US1116494A - Pump-regulator. - Google Patents

Description

H. R. SETZ PUMP REGULATOR.

APPLICATION FILED JULY 11, 1914.l

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PUMP REGULATOR.

APPLIGATIOI FILED JULY 11, 1914.

1,1 1 6,494, Patented Nov. 10, 1914.

2 SHEETS*-SHEET Z.

l 'Q 'l u rr $2 G,

nf Lw mvenbox. Abbeab E r1.5. Setz il'olll whom, it may concern .Be it known that l, llene R. Sn'rz'., a citi senof the United States of America, and a resident of the city of llt. Louis, State of Missouri, have invented certain new and useful Improvements in Pump-Regulators, of which the following is a full, clear, and

exact description, reference being had to the, acconipanying drawings, forming ,a part of this specilication.

My invention relates toa re ulatng device adapted to, be associate with fuel pumps of internal combustion enginespf` the Diesel type, the present invention being an improvement on the pump regulatingdevice shown in ll. S. Patent No.

1,076,915,- issued to the `Fulton llron Works (lot.v 28, 1913.V The structure shown in this prior patent includes a diaphragm dellecti ble in response to pressure exerted by the liquid in a pump chamber' so as to vary the capacity of the pump chamber. 'lhc earlier' structure also includes a non-yieldable stop member adjustably supported oppte the central portion of the diaphragm,and serv ing to limit the movements of the. diaphragm, the stop member being under the control. of an engine governor. The yieldable diaphragm changes in shape when it is deflected to engage the rigid stop member, and since this inflexible stop member can not assume the different shapes of the dia phragm, it does not absolutely control the movement of said diaphragm.

rlhe object of the present invention is to provide' a flexible diaphragm stop adapted to be deflected to conform substantially to the shape of the diaphragm-when the latter is deflected, thereby positively controlling the movement of the diaphragm. lWhile my new diaphragm stop is a deirible structure, it is preferably composed of a number of rigid sections which do not yield in response to the pressure exerted by the diaphragm.

.Figure l is a longitudinal section, partly in elevation, illustrating a fuel pump provided with my regulating device. lfig'. lll is an enlarged vertical section showing the flesn ble di aphragm stop and the element-s associated therewith. Figi lll is a fragmentary vieuy showing a portion of the diaphragm, the flexible diaphragm stop, and the yieldab'le devicelocated between the diaphragm and the diaphragm stop. Fig. ll? is a de tpeciftcatlon of Letters lltateut.

npplcaton filed July 11,

Patented llov.. ld, llllll.a

mit. serial nu. asu/los.

the flexible diaphragm stop, p

l designates a pump cylinder, and 2 a plunger operable in said cylinder. "lhe plunger 2 is designed to be driven by a shaft 3 forming part of an internal combustion engine, said shaft 3 being provided with an eccentric d for driving a connecting Cross head 6 fixed to the pump plunger 2. Afpump chamber 7 adapted to receive the plunger 2, is designed to receive -a supply of liquid fuel, for instance oil, and the fuel received by the pump chamber is forced therefrom to the cylinder of an internal combustion engine, rlhe fuel to be forced to the engine passes from a supply pipe 8 to an inlet chamber 9 adjoining the pump chamber, and when the pump plunger moves on its suction stroke a suction valve l0 opens automatically to admit the fuel to the pump chamber i. During the power strolres'of theplunger, the valve 10 is forced. to its seat by a spring 1l, as well as bythe pres sure of the fuel in the pump'chamber, and the discharge valve l2 opens to permit 'the flow of fluid to the engine cylinder'. The plunger 2 partakes of a uniform movement, the length of each stroke of the plunger being determined by the movement` of the eccentric d. However, the volume of fuel discharged from the pump chamber isregulated or .controlled by a governing device as willi-be presently described.

Adjacent to the pump chamber *l is a diaphragm chamber i3 communicating with the pump chamber through a port lll which permits theliquid fuel entering into the pump chamber to pass therefrom into said diaphragm chamber.

l5 designates a yieldable diaphragm see curely held at its margin by a chambered member l@ secured to the pump structure and serving as a guide for an adjusting 'rod li". The diaphragm l5 is adapted to be deflected by the pressure of the fluid confined between the valves l() and l2 during the power strokes of the plunger il, thereby enlarging the space for the fuel confined between said valves. lWhen the diaphragm is deflected by the fluid pressure in the pump chamber some of the fuel escapes into the diaphragm chamber instead of passing out through the discharge port lll, and the voltailfview of one of the segments which form rod 5, and the latter being pivoted to a.

ume of Afuel to be discharged is regulated by limiting the movements of the diahragm 15, permitting a considerable deection of thediaphragm when it is desired to decrease the fuel supply, and preventing the diaphragm from deiiecting When the p maximum, fuel supply is required.

The means for: regulating the movement;

f the diaphragml to' vary theV fuel supply,

in accordance with the load on the engine,

comprises a iiexible stop device larranged behind the diaphragm vand adapted to be deflected to provide an abutment conforming substantially `4tofthe shape of the diaphragm When thel latteris deflected'. 'The .flexible stop device preferably comprises series of segmentsl 2O arranged in a circular chamber 21'at the inner 1end of the member 16, said segments being fitted. together to produce a substantiallycircular stop device'.

A The outerends of the segments areI litted be of any suitable construction. In the coni of the adjusting rod 17 to Walls of the 'chamber 21 and' the' inner ends ot said segments 'are seated infan annular groove formed by collars 22and23 at Y lines Fig. ll, a portion of the fuel .displacedA by the pump plungeris forced into the diaphragm chamber 13 so 'as to enlarge said chamber by deecting the diaphragm to the position seen in dotted lines, thereby permitting a portion of the displaced fuel to remain in the diaphragm chamberfinstead of passing out through thedischargeport 18. The deiectible stop device consisting of the rigid segments 20 roekably mounted in the chamber 21, is adaptedto' be deflected `through the medium of agovernor cooperable With the shaft 3 hyftvhichth'e plunger 2 is driven, and said governor-fmay struction hereinillustrated, the governor includes a sleeve 31 slidable 'longitudinally of the shaft 3, and said "sleeve has connected' to it a lever 24 pivotally supported at 25 and connected to a slidable cam 26 by means of a link 27. The cam member 526 isprovided with a cam groovev 29 adapted to receive a cam block 28 secured to the outer end The series of segmental stop members 20 surrounding the inner end of the adjusting rod 17. may be deflected as previously 4pointed out to provide an abutment face corresponding substantially to the shape of the diaphragm' when the latter is deflected, and it is desirable to provide a substantially smoothabutment face, devoid of shape or projecting'corners which would Wear away the adjacent face of the diaphragm. Therefore, if desired, a yieldable protector 31 may ybe interposed between the diaphragm and the segmental stop members 20. The protectorl have shown is a'circular member provided with a series of yieldable tongues Which preferably overlie the corners ofthe segmental stop members 20.

I claim y 1. Vlhecombination of a housing containing a pump chamber, means operable to force iiuid from said chamber, a deflectible .'phragm stop conformingV substantially to the shape'of said diaphragm.

2. The combination of a housing containt ing a pump chamber, ymeans operable to force iiuid from said'chamber, a deectible diaphragm exposed4 to saidpump chamber, the diaphragm being changeable in shape in response to pressure exerted in said pump chamber, a deiiectible stop device for limiting the movements of said deectible diaphragm, said' deiiectible stop device being adapted to be deflected to provide an abutment conforming substantially to the sha e of the 'diaphragmwhen the latter is efiected, and means for adjusting said deflectible stopdevice; Y i t 3'. The combination of a housing containing'a pumpfchamber, means operable to forceiliuid from said chamber, a deiiectble diaphra mi exposed to said pump chamber, the diap ragm being changeable in shape in response to pressure exerted inv said pump i chamberfafdeflectible stop device for limiting the movements of said deiectible diaphragm', saidfdeflectible stop device com- .j prising a seriesof'movable -sections adapted to be' adjustedto fprovide an abutment conforming.'substantially'to the shape of said diaphragm-Whenth'e latter is deflected, and means for ad'usting said sections.

a. The com ination of a housing contain-f ing a pump chamber, means operable tov force fluid from'said chamber, a deflectible diaphragm exposed to said pump chamber, 4

the diaphragm being changeable in shape in response to pressure exerted in said pump chamber, a deflectible stop device for limiting the movements'of said deflectible dia- 4phragm said deflectible stop device comprising a series of movable sections adapted to be adjusted to provide an vabutment'conforming substantially to the vshape' of said diaphragm when the latterisdeiected, and

kmeans forv adjusting said sections, said la'iiaaai means iruzludingA an adjusting member `ntted to said sections.

The combination of a housing containing a pump chamber, means operable to force fluid from said chamber, a deflectible diaphragm exposed to said pump chamber, the 'diaphragm being changeable in shape in response to pressure eirerted in said pump chamber, a. deflect-ibis stop device for limiting the movements 'of said deflectible diaphragm, said deiiectible stop device com prising a series of movable sections adapted to be adjust-ed to provide an abutment conforming substantially to the shape of said diaphragm when the latter is deflected, and means for adj listing said sections said means including' an adjusting rod surrounded by and fitted to said sections.

6. 'il governing device comprising a housing provided With a pump chamber, means for forcing fluid from said chamber, a defiectible diaphragm exposed to said pump chamber, the said 4diaphragm being changeable in shape in response to pressure exerted Vagainst fluid forced from the pump chamber, a deflcctible stop device for limiting the movements of said deflectible diajnhragm, an engine governor, and means, operable by said engine governor, for adjusting said deflectible stop device.

7. A governing device comprising a housing provided with a pump chamber, means for forcing fluid from said chamber, a deflectible diaphragm exposed to said pump chamber the said diaphragm being cl angeablc in shape in response to pressure exerted against fluid forced from the pump chamber, a deflectible stop devicelfor limiting the movements of said deflectible diaphragm, said deflectible stop device being adapted to be deflected to provide an abutment conforming substantially to the shape of said diaphragm when the latter is deflected, a governor, and means, operable by said governor for adjusting said deflectible stop device. I

8. A governing device comprising a housing provided with a pump chamber, means for forcing fiuid from said chamber, a deflectible diaplira'gm exposed to said pump chamber, the said diaphragm being changeable in shape in response .to pressure exerted against fluid to lie-forced fromv the pump chamber, a deflectible stop device, adjustable with relation to said diaphragm and adapted to change in shape during such adjustment to provide anvadjustable diaphragm stop' conforming substantially to the shape of the diaphragm, an engine governor, and means, operable byv said engine governor, for adjusting' said deflectible stop device.

9. i governing device comprising a housing provided with a pump chamber, means for forcing fluid from said chamber, a

dcflectible diaphragm exposed to said pump chamber, the said diaphragm being changeable in shape iu response to 'pressure exertec against iiuid forced from the pump chamber, a deflectiblestop device'comprising infleirible roclter members; an engine governor, and means, operable by 'said engine governor, for adjusting said rocker members to limit the movements of said diaphragm.

l0.v di governing -devicecomprising a housing provided with a pump chamber, means for forcing fluid from said chamber, a deflectible diaphragm exposed to said pump chamberi the said diaphragm being change,-

\ able in shape in response to pressure exerted against fluid forced from the pumpchambera substantially circular stop device comprising a series of segmental stop members adapted to be deflected to provide an abutment conforming subst.antially to the shape of, and serving as a stop for, said diaphragm when the latter is deflected, a governor, and means operable by said governor for adjusting said stop device.

ll. il governing device comprising a housing provided with a pump chamber,

means for forcing fluid from said chamber, a

deflectible diaphragm exposed to said pump chamber, the said diaphragm being changeable in shape in response to pressure exerted against fluid forced fromthe pump chamber, a deflectible stop device for limiting the movements of said diaphragm, said deflectiblestop device comprising a` series of segmental members arranged together to pro-- duce a substantiallycircular structure; an adjusting rod provided with an annular groove in which the inner ends of said segmental members are seated, and an engine governor associated with said adjusting rod lto move the latter longitudinally, thereby deflccting said stop device.

l2. il governing device comprising a housing provided with a pump chamber, means for forcing fluid from said chamber, a deflectible diaphragm exposed to said pump chamber, the said diaphragm being changeable in shape in response to pressure exerted against fluid forced from the pump chainber, a deiiectible stop device for limiting the movements of said diaphragm, said deflectible stop device comprising a series of segmental members arranged to produce a substantially circular stii'ucture; an adjusting rod provided With an annular seat to which the inner ends of said segmental members are fitted, and an engine governor associated with said adjusting rod to move the latter longitudinally, thereby dcflecting said stop device. 13. 'lhe combination of a housing containing a pump chamber, means for forcing iiuid from said chamber, a deflectible diaphragm exposed to said pump chamber,- the diaphragm being changeable in shape in response to pressure exerted in said pump dii film

lllll l'lli chamber, a deiectibie stop device, adjustable with relation to said diaphragm and adapted to change in shape during adjustment to provide an adjustable diaphragm stop convforming substantially `to the shape of said diaphragm, and a yieldable protector interposed between said diaphragm and stop evice 14. The combination of a housing contain.

ing a pump chamber,. means for -iorcing fluid from said chamber, a deectibie diaphragm exposed to said pump chamber, the diaphragm being Vchangeable in shape in response to pressure exerted in said pump chamber, a dee'etible stop device for limitphragm, said deectible stop device comprising a series of sectionsadjustable to provide an abutment conforming. substantiaiiy to the vshape of the diaphragm when the latter is deected; and a yieldable protector interposed between said deectble diaphragm and saidstop device.

H. R. SETZ. In the presence of Y I i E. K. CLARK,

M. M. ALGAR. p

`15 ing the movements of said de ectible dia-

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