US 1574887 A
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Description (OCR text may contain errors)
March 2 1926.' 1,574,887
- s. HINDS 'PUMP Filed Jan. 28, 1921 Patented Mar. 2, 1925.
f UNITED STATES PATENT; OFFICE;
SHERWOOD HINDS, OF CHICAGO, ILLINOS, ASSIGNOR TO ST. LOUIS PUMP & EQUIPn MENT CCMPANY, OF ST, LOUIS, MISSOURI, A CORPORATON OF MISSOURI.
Application filed January 28,1921.
'/'0 all whom it may concern.'
le it known that I, Srmnwoon HiNDs, a citizen of the United States, and a resident of Chicago, county of Cook, State of Illinois, have invented an Improvement in Pumps, of which vthe following is a specification.
This invention relates to mechanical ap paratus, and with regard to certain more specific features, to liquid-handling devices.
Among the several objects ofthe inven tion may be noted the provision of a simple and'di'irable vpump for liquids such as oil or gasoline; the provision of compact and accurate apparatus to determine the quantity of liquid passing therethrough; and the provision of a measuring pump of few parts, not liable to derangement during severe service conditions, and easily disassembled for inspection-or repair. Other objects will be in part obvious and in partl pointed out hereinafter.
The invention accordingly comprises the features of construction, combinations of elements, and arrangements of parts, which are exemplified in the construction hereinafter described and a scope of the application of which will be indicated in the following claims.
ln the accompanying drawings, in which areshown one of various possible embodiments of this invention,
Fig. 1 is a front elevation;
Fig. 2 is a transverse vertical section on the yline 2 2 of Fig. 1. I
Similar reference characters indicate the corresponding parts throughout the several views of the drawings.
Referring now to the accompanying draw# ings, there is illustrated a. base comprising a cylinder 1 in which is mounted a reciprocatlng plunger 3 (Fig. 2) comprising an an nular crib 5 threaded uponI the rod 7 and' grooved to receive a spiral spring 9 that tends to expand radially of the crib, there-- by to forceoutwardly against the inner wall of the cylinder the annular member 11 of leather or other flexible material, which preserves a tight lit between-plunger andV cylinder, at'- least duringthe upward or working stroke. Within the annular crib is threaded a'sleeve 13 having av spider provided withy a centraly bearing extending axiilly of the cylinder and concentric there-j with, tosupport the sliding stem l5' of Serial No. 440,796.
valve 17. `The latter remains closed kduring the upward or working stroke, and rises with respect to the crib and sleeve on the downward stroke, thereby acting as a checl. valve. A ring or washer-19 is located im mediately beneath the horizontal part of the flexible member 11 toliold the latter in position, and is itself retained in place by the flange 21 on the sleeve.
Beneath the cylinderl per se is an annular casting 23 that supports and also houses annular, with a horizontal upper surface 3l.-
that is perforated at three places. The cen tral perforation is for the rod 7 and its bearing 33 (Fig. 2). The front perforation (at thevleft infFig. communicates with the expansion chamber 35 in the hollow front leg 37L of the bracket or casing or housing 39 that` supportsfand encloses a number of the elements in the upper part of the apparatus. The rearvperforation (at the right in Fig. 2) communicates with the discharge chamber 41 in the hollow rear leg 43 of the #bracket 39. The upper surface 31 of the upper casting 27 is also `extended outwardly beyond the annular portion of the casting and is perforated to receive the bolts or screws 45 by which it may be secured to a suitable support such as the top of a tank49 in which all parts of the apparatus beneath this level are enclosed. i
The lowercasting. 23 has threaded y'into it a vertical pipe 51 which at its lower end is threaded into astrainer 53.
tially flush with the lowermost portion of the strainer. In service, when'thefappara-l tusis so mounted that its base, that is, all partsbeneath the plate 31, are Wtlrina tank,
p The latter. 'ares outwardly from its upper portion 55 corresponding to a discharge of one quart of liquid from the apparatus. The midd-le quantity stop is at this time to the right (Fig. 41) of the rearward position.
lVlien the quantity handle 121 is in its right-hand position, corresponding to the legend 2 Qt., theA middle quantity stop 95 ext-ends in a directly rearward direction so as to engage the lug 109 and stop the upward movement of the rack at the height corresponding to a discharge of two quarts of liquidV from the apparatus. The lower quantity stop is at this time to the left of the rearward position and thus does not stop the upward movement of the rack.
lllhen the quantity handle 121 Vis in its middle position, corresponding to the legend 1 Gal., the parts are in position as follows: the middle quantity stop is to the right of the rearward position and the lower quantity stop 97 is to the left of the rearward position, so that neither of them engages the lug 109 or stops the upward movement of the rack.` The rack thus can be moved upward through its full stroke, until its lug is engaged by the upper quantity stop 93 which occurs at the height corresponding to the discharge of one gallon of liquid from the apparatus. j
It is obvious that more or less than two intermediate fractional quantity stops may be provided, as desired, the selective engagement of the rack lug by one or the other of the intermediate stops being insured by having the several stops disposed at different angular displacements from the plane of the plate, as indicated above in connection with two such stops.
lVhen the oflicial in charge of setting or approving the setting of the quantity stops has adjusted the stops and locked them in their respective adjusted positions by means of the lock-nuts 107, the front plate is applied to the bracket, is secured thereto by screws 129, and then is sealed in position by suitable means such as are illustrated conventionally at 131. y
The lock 101, above mentioned, normally prevents the raising of the rack. The loch when in its lowermost or normal position as indicated in Fig. 2, the projection 139 at the rear of the sliding barrel 141 engages thel lug 109 on the rack and prevents the rack from being` raised from such position.
In order to raise the rack, the operator first inserts a key (not shown) in the keyhole 143 (Fig. 1) in the rotating part 145 of the lock. The insertion of the key operates the tumblers` which are not shown in detail as they form no feature per se of the present invention. The key is then turned clockwise from the locked position to the unlocked position. It is now possible to pull the barrel bodily toward the operator, through the distance sulicent to pull the projection 139 of theJ barrel out of the path of movement of the lug 109 on the rack, so
that the operator can now raise the rack byl turning the operating handle'85 in aclockwise direction.
As soon as the barrel has been pulled toward the operator to unlock the rack, the operator if he so wishes can return-the key to its initial position and withdraw it from the keyhole. VlVlien the operator has finished using the apparatus he simply pushes the lock barrel in until the lock is in its original condition.
- The lock is ata convenient height, and in a convenient position at the front of the apparatus, and by its operation directly upon an element integral with the rack it effectively prevents any unauthorized movement of the rack.
The totalizer 166 is of conventional form, with an overrunning clutch (not shown).
The rapparatus is substantially waterproof. The cap 133 secured to the top of the rack covers the rectangular aperture 87'in the top of the bracket, through which the rack passes. The apron 123 above mentioned covers the aperture in the front plate provided for the quantity handle. They lock 101 is normally flush with the outer surface of the bracket and is exposed only at its keyhole, which may be covered by the swinging plate 135 (Fig. 1) if desired. If' no lock is used, a disc (not shown) is snapped into the bearing 99 to close the aperture. The plunger rod bearing 33 protects the cylinder from moisture from without. And the other parts of the apparatus that are liable to derangement thrr;` igh moisture orl rust are all housed in the bracket.
From the above it will be seen that the several objects of the invention are realized, and other advantageous results attained.
As various possible embodiments might be made ofthe above inventions, and various changes might be made in the embodiment above set forth it is to be understood that all mater herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.
1. In apparatus of the class described, in combination, a cylinder having a piston adapted to reciprocate therein, a housing mounted on said cylinder comprising relatively front and rear hollow legs and a transverse arm connecting said legs, with front leg thereof forming an expansion chamber, and the rear leg extending above said expansion leg to form a discharge chamber, the connecting arm extending transversely at approximately the upper extremity of the front leg the yrear leg having an extension on the upper portion thereof, and a rack journaled in said-extension adapted toj reciprocate with said pistonv lill) 2. In apparatus of the class described, `in combination, a cylinder Ahavin-g a piston adapted to reciprocate therein, a housing mounted on said cylinder comprising relatively front and rear hollow legs and a transverse arm connecting-said legs, the front leg thereof forming an expansion chamber and the rear leg extending above said expansion leg to form a discharge chamber said rear leg-having a ytrz'insverse extension at its upper extremity, a rack journaled in said transverse extension adapted-to reciprocate with said piston, and a bearing mounted on said cylinder and extending upwardly into the open space between said legs.
In apparatus of the class described, in combination, a cylinder having a piston adapted to reciprocate therein, a housing mounted on said cylinder comprising rela tively front ,and rear hollow legs and a tra-nsverse arm connecting said legs, lthe fron-t leg thereof forming an expansion chamber,l and the rear leg extending above said expansion leg to form a discharge chamber said rear leg having a transverse extension on its upper portion, a rack and operating means therefor journaled in the upper extremity oit' the rear leg said rack adapted to rec'iprd cate with said piston, anda lock directly engaging the rack and normally preventing movement of the rack from the normal posi tion of the latter.
4. In apparatus of the class described, in combination, a cylinder having a piston adapted to reciprocate therein, a housing mounted on said cylinder comprising relatively front and rear hollow legs and a transverse arm connecting said legs, the front leg thereof forming" an expansionchamber and the rear leg extending above said expansion leg` to vform a discharge chamber, the connecting arm rextending transversely at approxi-mately thc upper extremity of the front 'leg said rear leg having an extension on its upper extremity, and a rack journaled in the upper extension adapted to reciprocate with said piston, and means for straining the liquid ente-ring said cylinder.
In appara-tus of the class described, in combinati-on, a cylinder havin-g a piston adapted to reciprocate therein, a housing mounted on said cylinder comprising relatively front and rear hollow legs and a transverse arm connecting said legs, the front leg thereof forming an expansion chamber an-d the rear leg extending above said expansion leg to form a discharge chamber said rear leg having a transverse portion extendingfrom the upper extremity, a rack journaled .in said transverse portion of the rear leg 'adapted to reciprocate with said piston, a bearing mounted on said cylinder and extending upwardly into the open space between said legs, a loclr directly engaging the rack and normally preventing movement of the rack from the normal position of the latter, and means 'for straining the liquid entering said cylinder.
6. In apparatus of the class described, in combination, a cylinder having a piston adapted to reciprocate therein, a housing mounted '.on said cylinder comprising relatively ro'nt and rear hollow legs and a transverse 4arm connecting said legs and .being integral therewith, the rear leg extending above said lfront leg to form a discharge chamberand having a transverse extension at its upper extremity, and a rack and operating means .therefor mounted in said transverse extension on the rear leg.
In testimony whereof, I have signed my name to this specifica-tion this 26th day of January, 1921.