Patent GB-173620-A (GB)
Title: Improvements in the process of stencilling, and apparatus therefor
IPC: A63H9/00
Filed: 1920-10-07
Abstract: 173,620. Dietrich, J. G. Oct. 7, 1920. Stencils and stencilling.-In collectively stencilling a number of blanks by a single stencil, they are placed on a support or tray with the whole of their surfaces exposed and the stencil is then applied to the blanks. The invention is shown in its application to the colouring of plates, cut out to represent the bodies &c. of dolls of various patterns, by means of powder carried by a stream of air. A flat metal tray 17, Figs. 1 and 2, having a bent-up end 29 is provided with pins 18 engaging holes 19 corresponding to the shoulder and hip joints of the body parts 25,' 26, 27 of dolls representing an officer, soldier, and girl respectively, the pins 18 extending flush with or below the upper surfaces of the blanks. A plate 1, Fig. 3, having stencil apertures 3 is laid on the blanks and registered by holes 16 engaging pins 15 on the tray. The patterns are relatively inverted so that the upper and lower sets of blanks in Fig. 1 may be reversed and interchanged for colouring the other sides. The apertures 3 may extend beyond the blanks for colouring the edges, and a single aperture 3<a>, Fig. 3, may expose the front, rear, and top edges of two collars. Several modified methods of positioning the blanks are described. Arms may be positioned by one pin 18 engaging a joint hole and another extending between the thumb and first finger; legs by a pin through a joint hole and a bar shaped out to fit the boot soles; and heads, Fig. 12, by fixed bars 22<a> notched to engage the necks and tops of heads; or by a pin through the neck-joint and longitudinal ribs preventing side motion. The blanks may also be retained in position by studs fitting holes in the tray, arranged to correspond to the outlines of the blanks, and having flanges engaging the sides of the blanks and heads passing through the stencils. In a further modification, the tray, Fig. 17, is provided with a large number of holes 10 in which studs are selectively positioned to engage the sides of the blanks. Corresponding holes may be provided in the stencil outside the pattern to allow passage of the air carrying the colour. The studs may have eccentric heads which are turned to press against the blanks, or they may be screwed and have conical heads. They may also be adjustable in slots and secured by wing nuts under the tray. To facilitate the arranging of the studs in the proper holes 10, Fig. 17, a sheet of paper with the pattern printed, traced, or photographed thereon may be placed on the tray and subsequently torn off, preferably after the blanks are placed on the tray. In the latter case, oil paper may be used so that the blanks adhere to the remaining parts. When no paper is used, the tray may be coated with wax to assist in seating the blanks. In another modification, pins 11, Fig. 25, pass through the tray 17 and the stencil 1, and are retained by a plate 17<a> held by a spring clamp 31 secured by pins 15<a> passing through the stencil, tray, and plate. The blanks may also be positioned by means of a frame consisting of notched bars similar to those shown in Fig. 12, joined at their ends. To colour the other sides of the blanks when this frame is used, the stencil is removed, a tray 17<b>, Fig. 29, similar to the tray 17, is then placed on the frame, the whole is reversed, the tray 17 is removed and the stencil used again, the blanks being arranged symmetrically so that the same side of the stencil can be used.