Abstract: A finishing machine comprising a rotatable housing, which is preferably but not necessarily resiliently mounted, comprising: a finishing chamber for receiving and finishing parts with finishing media when the housing is in finishing position, a storage chamber adapted to receive media from the finishing chamber when the housing is rotated to a parts-separation position, a foraminous member for separating media from parts, apparatus for rotating the housing about a substantially horizontal axis from a finishing position to a parts-separation position and return, and apparatus for transfer of media from the storage chamber to the finishing chamber upon return of the housing from parts-separation position to finishing position, wherein the finishing chamber comprises an annular spinner member and complementary tub member, the spinner member being adapted to rotate about a generally vertical axis when the housing is in finishing position, and a rotational motion-producing assembly and associated drive operatively

Abstract: A method of producing finishing chips comprising the steps of providing a castable mixture of particulate abrasive grains and a solidifiable matrix, depositing the mixture into cavities of a generally-cylindrical, flexible mold having a plurality of cavities in the interior surface thereof conforming to the desired configuration of finishing chips to be produced, rotating said cylindrical mold during solidification of said mixture and the production of solid finishing chips within said cavities, and ejecting said solidified finishing chips from said mold by bringing said mold to an inside-out position, whereby said solidified finishing chips are ejected from said cavities, is disclosed.

Abstract: A gyratory machine for finishing parts, grinding such as paint grinding, or screening, having a fixed frame and a floating support resiliently mounted thereon, a finishing chamber mounted on the floating support, a gyratory motion-producing assembly affixed to the support comprising a vertically mounted housing, a plurality of bearings mounted in the housing, one or more vertically oriented shafts rotatably journaled in the bearings, and eccentric weights mounted on the shaft or shafts in fixed radial relationship thereto, a motor mounted on said housing for gyratory motion therewith and coupled to the shaft by a belt and pulley coupling assembly. The belt and pulley assembly applies rotating force to the shaft at a driving point or plane external with respect to the bearings, that is, at a point axially external to that portion of the shaft included between or defined by the bearings. In a further improved embodiment the annular finishing chamber is readily demountable from the floating support.

Abstract: The present application provides a finishing chamber lining, particularly suited for use in an industrial type finishing machine, comprising a compressible elastomeric substrate having a particulate, insoluble, abrasive material uniformly distributed therethrough and having a working or outer surface, the abrasive material having a particle size between one (1) and 100 microns and a hardness, as measured on the Mohs Hardness Scale, of at least one (1), the abrasive material being insoluble in the elastomeric substrate and in reactants and solvents employed in producing the same, the working surface comprising an outermost abrasive-interspersed, gripping surface which is adapted to be self-regenerating upon erosion in use. The finishing chamber lining increases the work action within the finishing chamber and minimizes inactivity, depression, or dead spots within the finishing chamber when in use with loose finishing media and workpieces to be finished therein.

Abstract: A gyratory finishing machine, of the type in which the finishing units gyrate about a common center and advantageously rotate about their own axis, is provided with loading and unloading means for loading and unloading selected finishing chambers without stopping the gyration of the other finishing chambers. This is generally accomplished through a null-point producing means for establishing a null-point relation between the selected finishing chamber and the loading and unloading means. The null-point can be established by bringing the selected finishing chamber to said common center, or by causing said loading and unloading means to gyrate in unison with the gyration of the selected finishing chamber. The loading and unloading can be effected while the selected finishing chamber is at the common center or by transferring the selected finishing chamber from the null-point to a remote loading station.

Abstract: Apparatus and method for surface finishing of parts or workpieces by attrition, in the presence of a liquid vehicle, with loose, comminuted, granular, or particulate solid finishing material or media, comprising relatively large finishing particles, i.e., chips, is described. The apparatus comprises a finishing chamber having a containing surface comprising an upstanding wall and a bottom symmetrically arranged about a common axis, being relatively rotatable about said axis, and having apposed closely-spaced surfaces, with a resilient seal having correspondingly apposed elements therebetween, the apposed elements of said seal being in closely-spaced apart or touching relationship and the surface of at least one of said apposed seal elements being irregular. The bottom, e.g.

Abstract: A gyratory finishing machine, of the type in which the finishing units gyrate about a common center and advantageously rotate about their own axis, is provided with loading and unloading means for loading and unloading selected finishing chambers without stopping the gyration of the other finishing chambers. This is generally accomplished through a null-point producing means for establishing a null-point relation between the selected finishing chamber and the loading and unloading means. The null-point can be established by bringing the selected finishing chamber to said common center, or by causing said loading and unloading means to gyrate in unison with the gyration of the selected finishing chamber. The loading and unloading can be effected while the selected finishing chamber is at the common center or by transferring the selected finishing chamber from the null-point to a remote loading station.