US2411438A

US2411438A - Pump

Info

Publication number: US2411438A
Application number: US469386A
Authority: US
Inventors: Fred A Lane
Original assignee: LANE MOTORS Inc
Current assignee: LANE MOTORS Inc
Priority date: 1942-12-18
Filing date: 1942-12-18
Publication date: 1946-11-19
Anticipated expiration: 1963-11-19

Description

Nov. 19, 1946. F. A. LANE 2,411,438

l PUMP Filed nec. 1s, 19542 /llll 'lill/14111111,

ENTOR.

INV /Tetp i. .L4/wr,

hwg/vra.

Patented- -Nov.- 19 1.946

. UNITED-f sTA'ri-:s PATENT ori-ice Y PUMP "l, Fred A. Lane, Shelburn, Ind.. assigner to Lane Motors Incorporated, Shelburn, Ind., a. corporation of Indiana ApplicationDecember 18, 1942, Serial No. 469,386

` the description proceeds.

To the accomplishment o1 fthe above and related objects, my invention may be embodied in the forms illustrated in the accompanying drawing, attention being called to the fact, however, that the drawing is illustrative only, and that change' may be made in the specic constructions illustrated and described, so long as the scope of the appended claims is not violated.

Fig. 1 is a longitudinal section through one form oi pump constructed in accordance with my invention;

Fig. 2 is a transverse section taken substantial-` ly on the line 2-2 of Fig. 1 and looking in the direction of the arrows;

Fig. 3 is a transverse section taken substantially on the line 3-3 of Fig. 1 and looking in the direction of the arrows; Y i

Fig. i is an elevation ofthe rotary cam. forming an element of the'pump disclosed in Fig. l;

Fig. 5 is a at projection of the cam or Fis. i;

Fig. 6 is a longitudinal section through a second form of pump constructed in accordance with my invention; and

Fig. 'i' is a transverse 'section taken substan tially on the line 'i--l of Fig. c;

Fig. 8 is a sectional view of an operating detail.

Referring more particularly to the form of my invention disclosed in Figs. l to 5 inclusive, it will be seen that I have illustrated a housing 23, formed to yprovide a longitudinally extending cylinder 2|. At one end, said housing is formed with a socket 23 coaxial with the cylinder 2|, in which is mounted an anti-friction bearing 22 forming a journal mounting for one end oi a shaft 24, the other end of which is supported in an anti-friction bearing 25 carried in a suitable socket 26 formed in a closure head 21 9 Claims. (Cl. 10S-458) diametrically opposed to each other and each communicating withV the opposite ends of the cylinder 2|. An inlet port 3|) opensinto the chamber 28 and will normally be connected to a source of'fiuid to be pumped. Y

f Outlets ports 3| and 32 communicate respectively with opposite ends of the cylinder 2|. Keyed or otherwise suitably secured to that end of the shaft 24 adjacent the outlet port 32 is a disc 33 suitably formed with peripherally spaced sockets, paraxial with Ithe shaft 24, for the reception of a plurality of

tubes

34, 34a, 34h, 34C, and 34d. While five such tubes are shown, it will be understood -that any suitable number of such tubes may be used. 'I'he disc 33 is further formed with a. corresponding number of radially extending ports 35, each communicating with the interior of one of the said tubes. It will be readily seen that the diameter ofy the disc 33 is appreciably less than -the diameter of the cylinder 2|.

Sui-tably keyed or otherwise secured to the shaft 2d adjacent the opposite end of the cylinder 2| is a similar disc 36 similarly provided with sockcooperating withthe housing 2li to close that end i ets, peripherally spaced and paraxial with the shaft 23, receiving a similar series of tubes 31, 31a, aib, 37e, and 31d, peripherally staggered with relation to the tubes carried by the disc 33. `The disc 36 is similarly formed with radial ports 38, 33a, 38h, 38o, and 38d, respectively, communieating with the interiors of the said tubes carried by the disc 36 and opening through the outer periphery of the disc 36. It will be seen that the diameter of the disc 36 is considerably less than the diameter of the cylinder 2 l. i

suitably secured within the cylinderl 2| adjacent the outlet port 32 thereof'is a -block 39, shaped as a segment of an annulus having an external radius corresponding to the radius of the cylinder 2| and an internal radius corresponding to the radius of the disc 33, said block 39 being interposed between the disc 33 and the internal surface of the cylinder 2 I. Said block 39 is formed with a radially extendingport M registering with the outlet port 32 and with an arcuate groove 4| with which the ports 35 oi. the disc 33 successively register.

A similar block 42 is suitably secured in the opposite end of the cylinder 2| with its: radially extending port 43 in registry with the outlet port 3|, and with its arcuate groove 44 positioned for successive registry with the ports 38 etc., of the disc 36.

A cylindrical piston 45 is loosely mounted upon the shaft 24 between the

discs

33 and 36. Said piston is formed with an annular series of axially extending chambers 46, 46a, 46h, 43o, and 46d opening through that end of the piston adjacent the disc 36, and closed at their opposite ends, said chambers being formed to receive snugly and slidably the tubes 31, 31a, 31h, 31c, and 31d, respectively. The piston is further formed with a similarseries of chambers 41, 41a, 41h, 41e, and 41d opening through that end of the piston`4adjacentthe disc 33 and closed at their opposite ends, and formed and arranged to receive snugly and slidably Ithe .

tubes

34, 34a, 34b, 34o, and 34d, respectively.

It will be obvious that the engagement of the tubes` of the 31 series in the chambers of the 46 series, and the engagement of the tubes ofthe 34 series in the chambers of the 41 series, will provide a driving connection between the shaft 24 and the piston 45 of such character asto enforce participation of the piston 45 in rotary movement of the shaft 24, while leaving said piston free to reciprocate axially with respect to said shaft.

The piston 45 is formed with a cam track indicated generally by the reference numeral 48. Said cam .track is preferably of the form fully illustrated in Figs. 4 and 5, comprising a con-tinuous ygroove extending three times about the periphery of the piston 45 and comprising a rst reach 49 extending from the right-hand end of the piston as viewed in Fig. 1 to the left-hand end thereof within a peripheral extent of 270 degrees; a return reach 50 extending from the left-hand end of the piston to the right-hand end thereof within a peripheral extent of 270 degrees; a second advancing reach extending from the right-hand end of the piston to the lefthand end thereof within a third peripheral extent of 270 degrees; and a, second return reach 52 extending from the left-hand end of the piston to the right-hand end thereof within a fourth peripheral extent of 270 degrees. It will thus be seen that three complete rotations of the shaft 24 will produce two complete cycles of reciprocation of the piston 45.

Within a suitable projection 53 of the housing is stationarily mounted a cam follower 54 having a, toe 55 shaped for reception in the cam groove 48. Said follower 54 is oscillably received in the housing projection 53 and is held in place therein by a threaded cap 56.

With the parts in the positions illustrated in Fig. 1, rotation of the shaft in a clockwise direction as viewed from the right will carry with it the

discs

33 and 36 and their associated tubes, and will therefore cause clockwise rotation of the piston 45, whereby the follower foot 55 will be caused to' move through the reach 49 of the cam groove 48 to force the piston 45 toward the right. Such movement of the piston will tend to reduce pressure in that portion of the cylinder to the leftv of the piston, not only because of the withdrawal of the piston itself from that portion of the cylinder, but also by reason of the withdrawal of the tubes of the 34 series from the chambers of the 41 series. Thus, liquid present in that end of the cylinder will be drawn into the said tubes and chambers, through the ports 35 immersed in such liquid, and further liquid, to take the place of the liquid so drawn into the said chambers,

will be drawn from the source through the inlet port 30.

, ofthe 14 series.

, y 4 registry with the groove 44 of the block 42,'s0 that the liquid present in the chamber 46 and tube 31 will be forced outwardly through the outlet port 3|. Of course, it is to be understood that some sort of check valve arrangement will be associated with the outlet ports 3| and 32.

As the port 38 associated with the tube 31 moves out of registry with the groove 44, the port 38a will move into registry with said groove 44; and further movement of the piston toward the right will force liquid from the-chamber 46al and tube 31a out through the outlet port 3|.

As the shaft 24 completes 270 degrees of rotation, the follower foot 55 will move from the cam groove reach 49 into the reach 50 to start the piston on its return movement from the righthand end of the cylinder 2| toward the left-hand end thereof; and thereupon the above processes will be reversed. During such reverse movement described. A housing 6|) is formed to provide a cylindrical chamber 6| at one end of which is mounted an anti-friction -bearing 62 suitably supported in a pocket 63 coaxial with: the cylinder; and said bearing supports one end of a shaft 64, the opposite end of which is supported in an anti-friction bearing 65 mounted in a pocket 66 formed in a, closure head 61..

A chamber 68 provides communication, substantially at all times, between opposite ends of the cylinder 6|; and an inlet passage 19 opens into said chamber 66, being normally connected to a scurce of fluid to be pumped, Outlet ports 1| and 12 open from the opposite ends of the cylinder 6|, respectively.

A cylinder block 13 is xed or keyed to the lefthand end of the shaft `64being formed with a peripherally spaced series of paraxial cylinders, only two of which, 14 and 14d, ae shown. Such cylinders open through that end of the block 13 facing the midpoint of lthe shaft 64, and each of said cylinders is provided, at its closed end, with a port, such as those indicated at 15 and 15d.

A similar cylinder block 16 is similarly mounted adjacent the opposite end of the shaft, and is similarly formed with paraxial cylinders, only two of which, 11 and 11d, areshown: 'I'he open ends of the cylinders of the 11 series face the open ends of the cylinders of the 14 series; and the opposite ends of the cylinders of the 11 series are provided with ports such as those 'shown at 18 and 18d. l

A part annular control block 19 is suitably secured in the left-hand end of the cylinder with its radially extending port in registry with the outlet port 12, and withA its part annular groove 6|, similar to the groove 44 of the block l42 of the structure illustrated in Figs. 1 to 5.

positioned for selective registry with the ports, such as the ports 15,y and 15d, of the cylinders A similar block 82 is similarly mounted at the opposite end of the cylinder,

' with its radial port 83 in registry with the outlet port 1|, and with its part annular groove 84 arranged for selective registry with the ports, such as the ports'18 and 18d, of the cylinders of the 11 series.

a shaft journalled in said housing, a member slidably sleeved on said shaft within said housing and reciproca'ble therein, said member being formed with a continuous peripheral cam groove, means carried by said housing and held against movement axially of said housing and engaging in said cam groove to convert rotation of said member into reciprocation thereof axially of said housing, a series of peripherally-spaced, axiallyextendingV cylinders formed in said member and opening through one end thereof, a corresponding yseries of tubular pistons supported from said shaft and each having an end snugly slidably4 received in one ofI said cylinders, said' pistons being fixed relative to said shaft, each of said tubular pistons having a radially opening mouth remote from that end thereof received in a cylinder, said\ member further being formed with a second series of peripherally-spaced, axially-extending cylinders opening through the other end of said member and peripherally staggered with respect to said first-named series of cylinders, a second corresponding series of tubular pistons supported from said shaft adjacent that endof said housing remote from the support of said .first-named series of pistons, veach piston of said 'last-named series having an end snugly slidably received in shaft into reciprocation of y 8 s for rotation with a portion thereof located within said housing, a series of peripherally-spaced, axially-extending elements xedly associated with said shaft within said housing, a member in vsuch housing, slidable axially with respect to said shaft, and cooperating with allof said elements to form a series of independent, variable-volume. chambers, means for converting rotation of said said member to vary the volumes of said chambers, each of said chambers being provided with aradially-'outwardlyopening port spaced inwardly from the wall of said housing, a fluid outlet port for said housing, means providing a radially-inwardly-opening, perlpherally-extending groove bodily located upon the radius of said chamber ports and communicating with said housing fluid outlet port, whereby `each of said chambers communicates withl said' outlet port during a part of each rotation of said shaft, and communicates with the interior of said housing during the remainder of each rotation of said shaft.

one of the cylinders of said last-named series,

said last-named series of pistons being fixed relative to said shaft and each having a radially opening mouth remote from that end thereof received in a cylinder, fluid inletmeans providing communication between a source of iiuid to be pumped and both ends of said housing, and fluid outlet means opening from each end of said housing, said fluid outlet means comprising, at each end of said housing, an outlet port communicating with a radially inwardly opening, peripherally elongated groove positioned for successive registry with the mouths of the tubular pistons mounted adjacent its housing end, the peripheral extent of said groove being only slightly less than the peripheral spacing between adjacent mouths, said mouths i communicating alternately with said last-named groove and with said uid inlet means during rotation of said shaft.'

3. Pumping mechanism comprising a closed housing having a uid inlet port, a shaft mounted for rotation with a portion thereof located within said housing, a series of peripherally-spaced, axi- -ally-extending elements iixedly associated with said shaft within said housing, a member in said housing, slidable axially with respect to said shaft,

5. Pumping mechanism comprising a reservoir for duid to bepumped, a plurality of variablevolume chambers within said reservoir, each having a port, a reciprocator cooperable with all of said chambers to vary the volume thereof, an outlet common to said. chambers, and means for driving said reciprocator while producing relative movement between said chambers and Vsaid outlet to eiect and destroy 'registry between said chamber ports and said outlet successively to' cause fluid from certain of said chambers to be discharged through said outlet during a part of the cycle of volume reduction thereof, said chamber ports opening into said reservoir when outl of registry with saidoutlet, whereby fluid may be discharged therefrom to said reservoir during another part of such cycle. v

6. Pumping mechanism comprising a pumping chamber and means for varying the`volume of said chamber including a rotor having a continuous peripherall cam trackfollower means engageable wtih said cam track and cooperable therewith to convert rotation of said rotor into relative reciprocation between said rotor and said follower means, means for causing such relative reciprocation to produce opposite variations in the volume of said pumping chamber, said follower means including a. foot engageable with said cam track and carried by a piston reciprocably mounted in a cylinder upon an axis substantially radial with respect to said rotor, a fluid outlet from y said pumping chamber, conduit means connecting said fluid outlet with said cylinder to operate said piston, upon elevation of pressure in said cylinder beyond a predetermined value, to withdraw said foot from operative engagement with said cam track to render further rotation of said rotor ineffective to produce varand cooperating with all of said elements to form a series of independent, variable-volume chambers, means for converting rotation of said shaft into reciprocation of said member to vary the volumes of said chambers, each of said chambers being provided with a radially-opening port, a uid outlet port for said housing; a fluid inlet port for said housing; and means, providing a passage with which said chamber ports successively'register during rotation of said shaft, said passage communicating with said housing outlet port, and said chamber ports communicating alternatively with said inlet port.

4. Pumping mechanism comprising a closed housing having a fluid inlet port, a shaft mounted 75 iations in the volume of said pumping chamber.

7. Pumping mechanism comprising a closed housing having a fluid inlet port, a shaft mounted for rotation with a portion thereof located within said housing, a. series of peripherally-spaced, ax-

ially-extending elements fixedly associated with said shaft within said housing, a member in said housing, slidable axially with respect to said shaft, and cooperating with all of said elements to form a series of independent, variable-volume chambers, means for converting rotation of said shaft into reciprocation of said member to vary the 4volumes of said chambers, each of said chambers being provided with a radially-opening port, a fluid outlet port for said housing, and a fluid in- A piston element 85V is loosely mounted upon the shaft 64 and within the cylinder 8|. Said piston carries a series of oppositely projecting

piston rods

86, 86a, 86h, 86C, 86d, 85e, 86j, and 86g, arranged in a peripheral series and projecting oppositely from the ends of the piston 85 in the manner clearly illustrated in Fig. 6. As is there clearly shown, the left-hand ends of .the rods of the 86 series are snugly and slidably received in the cylinders of the 14 series; while the right-hand ends thereof are similarly received in the cylinders of the 11 series. The engagement of the rods in the two series of cylinders provides the rotary driving connection between the shaft 54| and the piston 85. y

Said piston 85 is externally provided with a cam groove, indicated generally by the reference numeral 48|, and preferably corresponding in contour to the cam. groove 48 of Figs. d and 5. Within a projection 81 on the housing d@ is oscillably mounted a follower element 3d having a foot 89 operatively received in the cam groove 48|; and said follower element is held in place by a threaded cap 90. A

The operation of the pump of Figs. 6 and 'l is closely similar to the operation of the pump of Figs. l to 5. As the shaft 66 is driven, the cylinder blocks 13 and 16 will be rotated, and will carry with them Vthe piston 85. Because of the engagement of the follower foot t9 in the cam groove 48|, rotation of the piston 85 will result in reciprocation thereof. As the piston d5 moves from the position illustrated in Fig. 6 toward the left, fluid in the cylinder 'ldd will be driven out through the groove 8| and radial port d@ of the block 19 and through the outlet port i2, with which is associated a suitable check valve mechanism permitting fluid to ow outwardly therethrough but preventing inward iiow' of fluid therethrough. As the cylinder block 13 rotates in a clockwise direction, as viewed from the right, the port 15d will ultimately move out of registry with the groove 8|, and almost simultaneously the corresponding port 15e of the next cylinder 14e in the series (not shown) will move into registry with the groove 8i, so that continued movement of the piston 85 toward the left will drive fluid from the cylinder 1de through the outlet port 12.

Meantime, movement of the piston 85 toward the left' will be withdrawing the rods of the @d series from the cylinders of the 11 series, to draw fluid from the interior of the cylindrical chamber' 6| into those cylinders of the l1 series whose ports, corresponding to the ports 1d, are open to the interior of the cylindrical chamber 6|, thus filling the cylinders of the 11 series, withdrawing a mess of .fluid from the interior of the cylindrical chamber 5|, and causing fluid to iiow into the chamber 58 and cylindrical cham- -ber 5| through the inlet port 10.

Obviously, one complete throw of the piston 85 from its illustrated position to the opposite end of its `path will empty the cylinders of the 14 series and fill thexcylinders of the 11 series; while a return reciprocation of piston 85 will empty the cylinders of the 11 series and iill the cylinders of the 14 series. l

In Fig. 8, I have shown an automatic control mechanism which may be fused with any one of the assemblies above described.' In place ofthe housing projection 53. of Fig. ,1, for instance,

body 25| having a foot 252 shaped to engage operatively in the cam groove of any one of the cam rotors of the. assemblies above described. The housing projection 53 is further formed to provide a cylinder 253 separated from the chamber 250 by a substantially fluid-tight partition 254 in which is guided a stem 255 connecting the follower body-25| with a piston 255 reciprocably and oscillably mounted Ain the cylinder 255. Communicating with opposite ends of the cylinder 253 are

ports

251 and 258 which are suitably connected through suitable valve mechanism'to the pressure existing in the portion of the cylinl a source of fluid under pressure. It will. be obvious that, if the valve mechanism is so actuated as to supply to the portion of the cylinder 253 below the piston 255 a pressure higher than der above the piston 25H5, the piston 256 will be elevated to lift the follower 25|, thus disengaging the foot 252 from its cam groove. Such disengagement of the follower foot 252 from the cam groovewill, of course, render further rotation of `the cam rotor inoperative to produce re# ciprocation thereof; and will thus interrupt operation of the pumping mechanism.

It will be clear that, if desired, the passages 525i and 25d may be so associated with the pressure tank or other point of use supplied by the pumping mechanism, that pumping operation of the pumping mechanism will be automatically interrupted'whenever the pressure at such point of use exceeds a predetermined value, and will be automatically reinitiated whenever the pressure at said point drops below a predetermined value. Alternatively, there may be a .direct connection between the

passages

251 and 253 and the pumping cylinder, so that excessive pressure existing in the cylinder will shift the follower I claim as my invention:

l. Pumping mechanism comprising a housing, a shaftl journalled in said housing, a member slidably sleeved on said shaft within said housing and reciprocable therein, said member being formed with a continuous peripheral cam groove, means carried by said housing and held against Vmovement axially of said housing and engaging in said cam groove to convert rotation of said member into reciprocation thereof axially of said housing, a series of peripherally spaced,vaxially extending cylinders formed in said member and opening through one end thereof, a corresponding series of tubular pistons supported from Said .shaft and each having an end snugly slidably received in one of said cylinders, said pistons being nxed relative to said shaft, each of said tubular pistons having a radially opening mouth remote from that end thereof received in a cylinder, said member further being'formed with a second series of peripherally-spaced, axiallyextending cylinders. opening through the other end of said member and peripherally staggered with respect to said rst-named series of cylin-` ders, a second corresponding series of tubular pistons supported from said shaft adjacent that end of said housing remote from the support of said rst-named series 4of pistons, each piston of said last-named series having an end snugly slidably received in one of the cylinders of said the housing may be formed with a projection last-named series, said last-named series Vof pistons being fixed relative to said shaft` and each having a radially opening mouth remote from `that end thereof received in'a cylinder, 'fluid inlet means providing communication between a source `oi duid to be pumped and both ends of let port for said housing, a passage communicating with said housing outlet port, said chamber ports alternatively communicating, during rotation of said shaft, with said passage and said inlet port.

8. Pumping mechanism comprising a closed housing having a uidinlet port, a shaft mounted for rotation with a portion thereof located `within said housing, a member in said housing pro- 1 viding a series of peripherally-spaced, axially-ex-v tending cylinders, a member in said housing provided with a corresponding series of peripherallyspaced, axially-extending plunger elements, each snugly slidably received in one of said cylinders, each of said cylinders and its plungencooperating to define' a variable-volume chamber, one of said members being xedly associated with said shaft, and the other of said members being rotatable with but slidable axially with respect to said shaft, means for converting rotation of said shaft into reciprocation of said slidable member to vary the Volumes of said chamber, each of said chambers being provided with a. radiallyopening port, a fluid outlet port for said housing, and means providing a passage communicating with said housing outlet, said ports of said chambers registering successively with said passage as said shaft is rotated, and opening into said housing between periods of registry with said passage.

l0 9. Pumping mechanism comprising a closed housing having a iiuid inlet port, a shaft mounted for rotation with a portion thereof located within said housing, a member in said housing providing 'a series of peripheraliy-spaced, axially-extending chambers, a member in said housing provided with a corresponding series of peripherallyspaced, axially-extending plunger elements. each snugly slidably received in one of said cylinders, one of said members being fixedly associated with said shaft and the other of said members being rotatable with but slidable axially with respect to said shaft, means for converting rotation of said shaft into reciprocation of said slidable member to vary lthe volumes o1' said chambers. each of said chambers being provided with a radially-outwardly-opening port spaced inwardly from the wall of said housing, a fluid outlet port for said housing, and means providing a radiallyinwardly-opening', peripherally extending groove bodily located upon the radiusof said chambers and communicating with said housing uid outlet port, whereby each of said chambers communicates with said outlet port during a part of each rotation of said shaft, and communicates with the interior of said housing during the remainder of each rotation of said shaft.