US1127009A - Mixer. - Google Patents

Description

W. J. JUDD.

MIXER. APPLICATION FILED JULY'LEI, I005.

Patented Fbj2, 1915.

7 SHEETS-SHEET 1.

I I I W. J. JUDD.

MIXER.

APPLICATION FILED JULYIS, 1.905.

7 SHEETSSHEET 2.

ATTO/P/V V" W. J. JUDD.

MIXER.

APPLIGATION FILED JULY 15,

Patented Feb. 2, 1915.

7 SHEETSSHEBT s.

mr/v 'ssas- W. J. JUDD.

MIXER.

' APPLICATION FILED JULY15,19'O5 1,127,009, Patented Feb. 2, 1915,

' 5 I 7 SHEBTSSHEET 4. WI I I O O 271%; JMZW 5 W. J. JUDD.

MIXER.

APPLICATION FILED JULY15 1905..

Patented Feb. 2, 1915.

'"l' SHEETS-SHEET 5.

APPLICATION FILED .TULY15, 1.905.

W. J. JUDD.

' MIXER.

Patented Feb."2,1915.

'1 SHEETS-SHEET 8.

W. J. JUDD.

4 MIXER.

APPLICATION FILED JULY 15, 1905 Patented Feb-2, 1915.

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WILLIAM J. sum), or HILLSDALE, NEW JERSEY.

MIXER.

To all whom it may concern and useful Improvements in Mixers, of

which the following is a specification.

This invention relates to machines for mixing concrete mortar and other materials,

such as illustrated in United States Patent granted to me Nov. 15, 1904., No. 775,242. In saidpatent is shown a cubiform barrel,

mounted to revolve upon a single horizontal axis and provided with interior vanes or buckets which converge toward the axis of revolution at the discharge end of the barrel, and are so formed and disposed that during the revolution of'the barrel in one direction the contentsare vmixed without discharging, while. by turning the barrel in the opposite direction the. mixed contents are discharged.

The object of my invention is to improve the construction and op'eration 'and reduce the cost of the machine, and particularly to avoid the necessity of stopping and backing the barrel when it is desired-to discharge. The barrel-reversing mechanism is dispensedj with, and the time occupied in starting and stopping of the barrel' issa'ved so that. the barrel may be kept in rotation in a single direction for an indefinite time, and repeatedly charged and dischargedwithout stopping.

Another object is to enable a larger charge to be mixed by the barrel at each operation.

In carrying out the present invention, I turn the barrel always backwardly, that is, in the direction for causing the same to be discharged; while I provide means for -temporarily preventing such discharge. Such means preferably consist of a door closing the discharge end of the barrel and rotating therewith. During the revolution of the barrel, the mixture thereinrepeatedly slides down the buckets or vanes toward the mouth of the barrel, but does not escape, being turned back by said door into the body of the barrel. Owing to the additional agitation and churning of'the mixture as it runs down the buckets and then out thereof and back into the body of the barrel, the

a material is much mere rapidly mixed than is the case in the machine set forth in said patent. The door therefore is an important Specification of Letters Iatent.

- mixing buckets.

element in effecting rapid mixing, since it enables the buckets to act not'only as dis-' that could be accommodated by a barrel of the same size as described in said patent, since, owing to the use of the door, the barrel maybe filled up far beyond the level of the discharge opening without liability, of escape of material. I also contrive to form and mount the buckets so that they contact at their tips, whereby their discharge capacity is greatly increased. w

Other ob ects and. advantages will hereinafter appear.

In the accompanying drawingsrFigure 1- is a plan of a portable mixing machine made Patented Feb. 2, 1915.

Application filed July 15, 1905. Serial No. 270,283.

in accordance with my present improvements; an engine for driving the mixing barrel being indicated diagrammatically. In-this figure the lower portion ofthe feeding hopper is shown in section. Fig. 2 is a side elevation of the mixing barrel and its appurtenances, showing the discharge in full and dotted lines means for locking said door closed. Fig. 3 is a vertical section of the. apparatus taken at the axis of revolution ofthe mixing barrel. Fig. 4

-8() door in full lines as open, and also showing shows on smaller scale an elevation and sec'-.

tion of a triangular frame, such as used upon each end of the'mixing barrel. Fig. 5 is a rear elevation, showing the discharge end of the mixing barrel. Fig. 6 is an end elevation;'-Fig. 7 a plan and Fig. 8 an edge View of a mixing and discharge bucket. Fig. 9 is an elevation of the mixing barrel sj'howing the discharge end. Fig-10 is a 'front elevation of the apparatus.

Fig. 11 is a sectional view, Fig. 12 a rear elevation, and Fig. 13 a front elevation, of a feeding chute. Fig. H is a sectional elevation illus- 1, 2, 3, 4, 5, 6. It is mounted so as to re volve upon a horizontal axis designated as 7, said axis intersecting opposite apices of the cube, which is truncated at said apices. The 'cubiform barrel is mounted uponwheels 8 and 9, which ride ipon two 'pairs of antifriction rolls, one'pair indicated at 10, 11, and the other at 12, 13 the first pair mounted upon an axle 1 1 and the second upon an axle 15, each roll-being keyed to itsaxle as at'16, so that the rolls in each pair must turn together, whereby easy .and firm running of the large trundle wheels is assured.

trundle wheels prevent axial'displacement of the barrel. Said axlesl l, 15 are mountedinbearings 19 upon a pair of sills 20, the

latter. connectedby timbers 21 to formthe I [bed portion of the framework. To effect having a fly wheel 28.

revolution of the barrel, l'provide upon the trundle wheel 9 an annular gear 22, meshing with a driving pinion. 23, to which is fixed a smaller pinion 24:, the latter meshing with a still smaller pinion 25 fixed upon a driving shaft 26 of an engine 27 said shaft also The materials tobe mixed are placed in a hopper'29 at the receiving end of the barrel,

saidhopper provided at its bottom with a trap 30, which has a flange 31 inclosing the lower. end of the hopper,and is hinged at 32 to the wall of the hopper, wherebythe trap may be dropped to the inclined position' as seen at 30 Fig. 3. Upon the trap isfixeda handle 33, which is provided with a toggle 3%, connected at one end to the handle and at the other end pivoted at 35 to the wall of the hopper. When the toggle is fully extended as seen'in full lines at Fig. 3, it acts as a lock to hold up the trap 30. The toggle may be broken at any time, when the trap will swing down as shown in dotted lines. This trap 30 when in the dotted-line position acts as an apron, fitting within an inclined chute 36, upon which the material of the hopper slides down into the mixing barrel through a circular opening 37 in the receiving end of the barrel. Said circular opening 37 is formed in a triangular bracket 38, Fig. 4, having three bevel flanges 39 to fit over the edges of the cube where it is truncated, said flanges being riveted to the triangular frame 38 is fixed] upon the inner face of trundle wheel 9, which is annular. and provided with three interior ears, seen at 41, Fig. 5, to which the corners of the triangular frames are secured by rivets at 12. Theother truncated apex of the barrel is provided with a similar triangular frame 43, having a similar'circular central opening and secured in the manner already described in respect to the trundle wheel 8.

The bottom portion of the chute 36, which is formed of sheet metal, fits within a lower chute l l, the latter provided with a vertical flange or plate 15, whereby it is secured to the rear side of a vertical guard plate 46, the

latterjsecured between and upon a pair of upright angle-irons 47 fixed upon the frame work. It will be seen at Kg. 3 that the,

lower lip 44 of the chute 44: projects within the circular opening 37 in the triangular plate or frame 38 which is fastened upon the truncated open end of the cubiform barrel. Upon the outer face of said plate 38 is provided a circular mouth-piece which is 62, 6 3 fixed within the barrel to revolve therewith in the direction shown by the.

arrow, Figs. 5 and 9. The blades are similar and symmetrically disposed about the axis of revolution 7, toward which they converge at their discharge ends, which are seen at Fig. 5 just within the circular axial opening 37 1nthe triangular frame 43".

Each blade or vane is secured edgewise against an adjoining side of the cube by means of cars 64;, that is, to one of the three sides.of the barrel that slope toward the apex at the discharge end. The blade or vane 61 is secured to the side 3 and is about perpendicular thereto, and extends from the opening 37 to the oppositeside 4 of the cube, to which it is secured by an car 65. It will be seen that a box or bucket is formed by the cotiperation of the vane 61 with the ad- 'joining sides 1 and'3- of the barrel, said bucket being-closed by the other adjoining side 4' of the barrel. The bucket receives the mixture when at the lowermost portion of its revolution, and holds the same during 'I.

the rotation of the barrel until 1: the bucket I gets to its highest point. Then. the material slips out of the bucket and falls either back into the barrel again, thereby mixing sides of the cube as seen at 4.0,- Fig. 3. Thisr'ithe inaterial, or else is discharged in a'manner presently to be explained. It will be noted that oncein each revolution each bucket is at the lowermost portion of the barrel, and hence in position to drain the same. The

three blades or vanes 61, 62 and 63 are-simi-' larly constructed and placed; and owing to their relative positions one is always pick,-.-:

' ing up a charge of the contents of the barrel.

at 66, forming a scoop for better retaining the ingredients, and at their tips each of 55 vibration or tipping upon said pivot; the

gate for this purpose having a hub 83, provided with an opening 84 to fit loosely upon iaargooc saidbladesmeets-both of theothers, as seen at Figs. 5 scoop portion 66 ofone blade matches or conforms tothe body or flat portion of the next, as seen at said figures: The blades are broad and capacious, an'd the opening at the discharge end. of the barrel is sufficiently large -.to quickly. Owing to the direct meetlng of the tips of the blades, no space is wastedat the opening, thus conducing to, rapidityof discharge.

Inorder to preventdischarge during the mixing operation, I closethe discharge end ofthe barrel by means of a gate or. closure 67 which rotates with the ,barrel, but is pivoted upon the -endofnin arm 68, the lat-' ter hinged upon the framework at 69 and movable from the closed position at Fig. 3 to the open'position-at ,Fig. 2. When it is desiredito discharge the mixture, it is only necessary to open saidgate- 67 which movement is effected. by means 'of a lever 70, Fig. 2, connected by a link 71 toan arm 72 fixed upon a rock shaft 7 3 to which the arm 68 is also fixed. Thedo'or is held open by means of a latch 74:, having a notch 75 .to engage a projection 76 formed upon a short arm 77 of the lever. \Vhen it is desired to close the gate, the latch 74 is lifted, andthe lever 70 is pulled down toQthe-dotted line pbsition link 71 forms a toggle with the arm 77, and

that the toggle is closed duringthe downward swing of the lever 70, and carried slightly past the closing point to the posi tion shownin dotted lines, whereby the arm 68 is locked down, and the gate held tightly shut. Any suitable stop, as 78, may be provided for preventing .further lmovement of the lever. Upon this end of the barrel I fix an annular discharge chute 79, said chute having one or more ears 80, whereby the pivot 82; said opening, however, flaring from its center toward both ends, so as to enable the tilting of the cover relatively to the arm 68. Hence the gate is sure to fit tightly in the chute 79 under all circumstances. p

In operation, the material to be mixed and 9. The turned up end of the enable the same to discharge at Fig. 2. It .will be seen that the others.

is shoveled into the hopper 29; then the toggle 34 is broken andthe trap'30 dropped, whereupon the material flows down the chute 36 into the revolving barrel, water being also admitted through the pipe 60. At this .time the discharge gate 67 is closed, the parts being imposition seen in dotted lines at :Fig. 2. As soon as suflicient ma-.

terial has entered the barrel, the handle 33 is pulled down,.thereby closing the trap 30. As soon as .the' 'r'na rial is suificiently mixed by the rotation, of the barrel, the lever is moved to the full line position at Fig. 2, thereby opening the gate or closure 67, whereuponthe buckets or blades 61, as

the barrel continues to rotate discharge,

through the chute 79. This operation continues until the barrel is drained of its contents; and without stopping the barrel, the gate 67 may be closed and the trap 30 opened, so as to admit a fresh batch of matenal to be mixed. Thus the feeding,

'mixing and discharging may be conducted indefinitely without stopping the barrel.

In the ,form seen at Fig. 14, the arm 68? at the discharge end of the apparatus is provided with a closure in the form of a scoop 68*, which infull lines is seen introduced within the .annular chute 79 in position to receive and turn backv into the barrel the charges received by said scoop from the discharge buckets already described. By this form-of closure or gate the ingredients may be somewhat more rapidly mixed, while a view is a-Eorded to the attendant of the contents of the barrel, so that he may open the closure to the dotted-line position and discharge the contents as soon as he sees that they are sufficiently mixed.

Other variations may be resorted to Within the scope of the invention, and portions of my improvements may be used without Having thus described my invention, I claim:

1. In a mixing machine, the combination of a revoluble mixing barrel having at one end a charge opening and at the other end a discharge opening, discharging blades within the barrel and converging to the discharge end thereof, and tending constantly to discharge the contents of the barrel during the entire mixingoperation, a closure fitted to the discharge opening of the mixi ilg barrel and revolving therewith to prevent the discharge thereof, and releasable means mounted upon a stationary part of the machine to be normally stationary during the rotation of the barrel and extending to said closure to hold the latter in closed position.

2. In a mixing machine, the combination with a revoluble mixing barrel having at one end a charge opening and at the other end a discharge opening, the sides of the barrel sloping toward said discharge. opening, of a series of barrel-discharging buckets within the barrel, said buckets closed at their inner ends and converging to the discharge opening and tending constantly to drain off ithe contents of the barrel duringthe entire mixing operation, a closure fitting said discharge opening to revolve with the barrel and prevent the discharge thereof,

and means mounted upon a stationary part of the framework to be motionless during the revolution of the barrel and pivotally connected to the closure about'at the axis of revolution of the barrel for opening and gate in a manner to permit the same to vi-- brateslightly faoewise to accommodate itself to said discharge opening. v I

4. In a mixing machine, the combination of a mixing barrel mounted for revolution and having charge and discharge openings at the axis of revolution, buckets converging to the discharge opening from the opposite sides of the barrel, 'a" gate revolving with the barrel and closing said discharge opening, means upon a stationary part of the framework and normally stationary during the-revolution of thecbarrel for opening and closing the gate independently of any mo vement of the-barrel.

5.' In a mixing machine, the combination of a' mixing barrel mounted for revolution f and having a discharge openingat the axis of revolution, the sides of said'barrel'slopr' ing toward said discharge opening, barreldlschargingblades converging to said dis chargeopening and closed; at their inner en'ds ,-said blades tending constantly to dischargesaid barrel during the mixing operation, an'annular flaring discharge chute fixed upon the end of saidbarrel around said discharge'open-ing and provided-with a clo-- sure to overcome said tendency" and to revolve' with theflbarrel, and means mountedupon astationary part of themachine and normally stationary during the rotation of the barrel and extending to said closure to I control the same. v I

I of revolution, the sides of said barrel slop- (3., In a mixing machine, the combination of 'a mixing barrel mounted= forrevolution and having a d1scharge openingat the axls ing toward said discharge opening, blades converging to said discharge opening and tending constantly to discharge-the contents of' the barrel, an annular chute fixed upon said barrel around'said discharge opening, a gate within sald chute and releasably secured in said opening to revolve with the barrel and to-prevent discharge of the con-- tents of the barrel, and means mounted upon a stationary part of the machine and normally stationary during the revolution of the barrel and'extending to said gate to control the same.

' 7. In a mixing machine, the-combination a of a.mixing barrel mounted for revolution and having a discharge opening at the'axis of revolution, the sides of said barrel sloping toward said discharge opening, buckets converging to sald discharge opening and chute fixed upon said barrel around said discharge opening; a gate within said chute closing said opening, an arm pivoted upon the framework and'extendin'g within said chuteand pivotally connected to said door,

and means for mechanically holding said": door either closed or open by means of said, arm. I

i i 8. In a mixing'machine, the combination of'a mixing barrel mounted .for revolution and having a discharge opening at the axis of revolution, the sides of said barrel sloping toward said discharge opening, buckets converging to said discharge opening and closed at their inner ends, a gate for closing said openingyan arm pivoted upon the framework and pivotally connected to said gate, a lever connected to said arm, a releass gate open, and means -controlled by said lever for locking thegate closed.

9. In a mixing machine, the combination 'ofa mixing barrel mounted for revolution 'closedat their inner ends, and an annular and having a discharge opening, ,b u c kets converging to said discharge opening, a gate.

closing said opening; anarm/pivotally connected to said gate, a rock shaft mounted. upon the framework, said arm fixed to said rock shaft, a lever also mounted upon theframework. a link connecting said lever to a second arm upon' said rock shaft; said lever and link being so 'mounted 'as'to act 'as a toggle for springing the gate shut and looking it .in its closed position, and a latch for holding. the lever in'position when the gate is open. I

. 10. 'In a mixing machine, the combination of a revoluble mixing barrel having at one end a discharge opemng, said barrel formed with three sides which slope toward the "discharge opening, and vanes extending along the intersections of said sides in such a-manner that each-blade cooperates with -'the next side to form a bucketcapable of discharging itself exteriorly of the barrel when the blade is-a'bove the axis of revolution, one side edge of each blade intersectthe bodyof the next blade at the end of 100 able latch engaging said lever 'to hold the i 11. In a mixing machine,'the combination v with a mixing barrel and an inclined charging chutetherefor, of a hopper above said Q chute and having a trap so hinged that when it is opened it'may swing down and form an apron within said chute, ahandle connected to said trap, and means normally locking said trap closed; said locking meansbeing in the form of a toggle extending from said -handle to the wall of said hopper.

12. In a mixing machine, the combination with a cubiform mixing barrel truncated at opposite apices, of a pan of annular wheels between which said barrel is disposed, a pair of triangular fiat plates attached to said wheels and having bevel flanges receiving the truncated ends of said barrel and secured thereto, androllsupon which said wheels ran; said triangular plates having central openings through which the barrel is charged and discharged.

13. In a mixing machine, the combination witha cubiform mixing barrel truncated at its opposite apices, of a pair of annular "wheels between which said barrel is dis' posed, rolls supporting said wheels, a pair of triangular frames secured upon the inner sides of said wheels, and having bevel flanges receiving the truncated ends of said barrel and secured thereto, said frames having central openings, an annular cone-like mouth constricted at its outer end and secured upon the outer side of one of said frames at the charging end of the barrel, and an inclined chute upon the framework and extending within said mouth and conforming closely tothe same, and dischargingvanes mounted within the barrel.

14. In a mixing machine, the combination with a cubiform mixing barrel truncated at its opposite apices, of a pair of annular wheels between which said barrel is disposed, rolls-supporting said wheels, a pair of triangular frames secured upon the inner sides of said wheels and having bevel flanges receiving the truncated ends of said barrel and secured thereto, said frames having central openings, an annular cone-like mouth constricted at its outer end and secured upon the outer side of one. of said frames at'the charging end of the barrel, an inclined chute upon the framework and extending within said mouth and conforming closely to the same, discharging vanes mounted within the barrel and converging'towardthe axis of angular frames, an annular discharge-chute extending from said vanes and revolving with said barrel, and a gate within said discharge chute.

15. In a mixing machine, the combination with a cubiform mixing barrel truncated at its opposite apices, of a pair of annular wheels between which said barrel is disposed, rolls supporting said wheels, a pair of triangular frames secured upon the inner sides of said wheels and having bevel flanges receiving the truncated ends of said barrel and secured thereto, said frames having circular central openings, an annular cone-like mouth constricted at its outer end and secured upon-the outer side of one of said frames at the charging end of the barrel, an inclined chute projecting within said mouth, said chute provided with a vertical flange plate, a vertical guard-plate to which said flange plate is secured, means supporting said screen and chute, and means for discharging the contents of the barrel through the opening in the-other of said triangular frames.

16. The combination of a revoluble cubiform mixing barrel having at one end a charge opening and at the other end a discharge opening, discharge blades within the barrel and extending along the sides thereof, said sides and blades forming buckets, a discharge chute upon said barrel, said barrel being so mounted that said buckets in each revolution are carried above said chute but decline toward the same, to tend to discharge themselves through said chute, a dischargecontrolling part movable to different posi 'tions with respect to said chute, in one of which positions it prevents discharge from the buckets through said chute, and in the other of which positions said discharge may occur, and manipulable means extending to a stationary part of the framework for shifting said discharge-controlling part from discharging to nondischarging position; whereby the barrel may be rotated in a direction to discharge the contents, but such discharge may be prevented by adjusting said discharge-controlling part during the revolution of the barrel,-whereby the cycle of charging, mixing and discharging may be repeated Without stopping the barrel.

I WILLIAM J. JUDD. Witnesses:

B. C. STIGKNEY, WILLIAM M. HILnER'r.

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