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Publication numberUS2910277 A
Publication typeGrant
Publication dateOct 27, 1959
Filing dateMay 9, 1958
Priority dateMay 9, 1958
Publication numberUS 2910277 A, US 2910277A, US-A-2910277, US2910277 A, US2910277A
InventorsBrown Harry D
Original AssigneeBrown Harry D
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Multiple solution stirrer
US 2910277 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Oct. 27, 1959 H. D. BROWN 2,910,277

- MULTIPLE SOLUTION STIRRER Filed May 9, 1958 /Iu HH Ill' """ll INVENTOR. HARRY D blzowN BY n United StatesM Patent O This invention relates to a solution stirring device more particularly for use in chemical laboratories, and has for its principal object the provision of a simple and highly eiiicient multiple stirring device for simultaneously stir ring a plurality of solutions from a single power source, by means of which solution containers such as laboratory beakers can be quickly, easily and safely placed in or removed from stirring position while the stirrer is in operation. v

Another object of the invention is to provide means for detachably supportingV a conventional glass laboratory stirring rod at an angle to the axis of stirring rotation so as to provide a maximum stirring action without it being necessary to bend or deform the rod.

Other objects and advantages reside in the detail construction of the invention, which is designed for simplicity, economy, and efficiency, These will become more apparent from the following description.

In the following detailed description ofthe invention, Y

reference vis had to the accompanying drawing which forms a part hereof. Like numerals refer to like parts in all views of the drawing and throughout the description.

In the drawing: f

Fig, l is a top View of the improved multiple stirring device; 4 f

Fig. 2 is a front view thereof;

Fig. 3 is a right side View thereof;

Fig. 4 is an enlarged, fragmentary, detail view illustrating a stirring rod clamp as employed in the improved multiple stirring devicegand i Fig. 5 is a top View of the rod clamp, taken on the line 5 5, Fig. 4. I

The improved multiple stirrer is' assembled in a supporting frame which, as illustrated, comprises two end frame members 16 and 11 which support an elongated top member 12. The end frame members 10 and 11 Y are maintained in vertical spaced-apart relation by means of an elongated table member 13 which extends between the side members at approximatelyv one third their vertical height. A hold-down strip 14 is secured to and extends longitudinally of the table member 13 and is spaced from the latter-by means of uniformly separated spacers A plurality of hat, elongated, beaker shelves 16 Vare arranged tto slide transversely of the table member 13 between the spacing members 15. The beaker shelves 16 are maintained in a horizontal plane by means of the hold-down strip 14, and each is preferably provided with Va linger button 17 to facilitate its being drawn forwardly or pushed back on the table member 13.

A horizontal (preferably square) bearing bar 18 ex-l tends between the side frame membersY 10 and 11 above and forwardly of the table-member 13. The bearing bar is secured at its extremities in the side frame members by means of suitable set screws Y19t. A plurality of vertical i' spaced-apart, tubular shaft bearings 20, corresponding ice V:in number to the number of shelves 16, extend thiough and arev supported bythe bearing bar `18. A relatively short stirring shaft '21 is rotatably mounted in each shaft bearing 20 in vertical alignment with the -longitudinal center line of each shelf. terminates at its upper extremity in a grooved belt pulley 22 and its lower extremity in `a rod clamp 23.

The rod clamps are formed from sheet metal bands which are folded in a U-shape about the stirring shafts, and secured thereto by means of key pins 24. Each of the folded'blanks extends radially from its stirring shaft to form two opposed clamping ears which may be clamped together by means of a suitable clamp bolt 26. An inclined, semi-cylindrical socket 25 isl formed in each clamping ear which cooperates to form a rod channel to receive a glass laboratory stirringrod 27. The axis of each of the rod channels is positioned at an acute angle to the axis of the adjacent stirring shaft so as to place the glass stirring ro'din an eccentric, inclined stirring position to Yobtain a maximum stirring effect from the conventional straight glass rod.

The stirring action is obtained from an electric motor 29 mounted on the top member 12. The motors shaft indicated at 36 extends downwardly from the motor to Vdrive a double grooved motor pulley/'31 from which endsimply supporting it on one hand while theshelf is pushed-back and then lowering it, from the stirring rod.

While aspecicform of the improvement'has been "i Y described and illustrated herein, itis to Abe understood that the same may bevaried within the scope of the ap- -pended claim, without departing from the spirit of the invention.

" Having thus described the invention, what is claimed and desired secured by Letters Patent is:

A multiple.jsolutionmixer comprising: two upstandi ing end members; an elongated bearing bar extending horizontally between and supported by said end members; a plurality of vertical spaced-apart shaft bearings mounted on said -bearingban a stirring shaft mounted i .'ber secured at its extremities to said end members and v extending between the latter below and rearwardly of said bearing bar; a plurality of spaced-apart flat shelves supported on and arranged to slide horizontally and transversely of ysaid table member so that they may be drawn forwardly to a position below said stirring elements; ahold-down strip slidably securing said shelves on A said table member rand means for simultaneously rotatingallof said shafts; said means for simultaneously rotating all of said shafts comprising: an elongated'top member secured on and extending between said endmembers above said bearing bar; avmotor supported on said top memberfa motor shaft driven by andv extending i (References on following page) Each stirring shaft 21 The.

AA: beaker can be removed without stopping the motor 29 by References Ci-l'ted in the le of this patent UNITED STATES PATENTS Horton Nov. 28, 1922 Webb July 13, 1926 Simmonds Aug. 31, 1926 Andrews Feb. 15, 1927 Hancock Ian. 26, 1932 ONeill Mar. 30, 1948 Schwndt May 23, 1950 ONeill Aug. 7, 1956

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US126691 *May 14, 1872 Improvement in machines for manufacturing ice-cream
US645977 *Sep 16, 1899Mar 27, 1900Charles J ShieldsHandle-bar for velocipedes.
US820436 *Jun 23, 1905May 15, 1906Thomas PattersonClamping-elbow for tubular farm-gates.
US1437246 *Aug 1, 1922Nov 28, 1922Horton Pleas EAgitator for malted-milk machines
US1592550 *Dec 6, 1924Jul 13, 1926Webb Forrest AMixer
US1598400 *Mar 14, 1925Aug 31, 1926Clyde S SimmondsPaint-mixing machine
US1617787 *Mar 5, 1925Feb 15, 1927Washburn CoBeater
US1842938 *Sep 6, 1929Jan 26, 1932 Dispensing liquids
US2438574 *Aug 24, 1942Mar 30, 1948Union Machine CompanyMixing apparatus
US2508804 *Nov 18, 1947May 23, 1950Schwindt Benjamin WRetractable shelf support for counters and the like
US2757910 *May 5, 1951Aug 7, 1956 o neill
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4720194 *Jan 16, 1987Jan 19, 1988Friedland Donald RLiquid mixing apparatus
US5112135 *Jun 25, 1990May 12, 1992Rupp Carl AMixer
US5160198 *Nov 21, 1991Nov 3, 1992Fillon-Pichon S.A.Modular structure cabinet for stirrers of paints and similar products
US7160022 *Nov 30, 2001Jan 9, 2007Fillon TechnologiesPaint stirring machine and method for mounting same
US20050041524 *Nov 30, 2001Feb 24, 2005Alain KrzywdziakPaint stirring machine and method for mounting same
US20080100837 *Dec 13, 2007May 1, 2008The General Hospital CorporationApparatus and method for ranging and noise reduction of low coherence interferometry lci and optical coherence tomography oct signals by parallel detection of spectral bands
EP0278374A2 *Feb 3, 1988Aug 17, 1988Pharmatest Apparatebau GmbhDevice for testing the release of active components by pharmaceutical products
U.S. Classification366/197, 416/120
International ClassificationB01F13/10, B01F13/00
Cooperative ClassificationB01F13/1072
European ClassificationB01F13/10J