US1510165A - Mixing apparatus - Google Patents

Description

sept. so, 1924. 1,510,165

' R. M. TEMPLE MIXING APPARATUS Filed Feb. 15.

1924 2 sneerrsnqe. 1

sept. 3o 1924.

` R. M. TEMPLE MIXING APPARATUS Filed Feb. 15. 1924 2 IIH I HHI Il enema scanso, 19241. Y UNITED STATES 1,510,165 PATENT olfr'lcm.'A

. maaar n. TEMPLE, or rinmmvama.

MIXING- APPARATUS.

fpplication led February 15, 1 924. Serial No. 692,981..

' as to impart a loop-like motion to its contents during agitation, so -as to direct said contents into engagement with the agitator` p elements.A A further object isto provide a mixing receptacle having means constructed to resistany tendency oi the end walls to bedrawn togetherv during operation oi the agitator elements. A Jfurther object is to provide an agitator member having means for carrying Ythe minable ingredients first to one4 end or the receptacle, and then to the other end, Aand to follow this reciprocating ,movement by equalizing the distribution ot said ingredients before another reciproca tion takes place. A further object is to pro vide mixing elements so arranged as to have a direct sweep and rubbing tendency dinal sectional view. et

from one extreme ot/,the receptacle to the other. A further object is to provide means for preventing accumulation oi the mixable materials around the shaft bearings contignous to the ends ot the receptacle, thereby insuring more sanitary conditions and adding to the lite of the parts. A further objectis to'provide a cover constructed to preventthe contents trom being thrown out while the mining element is in operation, and' particularly during the period that the receptacle is being moved to dumping position.- A `further object is to provide a mixing receptacle having a stung box constructed to prevent leakage around the agif' tator.

claims..

lin the accompanying drawings yFigures 1 and 2 are transverse sectional views, viewed in opposite directions illustrating a mixer constructed in accordance with the invention. lligure 3 is a longituiligures d and 5 are side views ot the beater taken at right angles to each other. Fi e 6 isa sectional 'view of one of the spi er arms.

Referring to the drawing, 10 designates l the casing or mixing receptacle constructed to receive the ingredients to. be mixed, and 11 is a shaft extending longitudinally through the receptacle, and having its ends projecting' through the end walls 12, said shat being rotatably mounted in suitable bearings 13. 1t will be noted that the bottom 14 of the casing lis approximately semicircular in cross-section, and merges into the front and back walls of the receptacles. The bearin 13 are so disposed that the axis of the sha 11 is eccentrically located with respect to the center of the arc of curvature of the bottom, said shaft being thus closer to the front vthan to the bach.

Keyed or otherwise secured to. the shatt 11 are iders 15, 16, each oi which is profvided wlth a suitable hub 17. .The spider 15l is of approximately 'lV-shape and the spider 16 is oi approximately Y-shape, the two spiders being so mounted upon the shaft that the arms 151i and 16 lie opposite each other while the arms 15" and 16", and the arms 15c and 16c are staggered'with respect to each other, as will be more particularly noted ,trom the drawings. The outer ends of the arms 15b, 15, 16", and 16e are provided with suitable bosses v18, to receive the ends ci the beater rods, one beater rod 19 connecting. the arms 15b and 1li and the other beater rod 19n connecting the arms 15 and idc. 'lhus it will be observed that the beater rods are in an inclined position relative vto the axis ot' the shalt, and also with respect to the longitudinal walls oir'- the casing. Rotatably mounted in the ends of the arms 15 and 16 is a rubber rod 20, said rod extendin parallel with the shalt 11. @ne end wa oi the case is provided with an opening normally closed by a plug 21, which may be removed to permit removal and replacement of the rubber bar 20, when occasion requires. 2 l

lilach arm oi the several spiders 15 and 16 is provided with a scraper 22, which consists oi a lip extending trom the forward edge ofthe arm to the contiguous end wall ot the casing, and curved inwardly contiguous to the hub 17. The function ot the scraper is to hee the end walls clean and clear ot the mixa le materials which might otherwise adhere thereto, so that said mate.-

titi

lll@

rials cannot work down into the bearings where they will ferment and disoolor, and

, eventually eat away equa the drawing,

-into the curvature of the the rear Wallis provided anl overhang at its upper edge.

the metal parts of the tank or casing and other contiguous parts of themixer. The scrapers also.tend, to reduce friction because the end motion tor against the walls of the tank is reduced to 'a minimum, and yetthe device has the same cleaning and scraping tendency as thou h the' thickness of the entire spider edl that of tlie spider and scraper.

The erid wallsof thetank or/casing are curved at their upper edges as indicated in a portion of the rear wall belng also curved-at23 to graduallymerge top edges. -Thus with somewhat Aof Slidably supported bythe top of the 'receptacle is a cover 24, conforming. to the curvature of the end walls, saidcover being somewhat Wider than the top opening of thecasing.

vThe forward movement of thecove'r is limit- `ed by a lip 25 carriedv t hereby, engaging an abutment A,strip 26 carried by the overhanging top edge of the. rear wall. When 1n 'closed position a substantial portion of the cover overhangs the front wall of the casing. The'casiug may be mounted in any of the ways well-known in the art.l For eX- ample, the bearings of the shaft may be supported by standards 30 extending upwardly from a base 31, rotation being imparted to the shaft by means of a motor 32, geared to the drive wheels 33, which are secured to the shaft 11. The drive shaft 34 is'driven by a sprocket gearing and throughan intermediate gearing 35, operates the drive pinions 36, which mesh with the wheels 33.

The vreceptacle may be tilted in any suitable or well-known manner. For purposes of illustration the dumping apparatus may consist of a countershaft-37, provided with worm'sections 38, which mesh` with worm pinions 39, screwed to the hub "40 and mounted to rotate iu suitable bearings`41.

cient to indicate the same dia' vmotor 45, the action of shaft Working on the threaded portions o f the respect'ive shafts 39 are travelers 42, to e'ach of which is pivotally connected one end of a link 43, the other end of each link being pivotally connected to a suitable lug 34, secured to the case of the receptacle. The counter shaft is driven by an independent which is controlled by a reversible motor switch 46, automatically operatedy bythe action ofthe tank at either extreme point of its movement. Devices of this `kind are well known and no attempt: is made to illustrate the detail structure thereof, it being considered sui'- atically. prevent leakagearoun -the agitator a novel stuffing-box is employed. The ends ofthe shaft 11 extend through stufflng boxes each formed of two separated of the agitasleeves 50, encircling the shaft, and having- -a flange 51. The contiguous ends o f the sleeves areseparated, and in the s ace between them is laid a plurality of elically disposed strips of packing 52, which contact with the shaft. Compression is brought against the ends of the packing by means of adjustable clamp rods 54, engaging the flanges 51. A suitable oil opening 4for lubrication purposes, as indicated at 55, is provided. i In operation, the ingredients to be mixed are placed in the tank 10 in the usual and ordinary way. It will be assumed for instance that a batch has been introduced for mixing bread dough. As the shaft rotates, the respective beater rods and the rubber rod approach closer to the front wall than to the rear wall by reason of the eccentric mounting of the shaft. A forward rotation is imparted to the shaft by the motor. As the shaft rotates, the beater rod 19, engaging the contents of the receptacle will carry the mixable ingredients toward the right hand end of the casing, and this action is followed immediately by the action of the beater rod'19 which tends to move the contents in the other direction. This reciprocable movement is followed immediately by the action of the rubber rod 20, which functions as an equalizer, tending to spread the ingredients evenly and acting somewhat to roll or spread out the in edients lyingbetween it and the rear wa of the casing.

The rotation of the actuator first works the various ingredients into a uniform granular condition and then by their continued rotation in a centrifugal horizontal position `will rubthe mass right, left, and straight, bringing abou-t a thoroughl incorporated glutinous highly develo vmass, with friction reduced to such an extent that it eliminates the necessity of using cold air blasts or refri eration appliances. This is made possible-:by the vagitating bars taking hold of the mass in large portlons and rubbing it or draw' 0' 1 thin portions wlith proper creating undue friction. considerable portion of the mass is caused to rotate with the beaters, and the overhanging portion of the back wall guides the mass to a position where it will drop back into .engagement with the agitator. Durin operation of the heater the Scrapers 22 wil remove any of the ingredients which tend to adhere to the end walls, keeping said walls substantially clean and preventing an accumulation of dough or other ingredients. )Thus the ingredients which would4 ordinal-i1 produce an unsanitary condition, if left adhering to the wall yare prevented from accumulating, and deterioration of the parts is therefore prey and it becomes necessa When the mixing operationv is complete.

tents of the casing, the atter may be tilted by the mechanism described -for'the purpose,-

the cover moving with the receptacle so that it is suspended from the abutment strip. 'Ihus the receptacle will remain closed, so that the beaters may not throw the contents of the receptacle out of the top during the `he dumping movementhas been initiated bedumping operation, as often happens when gore arresting movement of the beater shaft.

Y The top may then be moved back so as to lid expose the contents and permit completion ofthe dumping operation.

With respect to the stuiling box, experience has demonstrated that stuliing boxes of the type commonlyh used on mixing machines are very unsatisfactory. By means of the stumn box herein described, with the packing lsposed helically around the shaft, either right or left hand according to which. end ofthe shaft it is on` the rotation of the shaft serves to carry the lubricant around so as to maintain a contact with the packingy and prevent it from becoming hard. At the same time it prevents the liquid contents of the mixer from coming out around the shaft.A By tightenin the rods'54 to bring the sleeves tow-ar each other, the packing" strips are ,forced into close engagement with the shaft, -maintaining a tight joint.

Having thus explained the nature, of the invention and described an operative manner of constructing and using the same, although without attempting to set forth all of the forms in which it ma be made, or all of the forms of its use, w at is claimed iszl. In a mixer ofthe character described a rotatably mounted actuator having` beater means for imparting alternaterecipro'cating movement to the mixable materials, and also having means independent of the Kbeater means for applying a` flatteni pressure to said materia 1n a piane para el with the axis of the actuator. l'

2. In a mixer of the character described a rotatably mounted actuator havin beater means for imparting movement to -t emix- 'mf-able materials in one direction, and then movement in the other direction, and also having means independent of the beater means for subsequently applying a iattening pressure to said materials in a plane parallel with the axis of the actuator.

3. In a mixer of thel character described a rotatable shaft, spidersl carried by said shaft, inclined beater bars connecting said spiders and a rubberbar having its ends .mounted-p in said spiders independently of the beater- 4. In a mixer of the character described a shaft, beater bars inclined with respect to sadshaft and a. rubber bar parallel with to dumpthe con-- said shaft and mounted independently of the beater bars. I Y n i 5. In a mixer 0f the character described, a shaft, rigidly secured beater bars rotatable with said shaft' and inclined with respect thereto and a rubber bar looselymounted independently of said beater bars and also rotatable with said shaft and lying parallel therewith. f

6. In a mixer of the character described, a shaft, spiders snred thereto and provided with radiating arms, one arm of each spider being positioned opposite an arm of the other spider, the remaining arms of the respective-spiders -being staggered with re-l spect to each other, beaterfbars connecting the said arms, and a rubber bar carried by the 0 positely disposed arms.

` 7. ln a mixer of the character described, a-shaft, a T shaped spider on one end of said shaft, a Y-shaped spider at the other end of said shaft, the dependent ends. of the respective spiders being disposed opposite to each other, a rubber bar carried by the oppo-- sitely disposed arms, and inclined beater bars connecting the ends of the other armsI of the respective spiders. l

8. In a mixer ofy he character described, a

shaft, a T shaped s ider secured to one end of the shaft, a Y- aped spider secured to the other end of the shaft, the main stems of said spiders Vbeing disposed opposite to each other, a rubber bar loosely Ymounted in said main' stems, and inclined beater' bars connecting the other arms of the spiders.

loo

9. ,In a mixer ofthe character described.

a shaft, spiders havingradiating arms, one

arm of each spider being positioned opposite y to an arm of the other spider, the remaining arms of the spider being staggered, bars'connecting the staggered arms to the respectivespiders, a rubber bar carried by the oppo- Sitely disposed arms, and scra rs carried by4 the forward edge of each spi er arm.

l0. Ina mixer of the character described a rotatably mountedactuator having beater means or imparting alternate rec1procating movement to the mixablermaterials, and also having means independent of the beater means for applying a liattening pressure to said materials in a plane parallel with the axis of the actuator, and Scrapers carried bythe ends of the actuator. v

11. A mixer of the character described comprising a casinghaving a bottom of semicircular form in cross section, a rotatably mounted actuator located within the Y casing and disposed eccentricallyyvith rerespect to said bottom, said actuator having beater means for imparting reciprocations to the mixable materials within the., casing,',

and also having means independent"of the beater means for applying a flattening pressure to said materials in a plane parallel with the axis of the actuator,

v mounted within said casing,

y resting upon said end walls of the casing and carried by said spiders.

comprising a casing having a rear wall pro vided with an upwardly curved portion, and

an actuator rotatably mounted within said casing and having means for imparting reciprocating movements to the` mixable materials within said casing, and also having means independent of the beater means for applying a ilattening pressure to said'materials in al planeparallel with the axis ofV the actuator, a -curved portion of the rear Wall of the casing being positioned to over hang the actuator. 13. A mixerof thevcharacter described comprising a casing, a shaft rotatably spiders secured to said shaft and having angularly bent edges forming Scrapers contacting with the agitating means 14. mixer. of the character described comprising a tlltable casing having curved supporting means, a curved cover slidably supporting. means, means limiting the forward movement of said cover during tilting movement of the casing anda beater located within said casing.

15. A mixer of the, character described comprising a casing having curved su porting means, a curved cover slidab y mounted in said supporting means,I means limiting the forward movement of said cover, a beater located within said casing, said cover being of sufficient Width to provide a substantial portion overhanging the front Wall of the casing when in closed position.

16. A mixer of the characterV described comprising a tiltable casing, a curved cover slidably resting on said casi and rovided with a-Hange at its rear ge an an abutment strip on said casing complemental to said flange and cooperated therewith to form a Stop to prevent sliding movement of the cover during tilting movement of the casing.

In testimony whereof I have hereunto set m hand.

y ROBERT M. TEMPLE.

Images