Disclosed embodiments include a screen deck assembly that can be mounted on a vibratory screening machine. The screen deck assembly includes a plurality of elongated support members that extend in a first direction. A plurality of support rods are mounted to the elongated support members. The support members and support rods form a screen support surface. The support rods extend in a direction that is transverse to the support members.

A mechanical artifact shaker table is disclosed, including a deck having a wire mesh whereon a material is poured. One or more slidingly engage a frame to the deck. A shaft is connected to an engine, the shaft transfers movement from the engine to the deck to shake the deck, causing the separation of an artifact from the material.

A mechanical artifact shaker table is disclosed, including a deck having a wire mesh whereon a material is poured. One or more slidingly engage a frame to the deck. A shaft is connected to an engine, the shaft transfers movement from the engine to the deck to shake the deck, causing the separation of an artifact from the material.

A separator device is provided for sifting soiled animal bedding including a separator frame having a stand and at least one wheel. The stand engages and disengages with a floor to move from a stationary position to an ambulatory position. The separator device includes a flexible member and a screen attached to the flexible member for supporting the soiled animal bedding. An actuator is attached to the screen and applies an oscillatory force to the screen. The oscillatory force causes the screen to oscillate to sift soiled animal bedding as the animal bedding is moved along the separator frame. Reusable animal bedding material falls through the screen while clumped animal manure moves toward the front of the separator frame. A container supported by the separator frame collects clumped animal manure falling off of the front edge of the screen.

A separator device is provided for sifting soiled animal bedding including a separator frame having a stand and at least one wheel. The stand engages and disengages with a floor to move from a stationary position to an ambulatory position. The separator device includes a flexible member and a screen attached to the flexible member for supporting the soiled animal bedding. An actuator is attached to the screen and applies an oscillatory force to the screen. The oscillatory force causes the screen to oscillate to sift soiled animal bedding as the animal bedding is moved along the separator frame. Reusable animal bedding material falls through the screen while clumped animal manure moves toward the front of the separator frame. A container supported by the separator frame collects clumped animal manure falling off of the front edge of the screen.