As the cam -rotates, the roller-on the pivoted lever arm rides over its face to gradually move the batch hopper lower portion outwardly away from the 'mixing drum at a relatively slow -rate of movement. As the drum roller shaft is revolved to rotate the mixing drum, the-cam is also rotated. Positioned between the-cam and the hopper -bracket is a pivoted lever arm -carrying at one-end an idler roller adapted to engage the face of the cam, the other end of the lever being located in a position so as "to contact the bracket carried by the batch hopper. The batch hopper or bucket is provided at its lower-end portion'with a bracket or depending member or portion. In accordance with one form of the present -invention the hopper or charge bucket -actuating or agitating means or-mechanism comprises -10 the coupling to or extending of one-of the-drum roller shafts and mounting a cam upon its-outer end.
This jarring action'loosens : any material which may have a tendency to adhere to the inner walls-of the hopper and also has the- further advantage of causing or accelerating the flow of material :into -the mixer at a relatively faster rate than if the hopper were not in motion. This allows the hopper to be moved in and out at the bottom or discharge end thereof and to bump, with considerable force, against a part, such as a stop, which is preferably located on the mixer frame -at a point-adjacent to lower or discharge end of the swingable hopper.
Generally speaking, and in accordance with the present invention, the batch hopper or bucket is preferably mounted upon upright members of the mixer frame so as to hinge the hopper adjacent its top edge with relation to the frame uprights. In such type of mixer and to -prevent the aggregate from sticking to the inner walls or surfaces of the hopper or bucket, it is desirable to provide some automatic means for cleaning the same. In concrete mixers of the non-tilting type, it is often desirable to employ a batch honper or charge bucket for loading the mixing drum of -the -structure. One of the objects of the present invention is to provide novel and relatively simple means or mechanism which is operable during the rotation "6f the mixing drum, for automatically agitating the batch hopper or charging bucket to cause an even flow or movement of the materials into the mixing drum and to prevent such materials from sticking to and becoming accumulated upon the inner walls or surfaces of the hopper or bucket.Īnother object of the present invention is to provide improved means for varying the agitating action applied to the hopper or bucket in accordance with the nature or character of the mix or *aggregate being supplied to the mixing drum.Īnother object of the present invention is to provide a movable gate for controlling the discharge opening of the batch hopper or bucket, in which the gate also serves to separate the batch hopper or bucket from its agitating means at predetermined times.Ī further object of the invention is to provide improved means for adjusting the amount of travel during the swinging or agitating movement of the batch hopper -or bucket relative to the mixing drum, and also the speed of movement of said hopper.
It has to do, particularly, although not ex,clusively, with concrete mixers or apparatus of 'portable nature and of the non-tilting type, -wherein'the structure includes a batch'hopper or bucket for loading the mixer, and wherein means is provided for agitating the hopper or bucket to automatically clean the same, that is to say, to 'prevent aggregate from sticking to the inner side walls or surfaces of the hopper or bucket. With their extensive experience in the field of Mixer Grinder, USHA INTERNATIONAL LTD.The present invention relates to concrete mixers. is one of Trade India's verified and trusted name for listed services.
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