US316069A - Gael schlickeysest - Google Patents

Description

(No Model.)

0. SOHLIGKEYSEN;

APPARATUS FOR MIXING MORTAR, CONCRETE, &c. No. 316,069.

Patented Apr. 21

Nr'ra STA-Tas- CARL SGHLIOKEYSEN, OF BERLIN, GERMANY.

SPECIFICATION forming part of Letters Patent No. 316,069, dated April 21, 1885.

Application tiled June 28, 1884. (No model.) Patented in Belgium February 29, 1884, No. 61,327, and in England March 1, 1884,

another mixing-vessel and mixing it with other substances,especiall y gravel or quartz or pieces of stone, and adding water, then conveying I the material to one end of the vessel, where it is either allowed to drop out or is first raised to a higher level by gutter-elevator and then discharged.

The accompanying drawings form a part of this specification and represent what I consider the best means of carrying out the invention.

Figure 1 is a transverse section on the line 00 a: in Fig. 2. Flg. 2 is a plan View, partly in section. Fig. 3 is a transverse section on the line 3 y in Fig. 2. Fig. 4 is an enlarged sectional detail view of one of the mixer-arms in the second trough. Fig. 5 is a vertical cross-section through the said second trough. Fig. 6 is a part plan of the mixer arms therein. 7

Similar letters of reference indicate corresponding parts in all the figures where they occur.

The firstmixing-trough, A,is partly or wholly open at the top. The materials-such as lime, sand, cement, or other materialsare thrown in at one end, A, Fig. 2, in a dry or wet state, and by means of the mixer-arms A Fig. 3, on the revolving shaft A well mixed, and by the skewedor screw-thread position of blades on the arms simultaneously conveyed in the well-known manner to the other end, where it is let out by a slide-valve through an opening, A, orby another slide-valvethrough revolving mixer-arms, such as B B Figs. 4,

concrete or other made material to the required height and discharging it there. The gutterelevator is somewhat wider than the opening B in the second mixing-trough, from which it rises. There is a shield, B, Fig. 1, below the endless gutter,and fixed to the second mixingtrough, B, for preventing the concrete from falling through instead'ot' being taken up by the cross-boards D in the gutter-elevator. As the aforesaid opening B to the second mixingtrough, B, is open at the top and wider than the largest stones in the concrete,no jamming of the concrete can take place, and the mixing, lifting, and discharging operations are not in terrupted. An adjustable board, 0 near the top of the elevator is for directing the discharge of the concrete.

In mixing concrete it is of importance that the smaller particles be mixed as dry as possible, then to add water so as to form an even grout, and to mix the latter with gravel, pieces of stone, lime, or the like. These requirements are fulfilled by my apparatus.

In placeof the two mixing-vessels shown three or more can be arranged, of which one is always conveying the material automatically into another, and the material is being mixed there wlth other substances. This mixed product is fed to the next succeeding trough.

It is new to use for coarse concrete a mixing-trough with knives or arms similar to.

those for mixing clay, and this is only possible by providing means whereby all jammingv walls. The knives or arms B are also, as shown in Figs. 4, 5, and 6, provided with steel edge-pieces B which have projecting points or wedges that come near the trough-walls. When worn these pieces may be replaced by new ones, or be forced a little farther out till they almost touch the walls; also, for thesame purpose at those. places where the knives pass I provide the inner walls of the trough with strips of sheet steel B Figs. 5 and 6, riveted on at one lower end, and reaching up to the hopper, where they are provided with hingepins B, to which is connected a knee-lever,

B and adjustingscrew B, for drawing the,

band up around the knife ends, which thus scrape against it. These steel bands areonly needed on the side where the knvies rise, as there is no tendency tojam on the other side, and they are cut off slanting at B in order that the knives may not jam the pieces of stone here, but slide past the slanting edge.

Opposite the two outlet-openings B B the mixer-shaft F is provided with one or more flaps, or a double flap, G G, (see Figs. 1 and 2,) for the purpose of insuring that the mixture is led more certainly toward those openings. These flaps G are weakly secured, so that they would eventually give way and turn on the shaft in case a heavy obstruction-such as stone-should be j ammed between a flap and the wall of the trough. When the obstruction had been removed, it would again turn around with the shaft and fulfill its purpose.

I claim as my invention- 1. In a machine for mixing concrete, two or more mixing-troughs, each having revolving shafts and arms, arranged side by side, and the exit end of the primary trough connected with the entrance end of the secondary trough by separate gateways controlled by adjustable gates or valves combined with a single power and connections, whereby two or more ingredients are mixed in the primary trough and automatically carried to the next trough, mixed with other ingredients, and automatically carried in the opposite direction from the second trough, as set forth.

2. The construction of the mixing-troughs, and especially constructing the second trough with mixer-arms provided with spur-like projections, with upper slot-openings, with about radial upper hopper-walls, and with yielding parts, for the purpose of preventing jamming, substantially as set forth.

3. In a mixing-trough, in combination with a revolving shaft carrying knives, the series of correspondingly broad plates or 'aprons of sheet metal, each fixed at one end to the wall, and provided with'means for tightening at the opposite end, arranged, as shown, so that the edges of the knives touch the yielding apron, and thus prevent jamming, as herein specified.

4. In a mixing-trough, the yielding aprons B, having a beveled or inclined receiving end, in combination with provisions for adjusting and tightening the other end, and with a revolving shaft having blades or knives revolving in contact with or near such apron, substantially as herein specified.

5. In combination with the knife-shaft of a horizontal clay-mixer, one or more ejectingwings mounted opposite the discharge-openings in such manner that the mixed material as it arrives is discharged or pressed out, but so that they remain stationary in case of jamming of stones between the wings and wall to avoid breakage while the shaft continues to turn, all substantially as herein specified.

In testimony whereof I have hereunto set my hand, at Berlin, in the presence of two subscribing witnesses.

. CARL SGHLICKEYSEN.

\Vitnesses:

' O. GRONERT, W. HANOKE.

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