US2562757A - Lubricating pump - Google Patents

Description

July 31, 1951 H. WINTHER 2,562,757

LUBRICATING PUMP Original Filed July 11, 1947 2 Sheets-Sheet l awe/M300. f/awdrd h/Ih f rer WWW;

FIG. /0

July 31, 1951 H. WINTHER LUBRICATING PUMP 2 Sheets-Sheet 2 Original Filed July 11, 1947 Patented July 31, 1951 UNI vJS'TAT tensions-me *PU P Howard whither, Harrington Park, N. J., assignor to Nathan .Manufaeturing Company, New York,

'N.TY., acorporation of New York I Original application 'J-ulyll, 1947, Serial no.

7.60,'188.- lDivided and this applicationiJulyZZll, I 1948, Serial.No.39.630

Thisinvention which Ia divisionof application Serial No. 760,188 filed by me on July .11, 1941, now Patent No. 2,455,847, relates to pumps adapted to deliver oil to devices-for lubricating the flanges of wheels 'of vehicles'running on tracks, such as locomotives, railroad cars, etc, where the wheels are mounted on trucks or vframes which move relatively to the main 'bodyof the vehicle which they support or .for lubricating various points on a vehicle, not running .on tracks, where relative movements are present between its body andits frame or support.

It is the principal object of this invention to provide in a pump of this type, means to deliver only a small quantity of oil "to these lubricating devices while the vehicle is running on a straight track or making a straight run and to'increase this quantity of oil while rounding a curve when more lubricant is needed.

Another obj ectis to provide a pump which can deliver quantities of oil to a plurality of lubrieating devices so that a single pump can take care of the lubricant requirements of fan ientirevehicle.

'A further object is to .make use of the movements of diiierent points "on thevehicle relative to each other to operate the pump, as well as antomatically adjust the amount .of oil discharged, so as to provide a self-conta'ined'a'nd automatic lubricating system for the purpose specified.

Other objects will become apparent after a perusal of the following specification and an inspection of the accompanying drawings in which a preferred embodiment of the invention is disclosed. I

Inthe drawings, I a Fig. 'l'is a planvie'w of a fragmentary Tpart of a vehicle with its frame while running on a straight track;

Fig. 2 I is a fragmentary 'elevational view "of the same; g

Fig.3 is a plan viewof the same while rounding a curve; I

Fig. .4 is afragmentary elevational view .of the same;

Fig. is a sectional view of the lubricatingpump I Fig. 1.0 is a fragmentary perspective view; of :a cam controlling the stroke of thepiston; I

I Fig. .11 is adetail plan view of the distributing valve and bushing-of the pump; and I Figs. 12, 13, 14. and are sectional views along, respectively, planes oflines i2l2, iii-l3, l4-l4, and -l5l5 in-Fig. 11 showing different relative positions between valve and bushing.

Fig. .16 a cross section through the cylinder, piston and part-of thehousing, showing the port arrangement in the cylinder.

'Fig. 17 is a partial elevation of the piston, partly in sectiomshowing thejportsin the piston.

Like characters -of reference denote similar parts throughout the several views and the following specification.

20 is a vehicle having a body 2| mounted movably upon a frame 22 within which are supported axles of wheels 23, preferably, within spring supported journal boxes, in the manner well known the art. The wheels are provided with flanges 24 andirideupon a pair of tracks 25. Attention is drawn to the fact that the vehicle bodyis mova- I :blefin relation to its frame, andthatthe wheels and their axles, are 'movable with respect :frame.

Referring tolFig. 5, 26 is a pump housing into whichfis'zfit'ted a cylinder 21 provided with a discharge .duct' z'd'and an outer annular groove 29 which connects with an inlet duct 30 and inlet -3l in the housing-as shown in'Fig. 7 and Fig. '16. The groove 29 also connects with the inner wall of the cylinder by way of a duct 30a (Fig. '16).

A piston 32 is fitted to cylinder 21 and is provided with aport 33 consisting of an axial section opening to the bottom of the piston,- a transverse section and a longitudinal section, the latter'being a groove in the pistons cylindrical 'surfacaall as shown inFigs. l6 and 17. As the piston oscillates on its axis during its reciprocation, the port'33 communicates alternately with'inlet duct 3ila to admit fluid to chamber 34 beneath the piston (on theup stroke) and'with duct28 to discharge the 'fluid on the down stroke.

Areciprocatin'g an'd oscillatingmovement is imparted to piston 32 by means of a ball pin 35 eccentricallly disposed on an end of. a ratchet shaft 36 andmoving inside a slot of'a crosshead 3'! of piston '32. A stop member 38 limits the travel of the piston 32 by contact between its'bottom surface 39 and the top 10 of an extension 4| to thepiston '32 when the piston is in its top position. .A spring 42 .acting on the crosshead 31 .mairitains contact between the piston 3'2 and the to the ball pin 35 at a point 43 during its upward or vibrating or oscillating part of the frame to which the lubricator is attached, such as the journal boxes of the wheel axles. A preferred method of a connection is disclosed in Patent No.

2,359,905 of October 10, 1944.

The fluid discharged into the duct 28 by the motion of the piston 32 passes through a duct 46 in the housing and flows to an opening 41 in amount of lubricant to the wearing parts not only when the vehicle is entering the curve but during the entire traversal of the curve. The

' method of obtaining the increased volume is explained with reference to Fig. 1, showing a plan (view of'the frame 22 r'ot'atably attached to the "body 2! of 'a railway vehicle, and'Fig. 2, showing a side elevation of the same.

a cylindrical valve bushing 48. .A rotary valve l flange-oile'rs.

49 within the bushing 48 has an annular groove 50 which maintains contact with opening 41 during the entire revolution of valve 49. A 'ra' dial channel 5i through the valve 49 transmits the fluid from thegroove 50 to an axial chamber 52 in the valve.

Referring to Figs. 12, 13, 14 and l5, 'por'ts'53, 54, 55 and 56 in valve 49 serve to distribute the fluid from the chamber 52 consecutively to port 51, 58, 59 and 60 in bushing 48 which communicate, respectively, with pump outlets 6|, 62, 63 and 64. I

In Fig. 7, teeth of a gear 65 on the ratchet shaft 36 engageteeth-of a gear 66 which rotates a shaft 61 and a worm 68. Worm 68 rotates a gear 69 attached to valve 49.

The relation of revolutions of ratchet shaft 36 to those of valve 49 is such that, when the number of ports 53, 54, 55 and 56 is represented by n, the valve 49 will rotate l n i I I revolution for each revolution of'thev ratche shaft 36.

Thetrain of gears 66, 68 and 69 is positioned so that one of the valve ports, such as 53 will be in communication with a bushing port such as l 51 during the downward or-discharge stroke of the piston 32. Each revolution of the ratchet shaft 36 moves a consecutive valve. port into communication with the bushing port located in its radial plane. The different positions of valve ports with respect to bushing ports are shown in Figs. 12, 13, 14 and 15. With the valve 49 as shown in these figures, the external discharges take place during the consecutive registering between ports 53 and 51, ports Hand 58, ports and 59, and ports 56 and 60. The cycle is repeated as long as the ratchet shaft continues to rotate. I I I I I I The volume of fluid discharged by the piston 32 is controlled by the position of the stop member 38. The stop member in its normal 'or lowest position allows the piston 32 to .travel a fixed minimum stroke. An increase in stroke'is caused by the upward movement of stop member 38 when a cam I0 is rotated in either direction. A

26 and-the anchoring lug 1:9.

The frame 22 has attached to its apparatus .forapplying lubricant to the wheel flanges 24, including a lubricant reservoir I6, the pump 26 and flange oile'rs 11, such as disclosed, for example, iii-Patent No. 2,380,743, issued July 17, 1945,

to Bengt E. Folke et al., and suitable pipes I8 for conducting the fluid from the reservoir to the lubricator and from the lubricator to the H An anchoring lug I6 is fixed to the body 2| of th'evehicle. A rod 80, provided with limited universal motion at each end, serves to connect lever 'T4"to anchoring-lug l9. The length of the rod is adjusted'so that when the vehicle is standing ona'straight track the lever 14 and arm 15 are verticalfcam 10 is'horizontal and stop member 38*is f irrits lowest position, thus regulating the lfubricator'to its minimum discharge.

When-the*vehicle'enters a curve, as illustrated in Fi'gs53 and 4, the frame 22 is displaced rotationallywith respect to the body 2|. This displacement alters the distance between the pump The rod 80 bein of fixed length, lever 14 and arm move to compensate for the change in distance between the parts they connect.

f This movement causes'cam 10 to rotate, raising the stop member 38, thereby increasing the stroke of piston 32 and automatically increasing the discharge of lubricant.

I Upon the return of the vehicle to a straight 'tracl ;;the partS revert to the position shown in Figs. 1; 2 and'8, readiusting the lubricant delivery to the normal requirements.

' While I haverefer'red to'the system as adapted to lubricate wh'e el flanges, it is obvious, of course,

i that'thesystem' could be employed equally as well for the'lubrication of other points of a vehicljand' the term used 1. e. wheel flanges. shouldnot be interpreted as restrictive in any sense. 'As' statedbefore the system is equally as applicable 'to vehiclesnot running on tracks but in which relative movements between different points of vehicle body and its support can b'eobta'ined.

Moreover, while I have shown an oil reservoir .separatefrom the pump, it can be madepart of the pump housing, or an independent supply pump may be used to furnish oil to the pump of the system in which. case the piston serves as a distributing means for the oil to the rotary distributor.

Many other changes and minor details of construction may be resorted to without departing from'the principles or sacrificing any of the adthe cylinder 'with' the pump inlet during its suction strokeandwith the cylinder outlet durin its forcing stroke, a rotary distributor interposed between the cylinder and the pump outlets having a duct in constant communication with the cylinder outlet and having a plurality of outlets so disposed that only one will be in register with one of the pump outlets at one time, and gearing between the shaft and the distributor adapted to bring one of the distributor outlets in register with one of the pump outlets to discharge oil from the cylinder through one of the pump outlets in timer relation with the reciprocation of the piston.

2. An oil pump as defined in claim 1, having means to adjust the reciprocatory stroke of the piston.

3. An oil pump as defined in claim 1, the gearing to rotate the distributor at a relation of 1 divided by the number of distributor outlets, 1 being a cycle of reciprocation of the piston.

HOWARD WINTHER.

6 REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 777,413 Haynes Dec. 13, 1904 844,360 Huff Feb. 19, 1907 1,960,703 Hess May 29, 1934 2,157,970 Rowland May 9, 1939 2,210,067 Cummins Aug. 6, 1940 2,353,188 Roosa July 11, 1944 2,359,905 Folke Oct. 10, 1944 2,380,743 Folke et a1. July 17, 1945 2,406,599 Folke Aug. 27, 1946 2,455,847 Winther Dec. 7, 1948

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