US1716147A - Pump - Google Patents

Description

J, PEPPER June 4, 1929.

PUMP

Original; Filed April 25.

1921, s Sheets-Shet B. J. PEPPER PUMP Original Filed April 2:5. 192; :5 Shets-Sheet 2 w. 5 W M. 1 I I i1 Id .6 I I I I ll m 0 w\\\\ 1 2 .6 J 0 -6 y M 1 5 4.0 .l/ 1., 5 l I .6 6 6.. Q "@"khQhfi-h flflhu$h$h$fi m I m .6 4. 6

June 4, 1929. I B. J. PEPPER 1,716,147

' PUMP Original Filed A ril 23. 1921 s Sheets-Sheet 5 I Fi' lnpie n ion By Alljyls Patented drained, 1923. V

UNIT D STATES PATENT OFFICE.

' BYRO J. PEPPER, on FORT AYNE, INnIANA,-AssI NoR TO s. F. BOWSER & com- PANY, me, or non/r W Y E, INDIANA, AJCORPORATION or INDIANA.

PUMP.

Original application filed April 23, 1921, Serial No. 463,848. Divided and this application filed December 20, 1923. Serial No. 681,791. a

A further object is the provision of a pumping mechanism having a pumping unit with a cylinder, plunger, plunger rod, and valves all detachable as a unit without disturb ng the I rest of the mechanism.

A further object is the provision of a pumping mechanism in which the valves are quickly and easily accessible for regrmding or re-; pairing.

- A further object is the provision of a pumpare mounted in an oil chamber so as to run in 1 oil.

A further object is the provision of a pump-- ing device adapted to pump a plurality of separate fluids.

A further object is the provision of means for automatically stopping the device when a predetermined quantity of liquid is pumped.

A still further object is the provision of a pumping mechanism which is applicable for a variety offorms of power driving mechanism.

. Other objects will appear hereinafter.

This application is a division of my copcnding application, Serial No. 463,848, filed April 23, 1921, for an improvement in pumps and which became Patent No. 1,559,365, gr'anted October 25,1925.

Embodiments of my present invention are illustrated in the accompanying drawings, forming a part of this specification, and in which- Fig. 1 is a central section of a pumping device embodying my invention;

Fig. 2 is an enlarged vertical section of a pressure regulating valve;

Fig. 3 is a View similar to Fig. 2 but showing the pressure regulating, valve adapted for stopping the pumping mechanism; and

Flg. 4 is a view similar to Fig. 1, except that the pumping mechanism is arranged to pump two separate liquids.

Referring more particularly to the accompanying drawings and as also clearly shown in my Patent No. 1,559,365, above identified,

I have indicated a base member 20, which in the present instance. is a casting, but may be formed in any desirable manner. Resting on the base 20 is a housing 21, and this housing 1s also indicatedas being a casting in the present instance, but may be formed in any desirable manner or number of parts. The housing 21 1s 1ndicated as having cars 22 secured to base 20 by cap screws 23, or their equivalent.

I preferably provide the housing 20 with open ngs 24 on its lateral sides, and these openings 24 are closed by plates 25 secured by screws 26, or their equivalent. By removing the plates 25 the pump cylinder mechanism may be. accessible.

Across the upper portion of the housing 21 I provide a partition 27, which in the present instance is somewhat V-shaped in cross-sectlon, as clearly indicated in Fig. 1. The chamber 28 above partition 27 is a-receptacle for oil or other lubricant and alsois a chamber in which the cranks and connecting rods for operating the pumps are mounted. By

mounting the cranks, etc. in oil in this cham-' plates 30. These plates 30 may be secured by screws 31, or in any other desirable manner.

Attached to the inner sides of plates 30 are bearings 32 in which a crank shaft 33 is journaled. I have indicated the bearing 32 as belng formed integral with the plates 30, but said bearings may be arranged in chamber 28 in any desirable manner.

and connected to each is a connecting rod 36 which is pivoted to a sliding rod 37. Each of the rods 37 is mounted for sliding in a bearing 38 adjacent crank shaft 33 and a stuffing box 39'at the partition 27. The lower ends of the rods 37 are attached tothe pump piston rods.

Attached to the top of base 20 in .any desirable manner, such as by cap screws 40 are housings 41 which enclose two chambers 42,

and 43. Chamber 42 as better illustrated in my above identified Patent No. 1,559,365 is in communication with the upper end of the pumping cylinder, and chamber 43 is in communication with the lower end of said cylinder. The chamber 42 is divided from cham-- ber 43- by verticalpartitions 45. In each of chambers 42 and 43 is an intake valve 46 and a discharge valve. The intake .valves 46 are in communication with an intake cham her 48 in base 20 and chamber 48 connects with a suction pipe 49, see Fig. 4, and the latter is connected ,to some source of liquid to be pumped, not shown.

Also, in base 20 is adischarge chamber 50 which communicates with the upper sidesof discharge valves and is also connected with a discharge'pipe into which the liquid is pumped. Mounted in the pumping cylinder is a piston having a piston rod53 extending up through a stu'fling box 54 and connected with rod by a pin 55. It will be noted that when piston 52 is moved downwardly in the pumping cylinder the intake valve. 46 in chamber 42 will rise to permit a liquid to enter said cylinder, and upon the upward movement of piston 52 said valve 46 will be closed and the discharge valve in said chainber willb e raised by the liquid and the latter pass out into discharge passage 50. In these same movements of the piston the downward stroke of the latterforces liquid outof the lower end of pumping cylinder and through the discharge valve into discharge passage 50, and the upward stroke of said piston will draw liquid from chamber 48 through valve 46' in chamber 43 to the'lower end of the cylinder. Thus, the piston draws in liquid at one side thereof and discharges liquid at the other side thereof at each stroke. The valve 46 and the discharge valve are substantially alike and mounted in similar manners as will more fully appear from my abovenoted patent. The housing 41 is provided with threaded openings for said valves and in each opening is a cap 56 which has a guide 011 1ts lower side. In the guide ls a stem on one of said valves 46 or the dlscharge 1. Fitted in the base 20- is a housing 61' which has a guide 62 therein. {In the guide I 62 is the stem 63 of valve '60 arranged. so that the latter mayslide vertically to con-.

trol the opening between chambers 48 and 50.

Above guide 62 in housing 61' is an enlarge. ment 64 which slides easily in the bore of housing 61, and pressing on the'upper side of enlargement 64 is a compressing spring 65 which normally holds valve 60 closed. .An-

adjustable member 66 is threadediin the housin 61 for varying the tension of spring 65. When it is desired to provide a pump which will pump a liquid, delivering it at a desired pressure, a relief valve, such as that just descr bed, and as indicated in Fig. 2, may

.be arranged to operate valve 60.

When it 'is desired .to have the 'pump stopped when a pressure exceeding a prede-- termined pressure is obtained in chamber 50, a control mechanism, such as indicated in Fig. 1, is arranged tocontrol the valve 60.

' In this arrangement the enlar ement 6.4 has a rod 67 extending up through the top of housing 61 through a stuffing box 68and provided with an-adjustablenut or bumper. 69 at itsv top. The nut 69engagesan' arm 7 0 on a stirrup 71 which is pivoted on a shaft-72. The shaft 72 .is journaled in a suitable-part. of

housing 21 and-has .fixed" thereon a cam. 73.},

The cam operates against a roller 74 pivoted as at 75 011 a' horizontally sliding rod 76. The rod 76 carriesa belt shifter 77 adapted to shiftthe belt back andforth between pulleys 34 an'd35. A spring 7 8 tends to normally hold the belt shifterin a position to hold the belt onfloosepulley 35. On the shaft 72 is fixed a lever 79 so that when it is desired to'throw Y the pump into operation, the operator manually moves lever 7 9 from its position indicated in dotted lines in Fig. 1 to its position indicated in'full lines in Fig. 4. This moves cam against roller 74 and the latter moves rod 7 6 against the influence of spring 78 and carries. the; belt shifter 77 along to shift the belt from loose pulley 35 to tight pulley 34, thus placingthe pump in operative condition; When a pressure exceeding a predetermined pressure is obtaind-in chambr'50, such pressure raises valve 60 against the influence of spring 65 and swings the stirrup 71 on shaft 72, and this swinging of the stirrup moves cam 7 3 upwardly a suflicient distance to dislodge roller 74 from a depression 80 in said cam 73. As soon as the roller 74 moves out of depression 80 spring 78 moves rod 7 6 carrying the belt shifter over to shift the belt back to the loose pulley 35 thereby stopping the pump.

I have provided a means whereby the pump will, when it has pumped a predetermined quantity, be shut off automatically. To this end a pin is provided in a disc 82 on a screw 83. Secured to the back of disc 82 is a ratchet wheel and the ratchet wheel is'operated by two pawls which are pivoted to a plate and the latter pivoted about the screw 83. The lever 88 is pivoted and operated by a link 90. Said link 90 has an elongated slot 91 therein engaging pin onpump piston rod 53. The arrangement is such that when the pin 55 moves upwardly it engages the top of slot 91 moving lever 88 a short distance, and upon the downward movement of pin 55 the latter engages the bottom of slot 91 moving the lever 88 and consequently the plate in the forward direction.

On a suitable part of plate 25 or other portion of the casing I provide markings 96 indicating g the pumping mechanism. A portion of the housing or plate 25 has a circular opening 97 through which a pointer 98 extends. The pointer 98 is secured by the screw 83 and a screw 99 on the face of'disc 82. A slot may be provided in the pointer 98 engaging screw 99 so that the relation between pointer 98 and disc 82 may be varied slightly when so desired. With this arrangement when it is desired to pump a predetermined quantity of liquid, we will say five gallons for instance,-

the operator moves the pointer 98 so that it points to the notation of 5 of graduations 96. Then upon throwing the pump into operation by moving lever 79 the pump will operate until the piston rod 53 causes the disc 82 to be moved until pointer 98 reaches the notation 50, which is also the zero or setting point. When the pointer has reached this position','pin 81 will engage a projection 101 on stirrup 71 thereby lifting cam 7 3 high enough to disengage roller 74 from the depression in said cam, at which time the spring 7 8 will move the belt shifter over so as to move the belt from pulley 34 to pulley 35 thereby stopping the device. It will therefore be seen that the pump may be stopped by hand by the operator manually moving lever 7 9 into a position indicated in Fig. 1. The pump may be stopped by the discharge line being closed which will increase the pressure in passage 50 and thereby cause valve (30 to trip cam 73 to stop the device. The device may also be stopped when a predetermined quantity of fluid has been pumpedby the pin 81 being forced against the inclined surface 101 of stirrup 71 which raises cam 73 thereby permitting spring 7 8 to move the belt shifter.

In Fig. 4 I have indicated the pumping allons or other units pumped by,

' driven by a separate set of pulleys 34 and 35.

Each .of the pulleys may have its set of beltshifting mechanism, such as already de scribed, so that one pump may be stopped independently of the other in any of the ways already mentioned. In such an arrangement the automatic stopping device on the lefta:

hand side of Fig. 4 will be changed only suflllcient to adapt it for the left-hand side instead of the mechanism already described for the right-hand side.

In Figures 1 and 4 I have represented the casing of the machine of substantially the same form and it is an advantageous feature to arrange the casing so that a customer may select any form of driving means he desires. In this connection it will benoted that the end plates 30 are the only parts necessary to vary for the different forms of driving means.

Also, the same casing will enclose-the double pump mechanism shown in Fig.4, as well as the single form shown in Fig. 1. The only change necessary is the mounting for the crankshaft and the arrangement of the chambers 48 and 50 in the base. Of course where belt-shifting stopping mechanism is used then two sets of these would be needed in the discharge valves at the highest points or in the top walls of the chambers 42 and 43 so that there is no chance for air or gases pocketing in the pump element.

The quantity notations 96 which cooperate with the pointer'98 are shown in the drawings as indicating 50 gallons, but it will be understood that by varying the size of the cylinders or the driving connection any desired number of gallons may be indicated.

To set the device for pumping a desired quantity the pointer 98 is moved manually clock wise until it points to the required number and at which time pin 81 will engage inclined surface on the stirrup 71 to stop the driving mechanism as above referred to. i

I claim 1. A pump comprising a base. having intake and discharge passages therein; a by pass valve in said base connecting said intake nected with saidintake and dischargev passages; and means associated with said valve for normally maintaining the latter closed,

- movement; a belt shifter on said rod; a spring said means being adapted to yield upon pres sure in said discharge passage'exeeeding a predetermined pressure. U f

' 2. A pump comprising a base having intake and discharge passages therein; a pump ing unit attached to said base and having connnunicationwith sa-id intake and discharge passages; a valve in said base connecting said intake and discharge. passages; and a spring tending to hold said valve closed. i v 3. A pump comprising a pumping unit having intake and discharge'passages associated therewith; a pump ioperating means connected with said pumping'unit; a valve connecting said intake and discharge passages; means having a predetermined force for maintaining said valve closed and adapt ed to yield upon the pressure. in said discharge passage exceeding a predetermined pressureto open said valve; and a connection between said valve and said pump operating means for rendering the latter inoperative. 4. A pump comprising a casing; a pump operating shaft mounted in theeasing; a pump unit in the casing connected with said shaft and having intake and discharge passages associated therewith; tight and loose pulleys on said shaft; a belt shifter mounted in said casing; a spring tending to move the belt shifter toward the loose pulley; a catch adapted for engagement with said belt-shifter; and a valve in said discharge passage connected with said catch.

V 5. A pump comprising a pumping unit.

having'intake and discharge passages associated therewith; a valve connecting said intake and discharge passages; a. spring tending to hold said'valve closed; a crank shaft operatively connected with said pumpingunit; crankshaft operating means connected with said crank shaft; and means-connected with said valve for rendering-the crank shaft operatingmeans inoperative. I

6. A pump comprising a pumping unit having intake and discharge passages associated therewith; a crank shaftconnected with said )um DlII unit' a valve connectin said intake and discharge passages; a spring normally holding sald valve closed, tight and loose pulleys on said crank shaft; a belt shifter as- I 'sociated with said pulleys; a spring'tending to move said belt shifter toward said loose pulley; a catch on said belt shifter; and a member attached to said valve and engaging said, catch adapted to hold the belt shifter adjacent said tight pulley.

7. A pump comprising a pumping unit having a discharge passage associated therewith; a valve in said dlscharge passage; a

shaft "connected A with said pumping unit; tight and loose pulleys on said shaft; ajrod having its axis. substantially parallel with said-shaft and mounted for longitudinal on said rod ;'a ca1n having a depression there in engaging said roller; pump operable means for disconnecting said roller from said depression; and a spring associated with said rod for moving the belt shifter in one direction.

9. Control mechanism for a pump comprising a pump shaft; heltpul'leys on said shaft;

a rod slidab'ly mounted; abelt shifter on said rod; a roller on said rod; a spring associated with said rod andtend ing to move the latter in one direction; a cam having a depression therein adapted to engage said roller and hold said rod against the influence of said spring; and means adapted to move said cam to disengage said depression from said rolle'rwand permit the spring to move said rod.

10. Control mechanism fora pump comprising a belt shifting rod; a spring associated with said rod for movingthe latter in'one direction; means for holding the rod against the influence of said spring; and means for rendering the means holding the rod against the influence of the spring into inoperative condition. v

A pump comprising a pumping unit hav ng a reclprocatory member therein; a power shaft operatively connected with the pumping unit; a belt shifter associated with said power shaft; a spring adapted to move the belt shifter in one direction; a catch for holding the belt shifter against the influence of said spring; a trip for engaging said catch from said belt shifter; and means operable by thepump for operating said trip.

12. A pump comprising a pumping unit having a discharge passage associated therewith a drive shaft connected with said pumpcatory member of saidpumping unit adapted to engage said stirrup and move the cam out ofoperative engagement with said belt shifter name to this specification on this 12th day of December A. D. 1923.

BYRON J. PEPPER] In testimony uvhe'reof I have signed my 10

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