Patent GB-190327763-A (GB)
Title: Improvements in Centrifugal Machines.
Inventor: MACFARLANE JAMES WRIGHT
Filed: 1903-12-18
Granted: 1904-12-15
Abstract: 27,763. Macfarlane, J. W. Dec. 18. Hydro-extractors in which sugar or other substances are purged, washed, or steamed. Means are provided for interlocking the parts so that the respective operations shall only be performed at their proper times and in their proper sequence, with the result that the different grades or densities of the liquid which has washed the sugar are directed into the particular gutters intended for their reception. Figs. 1 and 2 show in plan and elevation, by way of example, a centrifugal machine arranged for two separations of the effluent. When the basket is to be charged, the discharge spout A is then over the second syrup gutter B<2> and has been draining the monitor case B, the handle K' of the cock K having been brought to its first closed position as shown by the dotted lines N'. This movement shifts the position of the link J which, by reason of the arm A<3> upon the spindle A<4> of the spout, allows the spout to be moved as soon as the trigger-lever G is freed from the snug A<1>. The projection J' on the link J is also made to bear on the weighted end M' of the tumbler lever M<3> so that the opposite end M' is moved out of the way of the charging-valve D. The operating-lever F can then be moved to open the valve D, the extreme open position being shown in dotted lines P, Fig. 1, when the massecuite flows into the basket C, and the valve being closed again when the basket is charged. The opening movement of the lever, when the position shown in dotted lines at Q is reached, causes its moving end to free the trigger lever G from the snug A' on the spindle of the discharge spout with the result that the spring H draws the spout over the first syrup gutter B<1>. When the first syrup is run off, the handle K' of the cock K is moved to the second position R so that steam or washing-liquor is admitted between the monitor case and the basket for cleansing purposes. The tumbler lever M<3> is also freed when the handle is so moved and again locks the charging-valve. The lever F is arranged to be capable of moving in and out in the pivot F' on which it turns while the handle is pulled to open or close the valve D. The moving end of the lever acts upon the end of the spring-controlled lever G so as to free it from the snug A<1>. When the case has been washed, the handle K<2> is turned to its third position, as shown, to shut off steam, and the link J moved so that the end of the slot J<1> bearing on the pin A<2> moves the discharge spout over the second syrup gutter B<2> where it is held by the lever G. The operator then lowers the inside steaming or washing pipe L<2> into the basket C, and moves the handle of the cock to its fourth position S to allow steam to enter the inside of the basket to treat the sugar finally. The effluent discharges through the spout which is still over the second gutter B'. When the steaming is completed, the handle of the cock can be returned to its first closing position N' without shifting the discharge. Other operations may be similarly locked, or two or more gutters may be employed where other separations of the effluents are desired.