Patent GB-640974-A (GB)
Title: Improvements in machines for washing, dry cleaning or garment dyeing
Inventor: WALKER THOMAS BRADLEY
IPC: D06F21/04
Filed: 1948-03-27
Abstract: <PICT:0640974/IV (c)/1> <PICT:0640974/IV (c)/2> <PICT:0640974/IV (c)/3> In a dyeing machine of the type in which an inner horizontal cylinder A rotates within an outer cylindrical casing B, the inner cylinder A is imperforate for a portion A2 of its axial length and carries perforated lifters D projecting into the cylinder through longitudinal slots in the periphery thereof and provided with scoops D1 for picking up liquid from the annular space between the cylinder and the casing, the remaining portion A1 of the periphery of the cylinder being perforated to allow the liquid to escape from the cylinder, and means being provided for supplying liquid to the annular space between the cylinder and casing and for the removal of used liquid draining through the perforated portion of the cylinder. The liquid is fed through a pipe H1 to a tank H and flows through slots h1, h2 into the annular space below the rotating cylinder A. The scoops D1 pick up the liquid as the cylinder rotates, and the liquid is carried round by the lifters D gradually draining through the perforations therein on to the goods in the cylinder.  The size and number of these perforations is preferably such that some of the liquid is retained in the lifter until the latter reaches or has passed its highest point.  Used liquid drains through the lifters and the perforations in the part A1 of the cylinder into a tank J, the lifters in this case running the full length of the cylinder A but the scoops extending along the length of the tank H only. Baffle plates F prevent liquid picked up by the lifters from flowing beyond the end of the scoops.  The lifters may alternatively extend only over the imperforate portion of the cylinder.  An annular ring G and a weir plate M prevent liquid flowing from tank H from running directly into tank J.  In a modified form the imperforate portion of the cylinder may be at the centre of its length and perforated portions at each end, or vice versa.  Fig. 3 shows a modified construction wherein the lifters D are of truncated triangular shape and each is provided with a separate V-shaped plate d carried by cylinder end A3 and ring G so as to rotate with the cylinder. Inwardly curved extensions d1 of the cylinder co-operate with the plates d to form effective scoops, and also act as retainers for liquid picked up by the lifters.  The cylinder A is carried at one end on a trunnion b, Fig. 1, and is provided at the other end with a ring b1 which is supported on two rollers.  Instead of the inlet and outlet to the machine being tanks as shown, they may consist of pipes connected directly on to the casing, or to cavities formed on the casing.ALSO:In a dry cleaning machine of the type in which an inner horizontal cylinder A rotates within an outer cylindrical casing B, the inner cylinder A is imperforate for a portion A2 of its axial length and carries perforated lifters D projecting into the cylinder through longitudinal slots in the periphery thereof and provided with scoops D1 for picking up liquid from the annular space between the cylinder and the casing, the remaining portion A1 of the periphery of the cylinder being perforated to allow the liquid to escape from the cylinder, and means being provided for supplying liquid to the annular space between the cylinder and casing and for the removal of used liquid draining through the perforated portion of the <PICT:0640974/III/1> <PICT:0640974/III/2> <PICT:0640974/III/3> cylinder.  The liquid is fed through a pipe H1 to a tank H and flows through slots h1, h2 into the annular space below the rotating cylinder A.  The scoops D1 pick up the liquid as the cylinder rotates, and the liquid is carried round by the lifters D gradually draining through the perforations therein on to the goods in the cylinder.  The size and number of these perforations is preferably such that some of the liquid is retained in the lifter until the latter reaches or has passed its highest point.  Used liquid drains through the lifters and the perforations in the part A1 of the cylinder into a tank J, the lifters in this case running the full length of the cylinder A, but the scoops extending along the length of the tank H only. Baffle plates F prevent liquid picked up by the lifters from flowing beyond the end of the scoops.  The lifters may alternatively extend only over the imperforate portion of the cylinder.  An annular ring G and a weir plate M prevent liquid flowing from tank H from running directly into tank J.  In a modified form the imperforate portion of the cylinder may be at the centre of its length and perforated portions at each end, or vice versa.  Fig. 3 shows a modified construction wherein the lifters D are of truncated triangular shape and each is provided with a separate V-shaped plate d carried by cylinder end A3 and ring G so as to rotate with the cylinder.  Inwardly curved extensions d1 of the cylinder co-operate with the plates d to form effective scoops, and also act as retainers for liquid picked up by the lifters.  The cylinder A is carried at one end on a trunnion b (Fig. 1) and is provided at the other end with a ring b1 which is supported on two rollers.  Instead of the inlet and outlet to the machine being tanks as shown, they may consist of pipes connected directly on to the casing, or to cavities formed on the casing.