Abstract: Stencilling apparatus having a trough type fluid scoop positioned behind, parallel to, and spaced from the stencilling squeegee, the scoop being pivotally shiftable through a scooping motion to scoop up excess fluid after the squeegee is elevated. The pivotal shifting is from a first scoop position wherein an edge of the scoop serves as a flow coater to a second position wherein the scoop retains the fluid scooped.

Abstract: Stencilling apparatus having a trough-type fluid scoop ahead of the squeegee and pivotally shiftable in a rearward direction from a fluid dumping position, through a sweeping fluid scooping action adjacent the screen, to a fluid retention position in engagement with the squeegee.

Abstract: A structural cover skin for components of a fluid-medium craft, especially the foil components of the craft, wherein a layer of heat shrinkable, polymeric film, preferably of polyvinyl fluoride is bonded to a layer of heat-shrinkable polymeric film and/or fabric, preferably of polyester, to form a special laminated heat shrink covering material particularly useful for man-flown airplanes. A method for covering the frame portions includes an encapsulating envelope of the noted material or an overlapped wrapping which is heat shrunk tautly to the contours of the frame.

Abstract: A squeegee assembly for stencilling apparatus employing cooperative front and rear panels astraddle the squeegee, the panels being shiftable between (1) an extended condition away from the squeezee and in which such cooperatively form an open bottom chamber for the stencilling fluid about the squeegee, and also the rear panel serves as a flow coater and the front panel serves as a fluid barrier, and (2) a retracted position at the squeegee to close the fluid chamber about the squeegee. BACKGROUND OF THE INVENTIONThis invention relates to stencilling apparatus, and more particularly to a stencilling assembly with control of the stencil fluid.In recent years, several developments have been made in squeegee assemblies of stencilling apparatus to obtain better control of the stencil fluid characteristics during continued stencilling.

Abstract: Stencilling apparatus having a print and flow action relative to a combination squeegee and flow coater assembly, wherein excess stencilling fluid ahead of the squeegee can flow through the assembly, by flow over the squeegee into a control reservoir behind the squeegee and ahead of the trailing flow coater, and a controlled layer of the fluid flows from the reservoir beneath the lower edge of the flow coater onto the underlying stencil screen.

Abstract: A stencilling printer with a flow coater specially mounted to sense viscosity of stencil fluid flowing from a reservoir between the flow coater and the squeegee, the flow coater being shiftable and operably associated with a supply of viscosity-altering liquid for controllably altering the viscosity of stencil fluid in the reservoir.

Abstract: Web stencilling and drying apparatus for web stock with at least one intermittent feed stencilling station and slit registry means for stock therefor, a continuous feed ultraviolet drying station, and first and second dynamic flow pressure differential web controllers upstream and downstream of the ultraviolet drying station, the first one including sensors responsive to the length of the web loop therein to control web intermittently fed thereto and continuously fed therefrom.

Abstract: Slit registry apparatus and method for registry of flexible, generally planar stock as for stencilling thereon, involving formation of periodic transverse slits and adjacent edges in the stock, at least one of the edges and the adjacent stock zone or area being offset from the plane of the stock for engagement of this offset edge by a registration surface.

Abstract: A tray suitable for providing a uniform coating of predetermined thickness on sheet material includes a generally V-shaped trough for dispensing a fluid contained therein through a plurality of apertures formed through the bottom of the trough and spaced along its length. Along the outer surface of the apex of the V-shaped trough, there is formed a channel communicating with the apertures and defining a pair of spaced continuous blades extending along the length of the trough and spanning the apertures. The lands of material between the apertures of the trough are tapered to a point on the side of the trough adjacent the channel to provide a uniform supply of coating material within the channel. As the trough is moved across the surface of a sheet to be coated, the trailing blade which is spaced at a desired height from the sheet material, provides a uniform coating of fluid to the sheet.

Abstract: A screen printing press employs a screen carriage securing a printing screen frame and screen therein and which reciprocates through print and return strokes over a reciprocally rotating print cylinder. Printing stock is advanced between the print cylinder and the screen during printing strokes. The screen carriage includes a disengageable drive which permits feeding print stock through the machine without effecting printing thereon. The screen carriage further includes adjustable screen frame holding means to which the screen frame is slidably mounted permitting partial or total removal of the screen frame from the screen carriage. A fully adjustable squeegee means and flow coater assembly is positioned above the screen and is provided for elevating and longitudinally shifting the flow coater and squeegee assembly away from the printing area for inspection and maintenance of the press.