US2038125A - Power pump head - Google Patents

Description

W 19361 G. A. PATTERSON El AL. 299339125 POWER PUMP HEAD Filed Sept. 14, 1953 3 Sheets-Sheet l T i i.

Amid 21, 1936. G, A, PATTERSON ET AL gfi3ym5 POWER PUMP HEAD Filed Sept. 14, 1933 5 Sheets-Sheet 2 21, 1936 G, A, PATTERSON r AL 2,038,125

POWER PUMP HEAD Filed Sept. 14, 1933 3 Sheets-Sheet 3 Patented Apr. 21, 1936 UNITED STATES POWER PUMP HEAD Glenn A. Patterson, Chicago, and Richard Martin, Cicero, Ill., assignors to Crane 00., Chicago, 111., a corporation of Illinois 2 Application September 14, 1933, Serial No. 689,366

11 Claims.

This invention pertains to improvements in driving mechanism for deep well pumps.

Among the objects of this invention is to afford improvements in the transmission of power to the pump to provide a more compact unit than was heretofore available, and to distribute more evenly the strains imposed upon the mechanism for a resultant saving in power.

Other objects include improvements in selilubrication of the driving mechanism.

Another object of the invention is to provide an air pump incorporated in the device which will be conveniently placed, conserve space and utilize structures which also have other functions.

Another object of the invention is to provide a deep well pump driving mechanism compactly and sturdily constructed, and designed to facilitate the removal of the pump driving rod.

Other objects and advantages are inherently possessed by the invention and should become apparent from a perusal of this specification.

In the drawings:

Fig. 1 is a vertical central section of the housing and the mechanism contained therein made in accordance with this invention,

Fig. 2 is a vertical section on the line 2-2 of Fig. 1,

Fig. 3 is an enlarged detail view of a portion of the mechanism, and

Fig. 4 is a horizontal section on the line 4-4 of Fig. 1.

Referring now to the drawings,- the mechanism is provided with a housing generally indicated as I in which are mounted a pair of guide posts 2 and 3 on which a cross head 4 is intended to slide. Four guide sleeves 5 and 5 are provided on these two guide posts to keep the cross head always in proper alignment. 'A pin 6 is fixed in the cross head by means of a set screw 1 and carries on its outer end slidably thereon a plunger rod connecting member 8. The pin 6 also provides a bearing for a connecting rod 9 which is also pivotally connected with a crank pin 1 I fixed eccentrically in a spur gear I2, the latter being rotatable upon a trunnion. I 3 and in mesh with a small pinion gear I4 which is integral with a shaft IE, on the outer end of which is splined a large pulley I6. This pulley may be driven in any suitable manner, but preferably is driven by a belt H running over a pulley IS on the driving motor l9. The motor is conveniently mounted on top of the casing in any suitable manner.

' A removable side cover or closure member 20 closes the large: opening in the front of the housing. I

It will be noted that the lower part of the housing I has a back Wall 2|, a bottom wall 22 and a front wall 23, together with side walls 24 and '25, providing therefore in this closed well a convenient oil receptacle. the housing interior, or well, through an oil filler 25 conveniently located on side wall 25 where an oil drain plug 21 also is located. The gear l2 therefore rotates constantly in a bath of oil and Oil may be poured into *5 carries oil on its teeth to the point where gears 10 I4 and I2 mesh. At thisposition the oil will be squirted out by the gear teeth into the ball bearing 23 and also into an oil trough 29 at the other side of the gear. The oil passes through the bearing 28 into a chamber 3l and thence into the 15 ball bearing 32. Any excess of oil flowing past the ball bearing will be caught by the cooperative action of a fixed non-rotatable annular collar 33 and a rotatable collar 34, the latter being fitted on the shaft l5. These collars do not rub 20 together but are positioned very close together and they cooperate to prevent any escape of oil along shaft I5 toward the large pulley l6. Excess of oil in bearing 32 will therefore be diverted back into the chamber 3| and through the passage 35 25 back into the housing well.

The oil is collected in the trough 29 whenever that trough is low enough to receive oil squirted from the meshing gears. The oil thus collected in the channel 29 will be diverted in part through 0 a tube 36 and in part through a tube 31 to the lower cross head bearings 5' which slide on the guide posts. At the top of each of these bearings oil collecting recesses 38 and 39 are provided which will carry oil entirely around the 35 guide posts, permitting lubrication of the grooved bearings therebelow and carrying a quantity of oil up the guide posts and depositing it'in grooves 40 on said guide posts as the cross head lifts.

On the downstroke of the cross head the upper 40 cross head guide bearings 5 will overlap the grooves 40 in such a way that oil grooves 4! in upper guide bearings 5 will pick up a quantity of oil and, as the cross head lifts, carry it further up the guide posts to the limit of the up- 45 On the next through channels 45 and 46 along the top of the cross head inwardly toward the center and thus reach a central recess 4'! to aiford lubrication to the upper connecting rod bearing 48. The lower connecting rod bearing is, of course, lubricated by dipping directly into the oil. The surplus of oil from any of these bearing surfaces thus lubricated may, of course, return to the crank case or housing 24 to be used over again.

An upper section of the pump plunger rod comprises the rod 49 threaded into the connecting member 8 and at its other end threaded into the next section of the pump plunger rod. The top of the section 5| is enlarged and upon this is seated a rubber expander 52 surmounted by a cup leather 53, a separating washer 54 of any suitable metallic or non-metallic material and another cup leather 55 partially surrounding a rubber expander 56. Above the latter rubber plug is a metal washer 5'! which is threaded onto an expander sleeve 58. Threaded on top of the sleeve are an adjusting nut 59 and a lock nut 60. A suitable packing gland including a collar 6! and nut 62 provides an appropriate air seal surrounding the sleeve.

The combination of cup leathers and rubber expanders just described form on the rod 49 a piston for an air pump which reciprocates in a cylinder 63. With each downstroke of this piston air is admitted through a check valve 64 and on the upstroke of the piston the check valve 64 closes while the spring seated ball 65 becomes unseated and the air is then forced through the port 66 into the stream of water which at that time is rising through the pipe 61.

The lifter pump which is connected to the plunger rod does not form a part of the invention, hence is not shown, but it will be understood that the water being lifted flows upwardly through the pipe 6'! into the pump head chamber 68 and thence into a delivery pipe 69 as it becomes mingled with the air received from the air pump.

The pump head, generally indicated as 10, is secured to the front wall 23 of the housing I by means of cap screws such as the screws 72, any necessary number of them being employed to accomplish a firm mounting of the pump head. A plug H is provided to drain the pump head chamber and also acts as a vent while draining drop pipe 61 to below the frost line. A depending circular flange 13 is provided to receive a casing extending down into the ground outside of the water pipe to exclude the entrance of rain or other surface waters. The top of the pump head chamber 68 is covered by a plate 14 in which the air inlet and outlet valves are mounted. This cover plate 14 may be secured to the top of the pump head in any manner such as by cap screws (not shown). The cylinder 63 is secured to the pump head cover.

The water pump and air pump being synchronized, assure an adequate supply of air for maintaining pressure in the system to which the water is delivered. The water rising past the cylinder 63 keeps it cool and thus prevents the air pump from overheating. The downward stroke of the air piston displaces water from the cylinder into the water pipe and thus tends to keep the pressure therein more uniform during operation of the pump.

The rubber expanders 52 and 56 may be expanded by turning nut 59 which is made to be turned by hand just enough to give suificient pressure on cup leathers 53 and 55 to keep the air compressor functioning properly. The lock nut 66 is to secure nut 59 from loosening.

Simply by removing the side cover 29, withdrawing the set screw and driving the connecting rod pin 6 inwardly to disconnect it from the pump driving rod end 8 and removing the packing gland assembly the pump plunger rod may be lifted vertically out of the well without disturbing other parts of the apparatus.

Since the plunger rod connecting member 8 is slidable on the pin 6 the rod is self-centering or self-aligning in respect to the cylinder 63. This self-aligning feature reduces friction and wear on the cylinder and the packing.

The device operates as follows. The motor I9, by means of a belt l1, drives the large pulley l 6 which, through the pinion M, rotates the gear I2 carrying a crank pin II. The latter by means of the connecting rod 9 and wrist pin 6 raises and lowers the cross head 4 as the gear revolves and accordingly raises and lowers the pump plunger rod 495 I The cross head slides on the guide posts 2 and 3 and is securely maintained in proper vertical alignment. The oil for lubrication of all of the parts, except those that move directly through the oil bath, is picked up by the gear 12 and is squirted out of the teeth of that gear as they mesh with the teeth of the pinion I4. The path of the oil from that point on for the lubrication of the various bearing surfaces has been described above. With each lift of the pump plunger rod air is pumped into the water through valve 65. The mechanism for starting and stopping the pump does not form a part of this invention.

It should be understood that the principles of this invention may be utilized in structures which differ from the illustrated embodiment yet are comprehended and included within the scope of the claims which follow.

Having shown and described this invention, we claim:

1. In a deep well pump apparatus, a housing and a pair of guide posts therein, a cross head having a pair of vertically extending spaced apart webs and provided with a pair of upper and a pair of lower bearings integral with said webs for slidable mounting on said posts, a wrist pin through said cross head perpendicular to the plane of said posts, a pump driving rod connected to said pin at one side of said posts, a connecting rod positioned between said webs and connected with said pin and movable in the plane of said posts, a rotatable gear having a crank pin thereon connected to said connecting rod mounted for rotation in a plane parallel to said posts, and means for driving said gear.

2. In a deep well pump apparatus, a housing and a pair of guide posts therein, a cross head having a pair of vertically extending spaced apart webs and provided with a pair of upper and a pair of lower bearings integral with said webs for slidable mounting on said posts, a wrist pin through said cross head perpendicular to the plane of said posts, a pump driving rod connected to said pin at one side of said posts, a connecting rod positioned between said webs and connected with said pin and movable in the plane of said posts, a rotatable gear having a crank pin thereon connected to said connecting rod mounted for rotation in a plane parallel to said posts, means on the web lying between the connecting rod and said gear for collecting oil and conducting it to said lower bearings, and means for driving said gear.

3. In a pump apparatus, a housing having a closed bottom lubricant chamber therein, a pair of guide posts mounted therein, a cross head slidably mounted on said posts carrying a wrist pin perpendicular to the plane of said posts, said cross head being provided with upper and lower spaced apart bearings on each post, a gear rotating partly submerged in lubricant in said chamber provided with a crank pin, a rod conmeeting the crank pin and wrist pin moving in the plane of said posts, one side wall of said chamber having an aperture through which said wrist pin extends for connection to a pump driving rod, a second gear meshing with the first gear at its upper tangent, the teeth of said gears being constructed and arranged to expel lubricant as they mesh toward said cross head and toward and into a bearing for the second gear, a bearing for the second gear being mounted and extending through one of said chamber walls for supporting a rotatable shaft on which the second gear is mounted, conduit for collecting said lubricant expelled toward the cross head and for distributing it to the lower cross head bearings on both posts, the upper cross head bearings being so spaced as to pick up for self-lubrication oil deposited on the guide posts by the lower bearings, and means connected with said upper bearings for delivering oil to said wrist pin.

4. In a deep well pumping apparatus, a housing and a pair of vertical guide posts mounted thereon, a cross head slidably mounted on said posts, a pump driving rod and means connecting the-same to said cross head at one side of the plane of said posts, a connecting rod pivotally connected with said cross head between the posts and in the plane thereof and movable in said plane, a rotatable gear connected to the lower end of said connecting rod for driving the same and lying in a plane parallel to said posts, said cross head having a pair of upper bearings and a pair of lower bearings slidably mounted on said posts and a web connecting said bearings lying between the connecting rod and said gear, means on the surface of said web adjacent said gear for collecting oil delivered thereto by said gear and conducting it to said lower bearings, and means for driving said gear.

5. In a pump apparatus, a closed bottom lubricant chamber and a pair of guide posts vertically mounted therein, a cross head slidably mounted on said post provided with upper and lower vertically separated bearings on each post, a wrist pin carried by said cross head, a gear mounted on one of the chamber walls for rotation in said chamber and provided with a crank pin, a rod connecting said crank pin and wrist pin in and movable in the plane of said posts and cross head, a shaft mounted in a wall of said chamber having a gear fixed thereon meshing with the first gear above the axis of the latter, the first gear being arranged to rotate partly submerged in an oil bath in said chamber and as it meshes with the second gear being constructed to expel oil from the meshing teeth toward said cross head, means carried on the side of said cross head for picking up the oil so expelled, and conduits for delivering oil so picked up to the lower cross head bearings.

6. In a deep well pumping apparatus, a housing having a closed bottom chamber, said chamber being provided with an aperture in one side, a pair of guide posts mounted in said chamber and a cross head slidably mounted on said posts, a wrist pin removably carried by the cross head midway between said posts and extending outwardly through said aperture, a connecting rod for driving .said cross head moving in the plane of said posts, a pump driving rod removably secured to the outer end of said pin, a pump head secured to the outside of said chamber including a housing aligned to receive the driving rod in such a vertical position that when the driving rod is disconnected from the wrist pin it may be lifted vertically up past said chamber until entirely withdrawn, said pin extending through the connecting rod, the driving rod and the cross head and being removable from all three by a single longitudinal sliding motion.

7. In a deep well pumping apparatus, a closed bottom chamber adapted to contain an oil bath, a pair of guide posts upstanding in said chamber, a cross head slidably mounted between said posts carrying a wrist pin midway between the posts perpendicular to their plane, said chamber being provided with an aperture at one side above the oil level, said pin extending outwardly through said aperture for connection with a pump driving rod, a pump head mounted outside said casing below said aperture having a vertical guide for the driving rod so aligned that when said pin is disengaged therefrom said rod may be lifted through the head vertically past the side of the housing provided with said aperture, a driving rod constructed to extend through said pump head guide, and means partly immersed in the oil bath in said housing for reciprocating said cross head including a connecting rod movable in the plane of said guide posts connected with said wrist pin.

8. In a deep well pumping apparatus, a housing having a closed bottom provided with an aperture on one side a considerable distance above the housing bottom, a pair of guide posts upstanding in said housing, a cross head slidably mounted on said posts, a connecting rod movable in the plane of said posts and operatively connected to said cross head therebetween, means carried by the cross head extending outwardly through said aperture for attachment to a pump driving rod, a gear mounted inside of said housing carrying eccentrically a crank pin for connection with the lower end of said connecting rod and a'second gear meshing with the first fixed on a shaft rotatably mounted higherthan said aperture in a housing wall opposite said aperture, said shaft extending through said housing and having means on the outer end thereof for connection to a source of power.

9. In a deep well pumping apparatus, a housing having a closed bottom provided with an aperture on one side a considerable distance above the housing bottom, a pair of guide posts upstanding in said housing, a cross head slidably mounted on said posts, a connecting rod movable in the plane of said posts and operatively connected to said cross head therebetween, means carried by the cross head extending outwardly through said aperture for attachment to a pump driving rod, a gear mountedinside of said housing carrying eccentrically a crank pin for connection with the lower end of said connecting rod and a second gear meshing with the first fixed on a shaft rotatably mounted in a housing wall opposite said aperture, said shaft extending through said housing and having means on the outer end thereof for connection to a source of power, and a bearing surrounding said shaft positioned to receive oil squirted endwise by the meshing of the teeth of said ears.

10. In a pumping apparatus, a base and a pair of vertical guide posts mounted thereon, a cross head vertically slidable on said posts and having a, pair of upper and a pair of lower guide bearings, an annular recess in each of the lower bearings for receiving oil and wiping it along the posts as the cross head rises, the upper bearings being so spaced as to overlap on their downward travel the area so wiped by the lower bearings, a horizontally extending recess in each upper bearing and a vertically extending recess upwardly extending from each of said recesses, a horizontally extending annular recess in the upper edge of one of said upper guide bearings for collecting oil from a post on the upstroke of the cross head, a wrist pin carried by said cross head and a connecting rod connected thereto for driving the cross head, and a channel leading from the last said recess to a bearing surface on said wrist pin for lubricating the same.

11. In a pumping apparatus, a housing and a pair of vertical guide posts mounted therein, a cross head slidably mounted on said posts and having a pair of upper and a pair of lower guide bearings sliding on said posts, a Wrist pin carried by said cross head midway between said posts and a connecting rod connected thereto, means for delivering oil to the lower cross head bearings, said upper and lower bearings being so spaced and grooved as to enable oil from the lower bearing to be wiped upwardly on the posts to the .top of the upper bearings, and means for delivering oil from the top of the upper bearings to the connecting rod bearing surface on said wrist pin.

GLENN A. PATTERSON. RICHARD MARTIN.

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