Brushing – scrubbing – and general cleaning – Machines – With means to pass a solid cleaning agent and a fluid...
Patent
1984-12-21
1986-08-26
Roberts, Edward L.
Brushing, scrubbing, and general cleaning
Machines
With means to pass a solid cleaning agent and a fluid...
1510406A, B08B 902
Patent
active
046074104
ABSTRACT:
Apparatus for cleaning pipelines of finite length has a four-way flow reversing valve whose body admits a liquid cleaning agent from an inlet into one port and thence into a pipeline whence the cleaning agent flows back into the body by way of a second port and is discharged by way of an outlet. The valving element is a piston which is reciprocable between two end positions in one of which the flow of cleaning agent takes place as outlined above and in the other of which the cleaning agent flows first into the other port and returns into the body of the valve by way of the one port to be discharged by way of the outlet. The body of the valve is separably connected with the larger-diameter end portions of two cylindrical housings whose smaller-diameter end portions are separably connectable with the respective ends of the pipeline. A supply of cleaning elements, such as balls of sponge rubber, is used in the apparatus to automatically change the position of the piston as soon as they impinge upon the one or the other end of the piston.
REFERENCES:
patent: 1165455 (1915-12-01), Schlemmer
patent: 2074187 (1937-03-01), Pichler et al.
patent: 2096714 (1937-10-01), Haldane
Kontler Peter K.
Roberts Edward L.
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