US2336989A - Stirrup pump - Google Patents

Description

Dec. 14, 1943. D KELLEH'ER ET AL v 2,336,989

STIRRUP PUMP Filed Febl 2o, l194.2

2 Sheets-Sheet 2 INVENTORS DAN/EL KELLEf/EE d HE/MHN J 7720015 atented Een. i4, i943 AT NT STRRUP PURE? Application February 20, 1942, Serial No. 431,726

(Cl. 10S-21S) l Claims.

This invention relates to a hand pump of the stirrup type, wherein there is a barrel to which is secured a bracket adapted to be pressed on the ground by the operators foot to hold the barrel in vertical position within a bucket. This enables a plunger in the barrel to be readily reciproca-ted up and down by the operator to deliver la stream or spray through a discharge hose terminating in a suitable nozzle. Pumps of this type have been found Very useful for combatting incendiary bonbs, as well as for horticultural spraying.

Our invention is concerned particularly with the formation cf the bracket and its attachment to the barrel, and the provision bywhich such bracket carries the nipple for the discharge hose, the primary object of the invention being to provide a very rm bracket effectively secured to the pump barrel.

Another feature of our invention is concerned with securing the upright of the bracket to the base thereof. An extended base provides means whereby the operator may place both feet on the bracket to hold it iirmly on the ground, while the means for securing the upright to the base enables such parts to be separated for convenient shipping but rigidly held together in use.

Various advantages of our construction will be apparent from the following detailed description of a preferred embodiment shown in the drawings.`

In the drawings. Fig. l is a vertical section of the pump and bracket, the plane of the section being indicated by the line l-l of Fig. 2; Fig. 2 is a trent elevation of the pump; Fig. 3 is a horizontal section in the plane indicated by the line l-l on l; Fig. l is a perspective of diferent members of the bracket detached from each other; Fig. 5 is a vertical section of the lower portion of the pump barrel and the plunger therein; 5 is a bottom plan of the pump; Fig. 'l is a detail of a modication having a different means for securing the upright of the bracket to its base.

As shown in Figs. 2 and 5, El) indicates the pump barrel adapted to receive water at its lower end past a check valve 2e. Within the barrel is a vertically reciprocable plunger 3d, to the upper end of which is secured a handle i0 by which the plunger is reciprocated. The details of these pump parts will be hereinafter described.

bracket of invention comprises a base upright risng from the base 'and n barrel engaging block 85 carried by a bent-over tcp portion of the upright. The base is preferably a sheet metal platform stiffened by crossing pressed-in ribs 52 and has a down-turned edge flange 53. The upright is channel-shaped in cross section, as shown in Figs. 1 and 4 and has its lower end abutting and secured to the base. As shown in Fig. 4, the web Si of the upright is provided at its lower end with a downwardly eX- tended tongue t2 and each of the flanges 63 with a tongue Bft. These tongues extend through openings 55 and 56 in the base. After insertion the lower ends of the tongues may be bent transversely as shown in Figs. 1 and 2 to lock the tongues to the base.

The member of the bracket which embraces the pump barrel is the block $5 which lies between the ilanges 63 of a horizontally turnedover top portion of the upright. The web 6l is cut away in this region so that the top of the block 65 may be flush with the top of the web. This block is welded in place, to the flanges and web.

The block 65 has a vertical cylindrical opening 65S through it by which it snugly compresses the barrel il) of the pump and the block and barrel are eectively secured together by welding. Thus the upright of the bracket and the barrel of the pump constitute a single rigid unit.

The block 65 also has a transverse opening El which communicates with the opening 55. This transverse opening is threaded and receives the threaded extension of a nipple 1i! to which the discharge hose is secured. There is an opening through the pump barrel It in registration with the opening El so that the nipple communicates with the interior of the barrel,

The nipple 79 is roughened or corrugated on its exterior for tight attachment of a discharge hose l5 thereon which hose may be clamped about the nipple by a suitable band 16. rIhe hose is provided at its free end with a suitable nozzle 'i8 preferably of the type which may be readily changed to deliver either a spray or a solid stream as desired.

The handle l on the plunger 3@ is preferably made large so as to accommodate both hands of the operator. Accordingly, if the nozzle is manipulated by another person, the operator standing with both feet on a platform 52 may use both hands on the handle of a plunger and readily eiect a vigorous pumping action. As shown in Fig. l, the plunger which is hollow has a plug 3l at its upper end with a screw threaded extension 32 rising therefrom. The handle is of the spade type, the bail thereof comprising a channel member "al between the upright arms of which is tached to the pump. Thus the operator may stand with one or both feet on the platform and by his weight to retain the pump in vertical position with its lower end projecting into thesource of supply, indicated in Fig. 1, as a bucket A,and

may employ both of his hands on the handle.

The bending of the tongues -62 4amd64 'to secure the upright to the base may be readily efiecte'd by blows of a hammer after the partsarebrou'ght together and hence it is quite feasible in shipping to have the base separate from the upright oF the bracket, the parts being joined at destination. In place of bending transversely the tongues 32 and S4 on the upright of the bracket to secure it Vto the base, we may provide the construction illustrated in Fig. "7. In this modification, we have welded atransverse clip Bt between the anges 63 of the upright, and Iprovide a wing bolt 82 adapted to pass upwardly through the platform of the base, through an opening -in the clip, into a nut 83 on the clip. The tightening of the wing bolt holds the upright down tight onto the base while the projecting -tongues prevent shifting of the upright on the base, so that in thiscase .it is unnecessary to bend the tongues transversely thereof after the upright and base v are assembled. The wings ofthe wingnut do not extend-down as far-'as theflange of the base and are thus entirely out of the way beneath the A platform-of the base.

We will-now describe the specic pump shown in Figs. 1 -and 5. As heretofore stated, the intake into the lower end -of the pump barrel is controlled by a check valve 29. This check valve `may comprise a ball seating over an opening 2l ina fitting'scre'w threaded into the `lower end 'of the fbarrel -a'nd -having an enlargement above the opening to vprovide `a seat for the ball. 'Ihe upward movement of the ball is limited by a transverse pin 21|.4

The tting 22 has a reduced downward extension 26 which is embraced by 'central tubular flange of a Yfoot -member 21. This member has a downward lflange 2-3 at its outer edge with an internal shoulder therein. Bearing uagainst this shoulder on the underside thereof and lheld in place `by welding -is a transverse screen 28. This prevents improper matter `passing into the `pump barrel on the suction stroke of the pump.

VAs shown, the plunger 30 is a hollow tube closed at its Aupper end by the plug 3|. At 4its lower end 4the plunger carries a head 33 engaging the inner wallof Vthe barrel. This'head has Van axial opening 34 in its bottom portion which may be closed by an internal -ball 35. l.Above the lball there is anppening 35 into the annular space between the plunger `andrbarrel. This opening is preferably made by partially severing a portion of vthe plunger with a U-shaped slit and turning the severed portion inwardly in the `form of .a tongue 31, as shown in Fig. 5. This tongue for-ms anupward stop for the ball 35.

A stuing box .'i5 on the upper end of the blarrel llLhaving the. usual packing nut, prevents leakage ofwater betweenvthe plunger and barrel. A thick rubber washer 38 preferably surrounds the ,plunger just under the handle and by abutting Athe top of the .stung box on the dOWIlstroke of the plunger makes a cushioned abutment. The plunger is provided with a collar 39 to engage the underside of the stuffing box on the upstroke of the plunger and limits its movement in that direction.

As is usual in this type of pump the construction shown is double acting, being a displacement pump on the downstroke and a lift pump on the upstroke. That is to say, on the upstroke the bal1 35 closes the opening in the plunger, a vacuum is created beneath it and water is drawn -by suction past the check valve Ztl into the barrel. On the downstroke this water is displaced through the opening 34 into the interior of the barrel against the air in the upper portion 'thereof (which is therebycompressed) and also ows through the opening 36 into the annular 'space between the plunger and barrel. against the air which is compressed in the upper portion of the barrel. On the succeeding upstroke the water in the annular space is lifted by the head on the plunger. Thus on either stroke the water passes a continuous stream out through the discharge vnipple and the discharge hose I5 to the controlling nozzle.

To prevent accidental distortion of that portion of the barrel in which the plunger head 30 operates, -I provide a rubber sleeve 9G embracing the rbarrel and adhering to it from the foot member '27 to the block 65 of the bracket.

We claim:

l. In a stirrup pump, the combination with a pump barrel and plunger of ra bracket comprising a base and an upright adapted vto be rigidly 'securedv thereto, the upright being bent Vover atV the top into a substantially horizontal portion which is permanently and rigidly attached to the barrel, and a discharge nipple carried by the vhorizontal portion of the upright and communicating .with vthe interior 'of the barrel.

A2. 'In a v'sti-rrup pump, the combination with a puin-p barrel or .a vbracket comprising a sheet metal base and a 'ilangedshee't metal upright eX- tendinggf'therefrom and bent over at the topand a 'block embracing the barrel and permanently attached Vto it and to a ange of the upright.

3. In a stirrup pump, the combination with a pump barrel of a bracket having a base and an upright portion, the upright portion being bent over 'at the top into a substantially horizontal extension, a block surrounding the barrel and attached thereto, said block being welded to the horizontal extension ofthe bracket, and a discharge nipple -mounted in the block yin registration with an opening in the barrel. i

4. In Aa stirru-p pump, the combination with a pump barrel of a bracket comprising a base and an rupright in the form of a channel beam, said upright being bent over at the top into-a substantially horizontal 'extension with its anges lying in vertical planes, a block mounted in the space between 'the flanges of 'the horizontal extension of the channel, and Welded to such anges, said block having avertical hole through it occupied by the pump barrel. y

5. In a stirrup pump, the combination with a pump barrel `of a, bracket having e, base and a anged 'metal upright adapted to be secured thereto, said vupright being Vbent over at the tcp and secured `to the barrel, the base comprising a horizontalplatf'orrn with downward flanges at opposite edges adapted to engage the hoor and firmly Support the Vplatform thereon, the upright abutting the top of the platform adjacent that edge thereof which is nearest to the barrel.

6. In a stirrup pump, the combination of a pump barrel, a bracket for holding the pump barrel comprising a base presenting an extended horizontal platform, a flanged upright abutting the top of the platform, said upright having tongues at the lower end passing through openings in the platform of the base, the upper end of the upright being adapted to be attached to the barrel of the pump.

'7. In a, stirrup pump, the combination of a pump barrel, a bracket for holding the pump barrel comprising a sheet metal base downwardly anged at its edges, a channel-shaped upright having tongues at the loWer end passing through openings in the platform 0f the base, the upper end of the upright being adapted to be attached to the barrel of the pump, the tongues which pass through the base being bent laterally to lock the upright to the base.

8. In a, stirrup pump, the combination `of a pump barrel, a bracket for holding the pumpbarrel comprising a base, a channel-shaped upright having its upper end formed for attachment to the barrel of the pump, a transverse clip secured to the anges of the upright a short distance above the base, and a bolt passing through the base and engaging a nut to lock the upright removably to the base.

9. In a stirrup pump, the combination of a pump barrel and a bracket for holding such barrel comprising a base and a channel-shaped upright, the upper portion of the upright being bent to present a substantially horizontal web and downwardly extending flanges in Vertical planes, said web being cut away adjacent the end of the flanges, a block occupying the out away portion of the web and substantially lling the space between the anges and welded thereto, said block having an opening t0 embrace the pump barrel and a communicating opening to receive a discharge nipple.

10. A stirrup pump comprising a flat base downwardly flanged at opposite edges, and an upright comprising a single integral bar secured to the base adjacent one edge thereof, the upper portion of the bar being bent to present substantially horizontal web and flanges lying in vertical planes, a block between the flanges and rigidly secured thereto, said block having an opening, a pump barrel extending through said opening in the block, a discharge nipple mounted in the block in communication with the interior of the pump barrel.

DANIEL KELLEHER. HERMAN J. TROCHE.

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