US699668A

US699668A - Apparatus for mixing concrete.

Info

Publication number: US699668A
Application number: US8272901A
Authority: US
Inventors: Chester T Drake
Original assignee: Individual
Current assignee: Individual
Priority date: 1901-11-18
Filing date: 1901-11-18
Publication date: 1902-05-13
Anticipated expiration: 1919-05-13

Description

No. 699,668. Patented May I3, I902.

c. T. DRAKE.

APPARATUS FOR MIXING CONCRETE.

(Applicati lllllllllllllllllll 3 Sheets-Sheei I.

No. 699,668. Patented Ilay13, I902.

c. DRAKE. APPARATUS FOR MIXING CONCRETE.

(Application filed Nov. 18, 1901.) (No Model.) 3 Sheets-Sheet 2 "Il Q! E ii b Patented May I3, 1902.

c. T. DRAKE. APPARATUS FOR MIXING CONCRETE.

(Appiication filed Nov. 18, 1901.

3 Sheets Sheat 3.

(No Model.)

IIIILS Vmtorv f THE mums Pawns cov PNOTO-LITHO., WASHINGTON n. c.

Tamas CHESTER T. DRAKE, OF CHICAGO, ILLINOIS.

APPARATUS FOR M SPECIFICATION forming part of Letters IXING CONCRETE. I

Patent No. 699,668, dated May 13, 1902.

A plication filed November 18,1901. erial No. 82,729. (No model.)

To ctZZ whom it may concern.-

Be it known that I, CHESTER T. DRAKE, a citizen of the United States, residing at Ohicago, county of Cook, State of Illinois, have invented a certain new and useful Improvement in Apparatus for Mixing Concrete; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates in general tomachines for mixing concrete, and more particularly to conveyers for receiving the concrete from the mixer and delivering the same to any desired point where it is to be used.

In machines of the class mentioned in order that the concrete may be delivered directly from the mixer to the place of use it is necessary to provide a conveyer capable of a horizontal movement around its point of connection with the mixer and also capable of a vertical movement in order to elevate its delivery end to the desired height. It is essential that the mixed concrete should be deposited at all times by the mixer upon the adjacent end of the oonveyer in whatever adjusted position it may be and also that the conveyer should be so constructed that the mixed concrete will be carried to the desired point and there delivered in its mixed condition.

The object of my invention is to provide a concrete-mixer with a horizontally and vertically movable conveyer driven by power communicated thereto in the axis of the kingbolt around which the conveyer is pivoted, the conveyer-belt being so guided to be depressed at its longitudinal center and being provided with a funnelshaped hopper at its delivery end, therebypreventing the ingredients of the mixed concrete from being separated by centrifugal force as it passes from the delivery end of the conveyor.

A further object of my invention is to provide a conveyor for delivering the concrete or other compositions from a mixer which will be simple in construction and efficient in operation.

My invention will be more fully described hereinafter with reference to the accompanying drawings, in which the same is illustrated as embodied in a convenient and practical form, and in which-- Figure 1 is a view in elevation of the conveyer and a portion of the mixer; Fig. 2, a plan view of the con veyer and the portion of the mixer to which it is connected; Fig. 3, a transverse section taken on line 3 3, Figs. 1 and 2; Fig. 4, a transverse section taken on line 4 4, Fig. 2; Fig. 5, a perspective View ofv the bearing-plate upon which the conveyor turn-table is rotatably supported; and Fig. 6, a transverse sectional view taken on line 6 (3, Figs. 1 and 2.

Similar reference characters are used to indicate the same parts in the several figures of the drawings. 7

Reference characters AA indicate the side frames of a support upon which the mixer C is mounted by means of braces a a, secured to and extending above the side frames A A and fixed at their upper ends beneath the horizontallyextending flange 0 at the top of the mixer (J. Mixing-blades C are located within the mixer-tank and are secured to a shaft 0, which is rotated by any suitable power connection. The support for the mixer may be rendered portable by means of wheels 13, located beneath the side frames and supporting the same by any suitable means-as, for instance, the braces a.

Depending U -shaped frames A and A preferably formed of channel-iron, are se cured at their upper ends to the side frames A A near the delivery end of the mixer.

The horizontal portions of the depending frames A and A support beams A A and A, which are preferably made of channeliron opening down wardly,with the hollow portions thereof filled with hard wood, as indicated at a a a. The outer beams A and A may be conveniently cut away at their ends so as to incline toward the centerbeam. Secured to the beams A, A and A is a plate A upon which is secured a ring E and concentric therewith a disk E having a depression therein 6 as shown indetail in Fig. 5. Mounted upon the ring E" is a similar ring E and superposed on the disk E is a disk E, having a projecting portion fitting within the depression e in the disk E The ring E and disk E are rigidly secured to a plate D, preferably rectangular in shape, upon the upper surface of which are supported beams D and D which are preferably arranged parallel and located at the opposite sides of the plate D. A king-bolt E passes through the centers of the disks E and E and also through the plates D andA and is provided with a nut engaging the filling material a of the channel-beam A, through which the kingbolt' also passes.

Secured to the upper surfaces of the beams D and D are'brackets ff, supporting at their upper ends a chute F, which is located immediately below the outlet 0 of the mixer O.

The outer ends of the beams D and D are provided with" circular depressions in which are located tubular extensions g and 9 secured to the corresponding ends of the side frames G and G which constitute the conveyer-frame. Straps cl and d are secured to the upper surfaces of the beams D and D and retain the tubular extensions g and g within the bearings formed therefor. A series of guide-rollers II are located upon rods h, the outer ends of which are journaled in brackets secured to the upper surfaces of the side frames G and G At each end of the guide-rollers H are located conical guides II, which are rotatably supported upon the rods h by means of the integral sleeves h.

A roller K is rotatably supported in the outer ends of the side frames G and G and is preferably journaled in adjustable bearings 7c. Guide-rollers 1-1 H are journaled in brackets depending from the under surfaces of the side frames. A funnel-shaped hopper L is located below the end of the conveyerframe, to which it is secured by straps Z. The outlet of the hopper is preferably provided-with a swinging cover L.

Bifurcated brackets m m are secured to the side frames G and G and serve as bearings between which is supported a pulley M, around which a rope M passes, the opposite ends of such rope being secured to means extending above the support for the mixer, whereby the rope may be wound up and the elevation of the conveyer-frame regulated. The means of winding up the rope M for convenience I have shown as consisting in a roller M mounted within uprights A A secured at their lower ends to the side frames A A of the mixer-support. One end of the rope is rigidly secured to the uprights A while the other end is secured to the roller M above mentioned. The roller M" is provided with a gear-wheel M which is in mesh with a smaller gear-wheel M which may be rotated by means of a crank m A power-shaft N is rotatably supported beneath the mixer and is provided with a beveled gear-wheel n at a point adjacent to adepending post N, in the lower end of which the power-shaft is j ournaled. A double-faced beveled gear 0 is located above the king-bolt E, with its axis in alinement therewith. I

have shown such double-faced gear-wheel as mounted upon a short vertical shaft 0, the lower end of whichis secured within a recess in a casting O The casting O is provided with a recess in its under surface which fits over the head of the king-bolt and is provided with a projecting flange wherebyit is secured to the plate D. The double-faced gear 0 is provided with collars 0, which surround the end of the stub-shaft O and permit the gear .to freely rotate thereon. The teeth on the upper face of the gear 0 mesh with the gear 71. on the end of the power-shaft N, while the teeth on the under surface of the doublefaced gear 0 are in mesh with a gear p, secured to the inner end of a short shaft P, which is journaled in a tubular bearing P, attached to the vertical face of the beam D The end of the shaft P opposite to the gear 19 is provided with a sprocket-wheel P around which passes a sprocket-chain Q A shaft R extends through the tubular extensions g and g on the side frames G and G and is provided with bushings r r, interposed between the shaft R and the interior of the tubular extensions g and 9 A sprocketwheel R is located on one end of the shaftR and is engaged by the sprocket-chain Q A sprocket-chain Q engages a sprocket-wheel R, secured to the other end of the shaft R, and a sprocket-wheel K, secured to the reduced end of the roller K, which projects through the side frame G.

A roller K is provided with reduced ends which are journaled upon the upper surfaces of the beams D and D in the rear of the shaft R. Keeperplates 76 70 are secured over the journals of the rollers K to retain them in their bearings.

The operation of my machine is as follows: The mixed concrete is delivered by means of the rotatable mixing-arms 0 through theoutlet 0 to the chute F, which extends over the inner end of the conveyor-belt G. The endless conveyer-belt G passes around the idle roller K at one end and around the driven roller K at the other end. The top portion of the conveyer-belt is supported by the rollers H H, &c., whilethe under or returning portion of the belt is guided by the rollers H H The elevation of the conveyer-frame is regulated by winding up one end of the rope M by means of the Windlass. The conveyer-frame is then swung horizontally about the king-bolt E to the desired position where the concrete is to be used. The rotation of the power-shaftN through the interposed gearing rotates the do uble-faced gear O,'which in turn rotates the shaft P through the meshing gears, and the shaft P rotates the shaft B through the connecting sprocket wheels and chain. The rotation of the shaft B through the sprocket-wheels R and K and sprocketchain Q rotates the roller K, which drives the conveyer-belt G through frictional contact therewith. The weight of the concrete depresses the central portion of the conveyerbelt, the outer edges of which engage the conical rollers H II, thereby avoiding any dangerof the concrete falling over the side edges of the conveyer. The funnel-shaped hopper Ii receives the concrete from the end of the conveyer-belt and prevents the heavy ingredients of the concrete from being separated from the lighter ingredients, all of the constituent parts of the concrete being received by the enlarged opening in the top of the hopper and concentrated by means of its reduced outlet. The cover L may be swung into position to close the hopper, as indicated in Fig. 1, when the concrete is being delivered into wheelbarrows, which are intermittently located beneath the hopper.

The location of the doublefaced gear 0 in vertical alinement with the king-bolt permits the power to be uniformly communicated from the power-shaft to the conveyer regardless of the horizontal adjustment of the conveyer-frame. The location of the shaft R concentrically within the pivotal connections between the conveyer-frame and side beams I) D permits the vertical adjustment of the conveyer-frame without affecting the engagement between the sprocket-wheels R R and the sprocket-chains Q Q.

While I have described more or less precisely the details of construction, I do not wish to be understood as limiting myself thereto, as I contemplate changes in form, the proportion of parts, and the substitution of equivalents as circumstances may suggest or render expedient without departing from the spirit of my invention.

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

1. In an apparatus of the character described, the combination with a mixer, of longitudinal parallel beams upon which the mixer is supported, beams secured to and depending from said longitudinal beams, a horizontal frame supported beneath the discharging end of the mixer by said depending beams, and a conveyer mounted upon said horizontal frame.

2. In an apparatus of the character described, the combination with a mixer, oflongitudinal parallel beams upon which the mixer is supported, beams secured to and depending from said longitudinal beams, a horizontal frame supported beneath the discharging end of the mixer by said depending beams, a turn-table rotatabl y mounted upon said hori zontal frame, and a vertically-swinging conveyer pivotally secured to said turn-table.

3. In an apparatus of the character described, the combination with a mixer, of a support therefor, a discharge-chute located beneath the delivery end of said mixer and mounted upon said support, a cylindrical guide-roller journalcd upon said support beneath said chute, a conveyer-frame pivotally mounted on said support, a cylindrical guideroller journaled in the outer end ofsaid frame, concave guide-rollers journaled in said conveyer-frame, a conveyer-belt passing around said cylindrical and concave guide-rollers, and a funnel-shaped hopper supported by said conveyer-frame below the cylindrical guide-roller journaled in the end thereof.

4. In an apparatus of the character described, the oombination with a mixer, of a support therefor, a horizontally-swinging conveyer-frame mounted upon said support, a conveyer-belt carried by said frame, and a chute horizontally movable with said conveyer-frame and receiving the material from the mixer and depositing the same upon the conveyer-belt, substantially as described.

5. In an apparatus of the character described, the combination with a mixer, of a support therefor, a horizontally-swingingconveyer-frame mounted upon said support, a conveyer-belt carried by said frame, a chute horizontally movable with said conveyerframe and receiving the material from the mixer and depositing the same upon the conveyer-belt, and concave guide-rollers journaled in said conveyer-frame over which said belt passes, substantially as described.

6. In an apparatus of the character described, the combination with a mixer, of a support therefor, a horizontally-swinging conveyer-frame mounted upon said support, a conveyer-belt carried by said frame, a chute horizontally movable with said conveyerframe and receiving the material from the mixer and depositing the same upon the conveyer-belt, concave guide-rollers journaled in said conveyer-frame over which said belt passes, and a funnel-shaped hopper supported by said con veyer-frame below the delivery end thereof, substantially as described.

7. In an apparatus of the character described, the combination with a support, of a vertically-swingin g conveyer-frame mounted on said support, a conveyer-belt carried by said frame, transverselyextending sleeves secured to the sides of said frame, bearings on said support within which said sleeves are received, a shaft extending through said sleeves, bushings secured to said shaft and interposed between the same and said sleeves, means for rotating said shaft, and means connecting said shaft with said conveyer-belt for driving the latter, substantially as described.

8. In an apparatus of the character described, the combination with a support, of a horizontally-swinging conveyer-frame, a conveyer-belt carried by said frame, a turn-table mounted upon said support to which said conveyer-frame is connected, a king-bolt passing through said support and said turn-table, a gear-wheel the axis of which is in alinemen't with the king-bolt, a support forsaid gearwheel secured to said turn-table and interposed between said gear-wheel and kingbolt, a power-shaft operatively connected with said ICO IIO

ing a gear-Wheel in mesh With the teeth on one face of said double gear-wheel, a stubshaft having a gear-Wheel in mesh with the teeth on the other face of said double gear, and means connected to said stub-shaft for driving the conveyer-belt,substantially as described.

In testimony whereof I sign this specification in the presence of two witnesses.

CHESTER T. DRAKE. WVitnesses:

GEO. L. WILKINSoN, L. J. BYRNE.