Abstract: A modular storage bin utilizes bin extension sections that are attachable directly to a standard lower cone section to provide increased storage volume that may be selected to accommodate needed volume increases and height and space restrictions. The bin extension may be selected from one of a box bin section or a cone bin section or a composite bin section. Multiple box bin sections with or without a cone bin section may be utilized. In addition, the box bin sections, the cone bin sections, and the composite bin sections may be made with side walls of varying heights. The supporting framework is operatively attached to the standard lower cone section and thus remains the same for all modular bin variations. This supporting framework utilize four vertical support columns each of which includes a bearing pad for supporting a load cell and a bin support surface. A discharge gate section attached to the bottom of the standard lower cone section includes a vibrator directly attached to one gate section side wall.

Abstract: A shaft seal is interposed between a tank and a rotating shaft extending through the tank and having a non-rotatable stator fixed to the tank and a rotor fixed for rotation to the shaft. A multiple labyrinth structure is formed between the rotor and the stator for preventing the ingress of contaminants from the tank and the egress of lubricant from the shaft. A self-aligning arrangement is constructed and arranged to permit the stator to shift axially along the shaft and compensate for various forces inflicted on the shaft as the shaft rotates.

Abstract: A saw for cutting an extruded, prestressed concrete slab having a length, a width and a thickness includes a framework assembly movable along the length of the concrete slab. A carriage system is rotatably supported from the framework assembly about a first vertical axis perpendicular to the concrete slab and is slidably mounted on the framework assembly for movement back and forth across the width of the concrete slab. A cutting arrangement including a rotary cutter is suspended from the carriage system over the concrete slab. The cutting arrangement is movable up and down along a second vertical axis substantially parallel to the first vertical axis and is also slidable along the carriage system.

Abstract: A saw for cutting an extruded, prestressed concrete slab having a length, a width and a thickness includes a framework assembly movable along the length of the concrete slab. A carriage system is rotatably supported from the framework assembly about a first vertical axis perpendicular to the concrete slab and is slidably mounted on the framework assembly for movement back and forth across the width of the concrete slab. A cutting arrangement including a rotary cutter is suspended from the carriage system over the concrete slab. The cutting arrangement is movable up and down along a second vertical axis substantially parallel to the first vertical axis and is also slidable along the carriage system.

Abstract: A mounting assembly for the primary mixing paddles in a pan-type mixer includes a single bolt paddle support arm mounting and adjustment device, and a two bolt paddle mounting feature, both of which are constructed and located to provide reliable adjustability and demountability and to protect the assemblies against the ingress of contaminants and abrasive wear from the materials being mixed. The single bolt clamping device also provides simple vertical adjustment of the paddle height in a manner which retains the adjustment mechanism enclosed against the entry of contaminants. The two bolt paddle mounting assembly encloses both threaded connections inside the body of the paddles, and includes a protective enclosing shroud and positions the exposed bolt heads at the back of the assembly out of the direct path of abrasive materials.

Abstract: A concrete mixing apparatus including a paddle type mixer and a cement and water container mounted on a scale. The cement and water container is divided into separate cement and water compartments mounted above and upon the mixer to permit gravity flow of their contents through an open top portion of the mixer. Aggregate is supplied by a belt conveyor through a side opening. All ingredients are supplied by weight based on the indication of the scale. The scale includes load cells supporting the mixer. The arrangement provides flexibility in the manner of introduction of cement, water, and aggregate into the mixer.

Abstract: A volumetric batcher is combined with a batch mixer so that similiar batches of powdered fluidizable material such as fly ash can be mixed with constant quantities of water resulting in mixtures having the same moisture. This enables their disposal at a land fill site or the like. To insure that the material in the batcher is settled to the desired degree before the inlet valve is closed, a high level indicator is provided which jogs the inlet valve to retard the rate of flow and this valve is allowed to continue to jog until a short period of time has elapsed during which the high level probe is constantly under the influence of the fly ash, at which time it is completely closed. Additional means are provided for insuring complete discharge from the batcher, measuring and timing the flow of water and removing air from the mixer and batcher during charging operations.

Abstract: The pan type mixing machine has vertical concentric annular walls between which material to be mixed is confined while paddles hung from a central revolving spindle churn such material. The transmission is supported on a ledge extending inwardly from the inner wall of the mixing space. The transmission is driven by a motor arranged outside the outer wall on frame members extending under the mixer, the frame members protecting the drive between the motor and the transmission. A novel seal is provided between the rotating spindle and the inner wall of the mixing chamber along with multiple means for adjusting the mixing paddles and protecting the arms that support them. The cover extending over the mixer space provides means for introducing liquid and also serves to reinforce the walls of the mixer when the latter is being lifted or lowered by a sling.