US1345837A - Liquid-dispensing apparatus - Google Patents

Description

1. B. DAVIS.

LIQUID DISPENSING APPARATUS.

APPLICATION men AUG-4. 1919.

1,345,837. P fld ly 6, 1920.

2 0 h\ MA A x 17 y 115 My NVENTOR 1% (MihZ; 1. hhhh m; rm A. J 41 2 J ATTORNEYS.

1. B. DAVIS.

LIQUID DISPENSHVG APPARATUS,

APPLICATION FILED AUG-4. m9.

Patented July 6, 1920.

2 SHEETS-SHEET 2.

I NVENTOR ATTORNEY-5.

UNITED STATES PATENT orrlce.

JOHN B. DAVIS, OF SPRINGFIELD. MASSACHUSETTS, ASSIGNOR TO GILBERT& BARKER MANUFACTURING COMPANY, OF WE$T SPRINGFIELD, MASSACHUSETTS, A COR- PORATION OF MASSACHUSETTS.

LIQUID-DiSPENSING APPARATUS.

Application flied August 4, 1919.

T 0 all whom it may concern: I

Be it known that 1, JOHN B. DAVIS, a citizen of the United States of America, residing at Springfield, in the county of Hampden and State of Massachusetts, have in 'vented certain new and useful improve- Another object of the invention is to provide in combination with a pump cylinder, its associated measuring cylinder, and a member connecting them, a pump operating means including a piston rod reciprocable in both pump and measuring cylinders and an actuating shaft for the piston rod extending transversely through such mem her and provided'with stuffing boxes to prevent leakage, together with a valve carried b the piston rod to. close the lower end of t e measuring cylinder, when the pump is not in use.

Another object of the invention is to provide in a dispensing apparatus of the class described, means to drain themeasuring cylinder when the apparatus is not in use.

A further object of the invention is to arrange the pump actuating means and draining means so that they can be locked together and so that, in order to lock them together, the draining means will have to he first, actuated to drain the measuring cylinder. y

A further object of the invention is to provide in an apparatus of the class described generally simplified and improved mechanical structure.

Other objects and advantages will appear :u the following description and in the illustrative embodiment of the invention in the accompanying drawings, in which-- Figure 1 is an elevational view, partly in section, of a liquid dispensing apparatus embodying the invention;

Specification of Letters Patent.

Patented July 6, 1920.

Serial No. 315,210.

Fi 2 is a sectional plan view taken on the line 2-2 of Fig. 1;

Fig. 3 is an enlarged. fragmentary .lde elevational view illustrative of the actuat mg mechanism l ig 4 is a fragmentary sectional plan view 1llustrative o the interengagement of the operating lever and drain valve lever to effect a. draining of the measuring cylinder;

Fig. 5 is a sectional view taken on the line 5-5 of Fig. 1;

Fig. 6 is an enlarged sectional elevational view of the upper part of the apparatus;

Fig. 7 is an enlarged fragmentary view of an automatic air inlet valve associated wigh the discharge pipe of e apparatus; an

Fig. 8 is a fragmentary elevational view of the apparatus taken from the right hand side of Fig. 1.

Referring to these drawings; C represents the cylinder of suitable reciprocating piston pump and, within cylinder C, a piston p is reciproca-hle such piston being preferably weighted as :it w, to permit it to descend by gravity, when released, as will appear. The lower end of cylinder C is closed by a base 71 except for its connection with the inlet pipe o. A suction operated valve 11 controls the communication between pipe a and cylinder U, opening on an upstroke and closing on a downstroke of piston in the usual manner: Piston p is provi ed with the usual valve 1), which opens on a downstroke and closes on an upstroke of the piston p. The upper end of cylinder C is capped by a hollow member 10 which has an opening 11 extending vertically therethrough and communicating with cylinder C at all times! Preferabl cylinder C is incased by a pedestal P am such pedestal is arranged to support the member 10, alias illustrated.

Mounted on the top of member 10, with its axis vertically in line with that of cylinder U, is a measuring 0 linder 12, which may communicate, and (085 except at certain times as will appear, with the opening 11. This cylinder 12 is provided with a plurality of equally spaced vertical slots or openings 13, and the walls of the cylinder are recessed around the openings tourec eive plates la of glass or other suitable transparent material. A strip 15, secured to the walls of cylinder 12, overlaps each glass 14 and holds it in its recess. "bus, the interior of the pump is visible from all sides through the several windows ust described.

The top of cylinder 12 is closed by a cap 16, which, as shown in Fig. 6, has a curved passage 17 for the discharge of fluid from cylinder 12. Upon the cap 16, a bracket 18 is mounted and upon the bracket a discharge register, indicated conventionally at 19, may be mounted, if desired.

The piston rod 1' of iston p extends vertically upward and is rec to pass upwardly into the measuring cylinder 12. -As shown, the piston rod is substantially circular (Fig. 2) and is slidable through, and guided by, a vertical opening provided in a cross-bar 20, formed integrally with member 10 and brid ing across, but not closing, the passage 11. eeth 21 are cut in rod 1* to form a rack with which a pinion 22 is in mesh. Pinion 22 is fixed to a shaft 23, which passes transversely through the member 10 and across bar 20, and is supported by roller bearings 24 (Fig. 2) one on each sideof pinion 22. The shaft 23 extends beyond both sides of member 11. and possible leakage of liquid from the pump thercthrough is prevented by stuffing boxes, indicated generally by rcference numeral 25. Near one end of shaft 23 is fixed a clutch element 26 and, beyond such element and freely rotatable on shaft 23, is an operating handle 27, which is provided with a clutch element 28 to mate with the element 26. A collar 29 on the end of shaft 23 prevents removal of handle 27 therefrom. In order to releasably hold handle 27 in such position that the clutch elements 26 and 28 are engaged. a spring pressed ball 30 is provided in handle 27 to engage in a cir ruinferential groove 31 in shaft 23 and a second like groove 32 is provided with which ball 3 may engage to hold ban 19 27 in such position that the clutch elements 26 and 28 are disengaged.

If desired. a total register, of the familiar cyclmnetcr type and illustrated at m in Fig. 2. may be mounted on member 10 by means of a bracket 33 and driven from shaft 23. Such register is preferably housed in by a casing 34, which completely encompasses the register m and the end of shaft 23 and slips over a round boss 35 on member 10. An ear 36 is provided on casing 34 and a like car 37 is provided on member 10 (see Fig. 8). Both ears have openings, as 38, which are adapted to register for the purpose of receiving a padlock whereby the casing 34 may be locked in lace. n the upper end of piston rod 1' is a disk 39 from which a series, as four, of equally spaced markers 40 extend radially outward to positions closely adjacent the glass plates 14. A suitably graduated scale 41 is provided adjacent each of such plates, there being pointers 42 which overlie the plates 14 in c osely adg'acent relation. With the pieton (p in its ower position, the n'iarkers 40 are isposed in the same horizontal plane as the lower set of pointers 42 and, when the piston 17 is raised, the markers 40 indicate on the scale 41fthe displacement of liquid from oylinder'12, in suitable units, such as gullons for example.

In normal operation, the cylinder 12, the passage 11, and that portion of cylinder above iston p are completely filled with liquid. .t will be seen, from inspection of Figs. 1 and 2, that there is opportunity for liquid to pass downwardly around the piston rod 1' into the opening in cross-bar 20 in which shaft 23 is mounted and that liquid thus m' ht travel along the shaft and es cape. or this reason, the stufiing boxes 25 have been provided. In order to avoid any material fluid pressure on such stufiing boxes, as by the head of liquid in cylinder 12. there is provided on piston r0 1 a valve disk 43, which, when piston 10 is in its lower position, engages a seat 44 on the top face of member 10, and thus takes the weight of the liquid thereabove and prevents the creation ofundue fluid pressure over any appreciable time interval, as when the pump is not in operation and the cylinder 12 is not drained as hereinafter provided for.

For draining the cylinder 12, there is pro vided in member 10, a horizontal passage 4}) (Fig. 2) which alincs with a chamber 46 provided on an exterior face of member 11). A valve disk 47, having a stem 48, is net" mally held by a spring 49 in such position as to close off communication between passage 45 and chamber 46. Fixed on the outer end of stem 48 is an arm 50, the outer end of which is wedge shaped, as at 51., and at the large end of such wedge shaped end is a lug 52. Fixed on the inner surface of handle 27 is a staple 53, the cross-bar por- 110 tion of which is located substantially in the same vertical plane as the point of the surface 51, when handle 27 is so positioned that clutch elements 26 and 28 are engaged. Consequently, when arm 50 is turned toward 115 handle 27 slightly beyond the dotted line position shown in Fig. 3, and the handle 27 is turned clockwise through a small angle,

the pointed end of wedge 51 will engage between the sides of the staple and below the cross-bar thereof. Thus, a clockwise turn of handle 27 will cause the arm-50 and thus valve 47 to be moved outwardly, thereby connecting the passage 45 to chamber 46. A pipe 54 leads 'rom the latter downwardly through pedestal P to a suitable receptacle, such for example as the supply tank to which .the inlet pipe a may be connected. Thus. the contents of cylinder 12 may be completely drained and, it should be noted,

this can be accomplished only when the clutch elements 26 and 28 are engaged, whereby the slight turning of handle 27 necessary to open the drain valve 47, as ust 5 described, will also cause the valve 43 to be lifted from its seat l-l to allow the liquid to flow from cylinder 12 into passages 11 and 45.

It is to be noted that valve 47 opens outwardly and is held to its seat by. the spring 4!) under a predetermined pressure. (onsequently, when such pr ssure is exceeded, which might occur if the pump were operated while its outlet was closed, the valve l? 15 will act as a relief valve and open to prevent damage to the measuring cylinder.

In the outer portion of arm 50 there is an opening 55 torthe insertion of a padlock in such a position that both handle 23 and arm 5t) will be held against swinging movement. All owners of outdoor pumps wish, of course, to lock them against operation by unautl'iorized persons, and some locking means are therefore usually provided. The

26 feature of the present locking means is the utilization of the drain valve lever 50 as the part to which the handle 27 is locked. By this arrangement, the operator, in order to lock the handle 27, must first cause the 30 drain valve 47 and piston valve 43 to be opened, whereas otherwise he might well neglect to drain the cylinder. The draining of a cylinder having transparent walls or transparent portions, such as illustrated, is 85 desirable and generally required bynnsur- ,unee regulations and therefore any device which will insure that the operator conforms to such regulations, by utilizing the devices provided for that purpose, is important.

45 of the stufling box, there is threadedu on rod r a nut 58 which mav be adjnste to various positions and held in adjusted position by a check nut 59 (Fig. 1). Rod 56 has its lower end depending into cylinder 12 in position to be engaged and lifted by the upper end of pist ')I1 rod r. The abutment of nut 58 with the bracket 18 described will thus limit the stroke of the piston rod. The Iod.'5(i may be extended above bracket 18, as

illustrated, to actuate the register 19.

The discharge pipe 17 is preferably ada ted, as by the screw thread 60 (Fig. 6), or connection to thwusual flexible hose and, in order to provide for com lete drainage of 60 such hose, an'air inlet va ve device is provided. Such device consists of a casing 61, threaded into an opening in the wall of the discharge pipe 17 and having an inlet aper-' ture 62 for air. The casing 61 is otherwise Y e; closed-except for a passage 63 in its lower end. A valve 64 controls communication between passage 63 and pipe 17. hen the pressure in pipe 1? equals or exceeds at mospheric pressure, valve 64v is closed. Wl1en,'however, pumping ceases, the liquid in the flexible hose tends to flow tlleret'ron'i by gravity and creates a partial vacuum in the upper end of discharge pipe 17, whereby valve 6-1 is lifted by atmospheric pressure to admit air and permit the liquid to draii from the hose. i

The operation of the dispensing appa; ratus will largely appear fronrthe for-ego iug description. In the beginning, the pump is operated until all air is expelled therefrom and from passage 11 and cylinder l2. 'lhereafter, a movement of the piston 12, over distances measured by the markers 40 with relation to scale 41, will displace the quantities indicated thereon. At the end of each upstroke of piston 1, the handle 27 is pulled axially outward to disengage the clutch elements 526 and 28, whereupon the piston descends by gravity to its lower position. The descent of the piston, however. still leaves the cylinder 12 full of liquid and in order to drain it. the drain valve lever fill must be manipulated as already described.

The invention has been disclosed herein, in an embodiment at present preferred. For the purposes of illustration. but the scope of the invention is defined by the appended claims rather than by the foregoingvlcscri ition.

lVhat I claim is I 1. The combination with a reciprlu-atimg piston pump, of a measuring cylinder aliucd' therewith and having transparent portions, whereby its interior is visible, a member forming a continuation of the pump c vlin der to connect the latter to the measuring cylinder, and pump actuating mechanism mounted in said member and including a pinion within the member to reciprocate the piston rod of the pump. Q; In combination, hlined pump and visible measuring cylinders of substantially equal diameter, a member intermediate and connecting said cylinders and affording at all times a substantially unrestricted passage between the two, a pump piston and piston rod. and actuating mechanism therefor including a rotatable member within the first-named member to reciprocate the piston rod. t

3. In combination with a (pump, including its cylinder, piston an reciprorable piston a measuring cylinder ahov and alined with the pump cylinder. an intermediate member to connect the cylinders. a shaft passing transversely" into said memberfa pinion on the shaft to reciprocate the piston rod on rotation of the shaft. a stallmg box associated with the shaft and membe! to prevent leakage therebetween, and a 10 sage between the two, a. pump piston and iston rod, actuating mechanism therefor including a rotatable member within the first-named member to reciprocate the piston rod, and manually operable means to drain the measuring cylinder.

5. In. combination, a reciprocating piston pump, including an operating lever rotatable to reciprocate the pump piston, a measuring cylinder associated with the pump cylinder and through which the pump discharges, d 'aining means for the measuring cylinder including an operating lever. said levers being movable into iuterengaging positions to permit them to be locked, and

the last-fimmed lever being movable to uperate the draining means when moved into such position.

(3. ln combination, a reciprocating piston pump. including an operating lever rotatable to reciprocate the pump piston, a visible measuring cylinder associated with the pump cylinder and through which the pump discharges, draining means for the measuring cylinder. and IIPZIDS with whi h said lever may move into engagement and be locked. the last-named means being movable on such movement of said lever to operate said draining means.

7. In combination. a reciprocating piston pump. including an opc'ating lever rota table to reciprocate the pump piston, a visible measuring cylinder associated with the pump cylinder and through which the pump discharges. draining means for the measur- (g ing cylinder including an operating lever having a cam like clill cngagcalilc with and movable by the first-nanicd lever to actuate the draining means.

8. In combination. a reciprocating piston pump. including an operating lever rota table to reciprocate the pump piston, a visible measuring cylinder associated with the pump cylinder and through which the pump discharges, draining means for the measur- 35 ing cylinder including an operating lever. a

valve movable with the pump piston to close oil communication between the pump and measuring cylinders when the pump piston is in its lower position, and means provided on each lever to permit them to be moved into interengagement, the movement of the first lever into engagement with the second etl'ecting the opening of said valve and the corresponding movement of the second lever actuating'the draining means.

9. In combination, alined pump and visible measuring cylinders of substantially equal diameter, a member intermediate and connecting said cylinders and atl'ording at all times a substantially unrestricted passage between the two, a pump piston and piston rbd, actuating mechanism therefor including a rotatable member within the first-nan1ed member to reciprocate the pis ton rod, a scale associated with the measuring cylinder adjacent a transparent portion thereof, and a marker carried by the piston rod and extending adjacent said portion to cooperate with said scale to indicate the quantities displaced from the measuring cylinder.

10. In combination with a pump, a measuring cylinder including transparent and relatively fragile portions, said cylinder communicating with the pump and receiving the discharge therefrom, and an outwardly opening valve associated with said cylinder and yieldingly held in closed position, said valve being manuallymperable to drain said cylinder and automatically operable to relieve the pressure in said cylinder when such pressure exceeds a predetermined value.

11. In combination, alined pump and visible measuring cylinders of substantially equal diameter. a member intermediate and connecting said cylinders and affording at all times a substantially unrestricted passage between the two, a pump piston and piston rod, actuating inechansm therefor including a rotatable member within the first-named member to reciprocate the piston rod. and means manually operable to drain the measuring cylinder and automatically operable to relieve the pressure therein when such pressure exceeds a. predetermined value.

12. In con'ibination with a pump, including its cylinder, piston and reciprocable ,piston rod, a measuring cylinder communicating at its lower end with the pump cylinder to receive the discharge therefrom and delivering from its upper end. whereby said measuring cylinder is normally filled with fluid, and a valve operable by the piston rod to close off communication between said cylmders when the piston is in its lower position.

JOHN B. DAVIS.

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