Abstract: A rotatable barrel assembly, generally referred to as a metal finishing barrel, includes a latch assembly that selectively secures or latches the door during a portion of the barrel rotation. In a preferred arrangement, a latch member of the assembly is weighted so that a latch finger prevents movement of the door from its open position. As rotation of the barrel continues, the weighted latch member then pivots to a second position where the door is free to open and allow unloading of the contents of the barrel.

Abstract: A rotatable container assembly for use in surface treatment of particulate workpieces includes a container having opposed head ends and a side member defining a work cavity therein. An aperture is formed in a minor portion of the side member and a door arranged for opening and closing relation with the aperture. Means for imparting generally arcuate movement and generally radial movement advances and retracts the door between open and closed positions. Preferably, the movement imparting means includes a cam slot and cam follower arranged between a driven gear and a closely adjacent end plate. Push blocks assist in selective rotation of the container both relative to and with the door. Plural locking slots are arranged on the periphery of the end plate for operative engagement with a lock member extending from the gear.

Abstract: A rotatable container assembly for use in surface treatment of particulate workpieces includes a container having opposed head ends and a side member defining a work cavity therein. An aperture is formed in a minor portion of the side member and a door arranged for opening and closing relation with the aperture. Means for imparting generally arcuate movement and generally radial movement advances and retracts the door between open and closed positions. Preferably, the movement imparting means includes a cam slot and cam follower arranged between a driven gear and a closely adjacent end plate. Push blocks assist in selective rotation of the container both relative to and with the door. Plural locking slots are arranged on the periphery of the end plate for operative engagement with a lock member extending from the gear.