US2403122A - Pump - Google Patents

Description

Julyl .2,l 1946.

l A. `D. RElsr-:RT E-r AL PUMP Filed May 21, 1943 2 Sheets-Sheet l July 2, 1946. A. D. RElsERT ET AL j 2,403,122 l PUMP FiledMay 2l, 1943 2 Sheets-Sheet 2 Patented July 2, 1946 PUMP vAugust D. Reisert, St. Louis, and Lutwin C. Rotter, Maplewood, Mo., assignors to Lincoln Engineering Company, St. Louis, Mo., a corporation of Missouri Application May 21, 1943, Serial N0. 487,894

7 Claims.

'I'his invention relates to pumps, and with regard to certain more specific features, to portable pumps for pumping lubricants and the like.

The invention is an improvement upon the general types of pumps shown for example in U. S. Patents 2,083,591 and 2,179,621.

Among the Yseveral objects of the invention may be noted the provision of a. manually operable portable pump which, without specialized additional lugging equipment, may be carried by two persons; the provision of a pump of the class described which pumps directly from shipping or other containers of substantial capacities and which protects the contents of shipping containers when once opened; the provision of a pump of this class in which the mechanism which provides the leverage for pumping also acts as the lu'gging equipment, said mechanism being useful on various pump models and thus economical to make. Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly comprises the elements and combinations of elements, features of construction, and arrangements of parts which Will be exemplied 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 are illustrated several of various possible embodiments of the invention,

Fig. 1 is an elevation of one form of the invention, parts being broken away' to show a. section;

Fig. 2 is a fragmentary view of upper portions of Fig. 1 showing an alternative position of partsr for lugging;

Fig. 3 is a fragmentary View similar to Fig. 1 but showing an alternative form of the invention, parts being broken away;

Figs. 4 and 5 are sections taken respectively on line 4-4 of Fig. 1, and 5 5 of Fig. 2;

- Fig. 6 is an end view of a combined pump handle and lugging bar; and,

Fig. 7 is a longitudinal section taken on line 1-1 of Fig.l 6.

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

Referring now more particularly to Fig. 1, there is shown at numeral I a. cylindrie housing having two foot steps 3. This housing is adapted to receive an open, commercial shipping lubricant container 5. The container sets in the housing and is ordinarily'one of the sizes which require more than one man conveniently to lift it along 4upward into the bottom of the casting I1.

with the other parts to be described. It is desirable Vto have such enclosed containers as portable as possible in the field, particularly in military operations. Thus containers of the type specified, ywhen housed as specified ordinarily require two men forv quickly transporting them from point to point, Ordinarily to make a device adaptable to handling by two men, special lugging equipment is necessary which it is desirable toavoid in order to reduce structural complications and cost. The present invention provides the solution for this problem.

The top of the housing I is formed as shown at 1 to receive a cover 9 which carries slotted lugs II for engagement with pivoted lug bolts I3 and thumb nuts I5. When the bolts I3 are swung up and the nuts I5 screwed down, the cover 9 is held to the housing I. By unscrewing the nut I5 and swinging down the bolts I3, the cover is released for removal. The cover 9 forms the protection for the open lubricant container 5 in the housing Bolted to the top of the cover 9 is a pump frame casting |1 having a lubricant outlet I9 leading from a pump cylinder 2| the latter being screwed piston rod 23 passes through the cylinder 2| and out of the casting I1 through a packing gland 25. At its upper end it is pinned (at 21) to a pump rocker lever 29. The lever 29, which also constitutes a handle bushing is pivoted at 3| to a bridle or coupler link 33. Link 33 in turn is pivoted at 35 to the casting |1. The lever 29 is of special form to provide a dual function which will later be described.

Referring to the piston rod 23, it passes through the cylinderfl and at its lower end carries an extension member 31. Member 31 passes through a check valve 39 in the cylinder 2|. It also passes through an auxiliary pump cylinder 4| having an open lower end 43.

At the lower end of the extension 31 is a piston 45 which during reciprocation of the rod 2 3 moves into and out of the cylinder 4|. When the piston 45 is down as shown in Fig. 1, lubricant flows into the cylinder 4|, and as the piston 45 rises a charge is trapped in this cylinder 4| and compressed up into the cylinder 2| through the check valve 39. Upon descent of the rod 23, the intrusion thereof into the space in the cylinder 2l results in extrusion of. lubricant from the outlet I9. This is because the diameter of the rod 23 is greater than that of the extension 31. The pumping elements have been described primarily for completeness, similar ones being known in l 'Fig 7.

adapted to be inserted into a mass of fluid to be pumped. This pump of Fig.,1 is single-acting in Outside of the cylinder 2| is a sliding bushing g 41 which carriesa follower plate 49 for preventing air craters in heavier lubricants. This follower plate simply rests upon the descending lubricant p surface and settles down Vwith it as lubricant is abstracted by the pumping elements. A stop 5| prevents the follower plate i9 from falling away from the cylinder 2|` whenV upon` removal'of the cover k9 the cylinder is rwithdrawn Yfrom the container5. Y f A primary feature of the invention has to do i with the handle bushing lever 29. This lever is constituted by a stamping formed as a hollow cylinder or bushing 53 (Figs. 4 and 5)A welded along one side as at55 and having downwardly i extending parallel walls' 51. These walls 57| carry lugs 59 and 6| in which are formed flanged openings 63 and 65 respectively for carrying the pins 21- and 3| respectively. The pins are held by suitable cotter keys 66 as indicated.

Through bushing 53 slides a handle 61 having threaded thereto at one endv a grip B9. vIt is knurled at ,its` other Yend as indicated at 1| in Forced onto the knurled partY 'Il is a thimble '|3having threads '|5,'raised with respect to the surfaceof the handle B1. This thimbley is also flanged as indicated at 1l to a diameterl greater than the inside diameter of the bushingA 53. After the thimble is knurled the part- 1| isv pressed on and staked as indicated at '|9 to hold The assembly oi.`

it permanently in position. the thimbleon thev handle 61 is done after the handle 81 has been inserted through the bush` ing 53.

The bushing 53 is threaded at its opposite ends as indicated at 8| and 82, the crests of the threads being iiush with, or outside of, the inside diam-` berprganizes orrlocks the handle 61 rigidly with the lever 29. Hence by oscillating at the handle grip 59, the lever V129 is oscillated to reciprocate the pump rod 23.

By rotating the handle 61 clockwise, the threads 'l5 and 8| are disengaged and the handle may then betelescoped to the position shown in Fig.r2

and ,two men then can'use it as a beam for lifting the. housing along with the attached and contained parts. cover 9 is at this time locked to the housing I by the parts I3 and l5. Y

The described telescopic arrangement for the handle 6l (Fig. 2) manually facilitates transportation in the, field. Also, during shipment in vehicles, the handle may be released and shifted to its centralized position as shown in Fig. 2 where it is not in such a protruding position as it would be were it permanently axed to the handle lever bushing 29. Also, it is in the plane of the two foot steps 3.

It is of course assumed that the the art. Pumping assemblies of this 4class built l in connection with downwardly extending tubes i suchfas 2| are ordinarily known as lance pumps class lever arrangement obtained by reversing the position of the telescopic handle 61, then introducing threads 15 into the threads 82. While it is clear that this diierence in leverage may be accomplished upon a given container by simply unscrewing the grip 69, reversing 67, and reapplying the grip 69, this is not the primary intention. The primary intention is to make the;l reversal at the factory, when the handle bushing 29 is to be used on a pump of lower pressure.

In Fig. 3 corresponding parts have corresponding reference numerals so far as they apply, but this is a low-pressure, double-acting pump. At thebottom it, carries an inlet valve 83. The loose hollowy piston on the bottom of the rod 24 works directly in the cylinder 22 and vitself forms a check, valve 81. Thus by reciprocating the rod 24 vliquid iiows through the inlet valve 83 and the piston check valve 8l. In this case, the hollow piston 85 floats on a short extension 89 from the rod 2d and seats upon a head 9| on the end of said extension 89. This low-pressure pump is not new itself but it isv shown to indicate the reason for using a rst class lever in Fig. 3. Thus it' will be seen that the handle bushing 29 is interchangeable on various pumps for first and second class leverage. and that the telescopic handle is reversible therein for producingthe rst and'second class lever functions as desired.

It is of` course understood that in both forms ofthe invention a suitable lubricant outlet. check valve and hose or lineare attached to the outlet In view of the above. it will be seen that the several objects of the invention are achieved and other advantageous results attained.

As many changesV could be made in the. above constructions without departing from'tfhe scope of thev invention, it is intended thatV allgmatter contained in the Vabove description or shown` in the accompanying drawings, Shall be interpreted as illustrative and not in a limiting sense.y

We claim:

1. A manually portable mechanism;V oiltheclass i described comprising a manually portable body, a reciprocating plunger member associatedwith the portable body, an oscillating member pivoted to thereciprocating plunger member, an operating handlel telescoping said oscillating member, and means for removably fastening-one end of the oscillating` member by means. fiornfling a. quick-V detachable connection between an end ofthe teh escopic handle and said oscillating member, whereby said handle mayv rigidly be attachedv to the oscillating memberto apply leverage thereto to operate the plunger or to be disconnected and the oscillating member by means forming aquickdetachable connection between an endof the telescopic handle and said oscillating membergwhereby said handle may rigidly be attached tothe oscillating member to apply leverage thereto: to operate the plunger or to be disconnected to form a supporting beam for the portable body.

3. A portable-unit comprising a portable housing adapted to receive a loadedV and open con',-v

tainer, a removable cover attachable to said housing and adapted to support it, a cylinder attached to said cover and forming an extension insertable into said open container, a plunger reciprocating in said cylinder and extending upwardly and outwardly therefrom, a rocking bushing pivoted to said plunger, a link pivoted to said bushing and to said cylinder, a telescoping handle passing through said bushing, a quick-detachable means at one end of said handle for attachment to the bushing and being releasable for positioning the handle So that the bushing is intermediate and whereby the handle may be used as a means to support said cylinder and attached parts, including the housing and the container.

4. A rocker handle assembly for use as a iirst or second class lever in a reciprocating pump mechanism having a frame and a plunger reciprocating means therein, comprising a link formed as a cylindric bushing having two spaced pivot means, a movable coupler link ,extending from one pivot means to the frame, said reciprocating means being attached to the other pivot means,

an operating handle having a part telescoping the bushing, a grip at one end of said-handle and a lock lmember at the other end, and means at one end of said bushing engageablev with said lock member.

5. A rocker handle assembly for use as a rst or second class lever in a reciprocating pump mechanism having a frame and a plunger reciprocating means therein, comprising a link formed as a cylindric bushing having two spaced pivots, a movable coupler link extending from one pivot means to the frame, said reciprocating means being attached to the other pivot means, an operating handle having a part telescoping the bushing, a removable handle grip at one end of said handle and a lock member at the other end, and means at both ends of said bushing selectively engageable with said lock member.

6. A rocker handle assembly for use as a rst or second class lever in a reciprocating pump mechanism, comprising a link formed as a cylindric bushing part having two spaced pivot points arranged along the side of the cylindric bushing part, an operating handle having a part telescop ing the bushing, a removable handle grip at one end of said handle and a lock member at the other end, means at both ends of the bushing arranged' for releasable locking engagement with said lock l member, the lock member and the grip being larger than the inside of the bushing normally to prevent separation of the handle and bushing.

'7. A rocker member for a pump mechanism comprising a cylindrc bushing, spaced pivot points thereon arranged on a line beside the axis of said bushing, said bushing having internal threads at one end, a telescopic handle passing through the bushing and the threads, and a threaded lock means at one end of the handle engageable and disengageable with said threads in the bushing, whereby the handle may at one end be rigidlyy attached to the bushing or telescopedv to locate the handle at another point in the bushing.

AUGUST D. REISERT. LUTWIN C. ROTTER.

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