US879808A - Concrete-mixer. - Google Patents

Description

PATENTBD PEB. v1a,V 1908.v

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' H. BESSER. G 'ONCRETE MIXER. APPLIOATIDN FILED APE.16, 1907'.

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PATENQQED PEB. l1a, v1,908.

l H BESSER CONCRETE MIXER: APPLICATION FILED APR 16 1907 Q sHEBTs-SHBET 3.

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siriane retratar onirica.

HERMAN BESSR, OF ALPENA, MICHIGAN.

Speciication of Letters Patent.

Application led April I6, 1907. Serial No. 368,504.

To all whom. tt may concern.'

Be 1t known that I, HERMAN Bnssnn, a

`citizen of the United States, and a resident of Alpena, in the county of Alpena and State of Michigan, have invented a new and lmproved Concrete-Mixer, 'of which the followand exact description.

My invention relates to machinery for ,working plastic substances, and more particularly to a type of machine suitable for mixing concrete and other moldable materia-ls employed in building.

I have noticed that in. mixing different kinds of cement products, for the purpose of making building blocks, brick, etc., considerable trouble is frequently experienced because the material must be used in a comparatively dry state. This is usually necesi sary because the material adheres to the plates of the machine. As a result it is difficult to make blocks which are waterproof. It is absolutely necessary to have an adequate supply of water in mixing concrete in order that good Work may be done.

It should be borne in mind that by irst #thoroughly mixing the different materials ing drawings forming a part in a dry state, then adding water in adequate quantity to insure perfect plasticity and to compact the material, it is very dif licult to confer upon the blocks or other materials sullicient stability to enable them to be removed from th machine. Hence, in the present invention I seek to not only add an. adequate supply of water to reduce the composite materialV to proper consistency, but further to add a for the purpose of taking up the excess of water by hydration, and thus conferring upon the iinished material a suitable consistency.

Reference is to be had 'to the accompanyof this speciii cation, in which similar characters of reference indicate corresponding parts on all the figures. Figure 1 is a plan view of a machine made in accordance with my invention, showing the hopper provided with angular compartments for holding the variousmaterials to be mixed, and also showing the various station ary bafflesused for manipulating the materials as the latter are carried around; Fig. 2 is a vertical cross section on the line 2-2 of Fig. y

quantity of dry materialv Fig. 2.

and the gearing for actuating the turntable; Fig. 3 is a cross section through the hopper, showing the various gates and outlets for the materials; and Fig'. 4 section on the Yline 4--4 of Fig. 3, looking in the direction of the arrow and showing the means for adjusting the gates by hand.

Mounted centrally within a framework 5 is a cup-bearing 6 provided with an antifriction ball 4-7, upon which rests avertical shaft 8. ported upon a trestle 10. Projecting 1nwardly from the framework 5 are lugs 11, supporting a stationary' disk 12 bolted thereto. A hopper 1 3, of cylindrical form, is let int-o the disk 12 and supported stationarily in relation thereto. A ring 14 braces the hopper relatively to the disk 12 and holds these parts securely together. An annular band 15 encircles the framework 5 and strengthens the same. A revoluble table 16, of circular form, is provided with an an tilar step 17 concentric thereto. The plane of this step is of a lower level than that of the table 16. The step 17 and table 16 are connected together by a portion 18 integral therewith, as will be understood from 'Ihe object of the step in the disk is to keep part of the disk at all times dry, so

that a perfectly dry mixture can be made before water is added. A pipe 17d is used for showering water upon the step 17 and the materials` carried thereby, the water being added to .the materials on the lower and outer part of the disk at the point where it first drops over the step vand upon the lower plane of the disk, the step preventing the Water from coming in contact with the upper plane of the disk where the dry mixing is done.

The annular step 17 rests u )on an annular gear 19, being secured direct y to the same, and this gear meshes with a pinion 20 mounted upon a revoluble shaft 21. This shaftv turns in a bearing 22 which is secured to the frame 5 and isjiitted with a pulley 23 for the purpose of applying power thereto. rlChe shaft 21,is provided with a hand-crank 24 whereby it ma be turned. In other Words, the device is 'fitted for rotation by either power or hand, as the case may be.

Mounted centrally upon the revoluble table 16 is a -packing ring 26 of triangular cross section, as indicated in Fig. 2. The upper edge of'this ring fits into an annular is a central vertical any desired material, such as rubl er or adjustable re of baiiie y stantially 1n the form of a circle and placed at metal.

Mounted rigidly within the hopper 13'are partitions 28, 29, 30,'whereby the interior of the hopper is divided into radially disposed compartments.4 The bottom of the hopper is shown at 31 and is provided with arcuate openings32 which merge into largerwopenings 33, of the shape indicated in Fig. 1.

Guiding Walls 34, 35, 36, are provided, and

the openings 33 are bounded upon the inner side by these walls.

Each partition 28, 29, 30, is provided with a gateway 28a disposed adjacent'to its bottom, which' are in alinement with one of the arcuate openings 32 (see Fi 3). Each gate 37 is operated by a han lever 38. The latter is mounted upon a pivot 39 serving as a journal, and is also connected by a pivot 40 with the upper end of the gate. A number ci holes 41 are provided foi` receiving a pin 42, the latter passing through the hand-lever 38. In order to raise or lower the-lever'so as te ad'ust the vertical height of the gate 37, the and-lever 38 is raised or lowered,

-the'pin 42 being first removed, and then replaced. This Will be,understoo'd from Fig. 4. By this arrangementthe operator can adjust the outlet capacity of the several gates 37 at will and can render the capacity of one gate independent of that of another. Mounted upon the stationary disk 12 and atively thereto, are a number plates 44, 45, 46, arranged subdifierent angles relatively to each other in such manner 'as to guide, in a sinuous path, a substance resting upon the revoluble table 16. At 47, 48 are battles somewhat similar to those ju'stl mentioned, but having a slightly different shape, for the purpose of uiding the material in a slightly different at for a purpose hereinafter described. t will be noted that the baille plates 45 are a little further outward than the baffles 46. Th'is facilitates the passage of the material in a sinuous path. -A number of baille plates 49, y are supported by the disk 12 and reach directly into engagement with the annular ste 17. For'this purlpose the disk 12 is slotted? and the baiieA p ates extend verticali throughv it, being each adjustable with reference to the disk. All of the bafiieplates used are'mounted in the manner indicated in Fig. 2. That is to say, the baiie plates 49, 50have their lower edges in a lower plane than is the case with the baffle plates 45, 46 (see Fig. 2). A guide plate 51, supported in crete. `soit to be used for many purposes. `As'the like manner as the baflie plates, isemployed l for directing the dischar e of the material from the machine. Thel afile-plates 45, 50 and theidelate 51 are provided with slots 52, t rougii which extend bolts 53, the latter passing through sup orti brackets 54 mounted rigidly u on t e dis 12 (see left-hand portion of ig., 2). The various baille-plates and the ide-plate 51 may be adjusted vertically. his is to compensate for wear at the bottoms of the various plates.

At 55 is a reservoir for holding a dr ing material. This reservoir is o ening 56 for discharging t e material upon t erevolubletable 16.

My machine is used as follows: Suppose that I desire to make concrete. I place in the hopper the several se 'arate quantities of rovided Wit anr sand, .cement and grave or crushed stone.

The various gates are adjusted and power is ap lied to the machine. The' revoluble ta le 16 and step 17 begin to turn. The dry;y

materials l'low out through the apertures 32, 28 and 33. The rotation of the revoluble t'able, 'by carrying away the portion first making itsl appearance, makes room for 4another portion, so that the outflow of the materials is continuous. There are thus three streams of material, and upon reaching the wall 34 they mergeinto a single stream.

The various baffles 45, 46 cause the material to turn over and over, so as to render the admixture thorough. This is while the materials are in a dry state. As soon as the mixture passes out u on the step 17 it is showered with water om the pipe 17. This Water Hows continuously while-the machine is in action.

. Care should be exercised to see that enough water isadded to make a good quality of con- In this condition the material is tool material winds its Way sinuously around, however, 1t comes to the reservoir 55 which,

as above stated, is filled with a drying material, such, for instance, as owdered lime, or any other substance capab e of taking up water by hydration. The Wet concrete receives a proper proportion of this drying material and continues its way sinuously around, being baffled back and forth and finally lodging upon the step 17. Here it is again baffled inwardly and outwardly until it has had suiiicient time and proper manipulation to enablathe drying substance contained in it to reduce the entire mass to ploper consistency to be molded. At last the ished material arrives at the guide-plate 51 and is ejected `from the machine in the form of a continuous` stream. If now the operator finds that for any reason the. supply. y' 0 a particular. ingredient from the hopper is out of proportion he can by adjust' one of the gates, correct this defect while t e machine is in action.' The gates are so positioned and adjusted as to feed out the different materiais and bring them together at thejpoints Where they engage the baiies.

Having thus described my invention, l claim as new and desire to secure by Letters yate/nt;

l. The combination of a revoluble table, a stationary ,hopper mounted thereover, a l engaging -said revoluble table for I nting entry of materials from said hop.- -er to certain portions of said revoluble taoie, and stationary baiiies disposed adjacent to said revoluble table and 1n the path of travei ci materials discharged from said hopper. j

3. 'The 'combination 'of a table provided 'with a plurality of portions having different ieveis separated from each other, means for mixing upon one of said` portions materials in a dry-state, mechanism for transferring said materials thus mixed to the other por- `ftion, and mechanism disposed adjacent to said last-mentioned portion for `wetting said materials. v

3. The combination of a stationary memla ste said plane surface engaging one of said aflies, and said step engaging another of said baffles, and means for turning said table relatively to said stationary member,

' 4. The combination of a hopper provided with a plurality of compartments, a plurality of separate gates for discharging material from the compartments, a evoluble table disposed adjacent to said hop er and adapted to receive said materials W en discharged therefrom, means for turning said table, and stationary batlies disposed adjacent to said table.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

4. HERMAN BESSER. Witnesses:

'AHATTIE BEAL,

BYRON H. OLns.

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