US1726633A - Pump - Google Patents

Description

Sept. 3, 1929. .K. D; SMITH 1,726,633

K. D. SMITH Sept. 3, 1929.

PUMP

Filed Dec. 20, 1926 3 Sheets-Sheet 2 [N V ENTOR Mar! 0. 5/mth Sept. 3, 1929. K. D. SMITH 1,726,633

PUMP

Filed'Dec. 20., 1926 3 Sheets-Sheet s IL/VVENTOR v Karl D. /nZf/l A TTO/ENE VS Patented Sept. 3, 1929.

UNITED STATES PATENT OFFICE.

KARL D. SMITH, OF BATTLE CREEK, MICHIGAN, ASSIGNOR T0 UNION STEAM PUMP COMPANY, OF BATTLE CREEK, MICHIGAN.

PUMP.

Application filed December 20, 1926. Serial No. 155,932.

The main objects of this invention are:

First, to provide an improved high pres sure pump assembled as a unit whlch 1s very compact and one in. which the most of the moving parts are housed or inclosed and eflectively protected and lubricated.

Second, to provide an improved pump which is Well adapted for use in creamerles and the like where freedom from dirt and grease is highly desirable.

Third, to provide an improved pressure pump embodying these advantages which is comparatively economical and at the same time durable.

Objects pertaining to details and economies of construction and operation of my 1nvention will definitely appear from the detailed description to follow. The invention is clearly defined and pointed out in the claims.

A structure embodying the features of my invention is clearly illustrated in the accompanying drawing forming a part of this application, in which:

Fig. 1 is a side elevation of a structure embodying the features of my invention as especially designed by me in an apparatus for treating milk known as a viscolizer.

Fig. 2 is a fragmentary view partially in vertical longitudinal section on a line corresponding to line 2-2 of Fig. 3.

Fig. 3 is a fragmentary view partially in horizontal section on a line corresponding toline 33 of Figs. 2 and 4.

Fig. 4 is a fragmentary perspective view showing the arrangement of the auxiliary housing for the driving connections.

Fig. 5 is a perspective view of the eccentrics and of the driven gear connected thereto.

Fig. 6 is a fragmentary perspective view with the cap or top portion of the housing removed, further illustrating the relation of the parts.

Referring to the drawings, in the embodiment illustrated, I provide abase 1 having a chamber or housing 2 therein for certain of the mechanisms as will be hereinafter described, this housing having a removable top orcap 3.

The structure illustrated is especially designed by me for a milk treating apparatus, known commercially as a viscolizer, this unit being designated generally by thenumeral 4. As the details of this unit form no part of my present invention, I do not fully illustrate nor describe the same herein.

This unit includes pumps havingplunger rods 5 which are arranged through stuffing boxes 6 carried by aclosure plate 7 for the opening 8 at the end of the housing. The mounting of the stuffing box upon theplate 7 instead of Within the wall housing is a matter of manufacturing convenience and also facilitates the assembling and disassembling of the parts.

Thehousing 2 is adapted as a lubricant receptacle, it having a curved bottom 2 (see Fig. 2), the purpose of which will appear as the description proceeds.

The end walls of the housing are provided with bearing-like bosses 9 and 10 in which thenon-rotating shaft 11 is supported, the shaft being held against rotation by theset screw 12. These bosses are open at their ends to permit the introduction and removal of the shaft, the openings being closed by theplates 13.

The end walls of the housing are also provided with bearings not detailed for the drivingshaft 14, the outer endof one of the bearings being closed by theplate 15, the shaft projecting through the other bearing to receive thesprocket wheel 16. This sprocket wheel is connected to the motor indicated generally by thenumeral 17 mounted on thebracket 18 on the housing. Anauxiliary housing 19 is provided for the driving connections of the motor to theshaft 14.

.On theshaft 11, I mount a plurality ofeccentrics 20, these eccentrics being, in the embodiment illustrated, formed integrally and lying side by side without space between them and being suitably indexed relative to each other.

Thegear 21 is, in the embodiment illustrated, also formed integrally with the eccentrics. The several connected eccentrics, in effect, constitute an eccentric shaft, and for brevity, I have herein designated the same by the broad term cam shaft. Thegear 21 meshes with apinion 22 on theshaft 14 so' that thegear 21 and eccentrics are driven as a unit or single cam shaft.

The pitmen oreccentric rods 23 are provided withsuitable straps 30 embracing the eccentrics, these straps lying side b side and in sliding bearing engagement. ne of the outer straps is supported by ashoulder 31 at the inner side of thegear 21 and the other by a flange-like collar 32, the collar being also formed integrally with the eccentries.

The pitmen oreccentric rods 23 are connected to the slides orcross heads 25 by thepins 24. These cross heads are arranged side by side in coacting sliding contact upon theslideway 26, constituting a portion of the bottom of the housing, this part being suitably elevated above the lubricantwell portion 2 of the housing bottom. Theslide 26 has a flat face which is, asv illustrated, common to all of the cross heads.

Parallelslideway end members 27 project upwardly from the slideway and constitute side members or supports for the outer cross heads. The slidewaytop member 28 has a flat inner face common to all of the cross heads and is bolted upon theend members 27. This top has an upwardly projectingwall 33 at its rear edge and ends, a portion of its forward edge, at 34, lying close to the periphery of thegear 21 so that a considerable portion of the lubricant picked up by the gear is discharged upon the slideway top member, the gear acting as a pump providing a constant supply of lubricant when the machine is running.

To. make this gearv efficient as a pump, the housing is suitably conformed to the gear, as shown in Fig. 2, that is, the periphery of the gear throughout its greater portion is quite close to the wall or housing.

The bottom of the slideway projects slightly beyond the forward edge of the slideway top so that the lubricant discharged upon the slideway will flow off the front edge of. the top upon the bottom.

To further distribute the lubricant to the cross heads, the top is provided with an opening 29 above the path of each cross head. The result is that a large amount of lubricant is continuously supplied to the cross head. The eccentrics are also kept thoroughly lubricated, the eccentrics dipping into the lubricant on the down-stroke, the lubricant being carried up and delivered between the coacting faces of the eccentric straps, and also the lubricant flows down the connectingrods 23 when the same are forwardly inclined to carry lubricant to thepins 24, and when rearwardly inclined, as on the down-stroke of the eccentrics, the lubricant is directed to the eccentrics. Thus all ofthe parts are very efficiently lubricated, the structure is very compact and the number of parts is minimized.

Further, the moving parts are so encased that the escape of lubricant is effectively prevented, thus well adapting my improvements for such uses as in the viscolizer which is used, as stated, in the treatment of milk where cleanliness is greatly to be desired. H

A further advantage is that the parts are economical to produce and very easily assembled, and the structure is well adapted for high pressure pumps.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a structure of the class described, the combination of a main housing adapted as a lubricant receptacle, a driving shaft disposed to project from said housing at one end and provided with a driving pinion within the housing, a driven gear meshing with said pinion, a plurality of eccentrics connected to said driven gear, a spindle on which said driven gear and eccentrics are rotatably mounted, a pitmen coacting with said eccentrics, a cross head way base member integral with said housing and constituting a portion of the bottom wall thereof, cross heads disposed on said way base member side by side in sliding coacting relation, way side members on said base coacting with the outer sides of the outer cross heads, a way top member removably mounted on said way side members and disposed with its front edge adjacent to said gear so that the gear constitutes a pump. discharging the lubricant upon said way top member, said way top member being provided with openings for the passage of lubricant therethrough to said cross heads, a plurality of piston rods projecting through said main housing and connected to said cross heads, a motor mounted on said main housing, driving connections for said motor to said driving shaft disposed at the side of the main housing, and an auxiliary housing for said driving connections and the projecting end of said driving shaft.

2. In a structure of the class described, the combination of a main housing adapted as a lubricant receptacle, a driving shaft dis- .posed to project from said housing at one end and provided with a driving pinion within the housing, a driven gear meshing with said pinion, a plurality of eccentrics connected to saiddriven gear, a spindle on which said driven gear and eccentrics are rotatably mounted, pitmen coacting with said eccentrics, a cross head way base member integral with said housing and constituting a portion of the bottom wall thereof, cross heads disposed on said way base member side by side in sliding coacting relation, way side members on said base coacting with the outer sides of the outer cross heads, a way top member removably mounted on said way side members and disposed with its front edge adjacent to said gear so that the gear constitutes a pump discharging the lubricant upon said way top member, said top member being provided with openings for the passage of lubricant therethrcugh so said cross heads, and a pluralityof piston rods projecting through said main housing and connected to sa1d cross heads.

3. In a structure of the class described, the

rotatably mounted, pitmen coacting with said eccentrics, a cross head way base member integral with said housing and constituting a portion of the bottom wall thereof, cross heads disposed on said base member side by side in sliding coacting relation, way side members on said base coasting with the outer sides of the outer cross heat s, a plu rality of piston rods projecting through said main housing and connected to said cross heads, a motor mounted on said main housing, driving connections for said motor to said driving shaft disposed at the side of the main housing, and an auxiliary housing for said driving connections and the projecting end of said driving shaft.

4t. In a structure of the class described, the combination of a housing, a spindle within said housing, a plurality of integrally formed eccentrics disposed side by side in non-spaced relation rotatably mounted on said spindle, a gear formed integrally with said eccentrics, a plurality of cross heads disposed side by side in sliding coasting relation, a plurality of pitmen provided with eccentric straps coacting with said e'ccen trics, said straps being disposed lIl side by.

side bearing relation, a slideway for said cross heads comprising a base member having a flat face common to all of the said cross heads, and way side members coasting with the outer sides of the outer cross heads and a way top mounted on said way side members disposed with its front edge in a plane at the rear of the front edge of said way base member, said top member being disposed with a portion of its edge in close proximity to said gear so that the gear constitutes a pump discharging lubricant upon said top, said top being provided with openings above the path of said cross heads, said housing constituting a lubricant receptacle and being conformed to said gear.

5. In a structure of the class described, the combination of a housing, a spindle within said housing, a plurality of integrally formed eccentrics disposed side by side in non-spaced relation rotatably mounted on? said spindle, a gear formed in tegrally with said eccentrics, a plurality of cross heads disposed side by side in sliding coasting relation, a plurality of pitmen provided with eccentric straps coacting with said eccentrics, said straps being disposed in side by side bearing relation, a slideway for said cross heads comprising a base member having a flat face common to all of the said cross heads, and way side members coacting with the outer sides of the outer cross heads, and a way top mounted on said way side members disposed with its front edge in a plane at the rear of the front edge of said way base member, said top member being disposed with a portion of'its edge in close proximity to said gear so that the gear constitutes a pump discharging lubricant upon said top, said housing constituting a lubricant receptacle and being conformed to said gear.

6. In a structure of the class described, the combination of a housing adapted as a lubricant receptacle, a gear, a plurality of eccentrics disposed side by side in nonspaced relation rotatable with said gear, a plurality of cross heads disposed side by side in coacting sliding relation, a plurality of connecting rods provided with eccentric straps coacting with said eccentrics, said straps being disposed in side by side bearing relation, a slideway for said cross heads comprising a base member having a fiat face.

common to all of the said cross heads, way side members coacting with the outer sides of the outer cross heads, and a way top mounted on said way side members disposed with its front edge in a plane at the rear of the front edge of said way base member, said top member being disposed with a portion of its edge in close proximity to said gear so that the gear constitutes a pump discharging lubricant upon said top.

7. In a structure of the class described, the combination of a housing adapted as a lubricant receptacle, a plurality of eccentrics disposed side by side in non-spaced relation, a plurality of cross heads disposed side by side in coacting sliding relation, a plurality of connecting rods provided with eccentric straps coacting with said eccentrics, said straps being disposed in side by side bearing relation, a slideway for said cross heads comprising a base member having a fiat face common to all of the said cross heads, way side members coacting with the outer sides of the outer cross heads, and a way top mounted on said way side members disposed with its front edge in a plane at the rear of the front edge of said way base member, and a means for delivering lubricant to said way top member.

8. In a structure of the class described, the combination of a housing adapted as a lubricant receptacle, a gear, a plurality of eccentrics disposed side by side rotatable with said gear, a plurality of cross heads disposed side by side in coacting bearing relation, a plurality of connecting rods provided with eccentric straps ooacting with said eccentrics, said straps being disposed in vside by side bearing relation, and a slideway common to all of said cross heads and provided with a top disposed in close proximity to said gear so that the gear eonstitutes a pump discharging lubricant upon said top, the top constituting a distributing means for the lubricant to said cross heads.

9. In a structure of the class described, the combination of a housing adapted as a lubricant receptacle, a crank shaft provided with a gear, coacting connecting rods, connecting rod cross heads disposed sideby side in sliding coacting relation, a slideway for said cross heads comprising a base member having a flat face common to all of the said cross heads, and way side members coacting with the outer sides of the outer cross heads, and a Way top mounted on said Way side members disposed with its front edge in a plane at the rear of the front edge of said way base member to discharge lubricant thereon and upon said connecting rods, said top member being disposed with a portion of its edge in close proximity to said gear so that the gear constitutes a pump discharging lubricant upon said top, said top being provided with openings above the path of said cross heads.

In witness whereof I have hereunto set my hand.

KARL D. SMITH.

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