Abstract: In a paint roller having an inner core with an outer annular surface and a radially resilient, substantially cylindrical paint roller medium extending around and affixed to the inner core for rotation therewith, the improvement wherein the outer medium has a substantially uniform outer diameter and comprises a base of resilient porous material, and a distribution of non-porous material which masks portions of the base. Preferably the distribution of non-porous material is random.

Abstract: In a paint roller having an inner core with an outer annular surface and a radially resilient, substantially cylindrical paint roller medium extending around and affixed to the inner core for rotation therewith, the improvement wherein the outer medium has a substantially uniform outer diameter and comprises a base of resilient porous material, and a distribution of non-porous material which masks portions of the base. Preferably the distribution of non-porous material is random.

Abstract: Paint rollers (11-15) having an outer annular paint roll medium (21-25) configured and constructed to produce special effects when rolled over a work surface in a positive or negative mode of painting or in one case, in both modes simultaneously. In three embodiments, the outer medium (21-25) is constructed from a sheet of flexible material such as a sheet of thin non-porous (e.g., plastic) material or a sheet of thick resilient porous material by loosely compacting a blank of the material into a preformed shape and then wrapping the preformed shape around and affixing it to an inner roller core (16). In another embodiment, a sculptured outer medium (24) is formed by wrapping a preformed shape of sponge or sponge-like material around and affixing it to an inner roller core (16). In a further embodiment, the outer medium (25) is formed by a base layer (80) of resilient porous material and by relatively hard areas of non-porous material (88) at the outer surface of the base layer (80).

Abstract: A press for printing an electrical circuit component directly onto a substrate with an electrically-conductive liquid includes a press surface having a printing direction and a direction transverse thereto. A plurality of liquid-carrying cells are disposed on the press surface for carrying the electrically-conductive liquid, the cells being in liquid communication with each other in both the printing direction and in the transverse direction. A method of making such a press includes the steps of providing a press surface and engraving the press surface with the plurality of liquid-carrying cells which are in liquid communication with each other in both the printing direction and in the transverse direction.

Abstract: An apparatus for applying hot melt glue to back surfaces of book blocks, wherein these back surfaces are distributed in fan-like fashion, by means of glueing rollers, two of which are consecutively arranged conically-shaped rollers which are adjustable in their angular setting, whereby the tearing out resistance of the sheet edges is increased. Each glueing roller is supported in an individual glue pan which may be separately pivoted and adjusted in its height. By adjusting of angular setting of the aforementioned two rollers the vertical position of each glue pan may be corrected. This will ensure a uniform and sufficiently large glue layer over the back surfaces of the blocks throughout the entire process of glueing.

Abstract: There is disclosed a device for applying a liquid adhesive onto the surface of bottles moving in upright seriatim fashion on a horizontal moving conveyor at an adhesive applying station. The device includes a container for liquid adhesive and a pivoted frame supported over the container which supports a beveled feed wheel on an inclined shaft driven by its connection to an electric motor. The beveled feed wheel rotates partly submersed in the adhesive and engages a cylindrical applicator roller freely rotatable on a vertical axis at the applying station. The outer periphery of the roller is comprised of a porous, resilient layer, e.g. a spongy urethane layer which receives adhesive from the beveled facing of the feed wheel. The beveled facing of the latter is non-porous and smooth, e.g. a steel facing.

Abstract: A roller device and method for maintaining a uniform surface contact along a line of axial trangency with respect to one or more rigid cooperating surfaces having irregularities, the roller device comprising a rigid solid- or cylindrical-type core loosely circumscribed axially with a flexible sleeve, the space between the core and the sleeve being substantially equidistant and filled with a curable plastic foam material to obtain a uniform contact and nip width when in rotational contact with a cooperating surface.