US1796659A

US1796659A - Mixer

Info

Publication number: US1796659A
Application number: US421649A
Authority: US
Inventors: Moyer Albert
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-01-18
Filing date: 1930-01-18
Publication date: 1931-03-17
Anticipated expiration: 1948-03-17

Description

March 17, 41931 A MOYER 1,796,659

MIXER Filed Jan. 18, 1930 Patented Mar. 17, 1931 PATENT OFFICE ALBERT MOYEB, OF NEW YORK, N. Y.

MIXER Application led January 18, 1930. Serial No. 421,649.

This invention relates to mixing apparatus and particularly to a machine or apparatus for mixing materials, such as the in redients of concrete.

he modern tendency in concrete practice is to use a stili mix and mechanical devices or mixers now on the market are not adapted for or suited to the present requirements. Furthermore, diiiiculty has been experienced in effecting the complete discharge of the material from mixers of the type specified.

This invention has for its salient object to provide a mixer adapted for thoroughly and efficiently stirring and working themgredients of a stiff or relatively dry mix.

Another object of the inventlon is to provide a mixer so constructed and arranged that the mixed materials can be quickly,

20 positively and completely discharged from the apparatus.

Further objects of the invention will appear from the following specification taken in connection with the drawin s, which form a art of this application, an in which ig. 1 is a vertical, sectional elevation of a mixer constructed in accordance with the invention;`

Fig. 2 is a top plan view, partly in section, of the structure shown in Fig. 1, the section being taken substantially on line 2--2 of Fig. l;

Fig. 3 is a sectional elevation of the drivin connections; and

ig. 4 is a bottom plan view illustrating the closure for the bottom of the receptacle and the operating means therefor.

The invention brieiy described consists of a mixer comprising a receptacle, a centrally disposed member in the rece tacle having deilecting means adapted to li and turn over thev material, and a frame within the receptacle havin means adapted to scrape the material rom the wall of the receptacle and to fee-d the material downwardly and coact with the centrally disposed delecting and stirring means to thoroughly mix the material. The central member has a continuous spiral web or deflecting means adapted to raise and turn over the material and the outer frame has a continuous spiral rotatable in a direction opposite to the central spiral to oppose the rotation of the mass of material by the central spiraland to feed the material downwardly. The receptacle within which the mixmg devices are enclosed, is preferably stationary, and means is provided for rotating the outer frame in one direction and for rotating the member disposed centrally in the receptacle' in the opposite direction. Furthermore, the driving means is so arranged that the directions of rotation of the parts can be reversed so as to feed the material downwardly durinr the emptying or dumping of the material igrom the receptacle.

Further details of the invention will appear from the following description. i

In the particular form of the invention` shown in the drawings, there is illustrated a receptacle having mounted thereon at the upper end thereof a ring 12. A second mring 13 is rigidly clamped to the ring 12 in spaced relation thereto.

A skeleton frame comprising an annular ring and a plurality of bars 21 extending downwardly therefrom` is mounted within the receptacle. The bars are connected at their upper ends vto a flange 22 formed on the ring 20. The ring 2() is mounted on rollers 25 positioned between the under surface of the ring 20 and a ball race 26 formed on the upper surface of ring 12.

Attention is also called to the fact that a slight clearance is provided between the bars and the inner surface of the receptacle 10. A continuous spiral web 23 is carried by the bars 21 and extends inwardly therefrom as shown in Fig. l. The bars scrape the material from the inner surface of the receptacle and the spiral web feeds the material downwardly.

A ball race is formed on the upper surface of the ring 2O and the ring has a vertically extending flange 31 formed thereon. A ring 33 is mounted on balls 34 positioned between the under surface of the ring 33 and the ball race 30. The ring 33 has an annular recess or groove 33 extending upwardly therein whichl receives the flange 31 of the ring 20.

A ball race is provided on the upper surface of the ring 33 and an annular upwardly extending flange 35 is formed thereon. Balls 36 are positioned between the uppersurfaceeofthe ring; SVS-and a ball.A

race 37i formedinthesring;13E,

From the foregoing description itV will be seen that the rings 2O and 33 are mounted between the upper and lower rings- 13 andil l2 which are carried by the receptacle. Furthermore, the

rings

20 and 33 are supported for free rotation, on balLbearings.

The ring 33 has formed thereon or secured: theretog. a; plurality` of? inwardlyY eX-,` tending arms..A 40;.41f. and.; 42,; which; are. conhr neeted: at! theiir inner ellds'-` tangentially to one direction; and for rot'atingithe ringf 2th bars; 2.1 and: spirali 23 iinthefopposite direc-V tion@4 Each; of:l the rings 2O` andi 33. has. gear teeth forinedi at. the outer periphery;

thereoi- The ning;` 20 is rotated by a gear mounted on. a; shaft, 5l which receives power.i from: any.' suitable: source.v lihering 33 is; driven by ai gean 521whiclr` is.. mounted; ont a.A shaftiI 52y ony whichi is.: also lmounted a;

gear, 53 which. mesheswithi a gear; 54; canried by the; shaft. 51a. It, will bez obvious;t

that the gears 50 andi52will rotate-ain; op: posite directions: andg therefore, that;` the rings` 20' :and: 33; will;v be'. rotatedinl lopposite directionsi. 'llhe drivingi gears areenclosed:

withini aucasing" 55': which! is formedf in,Y ex.- tensions;y ofi' the*` rings; l2v anda- 13:

The-l bottom of ltheg receptacle isp'rovidedi withy aclosnreacomprising astationa-ry mem.- berj 6,0andl ai. rotatable member 6l'. 'llhesteaf tionary member; SQ hasepair of;v openings` 6.2ia11d `6.3;, and the ,rotatable :member Gli has shutters.k or closures; 65 adaptedi to register with; the.` openings. and* to close the. open.-A ingsinpne position ,offrotation ofV the memberl 6l. for moving thememberv into closirigor; opening.` position.

. TheV mixerV above described operates in the" following manner: When a charge' of' material has been dumped' into themixeir,` theshaft 51 will be rotated, thus causing the rings 20- and* 33 to rotateV in opposite directions. Aslthese rings are-rotated; theI centralt post 43v andi spiral web 44 carried thereby will bev4 rotated 'nr one` direction to mix, stir,- raisel and* turn' over: the) materiali in-the-lreceptaele, and? the bars`21. and spiral web 23 will rotate in the opposite direction coacting with the centrally disposed mixing means to thoroughly intermix the material. It has been found that the centrally disposed stirring and mixing means does not operate satisfactorily without'the coaction of rotatingy outeri frame sincethe material disposedi centrally. in the.. receptaclefis ,localized` in a mass and rotates around with the central post and the spiral web carried thereby. Substantially .no mixing is effected in this way. However, the rotation 'ofthe bars 2i and spiral web 23 in the opposite direction-tends vio resist and offers suiiicient resistance to the localized action described to i cause;y the` massfoff material; in

the recentacieito l,befthorou hl stirre-lV and;l

` by the action of the spiral web 44.

Although, one specificl embodiment of the invention has l been. particularly shown; and;

describech it, wiii be'funderstoodfthat the in# vention is. capable of' -modiiicationz and; that, changes in the construction; and'. in;y the; al

rangement of: the various: coopera-ting parts,

bef made without` departingfrom the spirit or `scopetof: thesinirention, as` expressdv,

in the following claims.

v"vihat i elaimis: i

frame within said= receptacle;Y rotatable rela-r,

Vtive ther-et'o5` a: spiral webcarried by saids frame,v a; centrali supporting member intsaid receptacle, spiral' web: carriedthereby; and;

extending in the same direction as gsaidfrst,

namedy spiralik web; and means fori rotating said frameand said supporting memberfim opposite directions:

2. A mixer comprising a. receptacle;V a;- frame withinsaid receptacleV including downwardly extending bars, 1 said; framey bee ing rotatable@ relative'` tof-said?l receptacle, a spiral web kcarried by said frame, a central` supporting member in;1said` reeeptacleh ai spiral web carried` thereby'.` andextending-in the same directionas said vfirst named spiral web, andmeans for rotating/saidframe yand said' supporting me'mberfinfy opposite direc- 3; A mixer comprising.. a receptacle,t a,

l; A mixen comprising; a'. receptacle, ai.

for rotating said frame and said supporting `member in opposite directions.

4. A mixer comprising a receptacle, a frame within said receptacle, rotatable relative thereto, a continuous spiral web carried by said frame, a central supporting member in said receptacle, a spiral web carried thereby and extending in the same direction as said first named spiral web, and means for rotating said frame and said supporting member in opposite directions.

5. A mixer comprising a receptacle, a frame within said receptacle, rotatable relative thereto, a continuous spiral web carried by said frame, a central supporting member in said receptacle, a spiral web carried thereby, means for rotating said central web in a direction to feed the material upwardly and outwardly, and means for rotating said frame in a direction to feed the material inwardly and downwardly.

6. A mixer comprising a receptacle, a pair of spiral webs in said receptacle, one web being centrally disposed therein and the other web being disposed adjacent the inner surface of the receptacle, means for rotating the centrally disposed web in a direction to raise and feed the material outwardly, and means for rotating the other web in a direction to feed the material inwardly and downwardly.

ALBERT MOYER.