Patent GB-190919282-A (GB)
Title: A New or Improved Machine for Dipping and Glazing Bricks, Tiles, Pottery Ware, and like Articles.
Inventor: CLARK FREDERICK EDWIN
IPC: B28B11/04
Filed: 1909-08-21
Granted: 1910-08-22
Abstract: 19,282. Clark, F. E., and Johnson, A. Aug. 21. Coating - machines.- Rotary disk machines for dipping bricks, tiles, pottery-ware, &c. are provided with grippers successively operated to take up the articles from a charging - table, dip them a predetermined number of times in the " body " o r " glaze contained in a pan of particular construction, and discharge them on to a delivery table. The disk a, driven through gearing from a shaft e, is provided along the greater of its circumference with grippers each consisting of a rotatable spindle k and a non-rotatable sliding spindle l, both of which carry gripping pads &c. m, the spindle l being in one with or connected with a spring bolt n, the end of which projects through the disk a and at specified times is engaged by a dog o on a spring-pressed rod 2, which is operated against the spring by studs or pins 9 on the disk a engaging the teeth of a wheel 8 mounted on a shaft 7, which carries a cam 5 to engage with a roller 6 on the rod 2. The number of studs is so proportioned to the number of teeth on the wheel 8, that the disk makes any predetermined number of revolutions, in the example shown, two, between consecutive operations of the rod 2 to open the grippers. The charging-table z is kept normally in a raised position by the spring on the rod 2, the table being mounted on a shaft 1 connected by an arm 3 to the rod 2, which, when operated by the above-described mechanism to bring the dog o into the path of the bolts n to open the grippers, lowers the table to its charging position. The pans for containing the materials, such as " body " and " glaze " are arranged side by side or consist of a single divided vessel, and are mounted on a spindle q in a slotted bearing r, the spindle being rotated by a chain v<1> and chain-wheels v, v<2>, which are operated by a shaft wand crank x and are raised or lowered by a weighted lever s operated by a hand-lever u, the pans being held at any desired height by engaging the lever u with a rack y. The delivery table 12, with blades 13 adapted to pass beneath the grippers, is operated from the shaft e by a cam 14 engaging a spring-roller on a rod 19, which rocks a lever 18 connected to a rod 19 carrying a pawl to engage a ratchetwheel on the table, which is prevented from swinging when the cam action is inoperative by a spring plunger 20 engaging notches 21. The table is raised to receive an article when discharged from the grippers, by providing a cam track for its rollers to run on, the upward movement of the table being against a spring 24. The disk may be rotated slowly for charging and discharging, and rapidly for dipping, by connecting the driving-shaft e with a slow-speed pulley f by means of a ratchet clutch, and securing upon the shaft a high-speed pulley g with the corresponding loose pulley h, the beltshifting device of the pulleys g, h being operated by the rod 2. To dip more than one face of a brick or the like, the grippers are rotated by providing the spindle k with sprocket-wheels and operating them by a chain.