US2454343A - Pump for removal of lubricants from containers - Google Patents

Description

Nov. 23, 1948. c. ROTTER ETAL 2,454,343

I PUMP FOR REHOVAL OF LUBRICANTS FROM CONTAINERS Filed Sept. 8, 1944 2 Sheets-Shoot 1 FIG. I. FlG.2

4 c. ROTTER EIAL PUMP FOR REMOVAL OF LUBRICANTS FROM CONTAINERS Filed Sept. 8, 194.4

2 Sheets-Shoot 2 Patented Nov. 23, 1948 PUMP FOR REMOVAL OF LUBRICANTS FROM CONTAINERS Lutwin C. Rotter, Maplewood, Alexander P. Fox, University City, and Carl H.Mueller, Ferguson, Mo., assignors to Lincoln Engineering Company, St. Louis. Mo., a corporation of Missouri I Application September '8, 1944, Serial No. 553,224

forums. I 1(0). 222-82) This invention relates to lubricator pumps, and

with regard to certain more specific features, to 7 portable pumps of this type.

Among the several objects of the invention may be noted the provision of an improved, lightweight lubricator pump adapted for easy successive attachments to the lids of portable com-' mercial lubricant containers; the provision of a pump of the class described having an improved operating handle and linkage whereby during pumping operation no substantial forces are ap plied toward separation of the lids from the containers; the provision of a pump of theclass described which does not require an extra lid in addition to the one supplied with each commercial container used; the provision of a pump of this class which may easily be attached to the lids of successive new commercial containers without removing the lids, thus to preserve the contents of the containers against contamination during emptying of them; and the provision of a pump of the class described which in connection with the respective containers is compact and well balanced so that the assemblies may easily be carried about by the usual container bails. Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly comprises the elements and f combinations of elements, features of construction, and arrangements of parts which will be exemplified in the structures hereinafter described, and the scope of the application of which will be indicated in the following claims.

In the accompanying drawings, in which is illustrated one of various possible embodiments of the invention,

Fig. 1' is a side elevation showing a pump attached to one form of lubricant container, parts being broken away and showing a section;

Fig. 2 is an isometric view of the container of Fig. 1 prepared for attachment of the pump;

Fig. 3 is a view similar to Fig. 1 but showing the use of another formQof suction tubeon a differently shaped container, the dotted, lines showing the relationship between the shape of the container of Fig. 1' and that shown solid in Fig. 3;

Fig. 4 is an enlarged longitudinal section of parts of the pump per se being taken on line 4-4 of Fig. 5; i v

Fig. 5 is a horizontal section taken on lines 55 of Figs. 1 and 4; andi T b Fig. 6 a right-end elevation of Fig. 5.

Similar reference characters, indicate corresponding parts throughout the several views of the drawings.

Such containers are ordinarily made of light gage stock. The top edge is rolled as indicated at 5 for cooperation with .a groove rolled into the ;edge of an even lighter gage cover I. A popular gage for such covers is number 26 which,- obviously, is not very stiff. This requires especial care in mounting any pump thereon.

From the grooved edges of the covers extend tongues 9 which upon application of the covers to filled containers are bent in under the rolled portion 5 to hold, the covers in place. These tongues carry openings H for the insertion of a screw driver which is fulcrumed on the edge of the lid in order to open the container. Sometimes the containers are shorter and of greater diameter than shown in Fig. 1 (see the solid lines in Fig. 3 and compare the dotted lines in Fig. 3).

Referring now more particularly to Fig. 1, there is "shown at numeral l a portable commercial container for lubricant; for 7. example the twentyfive pound size. A carrying ball is shown" atil.

Referring more particularly to Figs. 4-6, numeral i5 indicates the body of our new pump which includes a supporting pad portion ll wherein are openings IQ for the reception of suitable fastenings which will be discussed hereafter.

A horizontal bore 2| carries a sliding plunger 23, the front face of which traverses a lower inlet opening 25. The opening 2.5 is threaded to receive a rigid suction tube 21, such as shown in Figs. 1, 4 and 6. Or, this threaded opening 25 may have threaded into it a nipple 29 formed on the end of a short length of flexible, oil-resistant tubing 30 made'of synthetic rubber, plastic or the like. In the latter case of the flexible inlet, the bottoms of various lengths of containers may be reached. In the former case of the rigid inlet pipe, 'it is cut with a sharp bevel 28 so that if desired it may be forced through the-thingage material of the head 1, the length being such as finally to place the bevel near the bottoms of the containers for which the pipe is adapted.

The outside rear end of the plunger 23 is pivoted at 3| between the ends of a generally U-shaped. one-piece clevis member 33. In its central region the clevis member 33 is pivoted to a handle 35 (see pivot pin 31). One end of the pad i1 is formed as a clevis 39 in which is pivoted the lower end 4! of the handle 35 (see pivot pin 43). It will be noted that the rear end of the clevis 33 is closed in solid as indicated at 45, which when the linkage is in the dotted-line position shown in Fig. 4, functions in connection with the handle 35 as a linkage stop, without dei will be noted that it has an angled butt 41 which carries the openings for the pivotpins 31 and 43.

This butt of the handle also serves as alinkin the mechanism for actuatingtheplunger. At tached to the butt is a curved grip member 43.

On the end of the grip member as is a hoot The general shape of the grip is semi-elliptical.

The outlet of the bore 2i is provided with a nipple 53 between which and the bore 2i is a check valve 55 held in place by a spring 51. A

flexible lubricant line 59 is attached to the nipple l3 and at its end carries a suitable coupler BI for temporary attachments to lubricant fittings v such as are carried on various classes of machinery, for example farm machinery. Reciprocation of the plunger 23 by oscillation of the handle 35 abstracts lubricant from the suction tube 21 (or ill-as the case may be) and forces it out over the line 59. Oscillation of the handle 35 is limited between the solidand dotted-line positions shown in Fig. 4. It will benoted that these limits with respect to the pad I I are independent of the apparatus to which the pump is attached.

Cooperation of the clevis 33 with the butt controls the dotted-line position limit and cooperasertion of either the tube 21 or 30. This brings the pad I! against the lid, whereupon pointed,

self-tapping drive screws such as shown at 63 may be lightly tapped with a hammer to start holes and then screwed in to make the desired fastenings. When the pad is secured to the lid, the broad flat lower surface thereof surrounding the suction tube engages the upper surface of the lid to provide a seal to prevent entry of contaminating matter into the container through the hole 60 in the lid.

On the other hand, the hole 60 may be formed simply by pushing down the pump from above, using the bevel 28 as a former for the hole 60, in which event, as the hole is formed, the tube 21 is driven down to the desired position shown in Fig. 1. The screws are then applied as before. To aid in forcing the beveled pipe 21 through the lid I, an anvil I6 is cast on the body I5 over the pipe 21 so that some additional force may be brought to bear to puncture the lid. This may be done by striking the anvil I6 with a hammer, thus driving down the pipe 21.

Or, if the user prefers to remove the lid before puncturing it, this may be done by means of a screw driver as a pry in the openings I I. More precise openings may then be made and the attachment made by the use of bolts with nuts. The lid may then be replaced and the ears 8 turned down. In this case, and in the one where hole 60 is battered in, no bevel 28 is needed.

'It is preferred that the user use one of the methods requiring no removal of the lid, because then danger of contamination of the lubricant 61 is almost entirely eliminated.

The degree of fastening effected by the screws, as described, is enough, in view of the particular placement of the pump and the form of its operating handle and linkage, That is to say, the handle 35 which bends over the parts of the pump which are fastened to the lid places the operator's hand and directs the force of the hand which operates the handle 35 directly against the area within the periphery of the lid I. Also, when most thrust is applied, this is applied practically perpendicular to the lid in a direction which tends to seat it better on the container I, instead of having any prying or loosening action. Also, when the suction stroke is brought about, the pull on the handle 35 is through the area of the lid within its periphery with only a very small amount of tilting action in the effective parts 01' the stroke. The result is that although the lid I is only fastened to the container I with the bentin tongues 8, and although the pump is fastened to the relatively light lid by means of the light fastener 83, the lid is not pried from the container by the pumping action, nor is the pump body pried from the lid. All thrusts are applied as simple tension or compression. Thus the preferred. light form of fastening of the pump to head I by means of screws (which does not require removal of the lid 1) may be resorted to without fear that the pump will come off, Nor need concern be shown for the relatively weak fastening eflected between the lid and the container by the ears 9.

Another feature of the curved handle is that when it is in the solid-line position shown in Figs. 1, 3 and 4 it permits of freely turning'up the ball 61 of the container I so it may be carried about conveniently. It will also be noted that this is true regardless of the particular rotary position assumed by the handle 35 with respect to the vertical axis of the container I. Thus the user needs not to make careful measurements for attachment purposes. is necessary. Such placement also automatically brings about, in connection with the curved handle, the more or less vertical stroking desired to bring about the desirable thrusts on the cover 1.

The purpose of the hook Si is to prevent the hand which grips the handle extension 48 from slipping off the rounded portion of the handle in. applying maximum leverage in making a com-' pression stroke, A feature of the rounded handle is that the hand may easily slip around it from a position near the hooked end or the handlefor powerful strokes, to obtain high pressure at a low volume rate, to a position near the fulcrum 43 for short, quick and less powerful strokes, for relatively large volume rate and low pressure, or for priming th pump.

It will be understood that the user may furnish the pipe 21, any piece of pipe having the proper threads being suitable, and that it may be cut off by a hacksaw so as to end near the bottom of the container to be used. In the case of the use of a flexible tube 30, this adjustment is not necessary as suggested by Fig. 3.

It will be understood that after a container has ,low cost. Its appearance is also good. The contents of the container are preserved from contamination. Even in the case where the lid is removed for application of the pump, contaminanation is prevented during use. It should be remembered in this connection that portable lubricant apparatus of this class is carried into locations where entry of all types of foreign mate- Rough centering is all that particularly advantageous for obtaining a quick prime of the pump, Details of thisvalve pointing out its particular advantages are supplied in the co-pending application o1.John R. Graei, Serial No. 550,956, filed August 24, 1944, for Check valve. Complying with rule 43, it should be noted that claims drawn to said check valve appear in said application. a

In view of the above, it will be seen that the several objects of the invention are achieved other advantageous results attained.

As many changes could be made in the above constructions without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

We claim:

1. A lubricant pump adapted for attachment to the relatively light lid oi a portable commercial lubricant container, comprising a body portion formed to provide a horizontal pad having a lower surface adapted to engage the upper surface 01' said lid and to be attached thereto, and also to provide a horizontal cylinder above said pad, a horizontally reciprocating plunger in said horizontal cylinder of said body portion, a linkage connecting the body portion and said plunger, said linkage including a pump handle, said handle being angled over the body portion for substantially vertical strokin in the plane of reciprocation oi the plunger with operating thrusts being directed within the boundary of the lid, and

a suction inlet extension on the underside of the body portion for extension through an opening in the lid and into the contents of the container.

and

2. In a pump of the class described, a body portion having a flat bottom pad for attachment to the lid of a commercial lubricant container, a horizontal bore in said body portion, an outlet check valve at one end of said bore, a reciprocating plunger in said bore and having one end extending therefrom, said body having an inlet connecting with the bore intermediate its ends and traversed by the end of the plunger which works adjacent to said outlet valve, said body including a clevis adjacent the point where the plunger extends rrom the body, an oscillating operating handle pivoted in said clevis and embed over the body portion, said handle and plunger moving in the same plane, a hook on the free enact the handle, a clevis pivotedto the exposed portion of the plunger and to the handle, and having its sides joined behind the handle at a distance adapted to form a stop in connection with the handle upon limited withdrawal oi the plunger from the body portion. 0

3. A lubricant pump for attachment to the light lid of a portable commercial container, said pump comprising a body portion provided with the body portion and the plunger, a driving portion of the linkage being formed as a curved han I die over the body portion and oscillating substantially up and down over the same and movable to a limiting position to clear said anvil for striking to drive said tube through a lid, said curved handle allowing for reciprocation of the plunger by thrusts which are directed to intersect the lid within its line of peripheral attachment to the container.

4. A lubricant pump for attachment to the light lid, oi a portable commercial container, said pump comprising abody portion provided with openings for accommodating attaching means to said lid, said body portion having a suction inlet on its bottom, a suction tube extending downward from" the bodyportion and attached to said inlet. a

reciprocating plunger in the body portion, an opcrating linkage connected between the body portion and the plunger, a driving portion or the linkage being formed as a handle extending over the body portion and oscillating substantially up and down over the same and movable to limiting positions, said handle allowing for reciprocation of the plunger by thrusts which are directed to intersect the lid within its line of peripheral attachment to the container, said linkage including a U-shaped clevis pivoted at its open end to the plunger and limiting motion of the handle in one direction by contact with the body, said clevis at a mid-point being pivoted to the handle and being closed at its spaced opposite end to contact the handle to limit its motion in the other direction independently of the lid.

5. A lubricant pump for attachment to the light lid of a portable commercial container, said pump comprising a body portion provided with openings for accommodating attaching means,

saidbody portion having a suction inlet on its 1 bottom and an anvil on its top, a suction tube extending downward from the body portion and attached to said. inlet, a reciprocating plunger in the body portion, an operating linkage connected between the body portion and the plunger, a driving portion or the linkage being formed-as a handle curved over the body portion and oscillating substantially up and down over the same and for attaching means, said body portion having a suction inlet on its bottom, a suction tube extending downward from the body portion and attached to said inlet. said suction tube being formed on its bottom with a beveled cutting face, said body portion being provided with an anvil on its upper side above said tube for driving the tube through a lid, a reciprocating plunger in the body portion, an operating linkage connected between the body portion and the plunger, 9. driving portion of said linkage being formed as a curved handle over the body portion and oscillating substantially up and down over'the same and movable to an outer limiting position to-clear said for reciprocation oi the plunger by thrusts which V memes are directed to intersect the lid within its line of peripheral attachment to the container.

7. A lubricant pump adapted to be removably attached to a lid of a lubricant container and to pump lubricant therefrom without removin the lid of the container, comprising a pump body formed to provide a horizontal supporting pad having a lower surface adapted to engage the upper surface of said lid and to provide a horizontal cylinder above said pad, a suction tube extending downward from the lower surface of the pad adapted to be inserted through an opening formed in said lid into the lubricant in the container to seat the lower surface of said pad against the upper surface of said lid, means for removably securing said pump body on said lid with said surfaces in engagement to provide a guard against entrance of contaminating matter into the lubricant in. the container, said pump body having a suction inlet providing communication from said suction tube to said cylinder, a reciprocatin plunger in said cylinder, handle means on said pump body for reciprocating said plunger, said pump body being provided with a horizontal outlet for said cylinder, said handle means oscillatand being arched over the lid in a direction such LUTWIN C. ROTTER. ALEXANDER P; FOX. CARL H. MUELLER.

10 REFERENCES CITED The following references are of record in the file of this patent: 7

UNITED STATES PATENTS 15 Number Name Date 459,529 White Sept. 15, 1891 1,616,634 Miller Feb. 8, 1927 1,639,409 Johnson Aug. 16, 1927 1,666,064 Ament Apr. 17, 1928 20 2,172,136 Davis Sept. 5, 1939 2,257,725 Davis Oct. 7, 1941 2,299,492 ,Pfauser Oct. 20, 1942 FOREIGN PATENTS 0 Number Country Date 379,757 Great Britain Sept. 5, 1932 ing in a plane including the axis of the plunger that thrusts for oscillating the handle are directed to intersect the lid within its line of peripheral attachment to the container.

Images