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Publication numberUS426275 A
Publication typeGrant
Publication dateApr 22, 1890
Filing dateAug 7, 1889
Publication numberUS 426275 A, US 426275A, US-A-426275, US426275 A, US426275A
InventorsCarl Alrick Htjlt
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
And oscar walfrid hult
US 426275 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

2 Sheets+Sheet 1.

(N0 Model.)


Patented Apr. 22, 1890.


m: mums vnsns cm, PHOT0-UTHO., msmxenm, a, c.

(No Model.) 2 Sheets-Sheet 2.


No. 426,275. atentedApr. 22, 1890.







SPECIFICATION forming part of Letters Patent No. 426,275, dated April 22, 1890.

Application filed August 7, 1,889-

To all whom it "may concern.-

Be it known that we, CARL ALRIGK HULT, of Denver, in the county of Arapahoe and State of Colorado, and OsoAR WALERID HULT, of the city, county, and State of New York, have invented a new and Improved Centrifugal Cream-Separator, of which the following is a full, clear, and exact description.

This invention relates to an improvement in cream-separators, and has for its objectto provide a device of simple, durable, and economical construction capable of being conveniently and easily manipulated, and whereby the driving mechanism may be manipulated with the least possible amount of friction.

The invention consists in the novel construction and combination of the several parts, as'will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar figures of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the apparatus. Fig. 2 is a transverse section on line a: a: of Fig. 1. Fig. 3 is a central. vertical section through the cream-separating chamber, and Fig. 4 is a transverse section through said chamber on line y y of Fig. 3.

From one side of a base a standard 11 projects perpendicularly, and a bracket 12 is formed integral with the front face of the said standard at or near the upper end. Upon the top of the standard 11 a second bracket 13 is bolted or otherwise rigidly secured, which bracket is provided with a head suitably constructed for sustaining in an upright position a can 1%, adapted to contain milk.

The horizontal bracket 12 is provided with an upwardly-extending, preferably cylindrical, post 15, and upon the said post a can, drum, or other vessel 16 is secured, havinga detachable top or cover 17, which top or cover is provided with a neck 18, extending from the top at the center, and the bottom of the cover within the said neck is apertured, and around the walls of the aperture a downweirdly-extending spout 19 is attached.

The bottom of the drum 16, which drum is Serial No. 319,988. (No model.)

preferably cylindrical and constructed of sheet metal, is conical, as illustrated at 20 in Fig. 3, and the said conical bottom is open at the center and the metal bent downward to form a lower neck or sleeve 21, which neck or sleeve is of sufficient diameter to slide freely over the post 15 of the bracket, to which post it is attached by means of a setscrew or other equivalent device.

The drum 16 is provided with an upwardlyinclined annular flange 22, secured to the inner walls, which flange is spaced somewhat from the bottom, as illustrated in Fig. 3, the flange and bottom being parallel.

From the under side of the drum 16 a spout 23 proj ects outwardly and downwardly, the lower wall of which spout is attached to the flange 22, as illustrated at the right in Fig. 3, and from the opposite side of the drum a second spout 21 projects, the base- Wall of which spout is in alignment with the bottom of the drum, the upper wall being below the flange 22.

In aperpendicularbore produced in the post 15 and the surface of the bracket immediately under the post a perpendicular shaft 25 is journaled, which shaft extends above and below the post and bracket, and to the lower end of the shaft a bevel friction-wheel 26 is detachably secured. The upper end of the shaft immediately above the top of the post 15 is provided with a base or base-plate 27, extending outward at a right angle to the shaft 25, and the said shaft is made to terminate at the upper extremity in an essentiallyconical head 28, the upper portion of which head is exteriorly threaded. The head is provided with an interior essentially-conical bore to form a spreader-chamber 29. By means of this bore the base-wall of the chamber represents a cone, and into the upperend of the spreader-chamber, which is open, the spout 19 of the drum 16 extends, as is best illustrated in Fig. 3, while from opposite sides of the base-wall of the chamber spouts 30 project downwardly and outwardly. The baseplate 27 of the shaft is provided upon its upper face with an integral marginalflange 31, with which flange and the lower end of an inner cylindrical receptacle 32 a tight joint is effected, or the receptacle may be otherwise made to constitute the bottom of the inner receptacle. The said inner receptacle is forcibly held in contact with this bottom or base by means of a lock-nut 33, screwed upon the exteriorly-threaded surface of the shaft-head to a contact with the upper surface of the said receptacle.

In the base or bottom 27 of the inner receptacle 32, around the shaft 25, an annular undercut recess 34 is formed, which recess is connected bya horizontal channel 35 with the outlet-spout 23, and near one side wall of the inner receptacle a second channel 36 is formed in the base of the inner receptacle, which channel leads downward into the space between the bottom of the drum and its flange 22, whereby any material delivered through this channel 36 finds an exit through the spout 24.

The quantity of liquid escaping through the channel 36 may be regulated by a setscrew 51, passed through the base or bottom of the inner receptacle at the under side into the channel, as shown in Fig. 3.

A wing 38 is fastened to the conical shafthead at the top and to the annular extension 27 at the bottom, the outer longitudinal edge of which wing snuglyfits the side wall of the inner receptacle, and the wing is so recessed upon its inner longitudinal edge that a space is formed between it and the shaft 25, as shown in Fig. 1.

The perpendicular position of the wing is ber it is caughtby the wing and given the same speedy revolving motion as the inner receptacle, and,as the outlet milk-channel is upon the opposite side of the wing the milk is com pelled to pass almost the entire circumference of the inner receptacle before it reaches this channel.

Motion is communicated to the shaft 25 by means of the following gearing: Upon the rear of the standard 11, near the top, a large bevel-gear drive-wheel 39 is mounted, said wheelhavingahandleattachedthereto,whereby the said drive-wheel acts in the capacity of a hand-wheel. In the lower portion of the standard 11 a shaft 40 is journaled at about an angle of forty-five degrees to the perpendicular shaft 25, and this shaft extends beyond the front and rear of the standard and is provided at the rear end with a bevel-pinion 41, meshing with the teeth of the drivewheel 39. At the forward extremity of this shaft a second bevel-pinion 42 is rigidly secured, and above the pinion 42 a friction-; wheel43 is attached. Two brackets 44 and 45 are secured to the base and arranged to extend upwardat an inclination in direction of the shaft 25, and in each of the brackets a shaft (designated, respectively, as 46 and 47) is journaled at an angle of forty-five degrees to the perpendicular shaft 25, the lower ends of the shafts 46 and 47 being journaled in the base, and upon each of said shafts at or near their lower extremities a bevel-pinion 48 is secured, while above each of the said bevel-pinions a friction-wheel 49 is attached. The friction-wheels are all of the same size and are so centered that each wheel will bear equally upon the bevel-surface of the frictionpinion 26, attached to the lower extremity of theperpendicular shaft 25. Each pinion 42 and 48 secured to the lower shaft is made to mesh with the pinion 50, journaled in suitable bearings upon the base.

In operation when the drive-wheel 39 is revolved motion is communicated to the inclined shaft 40 through its gearing and through the base-gear 50 to the several inclined base-shafts 46 and 47, also through the medium of the several friction-wheels 43 and 49 to the upright shaft 25, whereby the inner receptacle 32 may be rapidly rotated in the outer receptacle 16. The milk is placed in the can 14 and permitted to flowinto the neck of the drum 16, from whence it passes through the spout 19 into the spreader-chamber 29, and from thence through the downwardlyinclined spouts 30 into the inner revolving receptacle. By means of the rapid rotary motion of the inner receptacle the milk is thrown in contact with the walls of the said receptacle and finds an exit through the channel 36 and the spout 24, while the cream, being lighter than the milk, is made to collect around the shaft, whereupon the cream, grad ually working downward, enters the undercut recess 34, and passes from thence through the channel 35 out through the spout 23.

It is evident that the interior chamber or receptacle may be readily cleaned at any time, as when the top or cover 17 is removed from the drum 16 and the nut 33 unscrewed from connection with the shaft the inner receptacle may be withdrawn, thereby exposing every portion of the base of said receptacle containing the channels, and likewise the spreader-chamber; and, if it is necessary to gain better access to the various parts, the pinion 26 may be detached from the shaft, and the entire shaft withdrawn from its bearings.

Having thus described our invention, we claim as new, and desire to secure by Letters Patent- 1. In a cream-separator, the combination, with a rotary chamber and a shaft connected with said chamber provided with a bevel friction-pinion, of a drive-wheel, shafts journaled at an angle to said drive-wheel, one of which shafts is provided with a gear at the upper end meshing with the drive-wheel, a bevelpinion journaled beneath the friction-pinion of the shaft, pinions journaled upon each of the inclined shafts and meshing with the said central pinion, and a friction-wheel secured upon each of the said inclined shafts centered to engage with the inclined surface of the beveled shaft pinion, substantially as shown and described.

2. In a cream-separator, the combination, with a drum provided with a conical bottom, an inwardly-extending interior flange, and a spout leading from one side above the flange and from the other side below the flange, of a shaft held to revolve in said drum, provided with a conical head bored to form aspreaderchamber, a base-plate integral with the shaft above the flange, provided with a central undercut recess, a channel leading from this recess into one of the spouts, and a second channel leading from the top of the baseplate to the bottom and connecting with the other spout, and an interior bottomless receptacle engaging with the upper surface of the said base-plate, all combined for operation substantially as shown and described.

3. In a creamseparator, the combination, with a drum provided with a conical bottom, an annular upwardly-inclined interior flange above the bottom, a spout leading outward from the space between the bottom and the flange, a second spout projected from one side immediately above the flange, a removable cover provided with an exterior neck, and a downwardly-extending spout within the neck, of a shaft held to revolve in the drum, a base-plate integral with the shaft located immediately above the flange of the drum, the said base-plate being provided with a central undercut recess, a horizontal channel leading from said recess and connecting with the upper spout, an angular channel leading from the top of the projection through to the bottom and connecting with the lower spout, a check-valve connected with the latter channel, a conical head formed integral with the upper extremity of the shaft provided witha conical chamber and outlets from the base of said chamber, a bottomless inner receptacle supported by the base-plate and engaging with the head, and a lock-nut binding the said inner receptacle to the head of the shaft, substantially as and for the purpose specified.

CARL ALRIOK I-IULT. OSCAR WVALFRID I-IULT. Witnesses for Carl Alrick Hnlt:

P. HEADBURG, R. FRANKE. \Vitnesses for Oscar \Valfrid Hult:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3784092 *Apr 26, 1972Jan 8, 1974Glacier Metal Co LtdCentrifugal separator
US4029302 *Jun 6, 1974Jun 14, 1977Kloeckner-Humboldt-Deutz AgDevice for separation of mixtures of at least partially molten metals and/or metallic compounds into at least two phases of different density
US4113452 *Feb 14, 1977Sep 12, 1978Kobe, Inc.Gas/liquid separator
US4165032 *Jun 17, 1977Aug 21, 1979Dana CorporationDisposable centrifugal separator with baffle means
US5713826 *May 7, 1996Feb 3, 1998Waterlink, Inc.Vertical basket centrifuge with feed acceleration and a removable liner
US6736768 *Nov 2, 2001May 18, 2004Gambro IncFluid separation devices, systems and/or methods using a fluid pressure driven and/or balanced approach
US7094196Mar 29, 2004Aug 22, 2006Gambro Inc.Fluid separation methods using a fluid pressure driven and/or balanced approach
Cooperative ClassificationB04B1/08