US880248A - Mixing-machine. - Google Patents

Description

PATENTED FEB. 25, 1908.

T. L. SMITH.

MIXING MACHINE.

APPLIOATIOB 211.21) 1120.23. 1904.

3 SHEETS-SHEET 1..

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PATENIED' FEB. 25, 1908'.

T. L. SMITH. MIXING MACHINE.

LYPLICATIOI FILED D30. 23, 1904.

3 SHEETS-SHEET 2.

PATENTED FEB. 25, 1908.

'1'. L. SMITH.

MIXING MACHINE.

nrmomlox nun D30. 23, 1904.

3 SHEETS-SHEET 3 UNITED STATES PATENT OFFICE.

'lllOlllS l..

Sltli'lll. ()t .\lll- \'.\l.'l l .l",. WISCONSIN, ASSIGNO TO THE T. L. SMITH COMPAYY,

Ol" )lllfld'dt'lil-IE, \YISCOXSlN, A CORPORATION OF WISCONSIN.

MIXING-MACHINE.

xcj 880,248.

Specification of Letters Patent.

?fl.tented Feb. 25, 1908.

Application filed Dece er 23, 1904- Serial No. 238.034-

To all zclurm it may concern:

Be it known that I, 'lnmms l. SMITH, re

siding in .\lil \'z!ul ee. in the county of il- Z above the base of whic My invention has relation to improve-= ments in means tor mixing concrete, or the i like.

The objects of the invention are to rapidly i and effectively mix the ingredients together I for forming the concrete mortar, or the like,

with ut at the same time presenting any,

interior surfaces which are subject to being i that the receptacl is rotated smoothly and with but almost an imperceptible amount of jarring and hence with but very little strain upon the parts, thereby prolonging the lifetime of the machine: to provide a uiclc and cll'ective discharge of the mixed upl provide for permitting of the ready dumping of the discharged batch into wheclbarrows, or other suitabhcarrying devices: to dispense with the use of mixing blades. and thereby prevent clogging, and at the same time secure all the advantages of a cubical mixing receptacle devoid of interior mixing hlades,i without the attendant disadvantages: of the j cubical form of receptacle. which. iu'practicc.

; ricd by the frame work, and the said shaft-at has been found subject to undue jarring and strain on the parts: and to provide a mixing 3 wheel Hi, around which a belt (not shown) machine which is not only simple in construction, but which is also exceedingly economical in cost.

ith the above primary objects, and other incidental objects. It] view, the invention consists of the de ices and parts, or theirl E the materials hemg l'ed directly through the gopenmg. a hopper, lltltllialltt' referred to equivalents, as hcrciual'tcr set i'ort h.

in the accompanying drawings. lt, {tltt t is a side view, with the receptacle in section I and other parts broken away: l' 1g. L is a view of the discharging cud ol the machine,

parts lHUluH away: l ig. l is a section on the inc .3 of Fig. t: Fig. 4 is a horizontal central section ol' the receptacle: Fig. 5 is a form of receptacle shown in Fig. 5, the, sec.- tion being taken on a plane at r'ght an les to the plane of the section of Fig. 5; and Fig. T is a section of a fragment of a receptacle p ovided with another rnoditied form of agitating devices.

l teferring to the drawings, the numeral 7 indicates a suitable sup orting frame work,

ii the mixing receptacle 8, preferably, although not necessarily, in some embodiments of my invention, of cylindrical form, is supported. The receptacle is rotntably supported on rolls 9, which are loosely mounted on shafts it), which shafts have their hearings in the frame work. Thes rolls engage annula rails 11, 11 at opposite edges of the periphery of the receptacle, said rails provided with flanges 12 projecting at rightangles thereto, and against whichrails the inner sides of the rolls bear, the said llanges of the rails preventing sidewise movement of the receptacle. The receptacle is positively driven' or rotated by means of two )iHlOllS 13, 13, mounted on a transverse shalt 14, the said pinions engaging annular racks 15, arranged around the periphery of the receptacle. These racks are adjacent to. and occupy an inner position with relation to, the rails 11. As a matter of convenience in construction, each rail 11 and annular rack 13 may be formed on a single annulus or band surrounding the. outer edge oi: the periphery of the receptacle, as shown in the drawings. Th transverse shaft 14 is mounted in suitable bearings earone end has mounted last thereon a belt extending from any suitable source of power may pass. ()ne of the head pieces of the receptacle is provided with an pening 17 through which the nuiterials to be mixed may be led into the receptacle, or in lieu of and having a spout leading through the opening, may be provided. The opposite head piece is provided with an opening 18, for the accommodation of the discharging mechanism.

As hcrcin before stated, the interior of the receptacle is devoid of mixing blades, and in' lieu of this I have adopted a peculiar eonstruction tor the interior of the receptacle, consisting of agitating devices or walls set or devices extending from the head or heads of the receptacle to the rim of said rcceptacle in the direction of the length of the axis of rotation but at an angle thereto, said wall having its outer edge joined to one of the head pieces of the receptacle, and its inner edge joined to the rim and extending to an intermediate point of said rim, whereby the space outside or back of the wall is completely cut oil from the receptacle.

Referring particularly to the construction of this portion of my invention, and to the form illustrated on Sheets 1 and .2. of the drawings, the numerals l9 and 20 indicate plane inclined surfaces which extend from the inner side of the head piece on the charging side of the machine to the inner side of the periphery of the reccptachtuin divergent lines, and 21 and 22, respectively, the plane surfaces which extend from the inner sidc of the head piece on the discharging side of the machine to the inner side of the pcriph-.

cry of the receptacle in divergent lincs. The inner edges of these several plane surfaces where they meet the pcriphcry or rim of the receptacle necessarily take a rounded form, and the innermost points of these rounded edges extend to thc ccntcr, or approximately the center, of thc pcriphcry.

From the construction thus far explained. it will be evident that when the rcccptaclc is rotated, the plane surfaces will cll'cct a thorough agitation and mixing of the materials in the receptacle, the said plane sur faces necessarily causing a l)t1('l\' and forth crosswise movement of the contained matcrials, and the receptacle, at the same time, causing a. turning movement to be given to the materials. It willalso be noted that thc lines of the several plane surfaces on one side, if continued outside of the receptacle, would intersect the axial line at the same point. "lhcsc scvcral planc surfaccs act. as deflectors, that is to say, the material that, falls on one surface. is dcllcclcd from the nearest head toward the oppositc head, and the deflection from one side is opposilc lo thideflection from the opposite sidc, so that an 0 alternate crosswisc movcnicnt is cll'cctcd.

As before statcd, if desired, tho materials to be mixed can be fed into the rcccptaclc dircctlythrough the opening l7. l prcfcr, however, to provide a l'ccd hoppcr 23 sup? 5 ported adjacent to the outer side of the i l l charging end of the receptacle and provided with a spout .24 leading into the opening l7. 'lhe i'ccd i' the matcrials from the hoppcr to the spout and thence into the receptacle may bc governed by means of a door or gate 35 which controls the opening bctwccn the hopper and the spout. and is slidablc in angu ar guide ways 2o, .26. The gate is moved up and down in its guidc ways so as to cifect its opcning and closing by means of a lever 27, pivoted at. the point 2S, and provided with a short arm ill, preferably bent downwardly slightly. and having pivoted to its end a link 31), which link at its lower end is pivoted to the gatc. 'lhc hopper. in the 30 first. place, is iillcd with the rc piircd amount of the materials to be mixed. When so tilled, the gatc is opened, and these matcrials are thereby permitted to pass into the rcccptaclc. The gate is again closed. and 35 during the mixing operation the hopper is refilled with the next charge of the required amount, and which charge is likcwisc, by the opening of the gate, pcrmittcd to pass into the receptacle, after the lirst charge has bccn g thoroughly mixcd and dischargcd from said receptaclc.

l also providc in connection with my invcntion an improved form of discharging mcchanism. This discharging mechanism contemplates, in connection with certain mcchanism to be dcscribcd, thc cniplovmcnt within the rcccptaclc of a scoop or bucket. or prcl'crably a plurality of scoops or buckets. and l have found by cxpcricncc that two 109 of the scoops or bucketsrclcrrcd to. indicatcd by the nunn-rals 2H and 32, rcspcctivcly, and extending inwardly from the opposite hcad picccs of thc rcccptaclc, secure most advantagcous results.

it will he undcrstood that thc receptacle rotalcs in thc dir ction indicatcd by the arrow in Fig. 3. When, in thc rotation of thc rcccplaclc, the buckct 31 shown in Fig. I; rcachcs a lowcr position, it will bcgin to scoop up the matcrial, and as it travcls up wardly from this lowcr position, as indicated by the position of the buclrct 32 in Fig. 3, it will clcvatc or hit the matcrial scoopcd up thcrcby, and in vicw ol' the fact. that cach 11:, bucket is on a dcclinc toward the discharge end of the machine, thc material contained within the bnckct slidcs down toward said dischargc cud of the receptacle. \Vhcn the scoop or bucket. rcachcs a ccrtain hcight in its travcl upwardly, onc of its longitudinal cdgcs will be on a dcclinc and thc matcrial within the scoop or buckct will thcn slide out of thc same, and bc caught in an upwardly inclined trough 33. ()f couisc, 'whcn thc 12 scoop or buckct is brought to a. still highcr position by thc ro .tion ol' lhc rcccptaclc, thc full contcnts of said scoop or lflltjlfll/ is at oncc cmpticd into the trough. 'lhc trough 33 leads to a discharge hopper or rcccptaclc 34, and the outer end of said trough is open so as to discharge directly into the hopper.

.Tliehopper is sutiiciently elevated to permit a wheelbarrow, or other carrying device. to 1 be run therebeneatli. and the bottom of the hopper is provided with a discharge opening which may be controlled by any suitable form of gate, or other closure. provide a closure consisting oi the gate portion 35, and the arms 36 extending upwardly 1 from opposite ends of the gate and straddl ng i the si s of the hopper 34, and pivoted to said sides of the hopper at the points 37.

The gate is preferably struck on an arc of a circle ditl'ering slightly from an are described from the. pivot points 37 as a center, whereby a more tight closure is effected than would lie the case if the gate were either flat. or struck from the arc of a circle corresponding to an are described from the pivot. points 37 The gate is preferably provided with a handle 38, for convenience in swinging it to an open or closed position.

It. will of course be understood that during the mixing operation it is not desirable that the trough 33 should extend through the opening 18 into the receptacle, inasmuch as if it did so extend, the materials or ingredients under process of being mixed would be continually dumped by the buckets into the hopper and thereby interfere with an efl'ective mixing operation. I therefore provide means. for readily withdrawing the said trough from the opening during the mixing I operation, and inserting the same into the said opening during the mixing operation. The preferred means for this purpose are illustrated in Figs. 1 & 2 of the drawings. Referring to this mechanism, a carriage is provided which is adapted to travel along the top edges of the hopper 34. This carriage preferably consists of the top pieces 39, 2;!) which, at their outer edges, rest upon angular rails 40, 40, said rails forming a track for the F travel of the carriage. The extreme outer edges of the top pieces are bent into hook form, and the horizontal members of these hooks extend beneath the horizontal flanges E of the angular rails 40, and hence retain the carriage against upward removal from the said rails 40. From the upper side of the top pieces 39 extend standards 41 S; 42. The outer pair of standards 42 are connected by a transverse connecting piece 43, which transverse piece not only serves as a handle for i causing the backward and forward travel of Z the carriage, but also serves to connect. the two top pieces ot the carriage. 'lhe ills. charge trough 33 is connected to the carriage bv means of arms 44 which extend outwardly 1 between the two pair of standards 41 &-42, and are connected to said standards in any desirable manner.

moved backward and forward, the trough 33, by reason of the connection of said trough to I prefer to plished in various ways, but i prefer to eflcct \Yhen the carriage 1 I the carriage, is necessarily moved with the carriage. lu the movement of the trough it P preferably rides on rollers 43 at the out r eiid of said trough. 'l'licsc rollers travel on the i rails 40.

In practice, under certain c nditions. i; 5 will be desirable to vary or adjust the inclination of the trough 33. This may be accomthe adiusiment by providing the two pair of standards 41 and -12 with curved slots 6 extending in the direction of the length of said standards. Through these slots are passed small screws 47, which screws enter and have i threadedrugagement with the arms -14 of the carriage. ii is obvious that. by loosening the screws the trough 33 may be turned on the rollers 45 as pivotsjso as to either raise or lower the inner end of said trough to suit requirements. In order to limit the outward travel of the carriage, I provide stop pins or lugs 48. projecting laterally from the rails 40, with which depending lingers 48 at the front end of the carriage are adapted to contact. It will be noticed that the coops or shovels 3l32 are of peculiar construction. that. is to say. they are on a decline from their inner ends towards and to the outer ends thereof, and at aid outer ends the concavity is somewhat more depressed, or

l l i deeper tnan at any other point thereof as indicated by the numeral 4!). As -a ch scoop or bucket is on a decline toward the discharge end of the receptacle, the material scooped up by a bucket necessarily slides down toward that end of said bucket. which connects with the head of the receptacle at the discharge end of said receptacle. and for this reason it is important that this end of the scoop or bu ket be deeper than other The inclining of av scoop l portions thereof. l l

or bucket in the direction described is to bring the principal point of discharge of each bucket. and which is the depressed portion, adjacent to the end piece or head at the dis- 1 charge end of the receptacle, so as to avoid the necessity of projecting the trough into the receptacle to any considerable distance.

it will be further noted that the bordering edges of the charging and discharging openings of the opposite head pieces are flanged or curved outwardf as indicated by the numerals 5f), 50. This prevents the spilling mixing operation. the flanged edges forming deflectors which act to deflect the spilling materialsinwardly.

in Figs. 5 and 6 of the drawings, l show a modified form of the agitating or mixing devices, in which the actingcxposed face of each device is of a substantially pyramidal f rm, I the. said devices, however, extending from g the respective head pieces of the receptacle l to the periphery of said receptacle at angles outwardly of the ingredients during the receptacle, and means for rotating the recep- 'and a connecting rim and also having a disand a connecting r m and aloe having a di-.- charge opening and interior wall independl ent of and extending. respectively. from the opposite head pieces to the rim in the direc- 1 tion of the length oi the axis of rotation but at an angle thereto. each wall having its outer edge joined to one of the head pieceof the receptacle, and its inwardly extending edge joined to the rim and extending to intermediate point of said rim, whereby spaces utside or heel; of the wells are completely cut oli from the interior ol the recep- Lacie, of means for charging the receptacle, and means for rotating the receptacle. l

on the t 3. In a mixing machine, in combination I with a mixing receptacle having head pieces and a conne ting rim and also having it discharge opening and interior walls independent of and extending from one of the head pieces to the rim in the direction If the, length of the axis of rotation but at an angle 1 thereto, said walls arranged in pairs cKtm-ding from the head to the rim in divergent lines, and each wall having its outer edge joined to the head piece of the receptacle and its inwardly extending edge joined to the rim and extending to an intcrnu-dinte point i 'of said rim, whereby the space ou s e or back of the wall is completely cut ll' irom l the interior of the receptacle, of int ans for l charging the receptacle, and means for rol tatingthe receptacle.

4. In a mixing machine, in combination with a mixing receptacle having head pieces and a connecting rim and also having a discharge opening and interior walls independi ent of and extending from the head piece to l the rim in the direction of the length of the axis of rotation but at an angle thereto, said l walls faeing'each other and extending from i the head to the rim in divergent lines, and l each wall having its outer edge joined to the head piece of the receptacle, and its in-2 wordiy extending edge joined to the rim and extending to an intermediate point of mid rim whereby the space outside or back of the wall is completely cut off from the interior of the receptacle, of means for charging the tacle.

5. in a mixing machine, in combination with a mixing receptacle havim; head pieces charge opening and a phualit" of ill'u'llm walls extending from each head Ji(((' to the rim in the direction of the length of the axis of rotation but at an angle thereto, said walls I extending from each head piece being arranged in pairs, one pair of seid wells extending from one head piece alternating in position to a pairol walls extending from the op- I positc head piece, of means for charging the receptacle, and means for rotating the receptaele.

6., In a mixing machine, in onnbination i with a mixing receptacle havin head pieces and n connecting rim and also raving a discharge opening and a plurality of interior walls extending from each head piece It) thrrim in the direction of the length of the axi of r tation. but :it an angle thereto. said walls which extend iron. each head piei tbeing arranged in pair and extending ilutn the re o -the head pieres n dixcrgent lines with ft-spr t'l to the axis ol rotation. and one pair of said nulls extending from one He d i -r alternating in position to a pa r f ll,-

ding from the opposite head piece, of for charging the receptacle, and means for rotating said receptacle.

7. in n. mixing nmchine, the eon'ihim titm of a mixing |w-u}.i:1('l0 provided with a discharge o ening. rails txtendtng ontwardlv i from the dtschI-trge opening. a carriage adapted to trznel on mid rails. a trough connected t the cnrriugc and adapted, when the curringc is moved inwardly, to he proje ted through the dis harge opening of tacle. and into the receptacle, and, when th j g is moved outwardly, to be withdrawn through the discharge on: sting from within the receptacle, means within the receptacle l'or scooping up the mixed materials and depositing the some in the trough, and means for charging the receptacle.

8. in a mixing macnme, the combination 5 of a mining re eptacle provided with a (.i$'

charge opening, rails extending outwnrdlv th discharge opening, a carriage adapted to trnvelon the rails, a trough connected to the carrmgc and [)l'uvitltrlXx-ith ll resting on the rails, said trough adapted when the carriage is moved inwardlv to be projected through the discharge opening of the receptacle, and into the receptacle, itnd, when the carriz 'c is moved outwardly. to be withdrawn through the discharge opening from within the receptacle, means within the 'recephlt'lt'. for neooping up the mixed ma tcrinl and depoieiting the same in the trou h and means for charging the receptacle. 5 i

t). in a mixing machine, the combination of a mixing receptacle provided with a. disohm-gtopening, rails extending from the discharge opening, a carrizige adapted to travel on the rails, said carriage provided with a projecting uprighv, said upright having a sogltltilttll slot extending in the direction of the length thereof, a trough provided with an outward projection extending across the upi ht a crew passing through the slot of the upright and engaging the projection of the trough, said trough, when the varying is caused to travel inwardly, being plnjrgot d through the dis harge opening and caused v, xtend into the receptacle, and, when the carriage is moved outwardly, to be with drawn through the discharge opening from i hi the receptacle, means within the receptacle for scooping up the mixed materiale and depositing the same in the trough, and means for charging the receptacle.

10 In a mixing machine. the combination of a mixing receptacle provided with a discharge opening, a hopper adjacent to the I discharge opening of the receptacle, said hopper provided with a discharge opening, a carriage adapted to travel on the upper edges of the hopper, =i trough connected to the carriage and so constructed as to discharge into the hopper, and adapted, when the. car- &

discharge opening of the receptacle, said hopper provided with a discharge opening, a carriage adapted to travel on the upper edges of the hopper, a trough connected to the carriage and so constructed as to discharge into the hopper, said trough provided at its outer end with rollers adapted to travel on the upper edges of the hopper, and said trough adapted, when the carriage is moved inwardly, to be projected through the discharge opening of the receptacle, and mt o }the receptacle, and, when the carriage 15 i the discharge opening from within is e receptacle, means within the receptacle for positing thc'same in the trough, and means for rotating the receptacle.

12. In a mixing machine. the combination of a mixing receptacle provided with a discharge opening, rails extending outwardly from the discharge opening, a carriage adapted to travel on the rails, a trough connected to the carriage and extending therefrom at an upward incline, said trou h adapted when the carriage is moved inward y I to be projected through the discharge opening of the receptacle, and into the re- .ceptacle, and, when the carriage is moved outwardly, to be withdrawn through the discharge opening from within the receptacle, means within the receptacle for scooping up the mixed materials and depositing the same in the trough, and means for charging the receptacle.

In testimony whereof, I aflix my signature, in presence of two witnesses.

THOMAS L. SMITH.

\Vitriesses:

A. L. MonsELL, ANNA F. SCHMIDTBAUER.

scooping up the mixed materials and de* moved outwardlv, to be withdrawn throu h

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