US1780733A

US1780733A - Mixer

Info

Publication number: US1780733A
Application number: US269406A
Authority: US
Inventors: Adams Kempton
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-04-12
Filing date: 1928-04-12
Publication date: 1930-11-04
Anticipated expiration: 1947-11-04

Description

K. ADAMS Nov. 4, 1930'.

MIXER Original Filed April 12, 1928 1 NVENTOR flem ozon fldams' I ATTORNEYS Patented Nov. 4, 1930 UNITED STATES KEMPTON ADAMS, OF BEDDING RIDGE, CONNECTICUT MIXER' Application filed April 12, 1928, Serial Nd. 269,406. Renewed September 6, i929.

This invention relates tonew and useful improvements in mixers. I

Its object is to provide'a simple and eificient apparatus for mixing different materials; such as the ingredients of concrete.

The modern tendency in concrete practice is '-to use a stiff mix, and the result is that the mixers now available arenot well suited to present requirements. With former apparatus the thorough intermingling of the ingredients of a comparatively dry concrete is aslow; and tedious process. It has been found that better results can be obtainedby'manually working the materials together.

One of the specific objects of the present invention is'to provide a power driven machine in which the ingredients are stirred and worked thoroughly and rapidly in the desired consistency. 20 Anotherobject is to provide an arrangemerit for quickly and positively discharging the mixed materials fromthe apparatus. I

These and other objects of-the invention .will appear in the following specification.

In-the drawings, Fig. 1 is an elevation,

partly in sectiorn'of a machine which embodies this invention; 7

I I Fig. 2 is a plan view of the same apparatus;

and 1 l i Fig. 3'is a fragmentary sectional elevation of one of the parts of the apparatus shown "in the preceding figures. I

' This apparatus comprises a supporting frame having an annular horizontal portion "10 in which aresupporteda series of rollers "11 mounted to turn'freely about horizontal "axes, and another'series of'rollers 12'which turn about vertical axes.

120 isa frusto-conical shell having near its upper; end a rim 21. This rim is constructed to form a smooth" track 22 which rests upon the rollers 11 and a-fiange 23 which bears against the rollers 12. 111 113 are mounted two series-of

rollers

24 and 25, the purpose of 5 which willappearlater. 26 is agear member on the shell by means of which theshell and its connected parts are rotated. Tothe lower endof the shell 20 is affixed '3. bottom ring 30 which-carries a pivoted closure plate 31 which is held in closed farther up. e The machine is driven-from a power shaft 50, keyed to whichare gears 51 and 52 which position by a bolt 32. This member com prises a central post 33 connected to the ring by spider arms 34. On the post 33 are propeller blades which are disposed and constructed to forman interrupted double thread-screw of high pitch.

40 is a ring which rests on rollers 24 and bears against rollers 25. To it is affixed a ring gear 41 and an annular member 42. Af-. fixed to the latter are arms 43 which extend down into the shell 20 and are parallel therewith. These arms'are triangular in cross section, as shown at 44 in Fig. 2, and their lower ends are affixed to a ring 45. On these arms are vanes 46 which are angularly disposed as shown. The lower ends 47 of these vanes are curved to form scrapers and their upper portions are twisted as at 48. The vanes nearer the bottom of the cone are shorter than those are longitudinally slidable together by means of a bell crank lever 53. 54 is a countershaft which is connected to drive shell 20 in one direction through bevel gears 55 and a gear 56 which meshes with the annular gear member 26, and to drive'the member'42 and its arms 43 in the opposite direction through gear 57 which is in mesh with the'ring gear 41. When gear 51 is in the position shown'in Fig. 1, it drives the gear 58 on the-counter shaft 54. Gear 52 can be moved down to engage gears 59 to drive the countershaft. in the opposite direction. V

The operation of this apparatus willnow be'described. f Y

Desired materials are put into the shell 20 I and the latter with its post 33 and the blades 35 is rotated in an anti-clockwise direction; The blades passing through the mass within the shell tend to raise it and throw'it outwardly toward the inner moving surface of the shell. The material obviously Will run down and will be rotated to some extent by its contact with the shell. At the same time the arms 43 are rotating in the opposite direction. The forward edges of these arms and the forward ends 47 of the vanes 46 scrape the material from the surface of the shell and as these vanes move through the mass they move it inwardly and upwardly and at the same time turn it over. Thus the materials aremost thoroughly agitated and stirred and become completely intermixed in a very short time.

A great advantage of this apparatusis that even with such materials as those of a comparatively stiff concrete mix, it can be run at much higher speeds than are effective with former machinesui 7 Now when the mixing operation is com:

' pleted, the closure plate 31 is released and swung back into the position iniwhich it is shown at 31A in Fig." land held there by a" latch 36/ The mechanism is now reversed by means of a lever 53., Thejblades 35 and the vanes 46 Will now drive the mixed mate- .rials downwardly so that it will be discharged more rapidly and more completely than if it were permitted to drop out by the action of gravity alone. 7. v s

The apparatus described is shownwmore or less diagrammatically and is intended only toillustrate "the principle disclosed herein, as many modifications of'structure are possible without departing from the spirit and scope of the inventionas defined in the following claims. v

What I claim is v V1. A .mixer comprising a receptacle arranged to berotatedabout a'substantially vertical axis, means therein for moving material upwardly and outwardly, and other means therein for moving material inwardly and turning it over. I 1

1 m 2.'A mixer comprlsing a receptacle arranged to. be rotated about a. substantially kt/Alniixer' comprising afrusto-conical vertical axis, a removable bottom therefor, a plurality 'ofpropeller blades within there r V ceptacle and rotatable therewith for moving material, and means for reversing the direction of *rotationofthe receptacle and the receptacle andthe bladesand of saidvanes.

shell arranged tobe rotated about sub- 1 stantially vertical axis, and means disposed centrally thereof and supported from above 7 or moving materialupwardly and outwarde o u 5. "A mixer comprising a frusto-conical shell arranged to be rotated about a substan- V tially vertical axis and having an upwardly and outwardly tapered 'material supporting surface, means disposed centrally thereof the shell for moving material inwardly.

6. A mixer comprising a frustoaconical shell arranged to be rotated about a substantially vertical axis, means disposed centrally thereof for moving material upwardly and outwardly, and othermeans near the inner surface of the shell for moving material inwardly and turning it over.

7. A mixer' comprising a frusto-conical shell arrangedto be rotated about a substan tially verticala'xis, means disposed centrally thereof'and rotatable therewith for moving material upwardly and outwardly, and other means near. the .inner' surface of the shell 7 for moving material upwardly and ,outwardly, and other means near the inner surface of and rotatable in the opposite direction for moving material inwardly.

r 8. A mixer comprising a .frusto-con cal shellarranged to be rotated about a substantially. vertical axis, and a plurality of vanes rotatable in the oppositedi fection near the inner surface of said shell.

9. A mixer comprising a frusto-conical shell arranged to be rotated about a substan-r tially vertical axis,and a plurality of twisted :vanes rotatable in the opposite direction near the inner surface of said shell, said; vanes being arranged to lift the material and turn itovery V r ;10.: A .mixer comprising a frusto-Vconical shell arranged to be rotated about a substan tially vertical axis, means disposed centrally thereof for moving material upwardly and outwardly, and a stirring mechanism rotat-v ablein the opposite" direction near the'inner surface of saidshell arrangedto move material upwardly and inwardly and to: turn over. c

11. A mixer comprisinga frusto-conical shell arranged to be rotated abouta substantially vertical axis, a removable bottom therefor, a plurality of propeller blades disposed centrally within the shell and rotatabletherewith for moving material upwardly andout- Wardly, and a stirring mechanism rotatable in the opposite direction near'the inner surface of said shell arranged to lift the material and turn it over. 1 7

l2. A'mixer comprising afrusto-conical' shell arrangedto be rotated about a substan- V tially vertical axis, aremovablebottomtherefor, a plurality of spaced propeller blades disposedcentrally within the shell and rotat- I able therewith for moving material upwardly and outwardly, and arzstirring mechanism comprising a plurality of; spaced" twisted vanes rotatable in the opposite direction near the innersurface of said shell arranged to lift the material and turn itover. 1 13. A mixer comprising a frusto-conical shell arranged to be rotated about'a'substan- 7 tially verticalaxis, aremovable bottom'therefor, a plurality of spaced propeller blades disposed centrally within the shell androtatable therewith for moving material upwardly and outwardly, a stirring mechanism comprising a plurality of spaced twisted vanes rotatable in the opposite direction near the inner surface of said shell arranged to lift the material and turn it over, and means for reversing the directions of rotation of the shell and propeller blades and of said stirring.

mechanism.

14. A mixer comprising a receptacle, means therein for moving material upwardly and outwardly, and positively actuated means movable independently of said first named means for moving material inwardly and turning it over. a p

15. A mixer comprising a receptacle, means therein for moving material upwardly and outwardly, and positively actuated twisted means movable independently of said first named means for moving material inwardly and turning it over.

16. A mixer comprising a receptacle, means disposed centrally therein for moving material upwardly and outwardly, and other means within the receptacle for moving the material inwardly and turning it over.

17. A mixer comprising a receptacle, means disposed centrally therein for moving material upwardly and outwardly, and other means within the receptacle and disposed near the inner surface thereof for moving the material inwardly and turning it over,

18. A mixer comprising a frusto-conical shell, rotatable means disposed centrally thereof for moving material upwardly and outwardly, and a stirring mechanism rotatable in the opposite direction near the inner surface of said shell arranged to move material upwardly and inwardly and turn it s over.

In witness whereof, I have hereunto set my hand this 10th day of April, 1928.

KEMPTON ADAMS.-