Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS650529 A
Publication typeGrant
Publication dateMay 29, 1900
Filing dateFeb 12, 1900
Priority dateFeb 12, 1900
Publication numberUS 650529 A, US 650529A, US-A-650529, US650529 A, US650529A
InventorsMoriz Eggeman
Original AssigneeMoriz Eggeman
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Centrifugal testing-machine.
US 650529 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)


'Application filed Feb. 12, 1900.)

2 Sheets-Sheet l.

(No Model.)


Nb. 650,529. Y Patented may 29, |900..- n. EGGEMAN.


lApp1ica.ti0n filed Feb. 12, 1900.)

(lo Model.) 2 Sheets-Sheet 2` mi Nonms PETERS co.4 Punouwo.. WASHINGTON, D. c.

UNrrnn STATES'A` PATENT ,Oirticn.



SPECIFICATION forming part of Letters Patent No. 650,529, dated May 29, 1900. Applicatie@ hea february 12, 1900. swarm-,010. (No man.)

To all whoml t may concern:

Be it known that I, MORIZ EGGEMAN, a citi` zen of the United States,1esiding at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Centrifugal Testing-Ma-V chines, of which the following is a speciiication, reference being had therein to the accompanying drawings. y

My invention relates to that class of centrifugal testing-machines which are adapted to be operated by hand-power and which are employed for testing milk and other liquids for scientific purposes, the present invention relating to an improvement on the testingmachine embraced by my applicatiomserial No. 73et,5;i.8, filed October 23, 1899, and relating more particularly to the construction of the revolving disk or drum carrying the testing-vials.

In the accompanying drawings, Figure l is a vertical section of my improved machine, and Fig. 2 a detail horizontal section thereof on line 2 2 of Fig. l. .Fig 3 is a plan view of the disk forming the lower part ofthe revolving drum, and Fig. 4 a detail section on line et 4 of Fig.

Referring to the drawings, a denotes a bracket provided with a clam ping-screw b, by which it may be attached to a table, shelf, or other support, said bracket being provided with ears c, within which are clamped, by screws d, sleeves cf, preferably provided with ball-bearings for the rotating-drum-carrying shaft g. Surrounding'the sleeves f is a driving-sleeve h, provided with pins t', projecting within its inner wall and adapted to engage a pin j, with which the shaft g is provided. The sleeve h has a limited vertical play between the ears c of the bracket a and is to be rotated by a strap 7c, provided at its ends with handles Z.

The rotating drum consists of a vial-carrying disk m and a cover n, the said disk m being attached to the shaft g by means of a hub o and a set-screw p. The disk m is formed of sheet metal, and to properly stiffen the same it is provided with an annular peripheral bead q, the upper edge of the circumferential upwardly-projecting lip or flange y of which is about on a line with the body of the said disk, the latter being also preferably' provided with an intermediate bead fr.

The vial-holders consist of sleeves s, preferably attached lto the disk m by being solto said disk, or by being solderedV to said straps at their inner parts and at their outer parts directly to said disk. These sleeves s are preferably formed open, as shown, so as to elastically clasp the testing-vials u, which are adapted to be inserted into and withdrawn .from said sleeves by an endwise movement of said vials.

The shaft g is provided with small notches or annular grooves w, adapted to be engaged byspring-catches with which the cover n is provided, so that the cover maybe Aheld in its operative position (denoted in full lines in Fig. l) or may be lifted to an inoperative position, (denoted by dotted lines in Fig.1,) in which latter position it will be retained by said spring-catches x. When the cover is thus lifted to its raised position, vials may be inserted into or Withdrawn from the vialholders by endwise movements, this operation being much more convenient than where it is necessary toentirely remove the cover from the machine when the vials are to be inserted or removed. The spring catches @c may be disengaged from said grooves or notches w simply by lifting or pressing down on the cover 'n with a gentle force.

The upwardly-projecting lip or iiange y of the peripheral bead q of the disk m encircles the downwardly-projecting ange e' on the cover n when the latter is in its operative position,and thus,in cooperation with the springcatches serves to hold the said cover securely in place. In other words, the annular concave channel in the upper side of the pe` ripheral stiffening-bead q serves as a receptacle for the annular flange e of the cover n when said cover is in its operative position, and the annular flange y of the said peripheral bead is about on a line with the inclined body of the disk fm, so that the said flange y offers no obstruction to the vials it when the same are being inserted 'or removed endwise from the sleeves or holders s, which are rigidly attached to the said disk.

In the operation of the machine the attend- `dered directly thereto or to straps t, soldered IOO . flange at the outer edge of said bead being ant takes hold of the handles Z, witlrwhich the enough to disengage the driviiig-pinsfromA each other.

From the foregoing it will be apparent tha't I provide a centrifugal testing-machine with avial-c'arrying drum from which the vials may be removed or into which they may be inserted without entirely removing the cover from the machine and without necessitating the lifting of the vial-holding eli ps to clear the vials from the peripheral flange of the vial-carrying'disk or drum when the vials are tok be inserted or removed, this operation ot' inserting or removing the vials being therefore more convenient than in my formerconstruction. Moreover, the disk m, provided with the stiiening circumferential bead, is stable, cheap to make, and convenient in use, the upper edge ot' the upwardly-projecting about on a line with the body of the disk, so that the vials may be readily slipped in and out without interference with said flange and without entirely removing the cover n from the machine.

Having thus described my invention, I claim and desire to'secure by Letters Patentl. In a centrifugal testingmachine, the combination with a rotating sheet-metal disk provided with aseriesof vial-holders rigidly connected therewith, said disk having a peripheral stifEening-bead disposed with its hollow side upward and having a circumferential, upturned lip, of a cover provided with an annular downturned lip oriiange adapted tial'npturned lip, of a cover provided with an annular downturned lip or flange adapted to. be received within the annular channel afforded by said bead, and means for retaining thesaid cover in its operative position and for holding it in a raised or inoperative position when the vials are to be inserted or removed. 3. In a centrifugal testing-machine, the combination with the vial-carrying disk m having the annularstiiiening-bead qdisposed with its hollow side upward and having the peripheral upturned flange y, of the cover@ i provided with the annular downturn ed [lange z adapted to be received in the annular channel aiforded by said bead, said cover being also provided with one or more sprin g-catches w, of the rotating-dmm-c'arrying shaft g having the grooves or notches yzo to be engaged by said catches to permit the said cover to be retained either in an operative or an inoperative position.

In testimony whereof I aiiix my signature in the presence oli' two witnesses.

. MORIZ EGGEMAN. Vitnesses:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3205696 *Jul 7, 1961Sep 14, 1965Norman G FroomkinPrecision rotary accelerator
US3401876 *Jul 25, 1966Sep 17, 1968Dade Reagents IncMixing and decanting centrifuge
US4449965 *Oct 4, 1982May 22, 1984Beckman Instruments, Inc.Shell type centrifuge rotor having controlled windage
US4484906 *May 2, 1983Nov 27, 1984Beckman Instruments, Inc.Shell type centrifuge rotor retaining ruptured tube sample
Cooperative ClassificationB04B5/0414
European ClassificationB04B5/04B2