US1997370A

US1997370A - Fluid pump

Info

Publication number: US1997370A
Application number: US621971A
Authority: US
Inventors: Vesconte Harold J Le
Original assignee: Union Special Machine Co
Current assignee: Union Special Machine Co
Priority date: 1932-07-11
Filing date: 1932-07-11
Publication date: 1935-04-09
Anticipated expiration: 1952-04-09

Description

April 9, 1935. H.' Ji LE vr-:scoN'rE FLUID PUMP Filed July 11', 1932 2 SheetsfSheet l April 9, 1935 H. J. LE vvEscoN-n 1,997,370

FLUID PUMP Filed July 11, 1932 2 Sheets-Sheet 2 97 r cgtg 9 y J' NW" l 25m l (9\A w i Patented Apr. 9, 1.935 l UNITED STATESy PATENT OFFICE FLUID PUIVIP Harold J. Le Vesconte, Chicago, Ill., assgnor to Union Special Machine Company, Chicago, Ill., a corporation of Illinois Application July 11, 1932, Serial No. 621,971

111 Claims. (Cl. 103-126) The invention relates to new and useful imfluid pump includes a central casing member I provements in fluid pumps, and more particwhich has a projecting bracket portion 2 formed ularly to a fluid pump having interengaging imwith bolt holes 3 through which bolts may be pellers. placed for securing the pump casing rigidly to a 5 -An object of the invention is to provide a fluid supporting means. Within the central member 5 pump of the above type with means for interof the pump casing is a chamber 4. the end Walls mittently rotating the impellers. f 5 and 6 of which are circular and curved about A further object of the invention is to procenters 'I and 8, respectively. The bottom and vide a pump of the above type wherein the extop Walls of this chamber may be of any suitable tent of intermittent movement imparted to the shape. Located within this chamber are interlo impellers may be varied for varying the transmeshing impellers 9 and I0. The impellers are mitting capacity of the pump without varying similarly constructed. Each impeller has a centhe speed of the prime mover therefor. tral opening II therethrough and is provided with In the drawingsintermeshing projections I2 operating as pistons.

l5 Figure 1 is a iront view of a pump embodying The projections have the ends thereof curved 15 the improvements and showing in particular the to conform to the curvature of the end walls 5 operating mechanism therefor; and 6 as indicated at I3. When the impellers are Fig. -2- is a sectional view on the line 2 2 of placed and intermeshed, the driving impeller I0 Fig. l; contacts with the end wall B and the driven im- Fig. 3 is a vertical sectional view through the P61181' 9 Contacts With the end Wall 5- 20 pump at right angles to the axis of rotation of Located within the driving impeller is a shaft the impellers; I4 carrying a block I5 which has flat sides indi- Fig. 4 is a sectional view on the line 4 4 of cated at I6 forming the sides of an equilateral Fig-1; triangle. The corners of the triangle are cut Fig. 5 is a sectional view on the line 5 5 of away `forming curved faces I1. These curved 25 Fig- 1; faces conform to the inner curved surface of the, Fig. 6 is a perspective view of one of the imimpeller annulus. The shaft I4 extends through DEHEIS; the impeller I Il and is mounted for rotation in Fig. 7 is a perspective view of one of the bearings in the pump casing. The pump casing clutch members for intermittently rotating the not only includes a central Casing member l, but 30 y impellers; and side casing members I8 and I9. These side cas--l Fig. 8 is an enlarged View partly in side eleing members contact with the central casing vation and partly in section showing one of the member and are secured together by a bolt 20. l

impellers and its associated operating clutch. The Side Casing members are DIOVided With The invention is directed to a fluid pump for bosses in the region of the bearings for the shaft 35 transmitting fluids and includes a casing prosupporting the clutch member. Between the vided with a chamber, in which casing is loblock I5 and the inner surface of the impeller -cated for rotation impellers which are interare clutch rollers 2|. There is one clutch roller meshed and which divide the chamber so as to for each fiat side of the block. The flat side provide intake and discharge sections. Each of the block has a groove 22 formed therein and 40 impeller is in the form of an annulus. lLocated attached to the block and lying in the groove within each impeller is a clutch member. One beneath the roller 2| is a spring 23. This spring of the impellers is a driving impeller, and the iS so shaped as to normally hold the roller pressed clutch member 'therefor is intermittently operagainst the inner face of the impeller.

ated for rotating the impellers. The other im- On the end of the shaft I4 is an arm 24 pro- 45 peller is a driven impeller and the clutch memvided with a slot 25. Adjustable in the slot 25 ber therein is for the purpose of preventing retis a stud 26 to which a link 21 is attached. This rcgrade movement of the impellers. The clutch link is pivoted at 28 to a rock lever 29 which in member is intermittently oscillated and imparts turn is pivotally mounted at 30. An eccentric a continuous intermittent forward movement to strap 3| is pivoted at 32 to a rock lever and co- 50 the impellers. Means is provided whereby the operates with the eccentric 33 on the shaft 34 throw of the clutch may be varied so as to vary which is the prime mover for operating the pump. the length of the intermittent movement given As this shaft rotates, it will, through the train 01 to the impellers. Y mechanism described, oscillate the shaft I4.

Referring more in detail to the drawings, the When the shaft I4 is moved in a clockwise direc- 55 mittent movement given to the impellers.

tion, the roller will be caused to grip the impeller i and will impart rotating movements thereto to an extent depending upon the extent of oscillation of the arm 24. When the arm is oscillated in the opposite direction, the clutch is released from the impeller which remains stationary while the clutch is returned for a new gripping hold on the impeller i0. There is a similar clutch 35 with rollers and springs located within the impeller 9. The shaft 36 carrying this clutch is xed to the end vmembers of the casing by nuts 31 and 38 which serve the-double function of pre. venting the shaft from rotating, and tightly joining the end sections of the casing to the central section thereof From the above it will be apparent that the impellers are mounted for intermittent rotation in the casing and have a bearing contact with the curved faces of thecasing. They also have a bearing contact with thelblocks of the clutch members and at one time the driving impeller moves with the .clutch block -while at another time it rotates on the clutch block. The driven impeller rotates on the xed clutch block associated therewith which is stationary fand which prevents the impeller from any retrograde movement. This provides a means whereby the impellers are intermittently rotated in aA forward direction. By adjusting the stud 26 the extent vof movement of the clutch block drivingthe pump canbe vvaried and this will vary the inter- The side members of the casing are provided with openings therethrough which are in alinement. A cap nut 40 may be threaded into one of these openings for closing the same, and a pipe #Si attached to the other by a suitable coupling. This pipe may serve as an intake pipe for the pump, in which case the uid will be drawn into the pump at the lower section of the casing which is divided by the impellers into an intake section and a discharge section. The side members of the casing lare also provided with openings, one of which may be closed by cap nut 42 and the pipe 43 attached to the other by a suitable coupling which willserve as a discharge pipe for the discharge side of the pump. These cap nuts 42 are interchanged with the pipes and the upper pipe may be made an intake pipe and the lower one a discharge pipe if the pump is rotated in the opposite direction. The two shafts on which the clutch devices a'nd gears are supported may be turned end for end in the casing, and this will reverse the direction of rotation of' the impellers. The operating elements of the pump can be shifted, making the other impeller a driving impeller, or so as to place the operating arm on the other side of the pump. -This greatly facilitates the installing of the pump with minor changes in the machine with which it is associated. The

pump is simple in construction, consisting of few parts, and even when operated at highl speeds the parts are subject to little wear.

The pump is especially adapted for the supplying of oil to a high speed machine such as a sewing machine wherein the prime moving shaft may be rotating from 4,000 to 5,000 R. P. M.. One of the problems in a high speed'machine is to reduce the supply of'a pump 'to the requirements of the machine. The pump which has just been described Amay be driven at high speed and the amount of oil delivered reduced to a very small amount, due to the fact that for each rotation of the prime mover a very small movement may be given to the impellers. Furthermore, the exequally as well for other purposes where the amount of fluid transmitted is relatively small and theconditions are such that the prime mover operating the pump is a high speed part.

it is obvious that other forms of intermittently rotating impellers may be used than those described in detail and that the clutches may be otherwise placed relative to the impellers and the casing, andfminor changes made in the details of construction without departing from the spirit of the invention as set forth in the appended claims.

Y Having thus described the invention, what ilv claim las new and desire to secure by Letters Patent, is-

1. A fluid pump comprising a casing having a pump chamber therein, a rotatable impeller and means cooperating the ewith for dividing said chamber into intake and discharge sections, an operating shaft extending through said impeller, clutch meanslocated within the pump chamber for intermittently operating said impeller from said shaft for transmitting fluid from the intake to the discharge side of the chamber,said clutch means andshaft constituting the sole means for.

rotating said impe1ler,'a.nd means for restraining the impeller from retrograde movement whereby the impeller is driven when said shaft is rotated in one direction and is stationary when said shaft is rotated in the other direction. V 1

2. A iiuid pump comprising a casing having a pump chamber therein, a rotatable impeller and means cooperating therewith for dividing said chamber into intake and discharge sections, an' Aoperating shaft extending through said impeller,

3. A uid pump comprising a. casing having aI pump chamber therein, a rotatable impeller and means cooperating therewith for dividing said chamber into intake and discharge sections, anI operating shaft extending through said impeller; means located within the pump chamber for intermittently operating said impeller from said shaft for transmitting uid from the intake to the discharge side of the chamber, and devices operating upon said cooperating means for restraining the impeller from retrograde movement.

4. A fluid pump comprising a casing, a pump chamber therein, intermeshing rotatable impellers located within said pump chamber and dividing said chamber into intake and discharge sections, an operating shaft extending through one of said impellers, clutch means'located within the pump chamber for intermittently rotating said impellersfrom said operating shaft for transmitting fluid from the intake to the discharge side of said chamber, said clutch means and shaft constituting the sole means for rotating the impellers, and means for restraining the impellers from retrograde movement whereby theimpellers are driven when said shaft is rotated in one direction and are stationary when said shaft is rotated in the other direction.

5. A uid pump comprising a casing, a pump chamber therein. intermeshing rotatable impellers located within said pump chamber and dividing said chamber into intake and discharge sections, an operating shaft extending through one of said impellers, means located within the pump chamber for intermittently rotating said impellers from said operating shaft for transmitting fluid yfrom the intake to the discharge side of said chamber, a stationary shaft extending through the other of said impellers, and means within the pump chamber disposed between said stationary shaft and the impeller associated therewith for restraining said impellers from retrograde movement.

6. A fluid pump comprising a casing having a pump chamber therein, rotatable intermeshing impellers located in said pump chamber and dividing said chamber into intake and dischargev sections, an operating shaft extending'through the casing and one of said impellers, clutch means located within the impeller associated with the operating shaft for intermittently rotating said 'impellers from said shaft, said clutch means and shaft constituting the sole means for rotating the impellers, and means for restraining the impellers from retrograde movement whereby theimpellers are driven when said shaft is rotated in one direction and are stationary when said shaft is rotated in the other direction.

7. A fluid pump comprising a casing having a pump chamber therein, rotatable intermeshing impellers located in said pump chamber and dividing said chamber into intake and discharge sections, an operating shaft extending through the casing and one of said impellers, means located within the impeller associated with the operating shaftfor intermittently rotating said impellers from said shaft, a stationary shaft extending through the other impeller, and means located within said last-named impeller and cooperating with said stationary shaft for restraining the impellers from retrograde movement.

8. IA uid pump comprising a casing,` a chamber therein, ,intermeshing annular impellers contacting with the end wallsof the casing and dividing said chamber into intake and discharge sections, a clutch located within one of said impellers for intermittently rotating the same, and

cooperating therewith for preventing retrograde movement of said impeller.

9. A fluid pump comprising a casing having a central section and side sections secured thereto and forming a chamber, a shaft mounted in said side sections, an impeller mounted on said shaft and having the ends of the shaft shaped to conform to and contact with the end wall of the casing, a second impeller meshing with the firstnarned impeller and having its shaft contacting a clutch `located within the other impeller and with the opposite end wall of the casing, a shaft on which said second impeller is mounted, means for securing said last-named shaft in a fixed position, a clutch carried by said shaft and cooperating with the impeller mounted thereon for preventing retrograde movement therein, a clutch carried by the first-named shaft and cooperating with the impeller thereon for intermittently rotating the same, and means for oscillating said first-named shaft.

10. A fluid pump comprising a casing having a. chamber therein formed with curved end walls, intermeshing annular impellers located in said chamber and contacting with the respective end walls. a shaft extending through one of said impellers and xed to said casing, a clutch located within said impeller and cooperating with said shaft for preventing retrograde movement of the impcller, a second shaft mounted for oscillation in said casing and extending through the other impeller, a clutch located within said last-named impeller and cooperating withsaid shaft for intermittently rotating said impellers, an arm carried by said last-named shaft, and means connected to said arm for oscillating the shaft.

11. A fluid pump comprising a casing having a chamber therein formed with curvedend walls, intermeshing annular impellersk located in said chamber and contacting with the respective end walls, a shaft extending through one of said impellers and fixed to said casing, a clutch located withinsaid impeller and cooperating with said shaft for preventing retrograde movement of the impeller, a second shaft mounted for oscillation in said casing and extending through the other impeller, a clutch located within said lastnamed impeller and cooperating with said 'shaft for intermittently rotating said impellers, an arm carried by said last-named shaft, means connected to said arm for oscillating the shaft, and means whereby the extent of movement imparted to said arm may be varied.

HAROLD J. LE VESCONTE.