Johnson Crushers International

Ai Enterprises, Inc.

Cedarapids, Inc.

El-jay, Inc.

David F Peaks

Gary Heeszel

Herbert E Jakob

Gerald E Parker

Roger M Clark

Michael Barrett

Daniel C Drinkwater

J Donald Brock

John C Vendelin

R Ronald Collins

Peter B Alford

Randy Orre

A system for controlling the operation of an item of equipment for processing materials to produce a product which includes aggregate materials of various particle sizes in a predetermined weight ratio includes a sampling device for obtaining a sample of the product from a predetermined location and a gradation assembly. The gradation assembly includes a plurality of gradation screens and a weighing pan for measuring the weight of aggregate material. The gradation screens are supported by a frame in a generally horizontal attitude in a stacked arrangement, so that each screen in the stack has screen openings that are smaller than those of the screen immediately above it in the stack. The assembly also includes a vibrator for vibrating the screens and a mechanism for sequentially depositing the aggregate material that is retained on each screen or that passes through all of the screens in the weighing pan. The system determines the ratios of the weights of the amounts of the aggregate materials that are retained on each of the screens or that passes through all of the screens to the total weight of the sample, and compares each of the ratios so determined to a predetermined standard. The system also adjusts the operation of the item of equipment if the ratio of the weight of the aggregate materials that are retained on any of the screens or that passes through all of the screens to the total weight of the sample fails to meet the predetermined standard.

Automatic gradation unit

A system for controlling the operation of a first item of equipment for processing materials in connection with the production of a product which includes aggregate materials and a volatile component includes an oven, a gradation assembly having a plurality of screens, and a mechanism for transporting aggregate materials from the oven to the gradation assembly. The system also includes a mechanism for controlling the operation of an item of equipment if one or more of the ratios of the weight of the aggregate materials that are retained on any of the screens or that pass through all of the screens to the total weight of the aggregate materials fails to meet a predetermined standard. A preferred embodiment of the system also includes a mechanism for controlling the operation of a second item of equipment for combining asphalt cement and aggregate materials if the ratio of the weight of the asphalt cement in a sample of the product to the total weight of the sample fails to meet a predetermined standard.

Processing a product including aggregate materials and a volatile component

An adjustment mechanism for a rock crusher has an insert installed in the thread form of a bowl support and a locking ring. A bowl is threadably installed in the bowl support and lock ring assembly and is movable toward and away from a cone assembly. The insert is of a material that differs from that of the bowl and bowl support. The lock ring is movable to frictionally lock the thread forms of the bowl and bowl support against each other. The inserts prevent the galling and deformation of the thread forms previously experienced.

Adjustment for rock crusher

A cone crusher for rock that has a rotatable wedge plate that rotatably supports a cone for crushing rock. The wedge plate has bores for receiving sized weights for balancing the rotating assembly. The bores place the weights out of the travel path of the crushed material and are not subject to wear or abrasion during operation of the crusher.

Cone crusher for rock

A remote operable cone crusher employing all-hydraulic adjust and clamping systems features a hydraulic 'intensifier' for the clamp cylinders and an auxiliary pressure maintaining circuit for the adjust cylinders in order to overcome 'creep' under load.

Hydraulic system for remote operable cone crushers

A rotary table for an impact crusher has upper and lower table plates grooved to receive restraining lugs on impeller shoes which are clamped between the plates. The grooves also receive the restraining lugs of segmental wear plates which are held in place, vertically, by having end portions fitting in notches formed conjointly by shoulders on the impeller shoes and the inner faces of the table plates. The latter and the shoes have lip portions to shield the outer edges of the table plates from wear.

Growing community of inventors

Eugene, OR, United States of America

David F Peaks