Patent GB-451515-A (GB)
Title: Improvements in crockery washing machines
IPC: A47L15/24
Filed: 1935-02-22
Abstract: 451,515. Washing dishes. LUTOLF, G., and LUTOLF, T., 25, Maihofstrasse, Lucerne, Switzerland. Feb. 22, 1935, No. 5666. Convention date, Feb. 23, 1934. [Class 138 (i)] A crockery - washing machine comprises three containers 5, 6, 7, Fig. 1, the first containing hot lye, the second spraying apparatus, and the last hot water. The crockery is placed in baskets a, b, c, which are lowered into each container in succession. In the first container the crockery is rocked in the lye. It then passes into the second container and is rinsed in the third in boiling water. The baskets are moved horizontally by a rod and are raised and lowered by pistons in cylinders. A series of cams and valves operate the liquid supply. The containers 5, 6, 7 are housed in a framework 2 supporting a roof 3 and chimney 4. Three vertical cylinders 8, 9, 10 are secured to a main frame and have bollow piston rods 14, 15, 16, attached to pistons 11, 12, 13. The upper ends of the piston rods are guided by round rods 18, 19, 20 in a frame 17. Z shaped brackets 22, 23, 24 at the upper end of piston rods 14 &c. are arranged opposite the containers 5, 6, 7 and carry apertured tables 25, 26, 27. There are two tables 150, 151 at the front and back of the machine at the same level of the tops of the containers 5, 6, 7. Two parallel sliding rods 30 are provided with pawl-like stops 33 which are free to turn forwardly, but not rearwardly. The rods have pins 34 connected to levers 35 on a shaft 36 having a toothed wheel segment engaging a tooth 40 of a piston rod 39. This rod carries a piston 42 on a cylinder 43 secured beneath the table 151. Pipes 44, 45, lead to a multiple way valve 46 controlled by a lever 48 carrying a roller 49 pressed on a cam 100. The cam mounted on a shaft 52 is in engagement with a worm 56 on a shaft 57 driven by a motor 59, which also drives a pump 60. The pump draws water from a tank 63 and delivers to the valve 46. Behind the valve 46 are other valves 58, &c. Fig. 5, with similar lever and cam controls. The cam 101 controls through a valve and pipe 65, the cylinder 8, Fig. 1. Similarly the cam 102 controls the cylinder 9 and the cam 103 the cylinder 10. The cam 104 controls a pressure hot water supply pipe 85 connected with pipes 87, Fig. 6, having jets 88. Inside the container 6 the pipe 86 has a valve 123 with a spring loaded actuating button 125. If there is no pressure on the button a spring 124 draws it up and liquid supply through pipe 86 is interrupted. Above the button 125 is an angle lever 126 which is displaced somewhat towards the left of the button and is mounted on a part 125 of the bracket 23 and has a roller 127 at the left hand end. The roller projects inwardly somewhat over the table 26 through a slit in the same. The machine operates as follows. The reservoir 63. Fig. 1, is filled with water or oil and the container 5 with lye suitably heated. Container 7 is filled with clean hot water. Pipe 85, Fig. 5, is connected to a hot water supply. The crockery is placed in perforated baskets a, Fig. 1. It is assumed the crockery in basket b has been in the lye, the crockery c has been squirted and the crockery d is cleaned Motor 59 is started and the pump 60 operates as well as the cams 100 &c. Liquid from the vessel 63 passes into cylinder 43 to operate the toothed segment 38 which in turn operates the lever 35. In this way the rods 30 slide all the baskets to the left on to tables 25, &c. The cams rotate and the cylinders 8, 9, 10 are emptied allowing the baskets to fall. A cam 101 has depressions 75 and liquid under pressure flows alternately into and out of the pipe 65, Fig. 5, causing the table 25 alternately to rise and fall. The cam 104 controls hot water through the valve 80, so as to squirt the basket in the container 6. If no crockery is present the button cuts off the hot water supply. At the same time hot water regulated by a valve 121, Fig. 1, flows into the container 7 so that surface water that has become fatty escapes by overflow. The cams rotate and tables 25, 26, 27 are raised again to continue another operation.