US1012729A - Concrete-mixer. - Google Patents

Description

I. K. SHERO.

UONCRETE MIXER.

APPLICATION FILED NOV. 23, 1910.

Patented Dec. 26, 1911.

3 SHEETS-SHEET 1.

I. K. SHERO.

001mm: MIXER. APPLICATION FILED NOV. 23, 1910.

1 ,01 2,729 Patented Dec. 26, 1911.

mums-sum 2.

I. K. SHBRO.

CONCRETE MIXER.

' APPLIUATION FILED NOV. 23, 0. I 1,012,729. 1191 Patented Dec. 26, 1911.

3 SHBBTSSHEET 3,

UNITED STATES PATENT OFFICE.

I ISAAC K. ysnnno, or oKEMAn, OKLAHOMA.

CONCRETE-,MIXER.

Specification of'Letters Patent.

Application filed November 23, 1910. Seria1No. 593,912.

-in a continuous manner to effectively mix the ingredients, the machine being-so arranged that the materials can be continuously fed into one end of the drum andcont-inuously discharged from the other end, or intermittently fed and discharged, as required, the drum being equipped "1th an improved construction of end gate to control the discharge.

A further object of the invention is, to produce in a machine of thischaracter, an improved construction and arrangement of I end gate for the mixing drum, said end gate changed as required.

being associated with and connected to a discharge chute preferably extending trans versely of the machine at the discharge end of the mixin drum, the chute being so mounted that it may be easily manipulated by a single operator and so related to the end gate that the movement of the chute to its operative position will move theend gate away from the discharge end of the mixing drum and permit the mixedmate-' rials to flow out.

The invention also has for its object a mixing 'drum freely suspended from endless chains supported by sprockets on an actuating shaft, the weight of the drum and the contents thereof tending to securely hold the drum inengagement with the chains whereby to impart to the drum the-necessary rotary movement," a mixing drum which is provided with a novel and efficient arrangement of mixing blades and discharge sleeve at the discharge end of the drum, and a mixing drum wh ch is supported in and by a tilting and adjustable frame, whereby the inclination of the drum may be easily The invention also has for its object an improved initial mixing device forming part of the feed mechanism for the feeding drum and embpdying an improved rotary elevator preferably operated in the same manner as the mixing drum and from the same driving elements, the elevator being' adapted to receive the ingredients from the several hoppers of the feeding device simultaneously to tumble the same in order that the ingredients may be at least partially mixed before they are passed to the mixing- 'drum. And the invention also has for its object to generally improve this class of de-.

PatentedDec. 26, 19 11.

vices and to render them more eflicient in operation and commerciall desirable.

With these and otherv o jects in view as will more fully appear as the descriptionproceeds, the invention consists in certain constructions, arrangements and combinations-of the parts that I shall hereinafter ,fully describe and claim.

For a full understanding of the inven- I tion, reference is to be had to the following description and accompanying drawings,,in

which: a

Figure 1 is a side elevation of a concrete" mixing machine constructed in accordance with my invention; Fig. 2 is a top plan view of the machine; Fig. 3 is a vertical longi tudinal section thereof; and Fig. 4 is a transverse sectional view of the lower portion of the discharging apparatus.

Corresponding and like parts are referred to in the following'description and indicated in all the views of the drawings by. the same referencecharacters.

The supporting framework of, my

hopper 6 and stone hopper 7. At one corner of the stone hopper 7 the casing 4 is formed. with a right angularly shaped par- 10.5

tition 8 designed to produce a cement hopper provided at] its top with a hinged or 3 proved machine includes longitudinally exother door, the sand hopper being provided V at its top and at the rear end thereof with a'shield 11. v The materials are desi edIto be passed from the hoppers by a ceding dev ce 12 mounted upon a transversely extending. shaft 13 journaled as'at 14. The

feeding mechanism'also includes a circular rotary elevator -20-formed with a flanged I partition5 dividing the easing into asand fnom the cross bar 34 and which are con periphery and with channeledsides in which buckets 21 are secured, the buckets being with trunnions 27 mounted in a bearingbracket 28 secured to and extending upwardly from the cross bar 19. A spout 29 is connected to the rear edgeof the casing 4 and is adapted to extend into the receiving end of a preferably tapering mixing drum 30, the larger end of the drum being the receiving end thereof. The spout 29 is mounted above the casing/l and within the rotary elevator20, and hence as the latter rotates, the ingredients will be at least partially mixed in'the buckets 21 and will be dropped onto the spout 29 and conveyed by the latter into the mixing drum 30. v

The mixing drum 30 is formed in the present instance with two channeled circumferentially extending tracks 31 around which endless chains 31 extend to directly support the drum and to rotate the same about its longitudinal axis as the chains travel. These chains are in turn supported by and work on sprocket wheels 32 which are secured to a longitudinally extending shaft 33. This shaft is journaled near one end in a cross bar 34 which extends transversely and which has at its ends trunnions 35 mounted for a turning movement in verticalstandards 36 secured at their lower ends to the sills 1 Connected to the cross bar 34'are two longitudinally extending parallel side .bars 37 which project forwardly nected near their-forward ends by a cross bar-38, the cross bar "34, longitudinal bars 37 and'cross bar 38 forming a tiltable suspension frame for the drum. The longitudinal bars 37 of this frame have forwardly projecting ends 39 which embracethe adj acent posts 40 of a derrick which is mounted on the framework near the front end of the latter and which will be hereinafter more specifically described, said adjacent posts 40 being formed with apertures 41 designed to receive a supporting rod 42 upon which the forwardly projecting ends 39 of the bars 37 are adapted to rest. It will thus be seen that by varying the vertical por. sition of the supporting rod 42, the drum supporting frame may be tilted and held atdifferent inclinations so as to give more or less inclination to the mixing drum 30.

The drum shaft 33 is connected at its rear end to the shaft 25 before mentioned, by means .of a universal joint 43 so arranged that the shaft 33 may be tilted, as required, without materially changing the pitch or position of the shaft 25. A bevel gear wheel 44 is secured to the drum'shaft 33, said gear wheel meshing with a bevel pinion 45 secured to the inner end of a relatively short transverse shaft 46. The shaft 46 is journaled in a bearing 47 secured upon a ledge 48 formed on one of the longitudinal bars 37. A pulley or band wheel 49 is secured to the outer end of the transverse shaft 46 and a driving belt 50 extends over the said pulley and also around a pulley 51 mounted on the driving shaft 51? ofa motor 52 of any desired type, either electric, gasolene, or

steam. A sprocket wheel 53 is also secured to the transverse shaft 46 and is connected by a chain 54 to a sprocket wheel 55 on the feedingshaft 13. The mixing drum 30 contains any desired number of mixing blades 56, the same being arranged in three spirally extending rows in the present instance, and being of angular formation riveted or otherwise secured to the drum, the present arrangement producing a substantially continuous spiral feeding and mixing means from the receivin to the discharge end of the drum. At the discharge end of the drum the same is provided on its interior with a concave and rearwardly tapering trough 57 adapted to catch the materials as they are fed to this end of the drum in the rotary movement thereof and discharge the same. An end gate 58 is mounted at the discharge end of the mixing drum 30, said'end gate in the present instance being in the-form of a plate or disk, as shown, and

being supported by springs 59 that are. secured to a laterally disposed discharging andtransferring chute 60, This chute is formed with depending arms 61' by which it is .'tiltably mounted intermediate of its ends on a rod 62 secured to and supported by transverse sills 63., The chute is provided at one end with a handle 64 by which it may be manipulated, and it will be understood that when the chute is in its normal inoperative andmore nearlyhorizontal position, the end gate will be positioned across. the

discharge end of the mixing drum so as to I retain the materials therein as long as required. Upon tilting the chute 60 by rais ing up upon the handle 64, the chute will be moved to a more inclined and operative position and at the same time, as the end gate is carried by the chute, the end gate will be moved away from the discharge end of the mixing drum tc permit the materials to flow out of the latter. It is obvious that the chute may discharge the materials into any desired receptacle, ,as for instance into an elevating and dumping bucket, such as that By forming the gate 58 considerably larger than the discharge end of the mixing 7 drum 30 and connecting it to the chute 60 by the springs 59, the gate will be retained in closed position no matter-to what extent the discharge end of the drum may be adjusted by means of the pins 42 and apertures 4.

A sprinkling pipe 103 extends along one side of the mixing drum 30, being supported preferably by the standards l8 and rearmost derrick posts 40, the spray pipe turning into the receiving end of the drum to sprinkle the contents thereof. The pipe is provided with a c ntrolling valve 104 of any desired vtype, nd a hose 105 is connected to the valved end of the sprinkling pipe 103, being intended to convey ter to the pipe from any suitable source of supply, (not shown).

From the foregoing description 'in connection with the accompanying drawing, the operation of my improved concrete mlxing machine will be apparent. In the practical use of the apparatus, the materials to be mixed are fed into the hoppers and are passsed therethrough into the rotary elevator 20, from whence they are dropped onto the spout 29 and fed by the latter into the receiving end of the mixing drum 30. The weight of the drum and its contents insures the rotation of the drum as the shaft 33 rotates, and the ingredients will be thoroughly commingled by the action of the blades 56, being sprayed with water from the pipe 103. The concrete may then be discharged either continuously from the drum onto the laterally disposed discharg-' ing or transferring chute 60 and be trans ferred thereby into wheelbarrows or'pther receptacles, or if desired the discharge of the concrete from the drum may be intermittent and controlled by the operator at the I handle 64.

Having thus described the invention, what is claimed as new is:

1. In a concrete mixing machine, a su porting frame including vertical standar s, a bearing carried by said standards and swinging vertically thereon, a shaft mounted intermediate its ends in said bearing,

chain wheels carried by said shaft at opposite sides of said bearing, a mixing drum, chains engaging the chain wheels and extending around the mixing drum, and means for vertically adjusting said shaft to cause it to swing with said bearings.

52. In a concrete mixing machine, a supporting frame, a IIllXlIlg' drum, means for rotatlng sa1d drum, a gate operating to close the wav the discharge end of said drum, a chute mounted to swing beneath the discharge end of said drum, and yieldable connecting means between said'chute andgate.

3. In a concrete mixing machine, a su porting frame including vertical standar s, a bearing member carried by said standards and swinging vertically thereon,. a transverse member having a bearing, longitudinal bars connecting said bearing member and transverse member, a shaft mounted intermediate its ends in said bearings, chain wheels carried by said shaft at opposite sides of said bearing member, a mixing drum, and means for vertically adjusting said transverse member and the shaft supported thereby to change the inclination of said drum. v

4.. In a concrete mixing machine, a framework, standards extending upwardly from the framework, across bar mounted to turn in said standards, side bars connected at one end to said cross bar, posts extending upwardly from the framework, another cross bar connected to said side bars near the other ends of the latter, a rod adapted to be.

passed through said posts at different elevations and arranged to support the last named ends of the sidebars, a shaft journaled in said cross bars, sprocket wheels carried by said shaft on opposite sides of the first-named cross bar, chains passing around said sprocket wheels, and a mixing drum suspended by said chains.-

5. In a concrete mixing machine, a framework, standards extending upwardly from the framework, a cross bar mounted to turn in said standards, side bars connected at one end to. said cross bar, posts extending upwardly from the framework, another cross .bar connected to said side bars near the other ends of the latter, a rod adapted to be passed through said posts at different elevations and arranged to support the last named ends of the side bars, 'a shaft journaled in-said cross bars, sprocket wheels car.- ried by said shaft on opposite sides of the first-named cross bar, chains passing around said sprocket wheels, a mixing. drum supported by said chains, a gear wheel secured to'said shaft, a transverse shaft supported on one of the side bars, a pinion meshin with said gear wheel and connected to sai transverse shaft, a motor, and a driving connection between said motor and thetrans verse shaft.

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

ISAAC K. SHERO.- 1 8.

Witnesses: I

' C. W. MOULEX,

W. S. ATTERBEnRY.

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