Patent GB-190405722-A (GB)
Title: Improvements in Apparatus for Spraying Cards, Paper and other Materials.
Inventor: BURDICK CHARLES LAURENCE
Filed: 1904-03-08
Granted: 1905-03-02
Abstract: 5722. Burdick, C. L. March 8. Painting and varnishing.-Apparatus for spraying one or more colours on cards, papers, tiles, and thin wood blocks comprises a number of spraying -nozzles mounted on a reciprocating frame moving over the cards &c., which are placed on another reciprocating frame moving perpendicularly to the nozzle frame. The cards &c. are held up against the stencils when the spraying is performed, and surplus paint is removed by a suction brush. Fig. 1 shows an end elevation and Fig. 2 a plan of the machine. The frame carrying the nozzles 120 is formed by bars k connected by bolts l, and is reciprocated by a crank h and connecting-rod i, motion being derived from a pulley e mounted on to the shaft d. By means of toothed gearing, the cam w on the shaft v is rotated from the shaft d and acts upon the rod y which, by means of a pin-and-slot mechanism, rotates the pinion 2 gearing with the rack 4. This rack is connected to a reciprocating frame q, which slides in grooves in a table s and carries the cards &c. j and is provided with projections p to remove them as they are placed on one at a time. The table s is made to rise and fall by means of a cam 9 which actuates the rod 10. This rod is connected to the table by toggle-levers 11 and, as the table cannot move laterally, being provided with legs 12 guided in slots in the main table a of the machine, it is constrained to move vertically, thus holding the cards &c. against the fixed stencil 8. The frame q is provided with projections 6 which feed the cards &c. in a forward direction only, being below the level of the surface of the table s on the return movement. Above the travelling frame is mounted the reciprocating carriage k, guided in the frame m and carrying the spraying-nozzles 120, communicating by tubes 13 with colour receptacles 14 and by tubes 15 with a compressed-air supply. Fig. 3 shows the method of securing these nozzles to allow of their positions being altered. The clamping-screws 16 are placed in slots in the frame k and are provided with fly-nuts. Each nozzle is provided with a lever 19 for opening the air and colour valves of the nozzles, and with springs to effect their closure as described in Specification No. 7344, A.D. 1902, all arranged so as to allow the air valves to open before the colour valves. The levers 19 are provided with rollers which work on cams 25 fixed to the frame m to operate the nozzle valves when the carriage k is moved. Brushes 26 composed of india-rubber with perforations, or with one long but narrow channel passing through the same, or with enclosed sides enclosing felt or other porous material and a hollow back which is connected to an air-exhausting apparatus by means of tubes 27, are mounted on the frame k for the purpose of removing surplus colour from the stencils. The brushes may be moved in any other convenient manner over the stencils, and the carriage k may be operated by equivalent mechanism to the crank and connecting-rod, and, instead of the spraying- devices being moved, the carriage on which they are mounted may be moved.