Abstract: An apparatus for immersing lightweight articles such as computer discs in a violently agitating electroplating bath comprises an immersible carousel driven for rotation from both ends of the carousel by a single drive means. The carousel is supported on easily replaceable bushings and comprises a pair of spaced wheels and a plurality of article support dowels which are individually rotated about their own axes during rotation of the carousel, the roratable dowels extending between the carousel end wheels, and the dowels being readily removable from the wheels for replacement of the articles to be electroplated. A positive locking means is provided for holding the dowels in position on the spaced carousel wheels without the necessity of spacer rods on the support carousel and the attendant interference with rapid removal of dowels and articles supported on the dowels which is caused when spacer rods are present.

Abstract: A method for producing a number of microprisms from a plate of material includes the steps of blocking the plate onto a wedge and cutting a number of fiducial grooves in the wedge which are used in a subsequent step to determine the depth to which a polishing operation is continued. Using the method of the present invention, microprisms measuring approximately 375 microns in width and approximately 5 centimeters in length have been produced.

Abstract: The apparatus is capable of being immersed in a liquid bath and supports at least two dowels or rods on which are mounted apertured discs in spaced apart relationship. Each rod has a gear fixed near one end and has a plurality of axially spaced circumferential grooves in each of which respective apertured discs are disposed. A pair of spaced wheels are provided to rotate in unison about a fixed axle. Each wheel has a plurality of radially disposed slots into which respective rods are disposed so that each dowel is capable of rotating about its own axis. The axle supports a fixed sun gear disposed near one wheel and each rod has at one end a planet gear that meshes with the sun gear whenever the respective rod is nested within a respective pair of slots on the wheels. Means are provided to rotate said pair of wheels about said axle. To prevent the rods from falling out of their respective slots as the wheels rotate, a C-shaped keeper device is disposed around each wheel and in a fixed position.