US824204A - Concrete-mixing machine. - Google Patents

Description

N0. 824,204.- PATENTED JUNE 26, 1906, W. H. PHILLIPS. CONCRETE MIXING MACHINE.

APPLICATION FILED MAR. 20, 1905.

2 SHEETSSHE ET 1.

. INVENTOR wzlizam i'pfil i iz s momam No. 824,204. PATENTED JUNE 26, 1906.

W. H. PHILLIPS.

CONCRETE MIXING MACHINE.

APPLICATION FILED MAR. 20, 1905.

' 2 SHEBTSSHBET 2.

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CONCRETE-MIXING MACHINE.

Specification of Letters Patent.

Patented une 26, 1906.

Application filed March 20, 1906. Boris] No. 250,937.

To aZZ whom it may concern Be it known that 1, WILLIAM H. PHIL- LIPS, a citizen of the United States, residin at Columbus, in the county of Franklin an State of Ohio, have invented certain new' and useful Improvements Concrete Mixing Machines, of which the following is a specification. v

My invention. relates to a new and useful improvement in mixers, and more particularly to that class known as "proportional concrete-mixers.

The object of the invention is to provide simple and effective means for feeding the materials to be mixed proportionally into a mixing-drum.

Another feature lies in a mixing body or cage fitting snugldy but removably in the revo ving drum an normally turning with the drum, but so arranged that it may be turned in the drum to clean the inner periphery thereof.

Finally, the object of the invention is-to provide a mixer of the character described that will be stron durable, and efficient, and one in which t e several parts will not be liable to get out of working order.

With the above and other objects in view the invention consists of the novel details of construction and operation, a referable embodiment of which is describe in the specification and illustrated in the accompanying drawings, wherein Figural is a side elevation. Fig. 2 is a longitudinal vertical sectional View taken on line a: a: of Fig. 3, but showing the mixingcage and one of the conveyers in elevation. Fig. 3 is a plan view of a portion of the hopper, being broken away to showthe driving mechanism lying therebeneath. Fi 4 is a rear end elevation. Fi 5 is an eevation of the delivery end; and ig. 6 is ahorizontal cross-sectional view taken throu h the strip 17, pinion 13, and a portion of the arm 12, and showing the lock-bolt in plan.

In the drawings, the numeral 1 desi nates the sills or beams upon which the mac ine is mounted. Supported from the sills by a suitable chair or bracket 2 is a vertically-extending hopper 3, formed with a flarin mouth and having a central longitudinafi partition 4, which divides it into two compartments-preferably a cement-compartment 5 and a sand and gravel compartment 6. Arranged in the bottom of each compartment is a spiral conveyer 7. The stems or shafts of the conveyers extend through bearing-bosses 8 formed in the rear wall of the hopper, and are additionally supported at their outer ends in bearing-boxes 9, supported on a standard 10. In this way a double bearing is provided and the necessity of bear mg boxes or supports for the conveyers at their inner ends is obviated thereby ro viding a free and unobstructed passage 0 the materials into the drum and also supporting the conveyer out of contact with the hopper bottom, which prevents wearing of the parts.

The'shaft of the ce'ment-conve er has fixed upon its outer end a gear 11, and gear but adjacent thereto a lever-arm 12 is also mounted .upon the said shaft. Thisarm pivotally su ports a pinion 13, which is adapted to mes fixed u on the outerend of the sand-conveyer s aft. The lever 12 carries a lookbeyond the I with a second pinion 14,

bolt 15, which projects through a curved slot 16 of a vertica end to one of the cross-sills The lock-bolt 15, as shown in Fig. 6, is rovided with a shoulder portion 15",. w 'chabuts the inner side of the arm 12, thus permitting the arm and the vertical strip 17 to strip 17, secured at its lower be securely locked together when the nut 17 is tightened on the bolt 15, while the pinion 13, which is confined on the shoulder by the bolt-head 15 is free to rotate.

When it is desired to change the relative rates of speeds at which the conveyers are driven, the pinion 14 may be removed and either a larger or smaller inion 14 substituted, it being necessary to oosen the bolt 15 to allow the arm 12 to be swung upward or downward to bring the pinion 13 into mesh with the new pinion'14, it being understood that the said pinion 13 is at all times in mesh with, the gear 11.

Motion is imparted by a sprocket-wheel 18, mounted on the shaft of the sand-conveyer 5. This sprocket is driven by a chain- 19, which passes about a sprocket 1.9 keyed on a drive-shaft 20. A sprocket-tightener 21 is mounted on a shaft 22 supported by and between the chair 2 and the standard 10. The drive-shaft20 extends longitudinally of the sills, and is supported in suitablymounted bearing-boxes 23, fastened upon the sill. pair of band-wheels 24 are disposed upon the drive-shaft beneath the hopper.

A mixing-drum 25 is provided in its rear end with a concentric annular opening 26, into which project spouts 27, formed on the i having vide a circular track or band 29 and also a similar track 29 at the rear end of the drum adjacent the hopper. The a forward track or band is provided with anannular gearring 30, which meshes with a pinion 31, keyed upon the drive-shaft 20. ()n its opposite side the mixer is provided with a longitudinal shaft 32, suitably supported in bearing-boxes 33, mounted on the sill 1 opposite to the sill supporting the drive-shaft. The said shaft 32 is thus arranged in parallel relation to the drive-shaft and carries wheels 34, which engage with the tracks 29 and stand opposite like wheels 34,1nounted on the drive-shaft and also en agin with the tracks. It is thus apparent t at the drum is rotatably supported, and to guard against longitudinal movement of the same an annular flange 35 is formed on the rear track 29, so as to implinge the rear sides of the rear wheels 34. otion being imparted to the drive-shaft 20 will be transmitted to the gear-rin 30 by the pinion 31, and the drum thus revo ved.

Within the drum proper I arrange a cylindrical wire cage 36, braced at its ends and center portion 'by cylindrical bands 37, and a diameter considerably less than that of the drum. The forward end of the cage terminates on the line of intersection between the spout 28 and the drum and its rear end terminates short of the rear end of the drum. The bands sup ort vanes or blades 38, having their outer e ed es bearing against the inner periphery of t drum 25 he blades are inclined rearwardly and are arranged with respect to their length at an angle to the imaginary longitudinal axis of the cage. At their outer ends the blades are bent outwardly or flared, so as to have their outer or free ed es in contact with the inner peri hery of't e spout 28.- At the mouth of te spout the outwardly-bent ends are fixedly secured to the ends of angular brackets 39, which are fastened upon an annular ring or band 40. That portion of the blades extending within the drum .are secured upon the bands 37. by suitable angle-irons 41. To cause the blades and cage or mixingbody to turn with the drum, a pin 42 is secured upon the outer end of one of the blades I and projects beyond the edge of the spout Within a loop 43, mounted upon the spout, the said loop being so positioned as to engage with the pin when the drum is revolved.

this manner the mixing-bod while held in the drum by the pin 42 and 00p 43 is otherwise independent thereof, as the blades, while fitting snugly within the drum, are not in any way connected to the same, and by removing the pin 42 the mixing-body may be readily season withdrawn from the drum or manually revo-lved therein.

In utilizin my invention moton having been impartrfi to the drive-shaft 20 by means of the band-Wheels 24 and the drum and conveyers caused to revolve in the manner described, cement is delivered into the cementcompartment 6 and the material with which it is to be mixed-such as sand, gravel, &c:-is delivered into the compartment 5. The conveyer in the compartment 5, revolving at a higher rate of speed, owing to its direct drive by the chain 19 and sprocket 18, than the conveyer inthe compartment 6 willthus deliver a greater amount of sand, gravel, 850., through the spout 27 into the drum than the amount of cement conveyed or delivered through the other s out 27 by the said cement conveyor. e materials delivered through the s outs pass into the mixingdrum 17, whic is revolved at a comparatively ow rate of delivered enter the cage 36, and owing to its 0 en mesh readily ass through the same to t e bottom of the 11m and are taken up by the blades and carried up with the drum. However, the materials that are carried upward by the drum or blades again fall through the ea c as they are carried toward the top of the um; The materials falling from the upper part of the drum drop upon the materials which are being delivered through the spouts, and thus again fall through t e ca e to the bottom of the drum, and are in this way thoroughly mixed. Owing to the an ular disposition of the blades the materia s as they are mixed are forward in the drum untiT they reach the s out. At this point water is suitably introuced to dam n the mixture, and the cement is final y delivered from the spout ready for use. It will be observed that the mixing operation is continuously carried on as long as the materials remain within the spout or drum, as the blades extend entirely to the outer edge of the spout. When it is desired to clean the inner periphery of the drum and spout, it is merely necessary to remove thepin 42 and rasp the band 40 or one or more of the brac ets 39 and turn the blades or mixing-body in the opposite direction to that in which the drum is revolving. This operation will thoroughly scrape the said adually worked speed. The materials thus peripheries and remove any adhering materials. The spout and drum may also be cleaned shutting off the power and sto pin the m and grasping the mixing-body 1n e manner described, then turning the same back and forth, which will effectually accomplish the desired result. The mixin body may be readily withdrawn after the pin 7 42 has been disenga ed from the hook 43 and removed from the 1m for the purposes of cleaning and inspection. After the mixin body has been removed it may be easiiy cleaned'by either shak' or arrin it a ainst some fixed surface. mg g g Having now fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a machine for mixing building materials, the-combination with feeding means, of a mixing-drum formed with a deliverysfiout and arranged in communication with t e feeding means, means for im arting motion to the drum, and a remova iile mixingbod? fitting snugly within the drum and normal y revolving therewith, but arranged to be moved independently thereof to scrape the inner eriphry of the i 2. n a machine for mixing building materials, the combinationwith feeding means, of'a revolving mixing-drum arranged in juxtaposition to the feeding means and having communication therewith, and a removable mixing-body fitting snugly within the drum havin inclined mixing blades contacting with t e inner periphery of the said drum.

3. In a mixing-machine, the combination with feeding means, of a revolving mixingdrum arranged adjacent to the feedlng means having a flaring spout and an independent removable mixing-body having a flared end so as to fit snugly within the spout and the drum.

4. In a machine for mixing building materials, the combination with feeding means and a revolving-drum associated with the feeding means and'having communication therewith, of a mixing-body arranged in the of a mixing-drum'formed with a deliveryspout and arranged in communication with the feeding means, means for imparting motion to the drum and a removable mixingbody, consistin of a loose cage in the drum and inclined mlxing-blades in the drum extending into the spout fitting the inner peripheries of both drum and spout snugly, but arranged to move independently thereof to scrape their inner peripheries.

6. In a machine for mixing building materials, the combination with feeding means, of a revoluble mixing-drum arranged in juxtaposition' to the feeding means and having communication therewith, and a removable mixing-body consisting of a loose cage in the drum and inclined mixing-blades in the drum extending into the spout contacting with "their inner peripheries.

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

WILLIAM'H. PHILLIPS.

Witnesses:

' A. T. PHELPS,

M. B. SCHLEY.

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