AFS Foundry Sand Testing Equipment Operating Instructions Manual

RIDSDALE-DIETERTHIGH DRY STRENGTH ACCESSORY FOR USSM (AFS)IGENERAL PRINCIPLESThis accessory for the Universal Sand Strength Machine increases the Dry Compressionand the Dry Shear capacities of the machine by a factor of 3.IIDESCRIPTIONThis unit consists of two specially shaped arms which are hinged at one end by means of ashaft mounted in ball bearings. The aluminium arm bolts onto the pusher arm of theUniversal Sand Strength Machine.Compression heads which hold the sand specimen fit between the arms and load is appliedto the specimen by means of a ball point in the top lug of the pendulum weight which bearsonto a hardened steel pad on the end of the moving arm.91