US1991408A - Lubricator - Google Patents

Description

Feb.19,1935. L E H, MOROW M l1,991,408

LUBRICATOR Original Filed Dec. 22, 1930 Perenfed Feb. 1e, 193'5 LUBRICATOR Emmet ll. lMorrow and John C. Morrow-Chicago, A111.,.,assignors to T. H. Gauthreaux, hicago, Ill.

' Applicatie neeember 2z, 1930, serial No. 504,021

Renewed July 9, 1934.`

' Claims. (Cl. 221-51'.)

This invention relates to a lubricator and particularly to one for discharging oil at high pressure into an oil aperture.

An object of the invention is to provide a lubricator whereby oil may be ejected therefrom under high pressure. l

" Another object of theinvention is to provide a lubricator having a spout withacylindrical portion therein in which portion a pistonis movable for trapping-a charge of oil'and ejecting said charge under high pressure,

. Another object of the invention is to provide `a lubricator of the type employing -a discharge spout wherein oil may be ejected underpre'ssure irrespective of the position of the lubricator.vl

A yet further object of theinvention is to provide a lubricator of the spout type in which the spout is fashioned with a cylindrical portion wherb'y a charge of oil maybe trapped in said cylindrical portion, and' including a plunger which on one4 Vstroke thereof serves to eject the entrapped charge under pressure and entrap anothercharge on the next stroke.

A still further object of the invention is to provide a lubricator of the spout type wherein a, piston is movable within the spout for entrapping and discharging a charge vof oil under pressure and in which provision is made to prevent accidental displacement of the parts when the spout is disconnected.

- According to the invention, the spout 'of a lubri- Vcator of the spout type is provided with a cylindrical portion for a portion of its length and has a piston movable in the cylindrical portion. A

' plunger in the lubricator body is provided to move the piston in the direction to eject Ior open the spout and a spring is provided for returning ther Figure 1 is a side elevational view of a lubricator embodying the present invention.

Figure 2 is an enlarged elevational view of a fragmental portion of the spout showing the body of the lubricator in section, and illustrating certain features of construction.

Figure 3 is an enlarged broken vertical sectional view through the spout, showing the illustrated embodiment of the ther. detail. Alubricator consisting of a body 1 is illustrated herein as of the conventional can type, al-

though the invention is not limited to the can 5 type. l l

The body 1 is provided with an inwardly dished bottom 2 which is secured to the lower margin of the body l'by having the edges of the bottom 2 crimped over' the margins -of the body 1 forming a bead 3. This connection is, of course, liquid tight.

The illustrated form of lubricator discloses the body v1 as having its upper end ufashioned conically as at 4 and terminating in a neck 5 which is threaded. The upper margin of 'the neck 5'is' inturned forming a bead 6. Y f

A sleeve 7 is securedin a. centrally disposed aperture of the bottom 2 and extends upwardly, terminating adjacentthe neck 5. The sleeve is secured in the bottom 2 by having its lower end crimped over the outer surface 'ofthe central portion of the bottom 2 as atl! and soldered with solder at 9 on the interior of the bottom` about the sleeve 7. 'I'he upper lend of the sleeve 7 is outturned, forming a bead 10.

A plunger 11 is movable within the sleeve 7 and has its lower end extending throughthe lower end of the sleeve, Where it is provided with a head 12 for applyingpressure to the plunger 11 in order to eject oil from the lubricator. y

A spring 13 is arranged about the plunger 11 outwardly of the bottom 2 .and lies between the bottom 2 and the inner surface of the head v12 of the plunger.

The upper end of ,theplunger 11 is provided with a stop collar 14 resting against" the bead' of the sleeve v7 to prevent inward movement of the plunger within the sleeve 7 beyond the determined point. The upper end of the plunger 11 is pointed at 15. 1

A cap 16 is threaded onto the neck l5 and is provided with an aperture 17 in which a cylindrical member 18 is fastened. The member 18 is provided with an annular shoulder '19 for restingv against the top surface of .the c ap 1 6 and with a portion 20 for'entering the aperture 17 in the cap. 'I'he .inner end of the portion 20, .after the cylindrical member 18 is inserted in the aperture 17 is swe'dged or crimped overforming an inner flange 21 cooperating with the outer flange y 19 to secure the cylindrical portion 18 in the cap.- -A ring washer 22 is inserted against the under surfaceof the cap 16 about the`aperture 17 therethrough for increasing the thickness ofthe 'cap u invention in furchambers of different sizes. 30'

portion 18,

A-gasket 23 is secured within the cap 16 for sealing the joint between the cap 16 and the bead 6 of the neck 5 in order to prevent escape of lubricant at this point.` z i The cylindrical ber 18 is provided with a central uniform bore 24 in which a piston 25 is arranged for axial movement.

The piston 25 has a counterbored portion 26 and a lower portion 27 of'reduced diameter. The latter portion 2'7 is bored from end to end, providing a passage 28 through the same.`

The piston 25 has' a shoulder 29 formed at the junction of the lower portion 27 and the body portion 25 of the piston. This shoulder 29'rests against the ange 21 formed from the lower end of the cylindrical memberA 18 at the time the said lower member is swedged to serve to prevent the escape of the piston 25 from the lower end of thef'cylindrical member 18 when the cap 16 is removed from the body 1.

The upper end of the cylindrical member 18 is provided with external threads 30 for receivinga cap 31 having internal threads in its skirt portion for securement to the cylindrical portion 18.

The cap 31 is bored from end to end forming' The lowermost chamber 32 communicates with the upper end of the cylindrical portion 18.A An intermediate chamber 33 within lthe cap is of less diameterthan the chamber 321,V The walls of the member 31 between the lchambers 32 and 33 are inclined outwardly from the chamber' 33 to the chamber 32'providing an annular inclined shoulder 34.

A cage having an inclined surface 35 and a hollow body 36 is disposed within the chamber 33 of the cap 31. The top 37 of the cage is imperforate. There are provided two side openings 38one of which is shown in Figure 3, allowing communication between the interior of the cage andthe chamberi 33. The lower portion of the cage is provided with an opening 39. which is normally closed by a ball 40 pressed against said opening by means of a spring 41 within the cage and engaging the under surface of the top 37 thereof and the ball 40. The cage is movable wlthinthe cap 31.

A spring 42 is, when the cap 31 and cylindrical member 18 are assembled, interposed between the piston 25 and the under surface of the cage. This spring is an expansion spring and tends to maintain the cage up against the annular shoulder 35 of the cap 31, an'd tends to move the piston 25 awayfrom the cage and maintain the same against theshoulder 21 of the member 18.

'A-spout .43 is threaded into the upper end of the cap 31. The spout may be cylindrical and v`o1' uniformfdiameter, or it may taper toward the discharge point as desired.

An` oil Vseal member 44 is removably arranged within the endvof the spout 43. v The oil seal membei' is provided with a convex end 45 of yielding material to effectively seal connection between the end of the spout and an oil fitting, so that when the plunger 11 is actuated theV full force of the pressure created thereby will be eiective to discharge-oil into the'oiliitting. The oilA seal 44 is provided with a tip 46 for entering an oil fitting or oil hole to discharge oil into the same, the tip 46 being apertured to allow escape of oil through the same. u

The pats are so arranged that whenthe plunger 7' is in retracted or normal position, which is the position shown in Figure 2, theplston 25 will have the lower end of the bore 28 and the inward extension 27 thereof spaced slightly. from the plunger, so that when the lubricator is tilted, oil will enter the vbore 28 in the piston 25 and the prevented from escape by reason Aoi! the spring pressed ball 40 which closes the opening 39 through the cage except as hereinafter described.

Figures 2 and 3 show the arrangement and disposition of parts when in normal or inactive position, that is, the position the parts assume when the lubricator is not being used.'

vThe operation is as follows:

The body 1 is illled with oil or proper lubricant through the neck 5, the cap 16, of course, having been removed. The provision of the sleeve 7 pre- Vents leakage of the lubricant through the bottom 2 of the can. The cap 16 is then applied to the neck and the lubricator ready for use. The operator applies the oiling seal 45 to the oil aperture by tilting the lubricator whereupon oil enters the cylindrical member 18,` filling the i same. AThe operator then applies pressure to the Pressure on the plunger 11 chamberl within the cylindrical member 18 being vthe cage then the oil is forced through the spout 43 into the oil fitting or hole.v The operator releases pressure on the head 12 of the plunger 11 as soon as he has pushed the same inwardly once,

Alubricator thereupon delivers more lubricant into the cylindrical member 18 ready for another shot when desired.

The provision of the ball valve serves to prevent leakage and dripping from the end of the spout should the can be inadvertently overturned or put away with the spout in position.

The provision of the annular shoulder 29 for operating with the l inner annular shoulder formed by the switching of the lower end of the cylindrical member 18 prevents displacement of the piston 25 and the spring 42 whenever the cap 16 is removed from the body 1.

l The spacing of the pointed end 15 of the plunger 11 from the piston.25 allows entrance of,oil into the cylindrical member 18 whenever the lubricator is tilted, thus assuring at all times the supply of oil within the cylindrical member 18 ready to be trapped and discharged under pressure whenever the plunger 11 is actuated.

The invention is not limited to the use of the oiling seal 44, such as illustrated, as any suitable seal or tip may be applied to the nozzle 43 to accommodate the lubricator-to any type of tting or oil receiving aperture.

'I'he cage 36 is movable within the cap 31 and may be removed from said cap when the cap is any but upright ,disconnected from the cylindrical member 18.

`removed from the cylindrical member 18 when the cap 31 is detached from the same, should occasion arise.

The construction of a lubricator made in accordance with this invention provides a lubricator wherein oil pressure of several hundred pounds may be created for proper lubrication purposes. 'Ihe parts are so arranged as to be readily and economically manufactured and assembled and at the same time, provide a structure which is strong, efficient, durable, and satisfactory for the purposes intended.

The oiling seal 44 may be frictionally retained Within the end of the spout 43 or it might be screw threaded if desired.

The amount4 of pressure of oil being discharged from this lubricator may be regulated by the spring 41. A light spring, of course, will yield to lower pressure than will a stiier spring; consequently, the selection of a proper spring will` result in the creation of suliicient pressure within the cylindrical member 18 to open the valve 40 against the action of the spring 41, thus allowing discharge of lubricant under such pressure.

A lubricator made in accordance with this invention has been found very useful in applying oil to machine parts, automotive parts, and the like, where it is desired to inject oil for lubrication purposes and also forthe purpose of cutting away any accumulated grease or like lubricant which has heretofore been used and which has become useless because oi solidification or otherwise.

The invention has been described herein more or less precisely as to details, yet it is to be understood that the invention is not to be limited thereby, as changes may be made in the arrangement and proportion of parts and equivalents may be substituted. without departing from the,v

spirit and scope of the invention.

The invention is' claimed as follows: 1. A lubricator including a body, a cap removably associated with said body, av cylindrical portion supported by said cap, a bored piston movable within said cylindrical portion' and communicating with the interior of the body through vsaid bore, a spout connected to said cylindrical portion, a normally closed valve. between said cylindrical portion and said spout, land a plunger operable through the bottom of the ybody for moving said piston toward said valve to eject oil past said valve, the end of the cylindrical portion adjacent the cap being provided with a shoulder to prevent escape of said piston through that end land supporting said spout, a cylindrical member attached to said cap, a second cap removably secured to said cylindrical portion above said rst cap, a cage removably disposed within said second cap above said cylindrical portion, said cage containing a valve arranged to open toward the discharge end of the spout, a spring within said cage for normally maintaining said valve in closed position, said cage having lateral discharge openings, a piston slidable in said cylindrical portion, said piston having an oil admission port therein, a plunger in said body and operable through the body bottom for closing said oil ad`- mission port and moving said piston toward said cage, and a spring for moving said piston in the opposite direction, said-cylindrical portion being provided with means for preventing excessive movement of said piston away from said cage.

4. A lubricator including a. can body, a spout removably associated with said body, said spout having a movable bored piston in a portion thereof communicating with the interior of the cam body through said bore for oil passage past said piston, avalve above said piston and maintained normally in closed position, a shoulder engaging said piston for limiting its movement away from said valve and also for preventing dislodgment of the same from said spout,` and a'plunger operable through the bottomof the bodyfor moving said piston toward said valve to eject oil past said valve. l

. 5. A l bricator including a can body, a cap removably associated with said body, a cylindrical member secured to said cap, a piston movable in said cylindrical kmember and having a portionopenings therein, a ball within said cage member' for normally closing said valve seat opening, a spring for urging said ball against said opening, and a plunger for moving said piston in a direction to discharge oil past saidv valve and through said valve seat opening when said piston is moved toward said valve, said valve closing against its seat on release of pressure against said plunger..

Emmi' H. Monnow. JOHN c.A Monaow.

Images