US1918193A - Dispensing pump - Google Patents

Description

July 11, 1933. B. J. PEPPER 1,918,193

DISPENSING PUMP Filed March 17, 1933 2 Sheets-Sheet l Fig-44 35 INVENTOR.

y 1933- B. J. PEPPER 1,918,193

DISPENSING PUMP 2 Sheets-Sheet 2 Filed March 17, 1933 Q7 W INVENTOR.

BY M ATTORNEY.

Patented July 11, 1933 BYRON J'. PEPPER, OF FORT WAYNE, INDIANA, ASSIGNOR TO TOKHEIM OIL TAN K AND PUMP COMYANY, 0F FORT "WAYNE, INDIANA, A CORPORATION OF INDIANA DISPENSING PUMP Application filed March 17, 1933. Serial No. 661,297.

This invention relates to improvements in dispensing pumps of that class used for deliveringliquid from a storage tank in various predetermined definite quantities, and in which is provided adjustable mechanism for limiting the discharge stroke of the pump at various stages to thereby regulate accordingly the quantity of liquid delivered upon each operation'of the pump.

An object of the invention is to provide a compact measuring pump unit of simple construction and of economical manufacture, having adjustable stop mechanism for the pump which is readily operated and the stops for which are sealed to prevent unauthorized re-adjustment thereof.

Other objects and advantages of the invention will appear in the following description. l

An illustrative embodiment of the invention is shown in the accompanying drawings, in which Fig. 1 is a side elevation of a measuring pump unit in a preferred form of this invention 'Fig. 2 is a side elevation of the adjustable engaging member for the'stop mechanism of the pump unit;

Fig. 3 is a top plan view projected from Fig. 2;

Fig. 4 is a detail top plan view of an indicating collar for the engaging member;

5 is a side elevation projected from Fig. 4;

Figs. 6 and 7 are similar detail views showing a vertical section of the adjustable stop mechanism and rack bar for the pump, shown' respectively in different positions; and

Figs. 8 and 9 are similar top plan views projected respectively from Figs. 6 and 7, the sealing cover being in section.

The illustrative embodiment of the inven tion consists of a standard 1 having a-base 2 to which is pendent-1y secured a pump cyl inder 3 by any suitable means such as tie rods 4.' The pump cylinder 3 has a discharge pipe 5 that extends upwardly through the standard to a point spaced from the top thereof and is threaded at its upper endr in a head .6 and has communication with a passageway the head-plate that fit-s snugly against the sides of each adjustable stop so that turning movement of said stops isthereby prevented. Also, a stud 17 extends upwardly from the head-plate that has a spacer 18 thereon, and

a hollow seal cap 19 is positioned onithefltop of the head'6 through which the stud projects, the cap being secured in position on the head by anut 20. The stud and the nut are perforated for the reception of anbrdinarv sealing device 21 to prevent unauthorized removal of' the nut and 'thie c'ap 19 to gain access to the adjustable stopsrf The bottom of the head 6 has a circular opening 22 therein, and the standardi has a similar circular openin-g23 in its top that is alined with the opening 22in the head. In

said openings is disposed a hollow tubular" engaging member 24that has axial and rotative movement therein. The engaging member has at its upper end vertically projecting lugs 25 and 26 located thereon so as to be alined severally with the adjusting screws 14 and 15; or 'both'out of alineihent therewith, accordingly as the engaging member is adjust-ably turned upon its axis. A handle 27' is provided for the engaging member that extends outwardly therefrom so that said men'iber may be conveniently manipulated. Within the engaging. member are provided spaced l ugs 28 and 29 which are engageable severally with the upper end a rack bar 30 (hereinafter mentioned) or non-engage able therew'th accordingly as the engaging member is adj ustably turned. The rack bar 30 is alined with the adjustable stop 13 and has vertical movement in the engaging mem- 36, which limits the downward axial move- :nent of the engaging member by having contact withtheitop of the standard 1. 'Ihe eaternal face of the collar 35 has thereon indicia 37, such for example: 1 Qt, GaL, 1 GaL, or

other suitable indicating means that is operatively related with a pointer 38 located on the standard, so that the various positions of angular adjustment of the engaging member is visually determinable.

In the upper end of the engaging member is disposed a spring-pressed pin 39 that bears upwardly against the bottom face of the head plate 11 in which are made a series of radially disposed grooves 40, 41 and 42 into which said pin extends severally according to the angular adjustment of the engaging member, whereby said member is frictionally held in the respective positions to which it is adjusted. The stop contacting lugs 25 and 26 and the rack bar engaging lugs 28 and 29 are arranged relatively with respect to each other on the adjustable contacting member so as to be posed operably or inoperably at different points of adjustment of the contacting member. Thus, when the handle 27 is turned to the position shown in Fig. 8 the lugs 25 and 26 are out of alinement with the adjustable stops 14 and 15 and the lugs 28 and 29 are out of alinement with the rack bar, so that upon operation of the pump the rack bar 3 is unobstructed until its upward movement is limited by having contact with the adjustable stop 13, thereby permitting normal full stroke of the pump and consequent discharge of one gallon of liquid; when the handle 27 is turned to the position shown in Fig. 9 the lug 25 is alined with the adjustable stop 14 and the stop 29 is also alined with the rack bar so that the rack bar when raised encounters the lug 29 causing upward movement of the engaging member which is limited by contact of the lug 2'5 with the adjustable stop 14 whereupon movement of the pump is arrested when one-half gallon of liquid has been delivered; and when the handle is moved to that position when the pin 39 is centered in the groove 42, the lug 26 is then alined with the adjustable stop 15 and the lug 28 is also alined with the rack bar, so that the rack bar when raised encounters the lug 28 causing upward movement of the engaging member 24 which is limited by contact of the lug 26 with the adjustable stop 15 whereupon movement of the pump is arrested when one quart of liquid has been delivered. I11 this manner by adjustment of the stops and manipulating the contacting member the length of the stroke of the pump when operated is accordingly varied and the quantity of liquid discharged through the nozzle is correspondingly proportionate.

Preparatory to placing the pump unit in service, preferably at the place of manufacture, the stops 13, 14 and 15 are adjusted respectively to limit the discharge stroke of the pump at the proper points so that corresponding quantities of liquid will be discharged upon operation of the pump. After the stops have been so adjusted, the angleplate 16 is secured on the plate 11 against the sides of the stops to prevent turning thereof, and the cap 19 and the nut 20 are then secured in place to conceal the stops. T he sealing device 21 is then applied through the aperture in the nut and the stud to prevent removal of the cap.

The pump unit is then installed and connected with a liquid supply in the usual man ner.

In use, the contacting member is adjustably rotated upon its axis by manipulating the handle 27 so that the pin 39 enters one or the other of the grooves 40, 41 or 42 according to the quantity of liquid it is desired to dispense. The pump isthen operated by manipulating its crank in the usual manner. I Vhen the contacting member is thus adjusted the quantity of such discharge is ascertained by observation of the indicia on the collar and upon each operation of the pump the quantity of liquid delivered thereby is definitely indicated.

A feature of the invention is the arrangement whereby the projecting stop lugs 25 and 26 on the engaging member are concealed within the head 6 and the lugs 28 and 29 and the rack bar are concealed within the engaging member so as to be inaccessible from the exterior of the apparatus. Thus, tampering by inserting obstructions between the lugs 25 and 26 and their respective adjustable stops or between the rack bar and the lugs 28 or 29, which would cause premature limitations in the stroke of the pump and consequent short measurement upon operation of the pump, is circumvented.

I claim:

1. In a liquid dispenser, a standard having an opening in its top, a pumpingmechanism connected with the standard, and having an operating rack bar extending through said opening and provided with actuating means therefor, a discharge pipe for said pumping mechanism projecting upwardly from said standard, a head supported at a point spaced above said standard and having an opening in its bottom alined with the opening in said standard, and having a passageway communicating with said pipe, a spout extending from said head communieating with said pipe through said passageway, a tubular engaging member mounted to have axial and rotative movement in the openings in said standard and head provided at its top with upwardly projecting spaced lugs and also spaced lugs in its interior, sald member enclosing said rack bar, a series of adjustable stops supported in said head one of which is alined with said rack bar and the other stops being located so as to have alinement respectively with the upwardly extending lugs severally according to the angular adjustment of said engaging member, sald vertically projecting lugs and the interior lugs being positioned relative to each other so that when either top lug is in stop engaging position a corresponding interior lug is alined with said rack bar, and when neither top lug is in its engaging position both interior lugs are out of alinement with said rack bar, and a sealing means for said stops.

2. In a liquid dispenser, a pump having a standard and discharge pipe therefor, mechanism including a rack bar for actuating the pump, a head supported at a point spaced above said standard, a spout for said pipe, a. tubular axially and rotatively movable engaging member mounted in said standard and head and into which said rack bar extends and having spaced top and interior lugs, a series of adjustable stops supported in said head one of which is alined with said rack bar and the other stops being located so as to be alined respectively with said top lugs severally according to the angular adjustment of said engaging member, said lugs being positioned relative to each other so that when either top lug is in stop-engaging position a corresponding interior lug is alined with said rack bar, and when neither top lug is in its engaging position both interior lugs are out of alinement with said rack bar, a position indicating means for said engaging member, and a sealing means for said stops.

3. In a liquid dispenser, a measuring pump having a standard and discharge pipe therefor, operating means for said pump includ ing a rack bar, a head supported at a point spaced from said standard, a tubular axially and rotatively movable engaging member mounted in said standard and said head and encompassing said rack bar, said member having spaced top and interior lugs, a series of adjustable stops supported in said head, one of which is alined with said rack bar and the other stops being located so as to be alined respectively with said top lugs severally according to the angular adjustment of said member, said lugs being positioned relative to each other so that when either top lug is in stopengaging position a corresponding interior lug is alined with said rack bar, and when neither top lug is in its engaging position both interior lugs are out of alinement with said rack bar, and a position indicating means for said engaging member.

4. A measuring pump having a standard and discharge pipe therefor, operating means for said pump including a rack bar, a head supported at a point spaced from said standard, a series of spaced adjustable stops supported in said head, one of which is positioned to engage said rack bar upon completion of the normal stroke thereof, an engaging member mounted in said standard and head to have axial and rotative movement, spaced lugs on said member disposed to have engagement with said rack bar respectively at diflcrent periods in the stroke thereof or to be inoperable accordingly as said member is adjustably turned, other spaced lugs on said member each of which is disposed to have engagement with a corresponding one of said stopswhen a complemental one of said firstmentioned lugs is positioned for engagement with said rack bar, and a position indicating means for said member.

5. A measurin pump having operating mechanism therefor including a rack bar, a standard for said pump and mechanism, a stationary head spaced from said standard, a tubular engaging member mounted in connection with said standard and head to have axial and rotative movement and in which said rack bar is longitudinally movable and concealed, adjustable means to limit axial movement of said engaging member, means within said member operable to limit the discharge stroke of said rack bar relative thereto when said member is adjusted in a certain position and inoperable when adjusted in another position, and a sealed concealing means for said stops.

6. A measuring pump having operating mecnanism therefor including a rack bar, a standard for said pump and mechanism, a stationary head spaced from said standard, a tubular engaging member mounted in connection with said standard and head to have axial and rotative movement and in which said rack bar is longitudinally movable and concealed, adjustable means to limit axial movement of said engaging member, and means within said member operable to limit the discharge stroke of said rack bar relative thereto when said member is adjusted in a certain position and inoperable when adjusted in another position.

In testimony whereof I aflix my signature.

BYRON J. PEPPER.

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