US903897A - Lubricator. - Google Patents

Description

Patented Nov. 17'; 1908. 2 SHEETS-SHEET 1.

:g1/wem oz Stichtag E. A. SBDGWIGK.

v LUBRIGATOR. 'APPLICATION FILED NOV. 23, 1907.

5235i im zonas H. A. SEDGWICK.

LUBRICATOR.

APPLICATION FILED Nov. 23, 1907.

Patented Nov. 17, 1908.

2 SHEETS-SHEET 2.

lllllll e vwenl'oz fukin,

'HARRY ABBEY sEDGw'IoK,

OF MADISON,v WISCONSIN, ASSIGNOR 'ILO MADISON-KIPP LUBRI- CATOR COMPANY, A CORPORATION. A

I LUBRIoA'ror..

Speocation of Letters Patent.

Patented Nov. 17, 1908.

Application led November 23, 1907. Serial No. 403,557.

`Madison, in the county of Dane and State of Wisconsin, have invented certain new and useful .Improvements in Lubricators, of

which the following is a specification, reference being had therein to the accompanying drawing.`

This invention relates to a force-feed lubricator and has for its obj ect to simplify the construction thereof and to produce a mechanism, the parts of which are few in number and easily machined and assembled.

It has for its especial object the provision of a sight-feed with the smallest possible number of additional parts.

These and other objects of the invention and the advantages thereof will be hereinafter fully set forth.

In the accompanying drawings, Figure 1 is a perspective view of a 'lubricator as a Whole. Fig. 2 is a view in vertical crosssection of the lubricator taken through Vthe aXis of the piston. Fig. 3is a view in vertical cross-section taken through the axis of the piston in a plane at right-angles to that of Fig. 2. Figs. 4 and 5 are fragmentary vhorizontal cross-sections in the plane of the upper pair ofports, showing the piston in two different positions. Fig. 6 is a view of a modified form of piston. Figs. 7 and 8 are vertical and horizontal cross-sectional views,

respectively, of a multiple lubricator ern? bodying my invention. Fig. 9 is a fragmentary horizontal cross-section in the plane of the upper Apair of ports, showing theimodified form of piston of Fig. 6.

The mechanism embodying my invention may be mounted within an oil tank or casing 2., which is generally rectangular in shape and may be an iron casting as here shown..

A portion of the top 3 is bolted or otherwise secured to the casing in order that it may be removed to refill the oil reservoir. Mounted in the oiltight bushings 4 4 in the walls of the casing is the shaft 5 which carries'the worm 6. Mounted in bearings 7-7 carried vby the other two walls of the casing is the shaft 8 at right angles to and some-distance aboverthe shaft 5. To this shaft is rigidly secured the worm wheel 9, engaging with the worm 6.

It will be understood that the plunger actuating shaft 8 may be driven by any other suitable means, as by a ratchet secured to -a projecting end of shaft 8 driven by any convenient reciprocating part of the engine'. In the worm and wheel drive mechanism shown, the shaft 5 is driven by suitable gearing from some rotating part of the engine. The cam element 10 is rigidly mounted uponthe shaft 8 by means of the setscrew 11. cam surface 12 and the projecting arm 13. The pump plunger or piston 14 is pivotally connected to themember 15 which serves as an eccentric strap and is also provided with a lateral or spiral cam surface 16, which engages with the arm 13. The upper cylindrical end 41 of the Amember 15 is held in position axially by the bushing 17 seated in the top of the casing. As the shaft 8 rotates, the piston is reciprocated longitudi* nally by the engagement of the projecting part of the cam' 12 alternately with the upper and lower inner faces 18 and 19, respectively, of thc member 15. The piston is likewise oscillated through a small angle by the engagement of the arm 13 with the cam surface 16. The piston operates within It is provided with the eccentricthe cylinder 20 formed by drilling a vertical hole in the casting 21. This casting is provided with the intakes 22 and 23 and the discharge openings 24 and 25. From the discharge opening 24, the duct 26 leads upwardly through the top of the lubricator casing to the sight-feed mechanism 27. The duct 28 leads from the sight-feed mechanism back to the intake 23. The duct 29 leads to the bottom of the oil tank where it has a free opening communicating with the body of oil in the reservoir. Piping leads from the discharge opening 25 tothe engine parts desired to be lubricated.

The cylinder 20 has two chambers 30 and 31 of diderent bore, the diameter of the upper' chamber being the larger. The ports of the upper cylinder 32 and 33 communicate with the intake and discharge openings 22 and 2 4, respectively. The ports 34 and 3 5 communicate with the intake and discharge openings 23 and 25, respectively. The piston is of one -diameter in its upperportion and of another and smaller diameter in its lower portion. These two parts of the piston correspond with the two diameters of the cylinder and fit snugly therein. Each part and 37 commencine at the lower end of its working face and 'extending upwardly short of the other end thereof by a distance at least equal to the' maXimum strokeof the piston. The grooves 36'register with the ports 32 and 34 at one point 1n the cycle of movements of the plunger, and thereafter the grooves 37 register with the ports 33 and 35 at a time when the grooves 36 are out of registry with their'correspondlng ports. y

The mechanism, as a whole, is so constructed and the cam surface so designed that while the intake ports and their corresponding grooves are in registry, the piston is raised vertically to its upper limit. During this operation the oil flows from .the reservoir and the sight-feed chamber lnto the space inclosed-between the shoulder 38 of the piston and the shoulder 39 of the cylinder, on the one hand, and into the space between the lower ends of the plunger and cylinder, on the other. The plunger 1s then rotated until the discharge ports and their corresponding grooves are in registry, whereupon it is moved downwardly discharglng the oil present in the lower portion of each of the two parts of the cylinder. One portion of oil will be sent to the sight-feed device and the other portion will be pumped to the arts of the engine to be lubricated.

In Figs. 6 and 9, I have shown a piston provided with but one groove. When this construction is used the oscillation must obviously be designed to extend over the angle between the intake and discharge ports.

I have provided a means for varymg the length of the stroke of the plunger. The cylindrical extension 41 of the member 15 has threaded engagement-with the sleeve 40. The piece 42, consisting of two pins 45 and 46, and the connecting yoke 47, is free to move vertically in the sockets 4 8 and 49 formed inthe member 15. The under side of the yoke 47 engages with the eccentric cam to give the piston the reciprocatory motion described above. movement of this piece can be fixed in any suitable manner as by the enlargement 50 on the upper end of the pin 45. By adjusting the position lof the sleeve40 upon part 4l, the upper limit of movement of the piece 42 Yis correspondingly varied' and the distance between the upper `and lower strap faces 18 and 19 is increased or decreased. In this manner the lost motion in the engagement of The limit of downward to prevent the creation of stresses in the cylinder sta-if. To obviate the necessity for such accurate machining and rigid connection of the bearing and cylinder, the pivotal connection 51, Figs. 2 and 3, is employed.

It will be understood that the feature of a double tandem piston and cylinder can be used, where the piston is of the rotary type, as well as of the oscillatory.,I Or it can be used where the piston neither oscillates or rotates but has only a motion of reciprocation. The single groove can be used on a piston designed to rotate as well as on one designed to oscillate. Attention is likewise icalled to the fact that the arrangement of -80 engaging cam members on the drive-shaft and piston extension can be varied without departing fromA the spirit of my invention. Asshown the two diameters of cylinder and piston are so proportioned that the displacement of the one part of the piston pumping to the sight-feed device is less than the displacement of the lower part, pumping to the engine bearings. .That is, the difference in the area of the two circles is less than the area of the smaller circle. This is readily observed to be necessary to avoid completely filling the ducts 26 and 28 and the sightfeed mechanism with oil under high pressure as' would otherwise be the case. It is desirable to use these lubricator pumps in batteries of three four or more, each pump supplying oil to separate parts of the engine mechanism. A series of cams 10 on the shaft 8 and yokes 15, attached to the piston 100 may be used to drive the several pump mechanisms. But to economize room, enable the use of one small casting for all of the cylinders, and avoid duplication of the cam structures, I have devised the following multiple 105 arrangement and construction, illustrated in Figs. 7 and 8. j y

-52 is the single casting which is drilled to provide a series of siX cylinders, and ducts reservoir, the sight-,feeds and the engine bearings. I have shown six such cylinders with corresponding pistons. The two outside pistons, 141' and 14b are providedwith vcam yokes, 15a and 15b. The channel-shaped 115 cross head engages theshoulders 54 of the outside pistons being slotted at each end for that purpose. The intermediate pistons terminate just under the cross head. In the depending iange 56 of this cross- 120 head is drilled a series of holes 56', one for each piston. corresponding series of slots 57 are cut-in the other flange 57 of the cross-head. Pins 58, are screwed into tapped holes 59 inthe pistons, the projecting ends 125 engaging respectively the holes and slots.

When the outside pistons are given reciprocatory and loscillatory motions, the engagement of the cross-head with the pins 58 is evidently such as to duplicate these motions 13G properly vconnecting the cylinders with the i in each of the intermediate pistons, the holes 56 being beveled on both outer and inner flange face, in a horizontal direction to permit an oscillatory motion of the ypins 5S. At the same time any unit inthe battery may be disconnected by simply removing its pin 58. v

The pins serve to transmit motion of oscillation and also the upward motion of reciprocation. But the downward or pressure stroke is edected by engagement of shoulders 54C with the cross-head and of the cross-head with the upper ends of the intermediate pistons. By this arrangement Igain simplicity and strength of parts.

What I claim is:

1. In a pump, a cylinder, a piston working therein free to reciprocate longitudinally and to oscillate about its axis, and provided with a rigid extension, a driveshaft directly engaging said rgid'extension, the engaging surfaces of said extension and shaft being adapted to bothl reciprocate and oscillate said piston', substantially as set forth.

2. In a pump, a cylinder, a piston working therein free to reciprocate longitudinally and to oscillate about its axis, and provided with an extension, a drive-shaft directly engaging said extension, the engagin surfaces of said extension and shaft being adapted to both reciprocate and oscillate said piston', the extension being maintained at alltimes immovable with respect to said piston, substantially as set forth.

3. In a pump, a cylinder, a piston working therein free to reciprocate longitudinally and to oscillate about its axis, and provided with an extension, means for maintaining said extension in axial alinement with said piston, a drive-'shaft directly engaging said extension, the engaging surfaces of said shaft vand extension being adapted to both reciprocate and oscillate said piston, substantially as set forth.

4. In a pump, a cylinder, a piston working therein free to reciprocate longitudinally and to oscillate about its axis, and provided with an extension, a hearing for said extension in axial alinement with said piston, a drive-shaft directly engaging said extension the engaging surfaces of said shaft and said extension being adapted to both reci rocate and oscillatesaid piston, substantially as set forth.

5. In a pump, a cylinder, a piston working therein free to reci rocate longitudinally and to oscillate about its axis, and provided with an extension, means for holding said extension in axial alinement with said piston, a drive-shaft directly engaging said extension, said drive-shaft and iston extension having two sets of engaging surfaces one set being adapted to reciprocate said piston, `and the other independent set to oscillate said piston, substantially as set forth. Y

G. In a pump, a cylinder, a piston wolking therein free to reciprocate longitudinally and to oscillate about its axis, and provided with an extension, means for holding said extension in axial alinement with said piston, a drive-shaft directly engaging said extension, said drive-shaft and piston extension having two sets of engaging surfaces, one set for reciprocating said piston, and the other set for imparting an oscillatory motion to said piston independent of said reciprocatory motion, substantially'as set forth. K

7 In a pump, a cylinder, a piston working therein free to reciprocate longitudinally and to oscillate about its axis, and provided with an extension, a drive-shaft directly engaging said extension, said drive-` shaft and piston extension having two sets of engaging surfaces, one for reciprocating said piston, and the other for imparting an oscillatory motion to said piston independent of said reciprocatory motion, substantially as set forth. A

8. In a pump, a cylinder, a piston working therein free to reciprocate longitudinally and to oscillate about its axis, and provided with an extension, a drive-shaft directly en gaging said extension, the engaging surfaces on said shaft and piston bemg adapted to give to said piston a'motion of longitudinal reciprocation and a motion of oscillation about its axis independent of said motion of reciprocation, substantially as set forth.

9. In a pump, a cylinder, a piston working therein free to reciprocate longitudinally and to oscillate about its axis, and provided with an extension, a drive-shaft directly engaging said extension, the engaging surfaces of said shaft and said extension being adapted to give to the piston a longitudinal reciprocation with a rest or dwell between two successive movements, and an oscillatory motion about its axis to said piston with a rest or dwell between two successive movements of said oscillation, the time of each reciprocating motion coinciding with that of an oscillatory rest and vice versa, substantially as set forth.

10. In a pump, a cylinder, a piston work- 4alo ing therein free to 'reciprocate longitudian extension for said piston, a drive shaft directly engaging said extension, said piston extension and said shaft having cam faces for imparting a reciprocatory motion to said piston, means for adjusting said engaging faces for varying the length of stroke of the piston, and means self contained in lsaid extension and movable therewith for locking said adjusting means in any position of adjustment, substantially as set forth.

12. In a pump, a cylinder, a lpiston work-V ing therein free to reciprocate longitudinally,

, and to oscillate about its axis, provided with an extension element, a drive-shaft element,

is given to a lateral faced ,cam secured to one of the last-named two elements, an engaging member secured to the other element adapted to follow the face of said cam, whereby an oscillatory motion is given to the piston, an eccentric cam on said drive-shaft, said piston extension having opposite faces substantially perpendicular to the axis of the, piston, adapted to engage with said eccentric cam, whereby a longitudinal reciprocatory motion said piston, substantially as set forth.

14. In a pump, a cylinder, a piston working therein free to reciprocate longitudinally and to oscillate about its axis, provided with an extension element, a drift-shaft element, a lateral faced cam secured to one of the lastnamed two elements, an engaging member secured to the other element adaptedvtofollow the face of said cam, whereby an oscillatory motion is given to the piston, an cccentric cam on said drive-shaft, said piston extensionv having opposite faces adjustable toward and from each other and substantially perpendicular to the axis of the piston, adapted to engage with said eccentric cam,

whereby a longitudinal reciprocatory motion is given to said piston, substantially as set forth.`

15. In a pump, a cylinder, a piston working therein free to reciprocate longitudinally and to oscillate about its axis, provided with an extension, a drive-shaft`, an eccentric cam secured to said shaft, a yoke-like structure on said extension, having interior faces substantially perpendicular to the axis of the piston to engage said eccentric cam, one of the lateral faces of the oke being camshaped, an arm on said drive shaft adapted to engage said lateral yoke faces, Whereby'an oscillatory motionis given the piston, substantially as set forth.

16. In a lubricator, a series of cylinders, a series of vpistons working therein, means for oscillating and reciprocating one of said'pistons, and means independent of the. aforesaid means for transmitting said motion of reciprocation and oscillation to the remaining pistons, substantially as set forth.

17. In a lubricator, a series of cylinders, a series of pistons working therein, means for oscillating and reciprocating one of said pistons,acrosshead connecting all of said pistons, whereby the reciprocation and oscillation of one may be transmitted to the others, and means for maintaining said cross-head perpendicular to said pistons, substantially as set forth.

18. In a lubricator, a series of cylinders, a series of pistons Working therein, each free to reciprocate longitudinally and oscillate about its axis, means for reciprocating and oscillating one of said pistons, a cross-head engaging all of said pistons, means for maintaining said cross-head perpendicular to the axes of said pistons, means for reciprocating and oscillating one of said pistons, means for converting the motion of oscillation and reciprocation inthe one of said pistons to corresponding motions of the cross-head, and readily disengageable means for converting the motions of the crossehead into oscillatory and reciprocatory motions in each of the remaining pistons.

In testimony whereof I aiiix my signature, in presence of two witnesses.

HARRY ABBEY SEDGVVICK. I/Vitnesses MAR'MN VVENDT, E. J. BRYDEN.

Images