20 and 2l the guide will be at the right end of the slot 35 and in the middle of the slot 36. The guide I-I will slide readily through the slots 35 and 36 and will be lubricated in its motion by the liquid being forced through the pump casing from the inlet 26 to the outlet 21. guide while permitting the oscillating movement of the impeller C will prevent rotary vmovement and will control the oscillating movement of the impeller C. All of this stress restraining the impeller C from rotating with the shaft E will be taken by pressure between the sides of the ns 35 and 36 and sides of the slots 35 and 36 with all of the stress being ultimately transferred to the casing.

It will be noted that the pump will substantially meter the flow. Except for a small amount of leakage across the periphery 20 and across the lines or areas 62 and 63, the combined volume of the chambers 60 and 6I will be transferred from the inlet to the outlet upon each complete v revolution of the shaft E.

The volume of these pump compartments may be conveniently calculated by subtracting the volume of the impeller C and the wall I from the volume of the chamber B. The volume of these compartments control the capacity of the pump and its delivery per revolution and such volume is determined by the diameter of the chamber B and the width of such chamber. The angle of the eccentric bearing slot J of the shaft E will vary with the width of the chamber B, so that the impeller will cover such chamber in its oscillating movement.

The area of the inlet port 26 and the outlet port 21 should be always such that the compartments 6i! and 6I may substantially immediately fill with liquid or iluid as they are increased in volume in communication With the inlet 26 and/or be emptied of iluid or liquid as they are decreased in volume in communication with the outlet 21. Otherwise, there would be a tendency for the impeller C, in the case of uncompressible liquids, to create a vacuum on the inlet side and to compress liquid on the outlet side, which would reduce the efficiency of the pump.

In Figs. 16 and 17 the guide At the same time this 'Ihe velocity of the movement of the body of the impeller C is substantially uniform at all times, there being no minimum or maximum velocity, merely a change in direction.

The axis of the eccentric slot shaft element 3 I, the axis of the impeller C and the vertical and horizontal axes of the interior B of the casing A, all intersect throughout movement at the common center point 22. The impeller is preferably so designed that its center of gravity coincides with this central point 22.

In considering the operation of the iluid actuating Adevice of the present invention, which operation has been diagrammatically illustrated and described in connection with Figs. 13 to 2l, it is to be noted that the impeller C in the course of its rolling oscillating movement causes a displacement of fluid both when it moves toward the wall of the casing 2| and when it moves away form the wall of the casing 2|. In the former case the fluid is forced out of the casing through the outlet or is forced from one part of the interior chamber B of the casing A to another part of the interior chamber B of the casing A, as indicated by the arrows 30.

Since the entire side wall or side propelling surface 34 of the impeller C does not move toward the side wall 2| of the interior chamber simultaneously but rather is caused to roll upon said surface so that one portion of the propelling face 34 of the impeller is advancing toward the side 2| of the casing, while another portion of the propelling face 34 of the impeller may be moving away from the same side wall of the impeller, it is evident that the rolling oscillating movement of the impeller C will result in moving fluid circularly around within the interior of the casing.

It is thus evident that the displacement action of the rolling oscillating impeller C of the present invention differs substantially from the displacement action of the piston of a reciprocating pump in that whereas the motion of the reciprocating piston causes a linear movement of fluid to the end of a cylinder, in the device of the present application on the other hand, the displacement action of the impeller causes a rotational movement of the fluid from the inlet to the outlet along the propelling face 34 of the impeller. The wall I extending between the side walls of the chamber causes the oscillating action to draw in fluid from the inlet and to force fluid out through the outlet.

The volume for containing iluid or liquid within the casing of the device will always be substantially constant since it will be equivalent to the volume of the interior chamber B minus the volume of the impeller C and the volume of the wall I. As previously described, the impeller C will divide the chamber B into the two symmetrically positioned pumping compartments 60 and 6| which, although they are of substantially conetant volume throughout operation of the device (except for the volume of the wall I which may project into them) they nevertheless will have portions of varying volumetric capacity, the portion in communication with the inlet increasing While the volume in communication with the outlet is decreasing.

From this point of view it may be considered that the wall I is a fixed fluid impelling device which moves relatively through the compartments on opposite sides of the impeller C to increase the volume of the compartments 60 and 6| on one side, causing` drawing in of liquid from the inlet 26 and to decrease their volume on the other side, causing discharge of liquid through the outlet 21. This action, however, is quite different from the action of a reciprocating piston pump inwhich there is a fixed piston and a movable cylinder, in that in the present invention the displacement member or Wall I moves continuously through the compartments, one after the other without the abrupt reversals as occur in all reciprocating pumps.

It is apparent from the foregoing description of the operation, that the shaft may be rotated in either direction, and that as a result of such reverse rotation the inlet 26 and outlet 21 will be similarly reversed. The discharge output of the device is proportional to the speed of rotation of the shaft, While the head or height of delivery is independent of the speed of rotation.

In Figs. 9, 10, and 11 another embodiment is shown in which a slightly modified type of guide means is employed. Similar functioning parts are designated by the same letters and numerals in this embodiment as in the embodiment of Figs. 1 to 8 except that such letters are provided with a superior 2.

In Figs. 9 to 11 the guide takes the form of a square pin H2 which projects equally into the slot 352 in the impeller extension 502 and in the slot 352 in the casing A2. The side wallsv of the pin H2 are flattened to .slide along the side Walls of the transverse slots 352 and 352. The inside surface of the pin H2 is of spherical contour so as to conform to the outer spherical surface of the ball half 5|2, and the outer surface |352 of said pin is also of spherical contour to conform to the bottom of the slot 362.

The guide pin H2 will function in the same manner as the guide I-I shown in Fig. 8. It is obvious, of course, that the pin H2 may be made of many variant shapes and may take rounded or elliptical shapes and the portions fitting in the 4slots 352 and 362 may be of different shapes.

In Fig. l2 is shown another embodiment in which the impeller is carried by ball bearings. Parts which function similarly to the part previously described in connection with Figs. l to 11 are designated with the same numerals or `letters provided with a superior 3.

In Fig. 12 the ball bearing structure M carries'` the impeller C3 upon the oblique cam shaft element 3|3. The ball bearing is provided with the races and |0| between which are located the balls |02.

The half section 523 of the ball is provided with the shoulder |04 for receiving the central section |05 of the impeller and is also provided with the shoulders |06 for receiving the ball bearing structure M. The nut |01 which is screwed onto the threaded portion |08 holds the ball bearing structure l in the oblique position on the shaft 3|3.

It will be noted that the slot 363 projects into the pumping compartments formed Within the chamber B3 by the impeller C3. Although the slot Will receive uid which is being pumped through the casing, such recess will'be advantageous. as it Will permit such liquid or uid to pass into the cavity I0 inside of the impeller and lubricate the ball bearing structure M and the sliding bearings at the shoulders |04 and |06.

This slot will not permit of leakage or short circuit across the wall I3 separating the inlet and the outlet ports.

To assure a most efficient operation, the ball bearing M is provided with as great a diameter as possible.

As shown in the above embodiments, both the impeller and the walls of the casing are provided with walls which converge toward the center point 22 of the casing, but if desired, their propelling surfaces 2| and 34, respectively, of the casing and of the impeller might be caused to be vertical and/or to diverge as they approach the central horizontal axis of, the pump or liquid actuator.

The present application is similar in subject matter to my copending applications Serial Nos. 656,637; 656,638; 656,639; 656,640, and 656,641 filed respectively February 13, 1933.

The impeller guide separating wall and central bearing constructions disclosed in the present application may be employed in connection with other constructions such as shown in said copending applications. For example, the separately positioned wall and guide members of the present application may be employed with the converging impeller shown and described in my applications 656,637 and 656,638 and with the diverging impeller shown in my copending application 656,641.

If desired, the fixed separating wall of the present application may be pivotally mounted, as shown in applications 656,637 and 656,639, and it may be combined with conical guide members as shown in applications 656,637 and 656,641.

In my copending application 673,244 a ball is utilized instead of the double fin guide of Fig. 8 or the pin guide of Fig. 11, and this ball is positioned away from the separating wall I as shown in the present application.

In my copending application 696,944 is shown the utilization of space or surface packing or sealing between the periphery and sides of the impeller and periphery and sides of the side walls of the interior chamber, which in the embodiment shown in the copending application rotate with the central shaft.

'Ihe construction of the present application may also be utilized for gas compressors, as shown and described in my copending application 656,638 or for vacuum pumps, as shown and described in my copending application 656,642.

What is claimed is:

1. In a fluid pumping device, a casing having interior side walls and a continuous spherical end wall connecting said side walls, an impeller, the periphery of which closely conforms with the spherical end wall and oscillates vertically and horizontally with an oscillating movement between said side walls and about the center point of said casing, a shaft passing into said casing having an eccentric cam member actuating said impeller, a guide key fitting into, and sliding within, slots in said impeller and casing, preventing rotation of said impeller while permitting the oscillating movement thereof, the axes of said shaft, said casing and said cam member intersecting at said center point, the intersection of said slots crossing the axis of said shaft during said oscillating movement.

2. In a fluid actuating device, a casing having adjacent inlet and outlet ports, a fixed wall therebetween, an oscillating impeller positioned in said casing, a driving shaft provided with an eccentric driving means for said impeller and a sliding guide for preventing rotation of the impeller, said shaft upon rotation causing a lateral and longitudinal oscillation of said impeller, said casing being provided with a slot to receive said sliding guide, the plane passing longitudinally and in the direction of the length of said slot and` centrally through said slot, intersecting the axis of said shaft, and theV plane passing centrally andlongltudinally through the center of said wall, passing through said shaft axis and said center plane of said slot, the center plane of said fixed wall and the center plane of said slot being at right angles to each other, said center planes passing through said center wall and said xed slot without crossing the longest side walls of said wall and said slot.

3. In a spherical fluid actuating device, a casing provided with a peripheral spherical enclosure with adjacent inlet and outlet ports, a nxed separating wall, an oscillating disc-like impeller closely fitting the walls of said casing and dividing the interior of said casing into a plurality of separated compartments, a drive shaft having an oblique bearing in respect to said impeller and a sliding guide preventing rotation but permitting oscillation of said impeller, the oscillation of said impeller causing a substantially continuous alternate successive opening and closing of said compartments to said inlet port and then to said outlet port, whereby fluid will be continuously drawn in through said inlet and ejected through said outlet, said impeller and said casing carrying slots, which are positioned so that they will always intersect and open into one another at such places of intersection, said guide projecting into and sliding in both of said slots.

4. In combination, a casing having an interior taking the form of a spherical section, and provided with an inlet port and an outlet port, a relatively xed partitioning wall therebetween, an oscillating impeller therein, a shaft havingy an eccentric bearing for said impeller within said casing, and a sliding guide connected to said impeller to prevent said impeller' from turning, said impeller forming a plurality of symmetrical separated compartments in said casing and upon actuation by said shaft serving successively -to open and close said compartments to said inlet and then to the outlet whereby iiuid will be moved through said casing from said inlet to said outlet, said impeller and said casing carrying arcuate slots of spherical contour, said slots receiving said sliding guide and the intersection or" said slots crossing tlije axis of said shaft during such oscillation.

5. In a spherical fluid pumping device, a casing having inlet and outlet ports, a relatively fixed partitioning wall therebetween, interior transverse conical side walls and a continuous spherical end wall connecting said side walls, a disc-like spherical impeller provided with an extension provided with a slot, the periphery of which impeller closely conforms to the spherical end wall and which impeller oscillates laterally and longitudinally with an oscillating movement between said side walls and about the center point of said casing, a shaft passing into said casing having an oblique cam member` actuating said impeller and a sliding oscillating guide connected to the casing and sliding in the slot in said impeller extension and preventing rotation of said impeller, said cam member being oblique in respect to said shaft and consisting of a. central ball having an oblique slot therein, and the interior transverse conical side wall adjacent said extension being provided with a spherical recess, said spherical extension being positioned between and contacting on opposite sides with and bearing against said spherical recess and said ball.

6. In a fluid actuating device, a casing having inlet and outlet ports, a transverse fixed separating wall between said ports, an oscillating impelrfi) ler disc having a peripheral spherical surfa'ce, an

oblique driving shaft therefor and a guide pin for preventing rotation of the impeller, said impeller and said casing being provided with slots to receive, and form sliding guides for the ends of said pin, and said shaft upon rotation causing a lateral and longitudinal oscillation lof said impeller the slot in said casing being so positioned that the axis of the shaft will always intersect the center line of said slot.

'7. In a fluid actuating device, a casing provided wth spaced inlet and outlet ports, a transverse fixed separatingr wall between said ports, an oscillating impeller conforming to the walls of said casing and dividing the interior of said casing into a plurality of separated compartments, a drive shaft having an eccentric bearing in respect to said impeller and a sliding key guide preventing rotation but permitting oscillation of said impeller about a fixed center point, said casing and said impeller being provided with bearing connections for said guide, said bearing connections permitting only straight line reciprocatory movement of said guide, the oscillation of said impeller causing a substantially continuous successive opening, increase of volume, and closing of said compartments in respect to said inlet port and then a successive opening, decrease in volume and closing of said compartments in respect to said outlet port, whereby fluid will be continuously drawn in through said inlet and ejected through said outlet, said drive shaft being provided with a spherical ball element within said casing carrying said eccentric, and the side walls of said casing being provided with spherical sockets to receive said ball, and said impeller being provided with an annular spherical extension tting between one side of said ball and one of said sockets, said extension carrying one of said bearing connections.

8. In combination, a casing having an interior taking the form of a spherical sect-ion with side walls, and provided with an inlet port and an outlet port, a transverse fixed separating wall between said port, an oscillating impeller therein, a shaft having a ball with an eccentric bearing slot for said impeller, said ball being positioned in said casing, and a sliding key guide connected to said impeller to prevent said impeller from turning, said impeller forming a plurality of symmetrical separated chambers in said casing and upon actuation by said shaft serving successively to open and close said chambers to said inlet and then to the outlet whereby fluid will be moved through said casing from said inlet to said outlet, the sides of said disc converging towards the side walls of said interior on opposite sides of the center point, said impeller being provided with a spherical extension fitting over said ball and contacting with one of the side walls of said casing and said extension and said contacting side wall, each being provided with a transverse slot to receive said sliding key.

9. In a spherical fluid actuating apparatus, a casing with a peripheral spherical enclosure, the sides of which are provided with enclosing side walls, said casing being also provided with inlet and outlet ports, a transverse fixed separating wall between said ports, a disc-like impeller therein, means to impart a lateral and longitudinal oscillating movement to said impeller about a fixed center point, and a sliding key guide engaging said impeller and said casing to prevent rotation thereof while it is being oscillated by said means, said guide taking the form of a double plate member, the plates of which are rigidly connected together and set transversely to each other, one plate oscillating in a slot in the impeller and the other plate oscillating in a slot in the casing.

l0. In a iiuid actuating apparatus, a casing with inlet and outlet ports, a transverse fixed separan ing wall between said ports, an impeller therein having propelling surfaces taking the form of a double truncated cone, a rotary shaft having a central ball element with an oblique bearing slot in which said impeller is slidably mounted, means to drive said shaft to cause said disc to undergo an oscillating movement about a fixed center point, and a guide engaging said disc to hold the same against rotation while said shaft is being driven, said guide consisting of two iins unitarily connected and transverse to each other, the casing being provided with a slot to receive one 0f said fins and the impeller being provided with a slot to receive the other of said ns.

1l. In a spherical uid actuating apparatus, a spherical casing with adjacent inlet and outlet ports, a transverse xed separating wall between said ports, a disc-like impeller therein provided with a transverse slot to receive said wall, an oblique shaft on which said impeller is mounted, means to drive said shaft to cause said impeller to undergo a lateral and longitudinal oscillating movement about a xed center point, and a guide for said impeller, said guide preventing rotation of said impeller but permitting relative sliding and pivotal movement of said disc, said guide consisting of a square pin and said impeller and casing being provided with transverse slots to receive the ends of said pin, said slots being arranged so as to cause said pin to reciprocate across the axis of said shaft.

l2. In a fluid actuating apparatus, a spherical casing, an impeller therein, a shaft-on which said impeller is mounted, means to -drive said shaft to cause said impeller to undergo an oscillating movement about a fixed center point, said shaft having an eccentric bearing portion for said impeller, and a guide for said impeller, said guide having a slotted connection in said casing, said guide preventing rotation of said impeller but permitting relative sliding and pivotal movement of said disc, said impeller being provided with a slotted spherical extension to receive said guide, said spherical casing being provided with inlet and outlet ports and a separate wall extending between said ports, said impeller being provided with a slot to receive said separating wall, and the center plane of said slot of said spherical extension intersecting and being oblique to the axis of said shaft and the center planes of said eX- tension slot and said separating wall being oblique to each other, the said center planes of said slot of said spherical extension and of said separating wall passing through said respective slot and separating wall parallelly to the longest sides thereof.

13. In a fluid actuating apparatus, a spherical casing, an impeller having a plurality of slots therein, a shaft with a central ball element provided with an eccentric bearing slot carrying said impeller, means to drive said shaft to cause said impeller to undergo an oscillating movement about a fixed center point, a relatively sliding guide in one of said impeller slots and having a sliding connection in respect to said casing, said guide preventing rotation of said disc but permitting relative sliding and pivotal movement of said disc, and ay partitioning Wall located in another of said impeller slots, said guide oscillating across the aXis of said shaft, said casing being provided with an inlet port and an outlet port, separated by said partitioning Wall, the axis of said guide oscillating in a plane transverse to the plane of said partitioning Wall, said plane of said partitioning wall passing centrally through said partitioning Wall and parallelly to the longest side surface of said partitioning Wall.

14. In a pump, a casing provided with a spherical interior chamber with conical side Walls and With inlet and outlet ports positioned closely adjacent to each other in the spherical periphery of said chamber, a partitioning wall extending transversely between the side Walls tting in slots in said side Walls and separating said inlet and outlet ports, an impeller having a peripheral slot With laterally diverging Walls fitting in said casing and closely contacting with the peripheral spherical surface, said partitioning wall being received in said impeller slot, a shaft with a cam element carrying said impeller, means to drive said shaft to cause said impeller to undergo an oscillating movement about a xed center point, and a guide taking the form of untarily connected transversely positioned spherical segments, said guide preventing rotation ofV said impeller but permitting relative sliding and pivotal movement of said impeller, said impeller being provided with a slotted extension to receive said guide, said slot in said extension receiving one of said segments and said casing being provided With a slot to receive the other of said segments, said guide sliding in both of said slots.

ALOIS WICHA.

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