US1427955A - Concrete mixer - Google Patents

Description

J. W. HELTZEL.

CONCRETE MIXER.

APPLICATION man JULY 17,1920.

13273955; PatentedSept. 5, 1922.

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i g W I o I fitter/"ego r J. W. HELTZEL.

CONCRETE MIXER- APPLLCATION FILED JULY 17.1920.

Patented Sept. 5, 1922.

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Patented Sept. 5, 19226 st s r rein.

JOSEPH W. HEL'LZEL, OF WARREN, OHIO.

CONCRETE MIXER,u

Application filed July 17,

To all whom it may concern:

Be it known that I, JosnrH W. HELTZEL, a citizen of the United States, residing at Warren, in the county of Trumbull and State of Ohio, have invented a new and useful Concrete Mixer, of which the following is a specification.

This invention relates to agitators and more particularly to an improved concrete mixer adapted to be manually operated to mix various ingredients such as concrete or the like, the device being constructed to be manually manipulated to mix a maximum quantity of concrete by hand in the shortest possible time consistent with a device or machine of its type adapted to be manually manipulated, and which is relatively inexpensive and durable.

A further object of the invention is to provide an improved concrete mixer of the type employing a movement on the principle ofthe walking beam in combination with an actuating cable and drum therefor, so as to oscillate a mixing drum or receptacle of elongated form, whereby the water may be caused to drop first and then the aggregate and other heavy contents on top of the water, thus obtaining a thorough and rapid mixing with a minimum of labor.

A further object of the invention is to pro vide an improved concrete mixer having a novel construction of mixing drum supported for oscillation together'with improved means for actuating the same and for charging and filling and emptying the contents of the drum after the same has been mixed.

With the above and other objects in view which will appear as the description proceeds, the invention resides inthe combination and arrangement of parts and in the details of construction hereinafter described, and claimed, it being understood that within the scope of what is claimed, changes in the precise embodiment of the invention shown can be made without departing from. the spirit of the invention.

In the accompanying drawings Figure 1 isa side elevation of my improved concrete mixer V H Figure 2 is a longitudinal sectional view thereof vertically of the mixer;

Figure 3 is an end elevation; and

Figure 4 is a vertical sectional view taken on the line 4-4 of Figure 1. M

Referring to the drawings in detail, in

1920. Serial No. 396,990.

which like reference characters designate corresponding parts throughout the several v1ews, my improved mixer is shown as comprising an elongated receptacle or drum 10 preferably of tubular outline and cross-section, mounted intermediately of its ends upon transverse pivot or rocker shaft 11 form- 1ng a pin or trunnion whichsupports the mixing drum and which may extend entirely through. the drum or otherwise, as desired. The ends of this shaft or trunnion are rotatably mounted in a frame structure including spaced uprights or supporting posts 12 which are arranged in spaced parallel relation upon a base or supports 13 and held rigidly in such position through the medium of oppositely inclined diagonal braces 14 extending between said uprights and the base near the outer ends ofthe latter. The base includes transverse connecting or end members 15 so as to render the structure rigid and to connect the side members forming the base proper.

A pair ofposts 16 extend from the base near the lower ends of the uprights at right angles to the braces 14 and extend upwardly beyond the point of intersection, where the upper extremities of said limit or stop posts are recessed, as indicatedat 17 for a purpose to be hereinafter more particularly specified. Adjacent to the posts 16 and connected there to and to the braces 14 are transverse connecting members 18 forming blocks or supports for sheaves or pulleys 19, rotatably mounted in brackets 20 carried by said supports upon the upper faces thereof, preferably below the posts.

-At the sides of the drum or receptacle, there are disposed strips 21 which reenforce and strengthen the drum to form bearings for receiving the shaft or trunnion 11, said strips being preferably riveted or otherwise secured at the opposed sides of the drum so as to extend longitudinally thereof for a considerable distance. The top of the drum is provided with a reenforced opening 22, a stiffening ring 23 being disposed around the edge of the opening, and suitably riveted to I the drum for this purpose, and said opening being located centrallylof the length of the drum as shown. The drum may be further provided with an opening 24 which may be closed by a hinged or othercover 25 having a suitable fastening means 26, it being understood that the drum is charged through the opening 22 when the device is in a horizontal position, or may be charged through the opening 2i when the drum is in an inclined position toward the end opposite to that provided with the opening 2%, so that the end at which this opening iS-PIOVlClQCl is uppermost and the opposite end lowermost. The cover is of course closed when the device is in use, as it is thought will be obvious.

One end of the drum is provided with a permanent wall 27 and the opposite end is provided with a hinged closure or end 28, hinged the top, as indicated at 29, the end 2ibeing perinai'iently secured in position and the hinged end or end piece 28 being adapted to cooperate with a packing member 30, so that a liquid tightjoint is formed at said end. That is, the upper portion of the end piece is fixed, while thelower portion is designated at 31so' that the contents may be dischargedtrom the bottom thereof.

At thelower portion of the discharge door movement of the leverat the inner arm thereof, it being observed that the-lever is pivoted intermediatelyof its end, and nearer the outer end-thereof than the inner end thereof, so that the inner arm is longer than the outer whereby but slight movement of the lever is required in moving to and from an engaging ordisengaging position. The longer arm of the lever at its inner end is adapted to engage and rest upon a releasing lever 39 pivoted as shown at 40 to a bracket 41]. also suspended beneath the drum like the bracket the inner end otth'elever 39 forming a hand hold by which the longer:

arm of the lever 33-may be elevated against the action of the spring 36, inv order to release the locking end of the lever from-the lug or catch 3;, charged door 31 may swing to an open position or be locked inna closed position. and held thereby.

Inorder to actuate themixing device, that I is, to oscillate the mixing drum or receptacle, there is provided a drum orwlnding device i2 between the uprights 12 about midway between the bottom of-the drum and the base of the supporting frame, the same having an operating crank or handle 43' by whereby the swinging dis-;

the same. One of the yokes is adapted to extend aroundithe locking lever and adjacent parts so as to not interi'ere with the operation oi the latter, it being understood; that said yokes are rigid and the connection of the extremities ot the cablest-herewith is made through the medium of rings or links #16, with interposed compensating connections or springs 47, in order to take up jar and shock, as the drum 10 is oscillated and as the same changes itsmotion from one side to the other.

In the operation of the device, the drum is filled with the material to be mixed, preferably water first and then the concrete. gravel, sand or other material to be thoroughly agitated and intermixed, through the opening 22, the closure 25 and the swing: ing discharge door 31 beingclosed. The iiiterior of the drum is provided with a series of spaced battle blat es 4:8, preferably sloping in one direction toward the discharge door 31, so that with the water placed be: neath the aggregate and other heavy contents, the water will drop first and then the aggregate, thus securing a thorough and rapid mixing with a minimum of labor, by merely agitatiiigthe contents through the medium of oscillation of the mixing cylinder.

by turning the handcrank and its drum in opposite directions to the desired extent.- This oscillatory movement is regulated by engagement'ofthe stop posts 16 at their. concaved ends 17 with the drum, it being understood that said concaved ends areimade to conform to the contour of the drum in order to limit-the oscillatory movement of the drum or its incline at either side. It

is of course to be understood thatwhen the hand crank or crank handle and the drum woundinone direction and unwound in the other, this causing themixing the drum or receptacle to be oscillated in thejmanner of a walking beam through the medium of the extremities of the cable connected to sufficiently dry and yet sufficiently Wet, if

the same is'not in theproper proportion or condition. If the mixture is correct, the discharge door may beopened to discharge 42 thereof is manipulated, the cable will be.

the contents, and otherwise, the mixing operation must be continued after closing the cover 25, the required additional materials having been previously charged therethrough. It will of course be understood that the inclined baflie blades 48 by being set at an angle, will not interfere with the thorough mixing of the ingredients and discharge of the contents through the discharge door at one end of the mixing drum or re ceptacle, but will catch the material as the drum is oscillated in either direction, owing to the positioning of said blades at the bottom of the drum or cylinder, so as to churn the concrete when dropping from one end of the cylinder to the other so as to insure thorough agitation. In connection with the foregoing, it may also be stated that the winding device comprised by the drum 42, the cable 44 and the shank handle 43, constitutes a simple embodiment of the actuating means for the mixing drum, cylinder or receptacle, it being understood that the winding drum 42 is mounted on a shaft 49 rotatably journaled in the side members or uprights 12, the crank handle being secured to the shaft so that the same may be manipulated to impart oscillatory movement thereto for alternately winding the drum in one direction while the other end is being unwound, and then winding the cable on the drum in the opposite direction while the opposite end is being unwound, thus exerting opposite pull alternately on the ends of the mixing drum or cylinder to cause the latter to rock at either side and in oppositely inclined positions limited by the stop or limit posts 16 as heretofore specified.

It will thus be seen that I have provided a very simple and eflicient form of manually operated concrete mixer which requires but a small expenditure of power to manually manipulate the same, and which owing to the length of the mixing drum, cylinder or receptacle, may be made to have a relatively large capacity and yet thoroughly intermix the contents in a very short time. While I have shown and described the form of the invention which now seems to be the preferred embodiment thereof, I desire to have it understood that I may make such changes in the construction thereof, as will be found covered by the device as set forth in the appended claim.

Having thus described the invention what I claim is:

In a mixing device, a support, a drum pivotally mounted intermediate its ends to permit the same to oscillate, a plurality of semi-circular spaced baflie blades positioned within the drum, the upper ends of the battle blades terminating at points intermediate the top and bottom of the drum and means for oscillating the drum In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

JOSEPH W. HELTZEL.

Witnesses:

FRANK W. BOYLE, EDNA M. BOYLE.

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