US1724850A - Concrete mixer - Google Patents

Description

Aug. 13, 1929. J OWEN 1,724,850

CONCRETE MIXER Filed Oct. 25, 1926 INVENTOR J/r'G/f /1. OWE/l.

Patented Aug. 13, 1929.

UNITED STATES PATENT. OFFICE.

JACK M. OWEN, OF LONG BEACH, CALIFORNIA.

CONCRETE MIXER. Application filed October 23, 1926. Serial No. 143,810.

An object of my invention is to provide a one end of the cylinder 1, said opening exconcrete mixer which is light in weight, and tending into the cylinder 2. A water intake may be readily transported from place to 16 is provided in the cylinder 2 at the same place and which may be set upon the ground end in which the opening 15 is placed, thus adjacent the structure requiring the concrete. as the dry aggregate falls through the open- 00 Another object is to provide a concrete ing 15 it comes in contact with the water mixer in which the dry aggregate is posientering the intake 16*, and is thoroughly tively fed to the point where water is supmixed therewith. V plied thereto, thus insuring a properly pro- The paddles on the shaft 8 are so ar-.

10 ortioned concrete. ranged as to convey the concrete from one 05 A further object is to provide a mixer end of the cylinder 2 to the'other, in which which is simple in construction and which an outlet 16 is placed. These paddles serve is highly ff ctive in op ration, N to thorou hly mix the dry aggregate and the Other objects, advantages and features of Water and provide a concrete of proper texinvention may appear from the accompanyture. It will be seen that the operation of ing drawing, the subjoined detailed descripmy mlxer is continuous in that the dry aggretion, nd th p nd d cl im gate may be constantly fed into the hopper I In the drawing 3, and the completed concrete is ejected from! Fig. 1 is a side elevation of my mixer with the outlet 16. It will also be apparent that 20 parts broken away to show interior conas the IIllX is moved toward the outlet 16 by 76 struction. the paddles lO, a lateral thrust or pressure Fig. 2 is an enlarged sectional view taken Will be exerted upon the same, thus causing on line 2, 2, Fig, 1, the mix to press constantly against the wall Fig. 3 is an end vie f m mixer. of the cylinder 2 until it is ejected from the 26 Referring more particularly to the drawoutlet 16. The conveyor 7 positively moves in v a given quantity of dry aggregate at any %Iy concrete mixer comprises two superglven speed of the shaft 5, consequently the posed cylindrical chambers 1, 2. A hop er amount of water entering at 16 can be gauged 3 is mounted on the cylinder 1 and opens so tha a pr p rly proportioned concrete is therein. Thi hopper i ad pted to r i e provided; and in my mixer the concrete will 86 the dry aggregate which goes into the comalways be in the same proportions; that is, pleted concrete. Legs 4, 4 are secured to the It Will not have an over-supply of water or cylinder 2 and are adapted to support the dr aggregate at any time. mixer. A shaft 5 extends longitudinally y mixer may be readily transported from through the cylinder 1 and is journaled in place to place on a truck and is liftedto the bearings 6, 6 at either end thereof. ground for use. When in position on the screw conveyor 7 is mounted on the ground and while being driven from suitable shaft 5, said conveyor being adapted to move gearing on the tr 1? is n ss y to p the dry aggregate through th cylinder 1 s vide a place for the mixer in order that it will be further described. A shaft 8 exmay not move. For this purpose, I provide tends longitudinally through the cylinder 2 an ext nsible arm 17 secured to one end of and is journaled in bearings 9, 9 at either the bearing 9, the other end being secured to end thereof. the truck axle or the like.

Paddles 10 are mounted on the shaft 8 and Having described my invention, I claim: 45 are adapted to move the concrete through 1- A c ncr te mixer mpr sing a pair f 1 0 the cylinder 2 as will be further described. superposed hollow cylinders having a con- A gear 11 is secured to the shaft 8, said gear neoting opening at adjacent ends, a hopper being rotated from a suitable source of power opening into the upper c linder, a screw consuch as.a truck used to convey the mixer. veyor in the upper cylin er for feedin mate- A chain 12 encircles the sprockets 13, 14 on rial to said opening, an outlet pipe in said the shafts 8, 5 respectively, thus rotating the lower cylinder adjacent the end opposite to conveyor 7 and paddles 10. said connecting opening and projecting lat- The dry a gregate is dumped into the hoperally from said lower cylinder and conveyper 3 and t e conveyor 7 moves the aggreing means in the lower cylinder 0 erable to 66 gate along the cylinder 1- to an opening 15 at convey the material along said cy inder toward said outlet pipe and simultaneously ex- (art a lateral thrust upon the material so that it will be forced against the wall of the -cylinder and forcibly ejected through said .hopper opening into said feed cylinder adjacent one end, a connecting opening adjacent the other end of said cylinder for passage of dry cement from sald feed cylinder to said mixing cylinder, a screw conveyor in said feed cylinder for forcing dry cement toward said connecting opening, a water intake in said mixing cylinder arranged so that the water strikes into the dry cement as it drops from the feed cylinder thus thoroughly comingling with said dry cement, a shaft extending the length of said mixing cylinder, impeller paddles on said shaft for mixin said water and cement and moving the m1x away from said opening, an outlet in said mixing cylinder at the opposite end to said water inlet, and gearing connecting said shaft and conveyor to cause them to be rotated together.

- 3. A cement mixer comprising a hollow feed cylinder, a hollow mixing cylinder, a hopper opening into said feed cylinder, a passage between said cylinders'for dry cement, a screw conveyor in said feed cylinder for forcing dr'y cement toward said passage, a Water intake in said mixing cylinder adjacent said passage arranged so that water strikes into the dry cement as it is moved from said feed cylinder to said mixing cylinder thus thoroughly comingling.

with said cement, a rotary mixing impeller member extending into said mixing cylinder, and gearing connecting said conveyor and said impeller member to cause them to be rotated together.

In'testimony whereof, I aflix my signature.

JACK M. OWEN.

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