US1498364A

US1498364A - Dispensing-pump mechanism

Info

Publication number: US1498364A
Application number: US573889A
Authority: US
Inventors: Frank B Eilers; Fries Nestor
Original assignee: Tokheim Oil Tank & Pump Co
Current assignee: Tokheim Oil Tank & Pump Co; TOKHEIM OIL TANK AND PUMP Co
Priority date: 1922-07-10
Filing date: 1922-07-10
Publication date: 1924-06-17
Anticipated expiration: 1941-06-17

Description

F. Br EILERS ET AL DISPENSING PUMP MECHANISM June 17, 1924.

Fiied July 10,1

922 2 Shgets-Sheet 1 //IIr I IIII I7I/IIII IIIIVI/ llllllflrlf June 17, 1924.

F. B/EILERS ET AL DISPENSING PUMP MECHANISM Filed July '10 1922 2 Sheets-Sheet 2 m wmr Patented June 17, 1924.

Nrrao s'r FRANK B. EILERS AND NESTOR FRIES, OF FORT WAYNE, INDIANA, ASSIGNOBS TOKHEIM OIL TANK AND BUMP COMPANY, A CORPORATION OF INDIANA.

DISPENSING-PUMP MECHANISM.

Application filed July 10, 1922. Serial No. 573,889.

To all whom it may concern Be it known that we, FRANK B. EILERS and NnsToR FRIES, citizens of the United States of America, and residents of Fort iVayne, in the county of Allen and State of Indiana, have invented certain new and useful Improvements in Dispensing-Pump Mechanism, of which the following is a specification.

This invention relates to improvements in dispensing pump mechanism, and the objects thereof are: first, to provide a simple mechanism for actuating a reciprocal pump member selectively in opposite directions at different speeds under control of an operat-. ing crank; and second, to provide an externally operable enclosed stop mechanism for limiting the discharge stroke of the pump member selectively at diflerent stages and to provide also an indicating means therefor.

These objects are accomplished by the construction illustrated in the accompanying drawings in which Fig. 1 is a fragmentary elevation of a pump stand in section and including actuating mechanism for the reciprocatingpump member and for adjusting the stop mechanism.

Fig. 2 is an elevation projectedfrom Fig. 1, a portion being broken away to disclose the stop mechanism;

Fig. 3 is a detail view showing a cross section of the pump member and the stops therefor on the line -3 of Fig. 2; i

Fig. 1 is a front :elevation of the upper portion of the pump stand upon an enlarged scale, with portions broken away;

Fig. 5 is an enlarged detail view showing a cross-section of the stops on the line 5 of Fig. 2; and

Fig. 6 is a fragmentary elevation projected from Fig.5.

The characters appearing in the description refer to parts shown in the drawings and designated thereon by corresponding characters:

The invention comprises a hollow pump stand 1 having therein a reciprocal pump member 2 consisting of a rack of the type ordinarily used for actuating a pump. In

the upper part ofthe stand is contained a back earingconsisting of a shaft 3 having a pinlon 4 and toothed wheel 5 fixed thereon,

the pinion having operable relation with the rack.- Also,- in the stand is arranged a and longitudinal movement in the bearings 7 and 8. Upon the crank-shaft are loosely mounted two clutch-actuated gears, 9" and 10, that have constant meshing engagement respectively with the rack 2 and the toothed wheel 5. The clutch gears are spaced apart and positioned with their toothed ends "oppositely disposed. The gear '9 has a groove 11 in its hub into which extends a fixed plate 12 which prevents longitudinal movement of the gear, and the gear 10 has a flange 13 that projects over the side of the wheel 5 and serves to prevent the gear 10 from having longitudinal movement.

Upon the crank-shaft, between the clutch gears, is fixed a clutch'member 14: that is adapted to selectively engage the clutch gears 9 andlO accordingly as the crankshaft 6 is longitudinally positioned so that said gears maybe severally actuated when the crank-shaft is rotated. The ends of the clutch member 14 and the ends of the respective clutch gears adjacent thereto are sawtoothed, the slant of the teeth on said member and gears being such that when either gear is engaged by said member movement i may be imparted thereto by rotating the crank-shaft in one direction, and so that said member will becomedisengaged and inoperative when the crank-shaft is oppositely rotated. For instance: When the crankshaft is pushed in and turned clockwise, the

member 14; when the crank-shaft is pulled outwardly and turned clockwise the gear 10 will become engaged and driven by said clutch member; and when the crank-shaft is rotated backwardly the clutch member will idlyrotate with the crank-shaft, out of engagement with the gears.

Within the stand is a shaft 15 rotatably 'mounted in a position parallel with and adcrank-shaft 6 adapted to have both rotary gear 9 will be engaged and driven by the Jim from'in parallel relation with the shaft 1-5. The stops var in length and each is provided with a Xed nut 23 by which it may be adj'ustably turned in the flange.

Guides 24c are provided on the shaft for holding the stops in proper order. notched collar 25 is mounted on the shaft 15 and is vertically movable thereon and adapted to engage the nut 23 of each stop and thereby prevent the stops from being turned in the flange 17. The collar has a set screw 26 for securing it in place on the shaft and the stand has a sealed door 27 adjacent the collar, which, when opened admits of malt; ,i ng readjustments of the stops. By turning the shaft 15 upon its axis the stops may be severally positioned into the path of a lug 28 that projects from the rack '2 near its lower end, so that the upward stroke of the rack is thereby limited more or less accordingly,

In the lower .part ofthe stand is a casing 29 having a glazed sight opening 30 and containing a rotatable flange 31 which is mounted upon a shaft 32 that extends centrally through the casing. The shaft has upon its front end exterior of the casing, an operating lever 33, and upon its inner end a miterzgear 3ithat meshes with a similar miter gear 35 which is fixed'up on avertical spindle 36 in the stand. The lower end of the shaft 15 is operatively connected with the spindle 36 by means of a sleeve 37 so that as the spindle is turned the shaft will be likewise turned and the stops thereby moved accordingly into the path of the lug 28 on the rack. In the casing is a spring-pressed detent pin 38 that bears against the rear face of the flange 31, the flange being notched to receive the detent member 38 so as to be fricti on'ally held in adjusted positions to which it is turned by manipulating the operating lever Upon thedisk are displayed characters '39 that are brought successively into position at the sight opening in the casing, which characters are significant of the respective stops, the particular character appearing at the sight opening being significant of the par ticular stop that is positioned for engagement by the lug on the rack. Each character is also significant of the quantity of liquid that is dispensed upon-anoperation of the pump member under the limitation of the corresponding stop.

In utilizing the invention the rack is connected up with the plunger of a disip-lacement pump (notshown) of the recipro cal type adapted to deliver liquid in varying quantities according to the extent of anovement'of its plunger'as in the usual practice and the various stops are turned in the flange to 'efiect respective adjustments thereof so that the rack will be accordingly limited at corresponding stages of its stroke,

and thus insure accuracy of the various quantities of liquid to be discharged by the pump. The notched collar is then slid upwardly upon the shaft 15 so as to engage all of the nuts on the stops, and is secured in engaging position by tightening the setscrew and closing the door. In operating the invention, the lever 33 is turned until the character on the dial that is significant of the quantity of liquid desired appears the sight opening. For instance: in an apparatus having a five gallon capacity, the full stroke of the pump member being 'required, the lever is turned so that the stop 18 is positioned in the path of the lug on the rack, which admits the full stroke of the pump; or, if a lesser quantity is required, the lever is turned to such position as to bring the desired stop into the path of the lug according to the quantity of liquid desired. The crank-shaft is then drawn outwardly and rotated, clockwise, causing the clutch member to engage and drive the clutch-gear 10, thus imparting upward movement to the rack through the medium of the back gearing until the movement of the rack is interrupted by the stop mechanism. The crank-shaft is then pushed inwardly and turned, clockwise, so that the clutch member is moved from engagement with the clutch gear 10 and into actuating engagement with the clutch gear 9 and cansing downward movement on the return stroke of the rack. As the action of the clutch gear 9 is with the same velocity as the crank-shaft, the downward movement of the rack is comparatively faster than its upward movement which is effected through the medium of the back gearing with the incidental additional leverage that is necessary in effecting the upward or discharge stroke of the pump which usually requires greater force than the returning stroke. in this manner the physical force applied to the crank-shaft during the upward and downward strokes of the pump member is more nearly uniform while the return stroke thereof is accelerated.

What we claim is a 1. In dispensing vpump mechanism including a closed stand and rack-bar movable therein and gearing for actuating the rackbar, a rotatable shaft arranged in the stand (parallel with the rack-bar; a flange member fixed on the shaft; a series of stop rods arranged in a concentricseries around said shaft, each rod having threaded. relation in the flange member thereon, said rods differing in length and being adapted to have engagement With the rack-bar selectively accordingly as said shaft is adjustably turned;

guides on said shaft for said rods; means adapted to have sealed adjustment on said shaft and locking engagement with said stops collectively; and means operable from rotatable shaft arranged in the stand parallel with the rack-bar; a flange member fixed on the shaft; a series of stop rods arranged in a concentric series around said shaft, each rod having threaded relation in the flange member thereon, said rods difiering in length and being adapted to have engagement with the rack-bar selectively accordingly as said shaft is adjustably turned; guides on said shaft for said rods; and means adapted to have sealed adjustment on said shaft and locking engagement With said stops collectively.

In dispensing pump mechanism including a stand and rack-bar movable therein and gearing for actuating the rack-bar, a rotatable shaft arranged in the stand parallel With the rack-bar; a flange member fixed on the shaft; and a series of stop rods arranged in a concentric series around said shaft, each rod having threaded relation in the flange member thereon, said rods differing in length and being adapted to have engagement with the rack-bar selectively accordingly as said shaft is adjustably turned.

4. In dispensing pump mechanism includ ing a closed stand and rack-bar movable therein and actuating mechanism for thev rack-bar; a stop mechanism within the stand comprising a shaft arranged parallel With the rack-bar; a flange member fixed on the shaft; a series of stop rods arranged in a concentric series around said shaft, each rod having a fixed nut thereon and'threaded relation in said flange member, said rods differing in length and being adapted to have engagement With the rack bar selectively accordingly as said shaft is adj ustahly turned; sealing means for securing said nuts collectively; and means operable from the exterior of the stand for turning said shaft.

In testimony whereof We aflix our signatures in presence of two Witnesses.

FRANK B. EILERS. NESTOR FRIES.

Witnesses:

MATILDA Mn'rrnnn, W. G. Bonus.