GB189800458A - Improved Method or Methods of Making Forms, Lengths, Saddles, Pins and the like for Potters' Use, and Means employed therefor. - Google Patents

Abstract

458. Arrowsmith, T., Arrowsmith, H. T., and Arrowsmith, J., [trading as Arrowsmith & Sons, Thomas]. Jan. 7. Moulding tiles, thimble pins, spurs, &c.-Marl or clay is forced by a pug-mill through a die c, made with a curved or bellied portion d at the centre, so that the material is caused to spread outwards and form strips with sharp edges. The stream of clay passes on to inclined boards mounted on flanged rollers, and is severed into lengths by a metal wire, blade, or rotary disc. The boards with the lengths of clay are afterwards placed under a slitted gauge plate, and cut into lengths for tiles &c. by a knife or rotary cutter inserted through the slits. Rods or strips for making stilts, spurs, saddles, printers' bits or distance-pieces, and the like for the use of potters, are produced by forcing the clay through a die plate i which is made with perforations of the desired shape, and is inserted in a frame or casing at the mouth of the pug-mill. Fig. 11 shows a pressing-plunger m carrying a die or mould n for producing thimble-pins. The lower die or bed k is made with dovetail recesses to receive clay, and the sides m<2>, m<3> of the plunger extend below the die n so as to enclose the block k to prevent the escape of clay during the pressing operation. In order to prevent the adherence of the moulded thimble-forms to the die n, the bat of clay is oiled on the upper surface before it is placed on the lower die block. When the upper die is raised, the thimbles adhere to the clay in the block k, and are removed along with a base-plate or sheet of clay by a metal slice or shovel. Fig. 16 shows a knife for cutting off definite lengths from a long strip of clay. An adjustable bar v is placed against the end of the clay, and the knife r is pressed against the strip to cut off a length equal to the distance between the bar and blade.