US1764263A

US1764263A - Bottom attachment for nonreversing attachment for motor-driven pump heads

Info

Publication number: US1764263A
Application number: US80685A
Authority: US
Inventors: Carl E Johnson
Original assignee: US ELECTRICAL Manufacturing Co
Current assignee: UNITED STATES ELECTRICAL MANUFACTURING Co; US ELECTRICAL Manufacturing Co
Priority date: 1926-01-11
Filing date: 1926-01-11
Publication date: 1930-06-17
Anticipated expiration: 1947-06-17

Description

June 17, 1930. c. E. JQHNSON BOTTOM ATTACHMENT AND NONREVERSIN G ATTACHMEN FOR MOTOR DRIVEN PUMP HEADS Filed Jan. 11 1926 4 Sheets-Sheet 8 W 0 4 Y Z Y 14 5 6 W 6 W M E W 4 7 6/ a W) 0 m /W 0 T F J 1 m 4 M w A T ,4. w a m w 2 a n 2 Y 1 M J J 6 2 5 I N Z M g m F m 5 z 5 Z a Z 4 .6 7 J J 5 6 w, II I If! wt 2 6 Q 2 m h 5 M M 6 7 5. J 5 6 5 w a i/l a a w June 17, 1930. c. E. JOHNSON 1,764,263

BOTTOM ATTACHMENT AND REVERSING ATTACHMENT FOR MOTOR DRIV PUMP HEADS Filed Jan. 11 1926 4 Sheets-Sheet 2 June 17, .1930. c E. JOHNSON 1 764,263

9 BOTTOM ATTACHMENT AND NONREVERSING ATTACHMENT FOR MOTOR DRIVEN PUMP HEADS June 17, 1930. c. E. JOHNSON 1,764,263

BOTTOM ATTACHMENT AND NONREVERSING ATTACHMENT FOR MOTOR DRIVEN PUMP HEADS Filed Jan. 11 1926 4 Sheets-Sheet 4 C494 5 JOHMSO/V,

ATToA sz- 'Padzentevzl June 17, 1930 omrso STATEfi PATENT caries CARL E. JOHNSON, OF LOS ANGELES, CALIFORNIA, ASSIGNOR T0 UNITED STATES ELEC- TRICAL MANUFACTURING COMPANY, OF LOS ANGELES, CALIFORNIA, A. CORPORA- TION OF CALIFORNIA BOTTOM ATTACHMENT FOR NONREVERSING ATTACHMENT FOR MOTOR-DRIVENPUMP HEADS Application filed January 11, 1926. Serial No. 80,685.

My invention relates to vertical turbine pumps and particularly to pump head constructions which include an electric motor.

A common type of vertical turbine pump has a pump head having a driving motor connected directly thereto. A column pipejusted so that the im ellers do not engage the housing inside w ich they revolve as otherwise there would be wear and friction on these parts.

It is an object of this invention to provide a pump head having means or adjusting the vertical osition of the pump shaft and its attached lmpellers.

It is another object of this invention to provide an adjustment means of this character which is placed between the pum shaft and the motor shaft.

It is a further object of the invention to rovide an adjustment means having an adustment member which also serves as a bearing housing and support for one'of thebearings of the driving motor.

- It is a still further object of the invention to provide an adjustment means in which the motor shaft is moved vertically with the pump shaft.

The pump shaft is usually composed of lengths of shafts which are connected together by couplings. If the pump is run in the wrong direction, the lengths of shafts will unscrew from the couplings and may- Thepump may be run' backwards by reason of an improper connection of the electric wires to the driving motor where the ordinary form of polyphase motor is used.

It is ah object of this invention to provide a pum head having non-reversing means where y the pump shaft will be disconnected from the motor shaft when the lengths of shafts start to unscrew from the couplings and before they are entirely unscrewed.

It is another object of the invention to provide a pump head in which the vertical adjustment means and the non-reversing means are embodied in the same unit.

It is a still further object of this invention to provide an arrangement of this char acter in which a pump shaft is supported by a ball and socket means and which is releasably locked against rotation relative to the motor shaft by means. of a horizontal bar which engages a member supported by the motor shaft.

Other objects and advantages of the invention will be made evident hereinafter.

Referring to the drawings in which I illustrate different embodiments of my invention,

Fig. 1 a pump head having employed therein an adjustment means and a non-reversing means embodying my invention.

Fig. 2 is an enlarged fragmentary section taken on the line 2-2 of Fig. 1.

, Fig. .3 is a section taken on the line 33 of Fig. 2.

Fig. 4 is a section taken on the" line 44 of Fig. 2. Fig. 5 is an enlarged fragmentary section showing a second form of my invention.

Fig. 6 is a section taken on the line 6-6 of Fig. 5.

Fi 7 is a fragmentary section taken on the line 7--7 of Fig. 5.

is a vertical section taken through I Fig. 8 is a fragmentary vertical section taken on the line 101O of Fig. 9 and showing in detail the fourth form of my invention.

Fig. 11 is a view taken as indicated by the line 11-11 of Fig. 10.

Fig. 12 is a fragmentary sectional view taken through a fifth form of my invention head is employed. A web 22 of the pump body supports a table 23 which carries a driving motor 24. A base 25 of the motor 24 is secured to the table 23 by means of bolts 26. The motor 24 has a stator 27 which surrounds a r'otor28. The upper end of a motor shaft 30 on which the rotor 28 is carried has an upper bearing head 31 secured. thereto. This bearing head 31 is engaged by an inner race of a bearing 32. The outer race of the bearing 32 is carried in a bearing support 33. The bearing head 31, the bearing 32 and the bearing support 33 are situated in an upper bearing chamber 34 which may be supplied with oil by an oil inlet 35. The upper end of the motor shaft 30 extends into the bearing chamber 34 through an oil over-flow tube 37. The lower end of the motor shaft 30 extends through a lower bearing chamber 38 which may be supplied with oil through an oil inlet 39. A bearing sleeve 40 is pressed on the shaft 30, this bearing sleeve journaling in a lower bearing bushing 42 which is carried by a bracket 43 in the lower bearing chamber'38.

The lower end of the motor shaft 30 extends intoa space 45 between the table 23 and the water passage 21. The lower end of the shaft 30 also extends into an opening 47 formed in the upper end of a coupling member 48 and is rigidly secured therein by means of a tapered pin 50 which is secured in place by a nut 51 threaded on the end thereof. The lower portion of the coupling 48 is provided with a threaded socket 52 which is formed concentrically with the motor shaft 30. Threaded into the socket 52 from the lower end thereof is a threadedadjustment member in the form of a quill 53. The lower end of the quill 53 is polygonal, as indicated at 54, for the application of a Wrench for turning the quill relative to the coupling 48 so that the quill may be screwed into or out of the coupling. The coupling 48 is provided with an annular flange 55 having cavities 5; into which a bar may be extended for holding the coupling from rotation while the quill is being adjusted therein. The quill 53 is provided with diametrically opposite key slots 57 and the socket 52 is provided with diametrically opposite key slots 58. The

key slots

57 and 58 are arranged to register with each other, and lock keys 60 are extended thereinto for locking the quil'l 53 andthe coupling 48 against relative rotation. The lower ends of the keys 60 have heads 61 which are held in engagement with a lower face 62 of the coupling 48 by means of a lock nut 64 which is threaded on the lower end of the quill 53. The keys 60 and the lock nut 64 comprise lock means for securing the quill 53 and the coupling 48 against relative rotation.

Extendin from a pump section of the turbine pump not shown) is a pump shaft 66. This pump shaft 66 extends through a stuffing box 67 of the head 20 into the space 45. The pump shaft 66 and the motor shaft 30 are in axial alignment. The upper end of the pump shaft 66 extends into a concentric opening 69 of the quill 53. As shown best in Figs. 2 and 4, the upper end of the pump shaft 66 has a supporting member in the form of a horizontal cross bar 70. The ends 71 of the cross bar form projections which extend from opposite sides of the upper end of the pump shaft 66 and are adapted to rest in slots 73 formed in the upper end of the quill 53. These slots 73 connect with an upper end 74 of the quill 53. The cross bar 70 rests in the bottom of the slots 73 of the quill 53 and the pump shaft 66 is thereby supported.

As mentioned in the first part of the specification, before setting a pump into actual operation it is necessar to adjust the axial or vertical position 0 the pump shaft so that the impellers which are secured at the lower end thereof will not engage parts of the pump section in which they are positioned. In my invention this is accomplished in the following manner. The lock nut 64 is unscrewed from the quill 53 and the lock keys 60 are removed from place. A wrench is then applied to the lower polygonal portion 54 of the quill 53 and the coupling is held from turning, and the quill is rotated in either direction to raise or lower it as necessary. If the impellers scrape on the lower bearings the quill 53 must be raised, and if they scrape on the upper bearings the quill must be lowered. Since the pump shaft 66 is supported by the quill'53 any vertical movement of the quill 53 results in a vertical movement of the pump shaft 66. After the proper vertical position of the pump shaft 66 is obtained, the

key slots

57 and 58 should be aligned. The threads of the socket 52 and the quill 53 are quite fine so that half a rotation of the quill 53 will make'but little difference in the vertical position of the shaft 66. Therefore, the

key slots

57 and 58 may be aligned without causing any disadjustment of the pump shaft. The lock keys 60 are then inserted into the

key slots

57 and 58, whereafter the lock nut 64- is threaded in the lower end of the quill motor 24 and the pump is set into actual operation.

As mentioned heretofore, it sometimes occurs that the electric wires are improperly connected to the motor 24 and the motor is run in a reverse direction. This rotates the pump shaft 66 in the-wrong direction and it will cause an unscrewing of the lengths of shafting which form the pump shaft 66 from the couplings which connect these lengths of shafts together. Since the lower end of the shaft is held in a certain axial position due to the positioning of the impellers between the bearings of the pump section, when the couplings start to unscrew the upper end thereof will move upwardly. As shown in Fig. 2, the pump shaft 66 and the motor shaft will be disconnected when the upper end of the pump shaft 66 rises into the position indicated by dotted lines 77. As the upper end of the pump shaft 66 rises, the end 71 of the cross bar 7 0 rises in the slots 7 3; and when the pump shaft reaches the position indicated by the dotted lines 77, the ends 71 of the cross bar 70 are removed entirely from the slots 73 and the pump shaft 66 is therefore disconnected from the quill 53. The motor shaft 30, the coupling 48 and the quill 53 may rotate relative to the pump shaft 66.

In Figs. 5, 6 and 7 I show a second formof my invention. The lower end of a motor shaft 8 1, which is equivalent to the motor shaft 30, is supported by a bearing 85 which is supported in a lower hearing chamber 86, the upper end of which is closed by a cover 87. The lower end of the motor shaft 84 in this second modification is provided with a smooth socket 88. Extending upwardly through an over-flow tube 90, which extends into the bearing chamber 86, is a pump shaft 91 which is concentric with the motor shaft 84. This pump shaft 91 is equivalent to the pump shaft 66. The upper end of the pump shaft 91 extends into the socket 88.

- The extreme upper end of the pump shaft 91 is provided in the form of a head 92 having a threaded socket 93, into which the upper end of the pump shaft proper is threadedly secured. As shown in Fig. 7, the upper end of the head 92 is provided with an annular channel 95. Formed above the annual channel 95 is a pair of diametrically opposite slots 96, the lower ends of which open into the annular channel 95. Surrounding the lower end of the motor shaft 84 is an adjustment member in the form of a ring 97 The ring 97 is locked in a certain axial position on the motor shaft 84 by lock meansin the form of upper and

lower lock nuts

99 and 100, which are situated on an externally threaded portion 101 of the motor shaft 84.-

The rin 97 has a pair of diametrically op posite t readed openin s. 103, into which threaded portions 104 o supporting means in the form of supporting pins 105 are located. These supportin pins 105 have heads 106 by means 0% which they are threaded into place. The supporting pins 105 extend inwardly from the ring 97 through vertically elongated slots 11.0 formed in the lower end of the motor shaft 84, connecting with the socket 88. Inner reduced ends 111 of the supporting pins 105 extend into the slots 96 of the head 92, engaging the walls forming the upper ends of the slots 96 and supporting the pump shaft 91.

The axial position of the pump shaft 91 is adjusted as follows: If the pump shaft 91 is to be raised, the upper lock nuts 99 are loosened and the lower lock nuts 100 are advanced upwardly. This raises the ring 97 which raises the supporting pins 105. The supporting pins 105 being in engagement wvith the head 92, therefore raise the head er lock nuts 100 are advanced downwardly,

which allows the ring 97 to be lowered. After the lowering adjustment is effected the upper lock nut 99 may be tightened against the ring 97.

If the motor is run in a reverse direction and the couplings of the pump shaft 91 start to unscrew, the upper end of the pump shaft 91 will move upward. The slots 96 therefore move upwardly from engagement with the inner reduced ends 111 of the pins 105 and the head 92 will be disengaged from the supporting pins 105 when the pump shaft 91 has moved upward sufiiciently to move the annular channel 95 into the same plane as the pins 105. At this time the motor shaft 84: may move relatively to the pump shaft 91.

In Fig. 8 I show a third form of my invention which is very similar to the second form shown in Figs. 5, 6 and 7. In Fig. 8 I show a motor shaft 120 which is equivalent to the

motor shafts

30 or 84. The lower end of this motor shaft 120 is'supported by a bearing 121. The bearing 121 is supported in a bearing chamber 122 which may be closed by a cover 123. The motor shaft 120 has a socket 124., the upper end of which is somewhat smaller than. the socket 88 of the modification shown in Figs. 5, 6 and 7. A pump shaft 126 extends through the bearing chamber 122 into the cavity 124. The upper end of the pump shaft 126, instead of being enlarged by a head as in Figs. 5, 6 and '7, is of uniform size. This is the reason for making the upper part of the socket 121 of smaller diameter than the upper end of the socket 88. The upper end of the pump shaft 126 is provided withan annular channel 128 and a pair of diametrically opposite slots ened into place.

masses 129, the lower ends of which connect with the annular channel 128. The lower end of the motor shaft is externally threaded at and upper and lower lock means in the form of upper and lower lock nuts 132 and are threaded thereon which carry an adjustment member in. the form of ring 135 therehetwcen. This ring 135 surrounds the motor shaft 126 and has a pair of diametrically opposite threaded openings 137 which threaded portions 138 of supporting means are carried, these supporting means being provided in the form of supporting pins .140. The supporting pins 140 have heads 1 11 by which they may be tigh The supporting pins 149 extend into the socket 12 1 through vertically elongated openings 143 formed in the lower end of the motor shaft 120. Inner reduced ends 145 of'the supporting pins 140 extend into the diametrically opposite slots 129 engaging the upper walls of the slots 129 and thereby supporting the motor shaft 126. The axial or vertical position of the pump shaft 126 is adjusted in the same manner that the pump shaft 91 in Figs. 5, 6 and 7 is adjusted. The ring 135 is advanced upwardly or downwardly on the lower end of the motor shaft 120 by loosening and tightening the upper and

lower lock nuts

132 and 133. If the motor in the third modification is run in a reverse direct-ion, the couplings may unscrew and the upper end of the pump shaft 126 will move upwardly relative to the motor shaft 120, causing the annular channel 128 to move into the plane of the inner reduced ends 145 of the supporting pins 140, thus disengaging the pump shaft 126 from the motor shaft 120 and permitting the motor shaft 120 to rotate free of the pump shaft 126.

I will now describe the fourth form of my invention which is shown in Figs. 9, 10 and 11 of the drawings. A pump head body provides a water passage 156 through which water being pumped passes from the well (not shown) into a discharge pipe 157 which connects to the body 155. A driving motor 158 is supported above the head at the upper end of a wall 159 of the head body 155. This driving motor 158 has a stator 160 which surrounds a rotor 161. An upper end of a motor shaft 162 which carries the rotor 161 extends into an upper bearing chamber 163. An inner race of an upper radial bearing 164 is secured on the upper end of the motor shaft 162 b lock nuts 166. The outer race of the upper caring 164: engages a side face 167 and may slide vertically in the upper bearing chamber 163.

Referring particularly to Fig. 10, the lower 'end of the motor shaft 162 extends into a'lower bearing chamber 168 which is provided by an adjustment member 169. The upper end of the lower bearing chamber 168 is closed by a cover 170 which has an opening 171 through which the lower end of the motor shaft 162 may extend. An inner race of a lower thrust bearing 173 is placed on a reduced face 1.74; formed at the lower end of the motor shaft 162. An outer race of the bearing 173 is supported on an annular face 17 6 of the adjustment member 169. Extending upwardly from the lower wall of the adjustment member 169 is an over-flow tube 177 which extends into an opening 178 of the lower end of the motor shaft 162.

The adjustment member 169 is externally threaded as indicated at 180 and is threadably received into a threaded cavity 181 provided by the head body 55. The upper end of the adjustment member 169 is provided with an annular flange 182 having openings 183 for the application of a bar or spanner wrench whereby the adjustment member 169 may be rotated in order to advance it up or down in the threaded cavity 181. The flange 182 is also provided with vertical openings 184E through which a lock bolt 185 may extend. This lock bolt 185 threads into a threaded opening 186 formed adjacent to the threaded cavity 181 for locking the adjustment member 169 in position after it has been adjusted.

Connected at its lower end to the opening 178 of the motor shaft 162 is a concentric socket 190. Extending upwardly from a well (not shown) and through an oil tube,

191 is a pump shaft 192. The pump shaft 192 extends upwardly through the cavity 181 and through the bearing chamber 168 of the adjustment member 169, there being an opening 193 formed in the over-flow tube 177 through which the upper end of the pump shaft 192 may extend. As shown best in Fig. 11, the upper end of the pump shaft 192 is provided withan annular channel 194 and with diametrically opposite slots 196,the lower ends of which slots 196 connect with the annular channel 194. The lower end of the motor shaft 162 is provided with diametrically opposite threaded openings 197 which are adapted to receive threaded portions 198 of supporting members in the form of supporting pins 199. These supporting pins 199 have heads 200, by means of which they are screwed into place. Inner reduced ends 202 of the supporting pins 199 extend into the socket and extend into the slots 196 of the pump shaft 192. These reduced ends 202 engage the upper walls of the slots 196 in a manner to support the pump shaft 192.

The axial or vertical position of the pump shaft 192 is adjusted as follows: The lock bolt 185 is first removed from place and the adjustment member 169 is thereafter rotated in either directionin order to advance it either up or down so as to axially move the pump shaft 192 into the desired position. If the pump shaft 192 must be raised, the adjustment member 169 is moved in a direction to raise it. raised with the adjustment member 169, the upper bearing 164 sliding in the upper hearing chamber 163, The. supporting pins 199 are moved with the motor shaft 162 and the pump shaft 192 is moved upwardly therewith by reason of the engagement of the inner reduced ends 202 of the pins 199 in the slots 196. If the pump shaft is to be lowered, the adjustment member 169 is rotated in an oppositedirection which lowers it, and also lowers the motor shaft 162, the upper bearing 15 1 sliding in the upper bearing section 163. The pump shaft 192 is lowered. with the motor shaft 162,

If the motor 158 is operated in a reverse direction and the couplings of the pump shaft 192 unscrew, the upper end of the pump shaft 192 will move upwardly until.

the inner ends 202 of the supporting pins 199 in the annular channel 194:, at which time the motor shaft 162 may rotate relatively to the pump shaft 192.

The modification of my invention just des ribed difiers essentially from the other modifications by reason of the fact that the motor shaft 162 thereof is moved axially or vertically with the adjustment member 169, whereas in the other modifications. of the invention the motor shafts did not move axially.

In 12 and 1.3 I show the fifth form of my invention. Referring to these figures, 200 represents a coupling member having a hole 221 formed in the upper end thereof, into which a motor shaft 202 extends, this motor shaft being secured to the coupling 200 by insane of a tapered pin 203. The coupling member 200 has a threaded cavity 205 formed from the lower end thereof, into which an adjustment member in the form of a quill, is screwed. The adjustment member is provided with key slots 207 and the coupling member is provided with ke slots 208.,

intowhich slots

207 and 208 loci; keys 209. are inserted. These look keys 209 are held in place by a lock nut 210, this" construction being very similar to that shown in Figs. 1 to 1 inclusive. The uill 206 has an opening 215 through whic a puns. shaft 216 extends. The upper end of tne ump shaft 216 is threaded at 217 and a Ball 218 having a spherical lower face 219 is secured thereon. The ball 218 is adapted to rest in a socket 220, engaging a lower spherical face 221 thereof, and thus supporting the pump shaft 216. Ex-

tending diametrically through the upper part of the ball 218 is a cross bar 223. The ends of the cross bar 223 form projections which extend from the ball 218 and extend into slots 224 formed at the upper end of The motor shaft 162 is the quill 206.. It should be noted that the ball 218 is'provided for the purpose of supporting the pump shaft and the bar 223 is provided for lockingthe pump shaft 216 and the motorshaft 202 together against rotation. When the pump shaft 216 un screws, the upper e'nd is lifted and the cross bar 223 is removed from the slots 224 and a relative rotation between the pump shaft 216 and the motor shaft 202 may occur.

In the modifications of my invention the vertical adjustment of the pump shafts may be readily accomplished. The adjustment members in all forms of the invention are located in a space between the water as sage of the head and the motor so that t .ey may be accessible. The construction of all the modifications of my invention are very simple and, furthermore, are rigid in con-- struction. Considerable space is saved by incorporating the adjustment means and the non-reversing means of a single unit, and this is an important feature of the invention,

I claim as my invention:

1. In. a deep well turbine pump, the combination of: a pum head; a vertically extending' motor shat rotatably mounted in said pump head; a pump shaft extending into a position adjaent said motor shaft and formed in lengths adapted to unscrew one from the other to raise the top of said pump shaft should said shalt be rotated in a re verse direction; extensions on the upper end of said pump shaft; and means rivably connected to saidv motor shaft and provid ing slots opening upward and in which said. extensions rest unless said shaft is rotated. in a reverse direction at which time said extensions are removed from said slots.

2a In a deep well. turbine pump, the combiuation oi': a pure head; a vertically extending motor sha rotatably mounted in said pump head; a pure shaft extending adjacent said motor sha' and formed in lengths adapted to unscrew one from the other to raise the top at said pump shaft should. said shaft be rotated in a reverse direction; and intereugaging means drivably connecting said shafts as a function of the vertical position of the top of said pump slurft.

3. In combination: a pum head; a vertically extending motor s aft rotatabl" mounted in said pump head; a pump sha t extending adjacent and in axial alignment with said motor shaft; an adjustment mom-- ber axially adjustable with respect to said motor shaft; and connecting means releasabl connecting said adjustment member and sai pump shaft.

4, In combination: apump head; a vertically extending motor shaft rotatablv mounted in said pump head; a pump shaft extending adjacent and in axial alignment with said moton shaft; an adjustment member axially adjustable with respect to said motor shaft; and connecting means drivably connecting said pump shaft and said adj ustment member together whereby said pump shaft is supported. by said adjustment member.

5. In combination: a pump head; a vertically extending motor shaft rotatabl mounted in said pump head; a pump sha' extending adjacent and in axial alignment with said motor shaft; an adjustment member; a coupling adjustably connecting said adjustment member and said motor shaft; and connecting means drivably connecting said adjustment member and said pump shaft. ,7

6. In combination: a pump head; a vertically extending motor shaft rotatably mounted in said pump head; a ump shaft extending adjacent and in axia alignment with said motor shaft; an adjustment member; connecting means operatively connecting said pump shaft and said adjustment member; a coupling rigidly secured to said motor shaft and threadedly: retaining said adjustment member; and lock means for locking said adjustment memter relative to said coupling. 4

A combination as defined in claim 6 in which said lock means comprises a key, and including a lock nut threaded on said adjustment member and bearing against said lie to prevent its removal.

8. combination as defined in claim 5 ineluding locking means for locking said coupiing relative to both said motor shaft and said adjustment member.

9. In combination: a pump head; a vertically extending motor shaft rotatahl mounted in said pump head; a pump sha t extending adjacent and in axial alignment with said motor shaft; an adjustment member axially adjustable with respect to said motor shaft; and a cross bar extending laterally across the upper end of said pump shaft, said cross bar being adapted to rest in a slot formed in said adjustment member, and to be removed from said slot when said pump shaft moves upward relative to said adjustment member.

10. In combination: a pump head; a vertically extending motor shaft rotatabl mounted in said pump head; a pump sha t extendin adjacent and in axialalignment with sai motor shaft; and adjustment member axially adjustable with respect to said motor shaft; 9. ball secured to the upper end of said pump shaft and resting in a socket of said adjustment member whereby said pump shaft is supported; and means for drivably securing said. ball and said adjustment member together.

11. In combination: a pump head; a vertically extending motor shaft rotetably memes mounted in said pump head; a pump shaft extending adjacent and in axial alignment with said motor shaft; an adjustment member axially adjustable with respect to said motor shaft; a ball secured to the upper end of said pump shaft and resting in a socket of said adjustment member whereby said pump shaft is supported; and a cross member carried by said ball and extending into slots formed 1n said adjustment member for drivably connecting said adjustment member and said pump shaft.

12. In combination: a pum head; a vertically extending motor s aft rotatabl mounted in said pump head; a pump sha extending adjacent and in axial alignment with said motor shaft; an adjustment member axially adjustable with respect to said motor shaft; and connecting means connecting said pump shaft and said adjustment member together, said connecting means being adapted to disconnect said pump shaft and said adjustment member when said pump shaft moves upward relative to said adjustment member.

In testimony 'whereof, I have hereunto set my hand at Los Angeles, California, this 4th day of January 1926. i

' CARL E. JOHNSON.