US1025462A - Mixing-machine. - Google Patents

Description

O. T. FOOTE. MIXING MACHINE. APPLIOATION rILED MAR. 80, 1909.

1,025,4=62. Patented May 7, 1912.

8 sHnETs-SHBBT 1'.

' d' f 020712 MW C. T. FOOTB. MIXING MACHINE.

APPLIOATION rILnD mmso, 1909.

1,025,462. Pana May 7, 1912.

3 SHEETS-BHET 2.

O. T. FOOTE. MIXING MACHINE.

APPLIoATIoN PILED 14.43.80, 1909.

1,025,462. Patena May 7, 1912.

3 SHfiETS-SHEBT 3.

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UNITED STATES PATENT OFFICE.

CHESTER T. FOO'I'E, OF NUNDA, NEW YORK, .ASSIGNOB T0 FOOTE MNUFACTUR'ING COMPANY, OF NUNDA, NEW YORK, COPARTNERSHIP.

MIXING-MACHINE.

Specificaton of`Letters Patent.

Patented May '7, 1912.

To all whom 'it may co'n ccm:

Be it known that I, CHEs'rER T. Foo'rE, a citizen of the United States, residing at Nunda, in the county of Livingston and State of New York, have invented certain new and useful Improvements in Mixing- Machines, of which the following is a specification.

My invention relates to a machine for mixing two or more materials to form concrete, and it relates more particularlv to a batch charging-apparatus into which the materials to be mixed are deposited and from which said materials are delivered to the mixing-mechanism.

My improved charging-apparatus is illustrated in the drawings, which form part of this specification, in conjunction with' a.

batch-mixer, so called on account of mixing a quantity of material and "discharging the same previous to the introduction into the miXing-machine of an additional quantity ofmaterial.

The object of my invention is the production of an improved charging-apparatus held ata comparatively low point with reference to the position of the charging-open-- ing of the miXing-machine so that the workmen can conveniently shovel or otherwise deliver the material into the apparatus 1n a quick and convenientf manner and without being lcompelled to lift the material any considerable height from the ground.

With this and other objects in view the invention consists in the construction, arrangement, and combination of parts to be hereinafter described and particularly pointed out in the subjoined claims.

Tn the drawings,-Figure 1 is an end elevation of a complete mixing-machine equipped with my invention., Fig. 2 is 'a transverse section taken through the charging-apparatus, that port-ion of the frame to which said apparatus is pivotally secured and the adjacent portion of the mixingdrum; the section being taken on line 2 -2, Fig. 3. Fig. 3 is a side elevation of a portion of the miXing-machine.' Fig. 4 is a horizontal section taken on line 4-4, Fig. 1. 5 is a horizontal section taken .on line 5-5, Fig. 3. -Figs 6 and 7 are perspective views of the coperating castings secured to the outlet spout of the chargingrear traction-wheels o are mounted. Similar tra'ction-wheels may be provided atthe front end of the frame so that the machine can be moved about, as may be desired for convenience in operation.

D designates supporting-bars which are bent into substantially V-shape between 4their ends and which .have alined end portions clamped in boxes E secured to said I-beams; said boXes being of any pr-acticable construction, so long as they .serve to securely clamp the bars against rotation. The ends of said supporting-bars have cast supporting-members F, F1 secured thereto and to the members F, located at one side of the machine, a side plate f is secured. To the supporting-members F1 at the opposite side of the machine an upright frame G is secured on which thecharging-apparatus, to be hereinafter described, is supported.

Mounted for rotationon the supportingbars D between the cast supporting-members F, Fr and the boxes E are supportingrollers H on which the mixing-drum H1 is supported. Said miXing-drum may be of any suitable construction but is herein shown as comprising two oppositely-directed coneshaped members, 71, kl having circular tracks L2 which roll upon the supporting-rollers The drum is also provided with gearrims I into which mesh gear-Wheels z' driven by any suitable power-motor and causing the mixing-drum to revolve. Said drum has miXing-wings J secured to the inner side of its conical walls and it has a charging-opening J1 at one end and a similar opening at its opposite end to permit of discharging` the concrete.

K designates a discharge-chute which may be swung into or out of the dischargeopening asmay be desired. When swung into the discharge-opening, as shown in Fig. 1, the material is delivered into the chute and from the same to the ground or into a wheel-barrow or other receptacle placed beneat-hit.

The upright supporting frame G is preferably constructed of two members g, 91 formed of angle-iron and bent inward at their upper ends where they are connected togetherby a casting G1 having a pulley (12 rotatable therein, and in ,addition to said casting G1 the uppe-r ends of said members Zg, g1 are tied together by a tie-plate 93. VThe upper end of the supporting-frame G is braeed by an inclined bar L having one end secured to said tie-plate, as at Z,'and its other end secured to the side plate f, as at Z2, and it hassecured thereto a casting Z3 on which is rotatably mounted a. pulley lt.

,Pivotally secured to the upright support- H rng-frame G at a fixed point is a charginghopper M comprising a substantially rectangular box-like material-receiving portion m, a hopper-portion m1 at' the7rear end'of said box-like portion, and a discharge spout mzat the small end of said hopper portion. Said charging-hopper has a yoke-like cast- I ing N secured thereto at a point where the .hopper-portion m1 meets the spout-portion m2, and secured to said yoke-like casting is a substantially semi-circular tie-member N1 which also serves to 'secure the spout m2 to the hopper-portion m1 of the charging-hopper. The yoke-like casting has two; opposite bosses n and it is bored through centrally of said bosses, as at nl, to receive a pivot-bolt or shaft O journaled in bearingboxes o at' the upper ends of the support-ingmembers F1;

For the purpose of bracing the hopper and a relieving the yoke-like casting N of strain when swinging the charging-hop'per upward into the position 'shown with dotted lines `in Fig. 1, inclined tie-bars P are provided which have their outer ends secured' to the side walls of the rectangular 'portion m and their inner ends secured to castings P1 located between the yoke-like casting N and the bearmg-boxes o and having the pivot-pin or shaft O passed therethrough. Said tie-bars r diverge from their points of connection to in which the material is temporarlly held ,i i 1,o25,482

and which, upon swinging the charginghopper upward, will deliver said material into the hopper-portion m1 and cause the same to be delivered from the discharge or delivery-spout m2 into the miXing-drum.

When' the'charging-hopper is lowered or in receiving position the receiving bucket or rectangular-portion m is in a substantially horizontal position and the hopper-portion and spout are in an inverted position. For the purpose of elevat-ing said charging-hopper or moving the same into charging position a bail R is pivotally attached to the bueket-portion thereof and has one end of a cable-r secured thereto which passes upward overthe pulley 92 at the upper end of the supporting frame G, thence downward and around the pulley Z'* on the brace-bar L, and thence to a suitable hoisting-machine located on the frame A of the mixing-machine, or at any other point.

The materials or ingredients to be mixed are shoveled or otherwise deposited into the receiving bucket vm of the charging-hopper whensaid hopper is in lowered position and whenthe materials `are deposited in said bucket in proper quantities and proportions, the hoisting-machine will be operatcd to draw the hopper upward by the cable 1". -During this upward movement the bail R swings upon its pivots and comes in contact with a stop-bar S extending outward from the upper end of the supporting-frame G, thus limiting the upward movement of the hopper; and for the purpose of holding the hopper steady while in elevated position, a stop 8 is secured to the bail and 1s engaged by the hopper, as shown in dotted lines at 81, Fig. 1. a w o During. the upward movement of the charging-hopper, the materials are delivcred from the receiving-bucket m, thereof into the hopper-portion m1, and the position of the hopper-portion m1, as it passes above the horizontal plane in which the pivot-shaft O is located, causes the materials to be crowded toward the charging or delivery spout m2, which latter has been 'moved to extend into the miXing-drum, as clearly shown at 82, in Fig. 1, and from said spout, the materials are charged into the miXing-drum. v

In order that the materials in the charging-hopper may be delivered to the mixingdrum in a wet condition, a water-tank or bucket T is provided and is so arranged that it may betilted to any extent deslred for the purpose of delivering water therefrom in measured quantities into the charging-hopper when elevated. At opposite sides of this water-bucket, two hollow castings t are secured into which are fastened spindles z1 passing through brackets tz secured to the upright' members of the supporting frame G; and to prevent lateral movement of said bucket, each of said spindles has a collar t3 secured thereto which bears against the inner side of the adjacent bracket through which the spindle passes. Said spindles rock within the brackets -t2 and one of the spindles terminates in a crank-arm 254, to the outer end' i arm t* is permitted to swing in one direction only and for this purpose' a stop u is pro-` o vided which extends outward from the supporting frame G and against which the crank-arm t* bears when in normal position. The extent to which the water-bucket is tilted is regulated by a stop' V adjustable on a segment or curved rod V1 and adapted to limit the swinging movementof the crankarm. swung upward governs the amount of water discharged from the bucket and the bucket can only be drained of its entire contents when its outer wall i's swung into or inclined below the horizontal.

In order to supply the water bucket with water as it'is needed, a water-pipe VV, supplied with water in any suitable manner extends upward along oneof the upper members of the frame G and has at its upper end a horizontal portion 'w which is provided with a down-spout 'w1 located directly above the water-bucket. Said water-pipe is provided with a hand-valve 102 within Convenient reach of the operator so that he may conveniently supply water' to the bucket and shut-off the same when the desired quantity is supplied.

For the purpose of determining when to shut-off the' supply of water to the bucket,

the latter is provided in one of its walls with a number of perforations near the upper edge of said wall, so that when the water reaches the height of the perforations, it issues through said perforations to inform the operator 'that the proper quantity of water has been supplied.

The ends of the supporting rods D on the charging side of the mixing-machine have props Y secured `thereto, each of which consists of an upper me-mber 11'/ intol which the end. of the supporting rod is placed and a lower member yl having its upper end threaded into the lower lend of said upper member and by reason of the threaded connection of said members, said props are extensible and relieve the supporting-castings F1 of considerable strain.

'VVhen the parts are in the position shown The extent to which the crank-arm ising-drum, the cable 7' is drawn upon .by a suitable hoisting-machine to cause the charging-hopper to swing upward through an arc of a circle and assume the position shown in dotted lines in said figure. As soon as the hopper reachest the limit of its upward movement, the operator takes hold of the rod U to cause the Water-buck-et to be swung from the position shown in full lines i 4the upward swinging movement of said charging-hopper. Upon releasing the rod U the water-bucket will swing into normal p0- sition, after which the cable 1" is paid out to. perniit the charging-hopper to gravitate and swing with its large or receiving end against the ground for another refilling. Meanwhile, the drum continues to rotate and thoroughly mix the materials preparatory to discharging the same from the drum in any suitable manner.

The discharge chute K illustrated' is clearly described in a co-pending application filed August 21, 1907, and given Serial No. 389,551, said chute being 'arranged to swing into or out' of the discharge-opening of the vmixing-drum and when swung into the drum, asshown in Fig. 1, the materials, (luring the course of their being mixed, fall into the chute and from the latter are delivered to the ground or into a wheel-barrow or other receptacleplaced beneath the projecting end of the chute. When said chute is swung outward, the inner end thereof is swung clear of the material being mixed so that a continuous discharge of the material is not possible.

`After the materials are discharged from the mixing-drum by means of the chute K the hopper will have been supplied with the desired quantity and proportions of material and is ready to be elevated again. Thermaterial is therefore delivered to the mixingdrum in *batch and is also mixed and discharged in *batch.

While my improved charging apparatus is especiallyadapted for batch mixers, itcan also be used in conjunction with a continuous or any other form of mixer, and when used in conj unction With a continuous mixer, it is only necessary in order to obtain a continuous discharge from the mixer that a sufficient quantity of materials be delivered into a receiving hopper opening into the feedingmechanism which will deliver the material to the mixing-mechanism of the machine at such a speed that the charging-hopper may. be refilled and 'elevated before the batch previously delivered into the receiving-hopper Will have been entirely diseharged, therefrom.

Having thus described my invent-ion,what I c1aimiso 1. The combination withl a mixing-machine having an upright frame,- of a hopper for feeding materials into said machine, a subst-antially reotangular bucket mounted to tilt on said frame above said hopper and having its spindles provided with a orankarm, a curved member secured to said frame, and a stop on said curved member and adapted to be engaged by said crank-arm to limit the extent to which the bucket may be 'tilted, said bucket being held in operative relation to said charging-hopper.

2. Thecombination with a mixing machine havlng an upright frame comprising pivotally supported at its outlet end by said at its receiving end, means for swinging said hopper upward, and a tilting bucket mounted in said frame above the diseharge end of said hopper and adapted to discharge its contents therein when tilted.

In test-imonywhereof, I have afiixed my signature in the presence of two subscribing Witnesses.

CHESTER T. FOOTE. Witnesses:

GEO. E. BLOOD, F RED L. DAKE.

'upright members and normally in inverted position, and provided with a swinging'ball

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