Patent GB-190211372-A (GB)
Title: Improvements in the Manufacture of Earthenware Sanitary Pipes, Cable Conduits, Ridge Tiles, Roofing Tiles and other like Objects
Inventor: STANLEY REGINALD
Filed: 1902-05-17
Granted: 1903-05-16
Abstract: 11,372. Stanley, R. May 17. Moulding pipes, cable conduits, ridge and roofing tiles, &c.-The invention is shown as applied to machinery for making socketed pipes. The machine has a core and mould between which the material is compressed by two plungers, and it has arrangements for feeding the material, lubri- cating the core and the mould, groov- ing the ends and polishing the sur- face of the pipe &c., opening the socket end of the mould, and supporting the finished article while it is being removed. The stationary core q is held by the arms r on the standards c, and the movable mould or die-shell o normally hangs on the arms p. The lower plunger g and the lifting-standard h, which lifts the mould, are worked by the piston-rod k of a hydraulic or other cylinder; a second cylinder on the top of the machine works the upper plunger n. The exterior grooving of the lower end of the pipe is produced by radially-moving, spring-held blocks 2, forced inwardly by inclines 3 on the head of the standard h. The internal grooving of the socket end is done by similar blocks w extruded from the core q by the tapered end of a rod s attached to the upper plunger n acting through spring-returned bolts t, of which the inner ends are pivoted so as to give when the rod ascends with the top plunger. The polishing of the pipe is effected by pushing it up over the core and then allowing the mould to drop so that the inner and outer surfaces are rubbed. For lubricating the inside of the shell, and for supporting the pipe during withdrawal, quadrant frames 4, carrying lubricating-pads, are mounted on the top of the core q, Fig. 3. They are normally drawn in flush with the core by the cord 11 and heavy counterpoise 14, but are extended, when that weight is lifted, by the lighter weight 10 acting through a second cord 6. The weight 14 is lifted by the lever 15 struck by a roller tappet on the frame h on its up- stroke, and is held up by a spring catch engaging a hole 29 in the cam 21 which is connected to the lever 15 by a rod 19. This catch is tripped by an incline 39 on the feed-box, and a pin 37, during the further motion of the feed-box, engages a notch in the cam, turning it back and gently lowering the weight 14. Lubricant is supplied to the pads from a reservoir 58 on the shell when it is at the top of the stroke, the supply valve 59 being opened by a tappet. In the modification shown in Fig. 2<a>, the quadrants forming the supports are drawn in or out by toggles 49 operated by a stop rod 48 and various trips on the frame &c. The mould and core may also be lubricated, as shown in Fig. 12, by rings 77, 78 supplied from a reservoir 79 and worked up and down by a screw 76 and gearing, this appa- ratus being carried by the movable feed - box. The upper end of the mould may be made in two halves 82, 83, Fig. 9, with lugs projecting into inclined slots 89 in plates 90 actuated at the end of the stroke to open the mould and free the outlet end of the pipe. The feed-apparatus is moved over the press by a rack and pinion 94, Fig. 13, and the clay is fed into the mould by a vertical spindle 97, on which worms, agitating- plates, &c. may be mounted.