US949698A - Mixing-machine. - Google Patents

Description

A. J. GROPP.

MIXING MACHINE.

APPLICATION FILED SEPT. 17, [1908.

Patented Feb. 151, 1910.

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MIXING MACHINE. APPLIOATION FILED'SBPT. 17, 1908.

Patented Feb. 15, 1910,

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ANlDIlEtE'W'v J. GROPP, OF CHICAGO, ILLINOIS.

MIXING-MACHINE.

Specification of Letters Patent.

Patented Feb. 15, 1910.

Application filed September 17, 1908. Serial No. 453,413.

My present invention has relation to improvements in a mixing -inachine,which is more especially lntended for mixing ingredients or materials employed for the production of concrete for any'of the usual pur poses thereof, but may be used for thor oughly mixing ingredients or materials of various kinds for other purposes; and it consists in certain peculiarities of the construction, novel arrangement, and operation of the various parts thereof, as will be hereinafter-more fully set forth and specifically claimed.

The principal objects of the invention are to provide a mixing machine which shall be simple and inexpensive 111 construct10n,'

strong, durable and efiicient in operation.

Numerous other objects and advantages of the invention will be disclosed in the subjoined description and explanation.

Referring to the accompanying drawings which serve to illustrate the invention-Figure 1 is'a' view in elevation of the'discharging end of the mixer, showing the discharging chute mounted near the mixer and ex- I tended thereinto, and the means for operating said chute; Fig. 2 is a silnila-rview in elevation of the receiving or charging end of the machine; Fig. 3 is a fragmental view in elevation of the central portion of the head of the mixer which is located-at its discharging end, showing a portion of the means employed for. returning to the interior of the mixer the material which may be spilled from the chute in its act of discharging;

Fig. 4 is an enlarged perspective view of a portion of the inner surface of said head,

showing one of the inwardly directed tunnels thereon; Fig. 5 is a similar View of the outer surface of a portion of said. head, showing one of the inwardly directed deflectors thereon; Fig. 6 is a vertical sectional view taken on line (36 of Fig. 1 looking in the direction indicated by the arrows, showing the discharging chute iii-full lines in about the position it will occupy when in the act of discharging the material and by dotted lines in about the position it will occupy when arranged to deflect the material inwardly of the mixer; Fig. 7 is a plan sectional view taken on line 7-7 of Fig.2 looking in the direction indicated by the arrows; Fig. 8 is a somewhat enlarged sectional view of a portion of the feeding or charging end of the mixer or drum, showing one set of the means for guiding the material from the receiving or charging chamber or easing into the mixing receptacle; Fig. 9 is a cross-sectional view of like partsfliig.

10 is a perspective view of a portion of the head-of the mixing receptacle at the charging end thereof, showing one of the guide flanges or deflectors secured thereto; Figs. 11 to 15, inclusive, are detail views of various parts of the machine which will be referred to in the following description.

Like numerals of reference, refer to corresponding parts throughout .the different views of the drawings.

The reference numeral 20 designates the mixing receptacle which is in the form of a drum or cylinder and may he madeof any suitable size and material, and has circumferentially mounted on its outer surface near each of its ends a band or circular gear 21 which mesh with gears 22 mounted on a driving-shaft 23 which is suitably journaled on asupporting-frame 24 of the ordinary or any preferred construction. and which shaft may be driven by any. suitable means. Each of the gear hands or rings 21 is provided with a circular or band-like portion which is adapted to rest on rollers 26 journaled on suitable brackets 26 mounted on. the supcharging end a centrally apertured head 27 and 'at its other or discharging end a head 28, which is also provided with an opening 29 at its center for the reception and operation of the discharging chute 30 which extends some distance into the interior of the drum and projects out *ardly therefrom through the opening 29, as .is clearly shown in Fig. 6 of the drawings. in which view, as well as in Figs. 2 and: 7, it will be seen that the front or' charging end of the mixing receptacle 20 is provided with a charging chamber or casing 3t which surrounds the front portion or end of the mixing receptacle 20 and projects at 'its front portion some distance in front of the head 27. As shown the casing 31is-annular when viewed from the front of the machine, but

is substantially U-shaped in cross-section, that is to say, 1t has front and rear walls 32 and 33, respectively, which areunited at their outer edges by a portion 34, thus forming the annular charging casing indicated as a whole by the reference numeral 31, which. casing as before stated surrounds the front portion'of the mixing receptacle and may be secured thereto in any suitable or-wellknown manner, but in such away that the front wall 32 of the casing will be located at a distance in front of the head 27 of the mixing receptacle.

It will be observed by reference to Figs. 2, 6 and 7 that the opening in the wall 32 of the charging casing is much larger than the central opening 27 in the head 27 at the charging end of the mixer, thus permitting the materials tobe readily deposited in the casing 31 between the front wall 32 thereof and the head 27 of the mixing receptacle. I

The drum or receptacle 20 is provided inwardly of its head 27 with a series of 0 enings 36 which are preferably locate at equal distances apart and communicate with the channeled charging casing 31, as will be readily understood by reference to Figs. 2, 6 and 8 of the drawings. Located diagonally of the charging casing and the head 27 of the mixing receptacle are a series of guiding plates 37 which recede from the Wall 32 in a direction opposite to that of the movement of the mixing receptacle and are joined to the head 27 at or near the front of the openin s 36 therein.

Extended from the periphery or outer wall 34 of the casing 31 are a series of inwardly and rearwardly inclined guide lates 38 which are secured by means of a auge 39 on each of said plates to thehead 27 and have their rear ends joined to the drum 20 at the rear of the openings 36 therein. Thus it will be seen by reference to Figs. 8, 10

and 11 of the drawin 's that the flanges 39 on the plates 38 will form one vertical wallfor said plates while the wall 33 of the charging casing will form another wall to each of said plates, thus providing inclined passage ways to guide the material from the casing 3l.to the interior of the drum or mixing receptacle.

Secured to the inner surface of the receptacle 20 at or near the front end of each of the openings 36 therein is a deflector which consists of a tapered plate 40 which is vertically located with respect to the drum at the inner edge of eacl of the openings there in, andis secured to the inner surface of the head 27 at a distance therefrom by means of a plate-or portion 41, thus forming inwardly and rearwardly directed guide-Ways on the inner portion of the mixing receptacle which ways communicate with those formed between the wall 32 by the members 38 and 39 and located in the casing 31 as .bove described. The members 40 and 41 of said deflectors and the head 27 to which the members 41 may be joined, form tunnel-like'chutesleading from the easing 31 into the interior of the mixing receptacle and. in the direction opposite its movements.

Diagonally disposed from near the head I 27 and partially across the inner surface of the receptacle 20 are a serieof wings 42 which may be secured to the receptacle 20 by means of angle bracltets'43 or otherwise so as to present their edges inwardlyor substantially radially. As shown in Figs. 6 and 7 these wings are located with their ends adjacent tothe head 27 forwardly of the members 411 of the guide-ways leading from the casing 31 to the drum-and incline rearward-1y toward the head 28 of the mixing receptacle' where they terminate slightly in front of a series of scoeps 44 which may be of any suitable shape, but preferably like that shown in the last-named figures of the drawings. Each of these scoops is preferably made of metal bars havin their ends extended forwardly and their mtermediate portions bent rearwardly so that, as the material passes from the wings 42 to. said I scoops, it .Will be retained thereby and carried upwardly in the rotation of the mixing receptacle. As shown, they may be secured at their outer edges to the inner surface of the receptacle 20 by means of angle brackets 45 or otherwise.

Diagonally mounted on each of the dia metrically disposed members 41 is a plate 46 which has substantially the same inclination as the wings 42, and are used for the pur ose of directing the material which mig t pass over said wings inwardly from the charging end of the mixing receptacle.

an annular ring 49 which is bolted or otherwise secured to the head 28, and has at its outer edge or portion an inwardly extending flange 50 which is spaced from the head 28 as is clearly shown in Figs. 6 and? of the drawings.

Diagonally extended across the return easing 48 from its flange 50 to the head 28 are a series of guide plates 51, which recede from the flange 50 to the rear portion of the openings 47' in the head 28 and may be secured at their ends to said flange and head by bolts or otherwise.

Located on the inner surface of the head 28 and inwardly of the openings 47 therein are a series of rearwardly enlarged and three-sided box-like chutes which present their tapered portions forwardly or in the direction of the rotation of the mixing receptacle, and have said tapered ends se- 3 cured forwardly of the opemngs 47 in the of the bars 53, two of the diametrically located ones of which are supported near their inner ends by means of the brackets 54 at a distance inwardly from the wings 42, while the other two of such bars are supported directly at-or near their inner ends on their respective wings.

Mounted on the main or supportingt'rame 24 near the discharging end of the receptacle 20 are two spaced apart uprights 55, each of which is provided with an arm 56 which extend through the opening 29 of the head 28 into the mixing receptacle, and have pivotally mounted thereon and therebetween the discharging chute 30 which has each of its ends open. Journaled on the upper portion of the uprights and on the upper portion of a standard 57 at the rear and one side of the mixing receptacle is a horizontal shaft which has on its outer end a crank-handle 59 to turn the same.

Mounted on the shaft 58 between the uprights 55 is 3 a crank which is pivotally connected at its lower end to a bail 61 secured to the sides l of the chute 30 at a suitable distance from their outer ends.

From the foregoing and by reference to the drawings it will be readily understood and clearly seen that by supplying theingredients or materials to be mixed to the charging chamber or casing 31. which may be done by dumping the material directly from wheel-barrows over the edge of the wall 32 of said casing or otherwise. it will be caused, in the rotation of the drum or mixing receptacle 20, to pass 't'ron". the cars j h1g3] tl'irough the openings 36 by reason of the guides B'Y. 38. 40 and 41 into the receptacle 20 or mixer. of the drum or mixer it is apparent that wings 4-2 which, by reason of their inclina- In the further rotation T tion, will guide it toward and imo the, scoops 4st which will carry it upwardly in batches until they reach a certain point, near the top of the receptacle when by rea- 1 son of the gravity of the material it will fall from the scoops 4.4 into the chute 30 which may be tilted to the position shown by dotted lines in Fig. 6 by means of the shaft 58 and connections uniting it with the chute. Most of the material falling from the scoops it will be deposited in the chute. and as it is inclined inwardly will fall from its inner end to the lower portion of the receptacle 20 where it will be acted upon by the bars and wings 42 in such a mannor as to thoroughly mix or interininglc the ingredients, at which time the chute 50 may be tilted to the posit-ion shown by continuous lines in Fig. 6,when the same operation as above-described will take place, except that the mixed material will be discharged outwardly from the receptacle. As some of the material may fall over the sides of the chute 30 or pass out of the opening 29 in the head 28 of'the receptacle. it is apparent that the return casing 48 will catch the same which, by reason of the guide plates 51, will be caused to pass through the openings 47 and box-like chutes 52 into the interior of the mixing receptacle. I

Having thus fully described my invention, what I claim as new, and desire to secure by Letters-Patent, is

1. In a mixer, in combination, a revoluble drum, having openings in its periphery at the receiving end thereof, means therein to agitate and mixthe material, a charging casing mounted around and along the receiving end of the drum and extended substantially the same length as the openings in the periphery of the drum and extending beyond the periphery of said drum and having an opening in'its end.

In a mixer, in combination, a revoluble drum, having openings in its periphery at the receiving end thereof, means therein to agitate and mix the mater'al. a charging casing mounted around and fllOl'lg the receiving end of the drum and extended substantially the same length as the openings in the periphery of the drum and extei'iding beyond the periphery of said drum and hav' ing an opening in its end. and means to guide the material inwardly from the casing to the drum, and having its front wall extended forwardly and beyond the drum. and means to direct the material inwardly from the casing.

3. In a mixer. in combination. nah-um. having openings in its periphery at the re- 'cciving end thereof. means therein to agilate and mix the material. a continuous series ol ,-ircularly arranged charging the material will come in contact with the pockets located at one end ol the drum, outdrum. a circular head having its periphery contacting with the tops of the pocket walls,

inlets of the pockets outside of said head.

4. In a mixer, in combination, a revoluble drum, having openings in its periphery the receiving end thereof, means therein to agitate and mix the material, a cont-inuous series of circularly arranged recharging pockets located at the discharging end and the open around the discharge opening,

inlets of the pockets being turned toward 10 the axis of the drum, and means to guide the material to the inlets of the pockets outside of the discharge opening. 6

' ANDREW J. OROPP.

Witnesses CHAS. C. TILLMAN, M. A. NYMAN.

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